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docs/protocol/agent-protocols.html
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@@ -937,7 +937,7 @@ window.addEventListener('click',(e)=>{
<h2 id="abstract" tabindex="-1">Abstract</h2>
<p>This document defines how software agents find SimpleX addresses and call the tools of other agents and bots over SimpleX:</p>
<ul>
<li>an <code>llms.txt</code> section with communication addresses, beside the link relation types and the well-known document of <a href="/docs/protocol/web-discovery.html">Publishing SimpleX addresses on websites</a>;</li>
<li>an <code>llms.txt</code> section with communication addresses, beside the link relation type and the well-known document of <a href="/docs/protocol/web-discovery.html">Publishing SimpleX addresses on websites</a>;</li>
<li>declarations: the protocols a profile serves and their transports, the peer types a channel or a contact address is made for, and the update frequency of a channel;</li>
<li>the chat transport: the command <code>/_call</code> in a conversation;</li>
<li>the Service RPC transport: one request and one response, without a conversation, in a generic envelope;</li>
@@ -997,10 +997,10 @@ window.addEventListener('click',(e)=>{
<p>For SimpleX entries, the type <code>updates</code> requires a channel link, the type <code>group</code> a group link, and the types <code>contact</code> and <code>business contact</code> a contact address link [WEB]. The link text is the title of the address.</p>
<pre><code>## Communications
- [Ridgeline updates](https://smp12.simplex.im/c#…): SimpleX updates for people and agents, weekly. Trail conditions and closures.
- [Ridgeline hikers](https://smp12.simplex.im/g#…): SimpleX group for people. Routes and meetups.
- [Ask Ridgeline](https://smp12.simplex.im/a#…): SimpleX business contact for agents, MCP. Bookings and availability.
- [Ridgeline support](mailto:help@ridgeline.example): Email contact for people.
- [Acme news](https://smp12.simplex.im/c#…): SimpleX updates for people and agents, weekly. Product news and offers.
- [Acme customers](https://smp12.simplex.im/g#…): SimpleX group for people. Questions and tips from customers.
- [Ask Acme](https://smp12.simplex.im/a#…): SimpleX business contact for agents, MCP. Orders and availability.
- [Acme support](mailto:support@acme.example): Email contact for people.
</code></pre>
<h2 id="profile-declarations" tabindex="-1">Profile declarations</h2>
<p>A profile or a group declares the protocols it serves in its preferences. A channel or a public group declares its audience in its public group record, and a channel also its update frequency. A contact address declares the peers it serves in its link data.</p>
@@ -1115,7 +1115,7 @@ window.addEventListener('click',(e)=>{
<pre><code>/_service_request &lt;userId&gt; &lt;target&gt; [timeout=&lt;seconds&gt;] [sign_key=&lt;key&gt;] &lt;json&gt;
</code></pre>
<ul>
<li><code>&lt;target&gt;</code>: a contact address link, full or short, or the SimpleX name of a contact address [NAMES].</li>
<li><code>&lt;target&gt;</code>: a contact address link, or the SimpleX name of a contact address [NAMES].</li>
<li><code>timeout</code>: how long the requester waits for the response. The default is 30 seconds.</li>
<li><code>sign_key</code>: the requester's Ed25519 private key, for a <a href="#signed-requests">signed request</a>.</li>
<li><code>&lt;json&gt;</code>: the <a href="#request">request</a>, a JSON object.</li>
@@ -1227,11 +1227,11 @@ window.addEventListener('click',(e)=>{
&quot;tools&quot;: [
{
&quot;name&quot;: &quot;availability&quot;,
&quot;description&quot;: &quot;Rooms available on a date&quot;,
&quot;description&quot;: &quot;Items in stock&quot;,
&quot;inputSchema&quot;: {
&quot;type&quot;: &quot;object&quot;,
&quot;properties&quot;: {&quot;date&quot;: {&quot;type&quot;: &quot;string&quot;}},
&quot;required&quot;: [&quot;date&quot;]
&quot;properties&quot;: {&quot;item&quot;: {&quot;type&quot;: &quot;string&quot;}},
&quot;required&quot;: [&quot;item&quot;]
}
}
],
@@ -1249,7 +1249,7 @@ window.addEventListener('click',(e)=>{
&quot;method&quot;: &quot;tools/call&quot;,
&quot;params&quot;: {
&quot;name&quot;: &quot;availability&quot;,
&quot;arguments&quot;: {&quot;date&quot;: &quot;2026-11-02&quot;},
&quot;arguments&quot;: {&quot;item&quot;: &quot;anvil&quot;},
&quot;_meta&quot;: {
&quot;io.modelcontextprotocol/protocolVersion&quot;: &quot;2026-07-28&quot;,
&quot;io.modelcontextprotocol/clientCapabilities&quot;: {}
@@ -1265,7 +1265,7 @@ window.addEventListener('click',(e)=>{
&quot;id&quot;: 1,
&quot;result&quot;: {
&quot;resultType&quot;: &quot;complete&quot;,
&quot;content&quot;: [{&quot;type&quot;: &quot;text&quot;, &quot;text&quot;: &quot;Three rooms are available on 2026-11-02.&quot;}],
&quot;content&quot;: [{&quot;type&quot;: &quot;text&quot;, &quot;text&quot;: &quot;12 anvils are in stock.&quot;}],
&quot;isError&quot;: false
}
}
docs/protocol/agent-protocols.md
+11 -11
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@@ -37,7 +37,7 @@ Evgeny Poberezkin
This document defines how software agents find SimpleX addresses and call the tools of other agents and bots over SimpleX:
- an `llms.txt` section with communication addresses, beside the link relation types and the well-known document of [Publishing SimpleX addresses on websites](https://simplex.chat/docs/protocol/web-discovery.md);
- an `llms.txt` section with communication addresses, beside the link relation type and the well-known document of [Publishing SimpleX addresses on websites](https://simplex.chat/docs/protocol/web-discovery.md);
- declarations: the protocols a profile serves and their transports, the peer types a channel or a contact address is made for, and the update frequency of a channel;
- the chat transport: the command `/_call` in a conversation;
- the Service RPC transport: one request and one response, without a conversation, in a generic envelope;
@@ -111,10 +111,10 @@ For SimpleX entries, the type `updates` requires a channel link, the type `group
```
## Communications
- [Ridgeline updates](https://smp12.simplex.im/c#…): SimpleX updates for people and agents, weekly. Trail conditions and closures.
- [Ridgeline hikers](https://smp12.simplex.im/g#…): SimpleX group for people. Routes and meetups.
- [Ask Ridgeline](https://smp12.simplex.im/a#…): SimpleX business contact for agents, MCP. Bookings and availability.
- [Ridgeline support](mailto:help@ridgeline.example): Email contact for people.
- [Acme news](https://smp12.simplex.im/c#…): SimpleX updates for people and agents, weekly. Product news and offers.
- [Acme customers](https://smp12.simplex.im/g#…): SimpleX group for people. Questions and tips from customers.
- [Ask Acme](https://smp12.simplex.im/a#…): SimpleX business contact for agents, MCP. Orders and availability.
- [Acme support](mailto:support@acme.example): Email contact for people.
```
## Profile declarations
@@ -250,7 +250,7 @@ The requester's core sends the request with:
/_service_request <userId> <target> [timeout=<seconds>] [sign_key=<key>] <json>
```
- `<target>`: a contact address link, full or short, or the SimpleX name of a contact address [NAMES].
- `<target>`: a contact address link, or the SimpleX name of a contact address [NAMES].
- `timeout`: how long the requester waits for the response. The default is 30 seconds.
- `sign_key`: the requester's Ed25519 private key, for a [signed request](#signed-requests).
- `<json>`: the [request](#request), a JSON object.
@@ -380,11 +380,11 @@ The reply:
"tools": [
{
"name": "availability",
"description": "Rooms available on a date",
"description": "Items in stock",
"inputSchema": {
"type": "object",
"properties": {"date": {"type": "string"}},
"required": ["date"]
"properties": {"item": {"type": "string"}},
"required": ["item"]
}
}
],
@@ -405,7 +405,7 @@ Calling a tool over Service RPC, the request:
"method": "tools/call",
"params": {
"name": "availability",
"arguments": {"date": "2026-11-02"},
"arguments": {"item": "anvil"},
"_meta": {
"io.modelcontextprotocol/protocolVersion": "2026-07-28",
"io.modelcontextprotocol/clientCapabilities": {}
@@ -424,7 +424,7 @@ The response:
"id": 1,
"result": {
"resultType": "complete",
"content": [{"type": "text", "text": "Three rooms are available on 2026-11-02."}],
"content": [{"type": "text", "text": "12 anvils are in stock."}],
"isError": false
}
}
docs/protocol/web-discovery.html
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@@ -898,11 +898,9 @@ window.addEventListener('click',(e)=>{
<li><a href="#abstract">Abstract</a></li>
<li><a href="#conventions">Conventions</a></li>
<li><a href="#terms">Terms</a></li>
<li><a href="#link-relation-types">Link relation types</a>
<li><a href="#link-relation-type">Link relation type</a>
<ul>
<li><a href="#simplex-channel">simplex-channel</a></li>
<li><a href="#simplex-group">simplex-group</a></li>
<li><a href="#simplex-contact">simplex-contact</a></li>
<li><a href="#simplex">simplex</a></li>
<li><a href="#owners-and-described-addresses">Owner's and described addresses</a></li>
<li><a href="#target-attributes">Target attributes</a></li>
<li><a href="#html">HTML</a></li>
@@ -921,7 +919,7 @@ window.addEventListener('click',(e)=>{
<li><a href="#privacy-considerations">Privacy considerations</a></li>
<li><a href="#iana-considerations">IANA considerations</a>
<ul>
<li><a href="#link-relation-types-registration">Link relation types registration</a></li>
<li><a href="#link-relation-type-registration">Link relation type registration</a></li>
<li><a href="#well-known-uri-registration">Well-known URI registration</a></li>
</ul>
</li>
@@ -931,7 +929,7 @@ window.addEventListener('click',(e)=>{
<h2 id="abstract" tabindex="-1">Abstract</h2>
<p>This document defines how a website publishes SimpleX channels, groups and contact addresses:</p>
<ul>
<li>the link relation types <code>simplex-channel</code>, <code>simplex-group</code> and <code>simplex-contact</code>, for the HTML elements <code>link</code>, <code>a</code> and <code>area</code>, and for the HTTP <code>Link</code> header field. Their targets are the addresses of the website's owner, or the addresses a page describes, such as the entries of a directory;</li>
<li>the link relation type <code>simplex</code>, for the HTML elements <code>link</code>, <code>a</code> and <code>area</code>, and for the HTTP <code>Link</code> header field. Its targets are the addresses of the website's owner, or the addresses a page describes, such as the entries of a directory;</li>
<li>the well-known URI <code>simplex.json</code>: a JSON document with the owner's channels, groups and contact addresses, their audience, the update frequency of each channel, and the kind and the protocols of each contact address.</li>
</ul>
<p>People and software agents subscribe to a channel to receive updates, join a group to take part in its conversations, and connect to a contact address to send requests. <a href="/docs/protocol/agent-protocols.html">Agent protocols over SimpleX</a> defines the requests an agent sends to a contact address, and an <code>llms.txt</code> section with the same addresses.</p>
@@ -940,40 +938,36 @@ window.addEventListener('click',(e)=>{
<p>JSON schemas use JSON Type Definition [RFC8927].</p>
<h2 id="terms" tabindex="-1">Terms</h2>
<ul>
<li><strong>SimpleX link</strong>: a connection link of the SimpleX Agent protocol, in the full or the short syntax, with the <code>https</code> or the <code>simplex</code> scheme [AGENT].</li>
<li><strong>Channel link</strong>: a short SimpleX link of type <code>c</code>, for example <code>https://smp12.simplex.im/c#&lt;key&gt;</code>.</li>
<li><strong>Group link</strong>: a short SimpleX link of type <code>g</code>, for example <code>https://smp12.simplex.im/g#&lt;key&gt;</code>, or a full SimpleX link of a group.</li>
<li><strong>Contact address link</strong>: a short SimpleX link of type <code>a</code>, for example <code>https://smp12.simplex.im/a#&lt;key&gt;</code>, or a full SimpleX link of type <code>contact</code>.</li>
<li><strong>SimpleX link</strong>: a short connection link of the SimpleX Agent protocol, with the <code>https</code> or the <code>simplex</code> scheme [AGENT]. The type in the link is the kind of the address.</li>
<li><strong>Channel link</strong>: a SimpleX link of type <code>c</code>, for example <code>https://smp12.simplex.im/c#&lt;key&gt;</code>.</li>
<li><strong>Group link</strong>: a SimpleX link of type <code>g</code>, for example <code>https://smp12.simplex.im/g#&lt;key&gt;</code>.</li>
<li><strong>Contact address link</strong>: a SimpleX link of type <code>a</code>, for example <code>https://smp12.simplex.im/a#&lt;key&gt;</code>.</li>
<li><strong>SimpleX name</strong>: a name in the SimpleX name service [NAMES]. <code>#example.simplex</code> is the name of a channel, <code>@example.simplex</code> the name of a contact address.</li>
<li><strong>Owner</strong>: the person or organization that publishes the website.</li>
</ul>
<h2 id="link-relation-types" tabindex="-1">Link relation types</h2>
<h3 id="simplex-channel" tabindex="-1">simplex-channel</h3>
<p>The target of a <code>simplex-channel</code> link is a SimpleX channel of the owner of the link context, or a SimpleX channel described by the link context. The target MUST be a channel link.</p>
<h3 id="simplex-group" tabindex="-1">simplex-group</h3>
<p>The target of a <code>simplex-group</code> link is a SimpleX group of the owner of the link context, or a SimpleX group described by the link context. The target MUST be a group link.</p>
<h3 id="simplex-contact" tabindex="-1">simplex-contact</h3>
<p>The target of a <code>simplex-contact</code> link is a SimpleX contact address of the owner of the link context, or a SimpleX contact address described by the link context. The target MUST be a contact address link.</p>
<h2 id="link-relation-type" tabindex="-1">Link relation type</h2>
<h3 id="simplex" tabindex="-1">simplex</h3>
<p>The target of a <code>simplex</code> link is a SimpleX channel, group or contact address of the owner of the link context, or described by the link context. The target MUST be a channel link, a group link or a contact address link. The type in the link tells which.</p>
<h3 id="owners-and-described-addresses" tabindex="-1">Owner's and described addresses</h3>
<p>A page that describes the addresses of others, such as a directory or a catalogue, uses the relation types on its entries. The owner's own addresses are listed in the <a href="#well-known-uri">well-known document</a>.</p>
<p>A page that describes the addresses of others, such as a directory or a catalogue, uses the relation type on its entries. The owner's own addresses are listed in the <a href="#well-known-uri">well-known document</a>.</p>
<h3 id="target-attributes" tabindex="-1">Target attributes</h3>
<ul>
<li><code>title</code>: the name of the channel, the group or the address, for display. In HTTP, a title with non-ASCII characters is sent as <code>title*</code> [RFC8187].</li>
<li><code>hreflang</code>: the language of the channel's posts, or of the conversations [BCP47].</li>
</ul>
<p>A link context MAY have several links of one relation type. Their order is the owner's order of preference: document order in HTML, and the order of link values in HTTP.</p>
<p>A link context MAY have several <code>simplex</code> links of one kind. Their order is the owner's order of preference: document order in HTML, and the order of link values in HTTP.</p>
<h3 id="html" tabindex="-1">HTML</h3>
<p>In the document head:</p>
<pre><code class="language-html">&lt;link rel=&quot;simplex-channel&quot; href=&quot;https://smp12.simplex.im/c#…&quot; hreflang=&quot;en&quot; title=&quot;Ridgeline updates&quot;&gt;
&lt;link rel=&quot;simplex-contact&quot; href=&quot;https://smp12.simplex.im/a#…&quot; hreflang=&quot;en&quot; title=&quot;Ask Ridgeline&quot;&gt;
<pre><code class="language-html">&lt;link rel=&quot;simplex&quot; href=&quot;https://smp12.simplex.im/c#…&quot; hreflang=&quot;en&quot; title=&quot;Acme news&quot;&gt;
&lt;link rel=&quot;simplex&quot; href=&quot;https://smp12.simplex.im/a#…&quot; hreflang=&quot;en&quot; title=&quot;Ask Acme&quot;&gt;
</code></pre>
<p>In the document body, the relation types are used on visible links, for example on the entries of a directory:</p>
<pre><code class="language-html">&lt;a rel=&quot;simplex-contact&quot; href=&quot;https://smp12.simplex.im/a#…&quot;&gt;Chat with us&lt;/a&gt;
&lt;a rel=&quot;simplex-group&quot; href=&quot;https://smp12.simplex.im/g#…&quot;&gt;Ridgeline hikers&lt;/a&gt;
<p>In the document body, the relation type is used on visible links, for example on the entries of a directory:</p>
<pre><code class="language-html">&lt;a rel=&quot;simplex&quot; href=&quot;https://smp12.simplex.im/a#…&quot;&gt;Chat with us&lt;/a&gt;
&lt;a rel=&quot;simplex&quot; href=&quot;https://smp12.simplex.im/g#…&quot;&gt;Acme customers&lt;/a&gt;
</code></pre>
<h3 id="http" tabindex="-1">HTTP</h3>
<pre><code>Link: &lt;https://smp12.simplex.im/c#…&gt;; rel=&quot;simplex-channel&quot;; hreflang=&quot;en&quot;; title=&quot;Ridgeline updates&quot;
Link: &lt;https://smp12.simplex.im/a#…&gt;; rel=&quot;simplex-contact&quot;; hreflang=&quot;en&quot;; title=&quot;Ask Ridgeline&quot;
<pre><code>Link: &lt;https://smp12.simplex.im/c#…&gt;; rel=&quot;simplex&quot;; hreflang=&quot;en&quot;; title=&quot;Acme news&quot;
Link: &lt;https://smp12.simplex.im/a#…&gt;; rel=&quot;simplex&quot;; hreflang=&quot;en&quot;; title=&quot;Ask Acme&quot;
</code></pre>
<h2 id="well-known-uri" tabindex="-1">Well-known URI</h2>
<h3 id="retrieval" tabindex="-1">Retrieval</h3>
@@ -1026,8 +1020,8 @@ Link: &lt;https://smp12.simplex.im/a#…&gt;; rel=&quot;simplex-contact&quot;; h
&quot;channels&quot;: [
{
&quot;link&quot;: &quot;https://smp12.simplex.im/c#…&quot;,
&quot;name&quot;: &quot;#ridgeline.simplex&quot;,
&quot;title&quot;: &quot;Ridgeline updates&quot;,
&quot;name&quot;: &quot;#acme.simplex&quot;,
&quot;title&quot;: &quot;Acme news&quot;,
&quot;lang&quot;: &quot;en&quot;,
&quot;audience&quot;: [&quot;people&quot;, &quot;agents&quot;],
&quot;changeFrequency&quot;: &quot;weekly&quot;
@@ -1036,15 +1030,15 @@ Link: &lt;https://smp12.simplex.im/a#…&gt;; rel=&quot;simplex-contact&quot;; h
&quot;groups&quot;: [
{
&quot;link&quot;: &quot;https://smp12.simplex.im/g#…&quot;,
&quot;title&quot;: &quot;Ridgeline hikers&quot;,
&quot;title&quot;: &quot;Acme customers&quot;,
&quot;lang&quot;: &quot;en&quot;
}
],
&quot;contacts&quot;: [
{
&quot;link&quot;: &quot;https://smp12.simplex.im/a#…&quot;,
&quot;name&quot;: &quot;@ridgeline.simplex&quot;,
&quot;title&quot;: &quot;Ask Ridgeline&quot;,
&quot;name&quot;: &quot;@acme.simplex&quot;,
&quot;title&quot;: &quot;Ask Acme&quot;,
&quot;lang&quot;: &quot;en&quot;,
&quot;audience&quot;: [&quot;agents&quot;],
&quot;business&quot;: true,
@@ -1056,7 +1050,7 @@ Link: &lt;https://smp12.simplex.im/a#…&gt;; rel=&quot;simplex-contact&quot;; h
<h2 id="processing" tabindex="-1">Processing</h2>
<ul>
<li>A consumer MUST ignore unknown fields and unknown <code>audience</code> values.</li>
<li>A consumer MUST ignore a link of a type other than the one its relation type or its list requires.</li>
<li>A consumer MUST ignore a <code>simplex</code> link that is not a channel, group or contact address link, and an entry of <code>simplex.json</code> whose link is of a type other than its list requires.</li>
<li>The values on the website are hints. The data retrieved with the link is authoritative: an audience, an update frequency, the business flag or protocols declared there [AGENTS] take precedence over the website's values.</li>
<li>A consumer MAY connect by <code>link</code> or by <code>name</code>. Resolving a name reveals interest in it to one names router, and verifies that the name's record and the profile's claim match [NAMES].</li>
</ul>
@@ -1069,49 +1063,17 @@ Link: &lt;https://smp12.simplex.im/a#…&gt;; rel=&quot;simplex-contact&quot;; h
</ul>
<h2 id="privacy-considerations" tabindex="-1">Privacy considerations</h2>
<ul>
<li>The relation types and the well-known document are intended for owners who want to be reachable, such as channels, communities, businesses and services, and for pages that describe them, such as directories.</li>
<li>The relation type and the well-known document are intended for owners who want to be reachable, such as channels, communities, businesses and services, and for pages that describe them, such as directories.</li>
<li>A subscriber or a requester connects through the SimpleX network, without contacting the website. Retrieving a page or the well-known document is an ordinary web request.</li>
</ul>
<h2 id="iana-considerations" tabindex="-1">IANA considerations</h2>
<h3 id="link-relation-types-registration" tabindex="-1">Link relation types registration</h3>
<p>Three registrations in the &quot;Link Relation Types&quot; registry [RFC8288]:</p>
<h3 id="link-relation-type-registration" tabindex="-1">Link relation type registration</h3>
<p>One registration in the &quot;Link Relation Types&quot; registry [RFC8288]:</p>
<ul>
<li>
<p>Relation Name: <code>simplex-channel</code></p>
</li>
<li>
<p>Description: Refers to a SimpleX channel of the owner of the link context, or described by the link context.</p>
</li>
<li>
<p>Reference: <a href="https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-channel">https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-channel</a></p>
</li>
<li>
<p>Notes: The target is a SimpleX channel link [AGENT], with the <code>https</code> scheme or the provisionally registered <code>simplex</code> scheme.</p>
</li>
<li>
<p>Relation Name: <code>simplex-group</code></p>
</li>
<li>
<p>Description: Refers to a SimpleX group of the owner of the link context, or described by the link context.</p>
</li>
<li>
<p>Reference: <a href="https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-group">https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-group</a></p>
</li>
<li>
<p>Notes: The target is a SimpleX group link [AGENT], with the <code>https</code> scheme or the provisionally registered <code>simplex</code> scheme.</p>
</li>
<li>
<p>Relation Name: <code>simplex-contact</code></p>
</li>
<li>
<p>Description: Refers to a SimpleX contact address of the owner of the link context, or described by the link context.</p>
</li>
<li>
<p>Reference: <a href="https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-contact">https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-contact</a></p>
</li>
<li>
<p>Notes: The target is a SimpleX contact address link [AGENT], with the <code>https</code> scheme or the provisionally registered <code>simplex</code> scheme.</p>
</li>
<li>Relation Name: <code>simplex</code></li>
<li>Description: Refers to a SimpleX channel, group or contact address of the owner of the link context, or described by the link context.</li>
<li>Reference: <a href="https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex">https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex</a></li>
<li>Notes: The target is a SimpleX short link [AGENT] of a channel, a group or a contact address, with the <code>https</code> scheme or the provisionally registered <code>simplex</code> scheme.</li>
</ul>
<h3 id="well-known-uri-registration" tabindex="-1">Well-known URI registration</h3>
<p>One registration in the &quot;Well-Known URIs&quot; registry [RFC8615]:</p>
@@ -1123,75 +1085,19 @@ Link: &lt;https://smp12.simplex.im/a#…&gt;; rel=&quot;simplex-contact&quot;; h
<li>Related Information: SimpleX link syntax [AGENT].</li>
</ul>
<h2 id="html-link-type-extensions" tabindex="-1">HTML link type extensions</h2>
<p>The HTML standard requires extension link types to be registered on the microformats page &quot;existing-rel-values&quot; [HTML] [MF-REL]. The entries:</p>
<p>The HTML standard requires extension link types to be registered on the microformats page &quot;existing-rel-values&quot; [HTML] [MF-REL]. The entry:</p>
<ul>
<li>
<p>Keyword: <code>simplex-channel</code></p>
</li>
<li>
<p>Effect on <code>link</code>: Hyperlink</p>
</li>
<li>
<p>Effect on <code>a</code>, <code>area</code>: Hyperlink</p>
</li>
<li>
<p>Effect on <code>form</code>: not allowed</p>
</li>
<li>
<p>Brief description: Refers to a SimpleX channel of the page's owner, or described by the page.</p>
</li>
<li>
<p>Specification: <a href="https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-channel">https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-channel</a></p>
</li>
<li>
<p>Status: proposed</p>
</li>
<li>
<p>Keyword: <code>simplex-group</code></p>
</li>
<li>
<p>Effect on <code>link</code>: Hyperlink</p>
</li>
<li>
<p>Effect on <code>a</code>, <code>area</code>: Hyperlink</p>
</li>
<li>
<p>Effect on <code>form</code>: not allowed</p>
</li>
<li>
<p>Brief description: Refers to a SimpleX group of the page's owner, or described by the page.</p>
</li>
<li>
<p>Specification: <a href="https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-group">https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-group</a></p>
</li>
<li>
<p>Status: proposed</p>
</li>
<li>
<p>Keyword: <code>simplex-contact</code></p>
</li>
<li>
<p>Effect on <code>link</code>: Hyperlink</p>
</li>
<li>
<p>Effect on <code>a</code>, <code>area</code>: Hyperlink</p>
</li>
<li>
<p>Effect on <code>form</code>: not allowed</p>
</li>
<li>
<p>Brief description: Refers to a SimpleX contact address of the page's owner, or described by the page.</p>
</li>
<li>
<p>Specification: <a href="https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-contact">https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-contact</a></p>
</li>
<li>
<p>Status: proposed</p>
</li>
<li>Keyword: <code>simplex</code></li>
<li>Effect on <code>link</code>: Hyperlink</li>
<li>Effect on <code>a</code>, <code>area</code>: Hyperlink</li>
<li>Effect on <code>form</code>: not allowed</li>
<li>Brief description: Refers to a SimpleX channel, group or contact address of the page's owner, or described by the page.</li>
<li>Specification: <a href="https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex">https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex</a></li>
<li>Status: proposed</li>
</ul>
<h2 id="references" tabindex="-1">References</h2>
<ul>
<li>[AGENT] SimpleX Agent protocol, connection links: <a href="https://github.com/simplex-chat/simplexmq/blob/stable/protocol/agent-protocol.md#connection-link-1-time-invitation-and-contact-address">https://github.com/simplex-chat/simplexmq/blob/stable/protocol/agent-protocol.md#connection-link-1-time-invitation-and-contact-address</a></li>
<li>[AGENT] SimpleX Agent protocol, short connection links: <a href="https://github.com/simplex-chat/simplexmq/blob/stable/protocol/agent-protocol.md#short-connection-link-syntax">https://github.com/simplex-chat/simplexmq/blob/stable/protocol/agent-protocol.md#short-connection-link-syntax</a></li>
<li>[AGENTS] Agent protocols over SimpleX: <a href="/docs/protocol/agent-protocols.html">agent-protocols.md</a></li>
<li>[BCP47] Tags for Identifying Languages: <a href="https://www.rfc-editor.org/info/bcp47">https://www.rfc-editor.org/info/bcp47</a></li>
<li>[BUSINESS] Using SimpleX Chat in business: <a href="/docs/business.html">BUSINESS.md</a></li>
docs/protocol/web-discovery.md
+38 -74
View File
@@ -9,10 +9,8 @@ Evgeny Poberezkin
- [Abstract](#abstract)
- [Conventions](#conventions)
- [Terms](#terms)
- [Link relation types](#link-relation-types)
- [simplex-channel](#simplex-channel)
- [simplex-group](#simplex-group)
- [simplex-contact](#simplex-contact)
- [Link relation type](#link-relation-type)
- [simplex](#simplex)
- [Owner's and described addresses](#owners-and-described-addresses)
- [Target attributes](#target-attributes)
- [HTML](#html)
@@ -25,7 +23,7 @@ Evgeny Poberezkin
- [Security considerations](#security-considerations)
- [Privacy considerations](#privacy-considerations)
- [IANA considerations](#iana-considerations)
- [Link relation types registration](#link-relation-types-registration)
- [Link relation type registration](#link-relation-type-registration)
- [Well-known URI registration](#well-known-uri-registration)
- [HTML link type extensions](#html-link-type-extensions)
- [References](#references)
@@ -34,7 +32,7 @@ Evgeny Poberezkin
This document defines how a website publishes SimpleX channels, groups and contact addresses:
- the link relation types `simplex-channel`, `simplex-group` and `simplex-contact`, for the HTML elements `link`, `a` and `area`, and for the HTTP `Link` header field. Their targets are the addresses of the website's owner, or the addresses a page describes, such as the entries of a directory;
- the link relation type `simplex`, for the HTML elements `link`, `a` and `area`, and for the HTTP `Link` header field. Its targets are the addresses of the website's owner, or the addresses a page describes, such as the entries of a directory;
- the well-known URI `simplex.json`: a JSON document with the owner's channels, groups and contact addresses, their audience, the update frequency of each channel, and the kind and the protocols of each contact address.
People and software agents subscribe to a channel to receive updates, join a group to take part in its conversations, and connect to a contact address to send requests. [Agent protocols over SimpleX](https://simplex.chat/docs/protocol/agent-protocols.md) defines the requests an agent sends to a contact address, and an `llms.txt` section with the same addresses.
@@ -47,59 +45,51 @@ JSON schemas use JSON Type Definition [RFC8927].
## Terms
- **SimpleX link**: a connection link of the SimpleX Agent protocol, in the full or the short syntax, with the `https` or the `simplex` scheme [AGENT].
- **Channel link**: a short SimpleX link of type `c`, for example `https://smp12.simplex.im/c#<key>`.
- **Group link**: a short SimpleX link of type `g`, for example `https://smp12.simplex.im/g#<key>`, or a full SimpleX link of a group.
- **Contact address link**: a short SimpleX link of type `a`, for example `https://smp12.simplex.im/a#<key>`, or a full SimpleX link of type `contact`.
- **SimpleX link**: a short connection link of the SimpleX Agent protocol, with the `https` or the `simplex` scheme [AGENT]. The type in the link is the kind of the address.
- **Channel link**: a SimpleX link of type `c`, for example `https://smp12.simplex.im/c#<key>`.
- **Group link**: a SimpleX link of type `g`, for example `https://smp12.simplex.im/g#<key>`.
- **Contact address link**: a SimpleX link of type `a`, for example `https://smp12.simplex.im/a#<key>`.
- **SimpleX name**: a name in the SimpleX name service [NAMES]. `#example.simplex` is the name of a channel, `@example.simplex` the name of a contact address.
- **Owner**: the person or organization that publishes the website.
## Link relation types
## Link relation type
### simplex-channel
### simplex
The target of a `simplex-channel` link is a SimpleX channel of the owner of the link context, or a SimpleX channel described by the link context. The target MUST be a channel link.
### simplex-group
The target of a `simplex-group` link is a SimpleX group of the owner of the link context, or a SimpleX group described by the link context. The target MUST be a group link.
### simplex-contact
The target of a `simplex-contact` link is a SimpleX contact address of the owner of the link context, or a SimpleX contact address described by the link context. The target MUST be a contact address link.
The target of a `simplex` link is a SimpleX channel, group or contact address of the owner of the link context, or described by the link context. The target MUST be a channel link, a group link or a contact address link. The type in the link tells which.
### Owner's and described addresses
A page that describes the addresses of others, such as a directory or a catalogue, uses the relation types on its entries. The owner's own addresses are listed in the [well-known document](#well-known-uri).
A page that describes the addresses of others, such as a directory or a catalogue, uses the relation type on its entries. The owner's own addresses are listed in the [well-known document](#well-known-uri).
### Target attributes
- `title`: the name of the channel, the group or the address, for display. In HTTP, a title with non-ASCII characters is sent as `title*` [RFC8187].
- `hreflang`: the language of the channel's posts, or of the conversations [BCP47].
A link context MAY have several links of one relation type. Their order is the owner's order of preference: document order in HTML, and the order of link values in HTTP.
A link context MAY have several `simplex` links of one kind. Their order is the owner's order of preference: document order in HTML, and the order of link values in HTTP.
### HTML
In the document head:
```html
<link rel="simplex-channel" href="https://smp12.simplex.im/c#…" hreflang="en" title="Ridgeline updates">
<link rel="simplex-contact" href="https://smp12.simplex.im/a#…" hreflang="en" title="Ask Ridgeline">
<link rel="simplex" href="https://smp12.simplex.im/c#…" hreflang="en" title="Acme news">
<link rel="simplex" href="https://smp12.simplex.im/a#…" hreflang="en" title="Ask Acme">
```
In the document body, the relation types are used on visible links, for example on the entries of a directory:
In the document body, the relation type is used on visible links, for example on the entries of a directory:
```html
<a rel="simplex-contact" href="https://smp12.simplex.im/a#…">Chat with us</a>
<a rel="simplex-group" href="https://smp12.simplex.im/g#…">Ridgeline hikers</a>
<a rel="simplex" href="https://smp12.simplex.im/a#…">Chat with us</a>
<a rel="simplex" href="https://smp12.simplex.im/g#…">Acme customers</a>
```
### HTTP
```
Link: <https://smp12.simplex.im/c#…>; rel="simplex-channel"; hreflang="en"; title="Ridgeline updates"
Link: <https://smp12.simplex.im/a#…>; rel="simplex-contact"; hreflang="en"; title="Ask Ridgeline"
Link: <https://smp12.simplex.im/c#…>; rel="simplex"; hreflang="en"; title="Acme news"
Link: <https://smp12.simplex.im/a#…>; rel="simplex"; hreflang="en"; title="Ask Acme"
```
## Well-known URI
@@ -163,8 +153,8 @@ A site omits the lists it does not use.
"channels": [
{
"link": "https://smp12.simplex.im/c#…",
"name": "#ridgeline.simplex",
"title": "Ridgeline updates",
"name": "#acme.simplex",
"title": "Acme news",
"lang": "en",
"audience": ["people", "agents"],
"changeFrequency": "weekly"
@@ -173,15 +163,15 @@ A site omits the lists it does not use.
"groups": [
{
"link": "https://smp12.simplex.im/g#…",
"title": "Ridgeline hikers",
"title": "Acme customers",
"lang": "en"
}
],
"contacts": [
{
"link": "https://smp12.simplex.im/a#…",
"name": "@ridgeline.simplex",
"title": "Ask Ridgeline",
"name": "@acme.simplex",
"title": "Ask Acme",
"lang": "en",
"audience": ["agents"],
"business": true,
@@ -194,7 +184,7 @@ A site omits the lists it does not use.
## Processing
- A consumer MUST ignore unknown fields and unknown `audience` values.
- A consumer MUST ignore a link of a type other than the one its relation type or its list requires.
- A consumer MUST ignore a `simplex` link that is not a channel, group or contact address link, and an entry of `simplex.json` whose link is of a type other than its list requires.
- The values on the website are hints. The data retrieved with the link is authoritative: an audience, an update frequency, the business flag or protocols declared there [AGENTS] take precedence over the website's values.
- A consumer MAY connect by `link` or by `name`. Resolving a name reveals interest in it to one names router, and verifies that the name's record and the profile's claim match [NAMES].
@@ -207,29 +197,19 @@ A site omits the lists it does not use.
## Privacy considerations
- The relation types and the well-known document are intended for owners who want to be reachable, such as channels, communities, businesses and services, and for pages that describe them, such as directories.
- The relation type and the well-known document are intended for owners who want to be reachable, such as channels, communities, businesses and services, and for pages that describe them, such as directories.
- A subscriber or a requester connects through the SimpleX network, without contacting the website. Retrieving a page or the well-known document is an ordinary web request.
## IANA considerations
### Link relation types registration
### Link relation type registration
Three registrations in the "Link Relation Types" registry [RFC8288]:
One registration in the "Link Relation Types" registry [RFC8288]:
- Relation Name: `simplex-channel`
- Description: Refers to a SimpleX channel of the owner of the link context, or described by the link context.
- Reference: https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-channel
- Notes: The target is a SimpleX channel link [AGENT], with the `https` scheme or the provisionally registered `simplex` scheme.
- Relation Name: `simplex-group`
- Description: Refers to a SimpleX group of the owner of the link context, or described by the link context.
- Reference: https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-group
- Notes: The target is a SimpleX group link [AGENT], with the `https` scheme or the provisionally registered `simplex` scheme.
- Relation Name: `simplex-contact`
- Description: Refers to a SimpleX contact address of the owner of the link context, or described by the link context.
- Reference: https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-contact
- Notes: The target is a SimpleX contact address link [AGENT], with the `https` scheme or the provisionally registered `simplex` scheme.
- Relation Name: `simplex`
- Description: Refers to a SimpleX channel, group or contact address of the owner of the link context, or described by the link context.
- Reference: https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex
- Notes: The target is a SimpleX short link [AGENT] of a channel, a group or a contact address, with the `https` scheme or the provisionally registered `simplex` scheme.
### Well-known URI registration
@@ -243,35 +223,19 @@ One registration in the "Well-Known URIs" registry [RFC8615]:
## HTML link type extensions
The HTML standard requires extension link types to be registered on the microformats page "existing-rel-values" [HTML] [MF-REL]. The entries:
The HTML standard requires extension link types to be registered on the microformats page "existing-rel-values" [HTML] [MF-REL]. The entry:
- Keyword: `simplex-channel`
- Keyword: `simplex`
- Effect on `link`: Hyperlink
- Effect on `a`, `area`: Hyperlink
- Effect on `form`: not allowed
- Brief description: Refers to a SimpleX channel of the page's owner, or described by the page.
- Specification: https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-channel
- Status: proposed
- Keyword: `simplex-group`
- Effect on `link`: Hyperlink
- Effect on `a`, `area`: Hyperlink
- Effect on `form`: not allowed
- Brief description: Refers to a SimpleX group of the page's owner, or described by the page.
- Specification: https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-group
- Status: proposed
- Keyword: `simplex-contact`
- Effect on `link`: Hyperlink
- Effect on `a`, `area`: Hyperlink
- Effect on `form`: not allowed
- Brief description: Refers to a SimpleX contact address of the page's owner, or described by the page.
- Specification: https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex-contact
- Brief description: Refers to a SimpleX channel, group or contact address of the page's owner, or described by the page.
- Specification: https://github.com/simplex-chat/simplex-chat/blob/stable/docs/protocol/web-discovery.md#simplex
- Status: proposed
## References
- [AGENT] SimpleX Agent protocol, connection links: https://github.com/simplex-chat/simplexmq/blob/stable/protocol/agent-protocol.md#connection-link-1-time-invitation-and-contact-address
- [AGENT] SimpleX Agent protocol, short connection links: https://github.com/simplex-chat/simplexmq/blob/stable/protocol/agent-protocol.md#short-connection-link-syntax
- [AGENTS] Agent protocols over SimpleX: [agent-protocols.md](https://simplex.chat/docs/protocol/agent-protocols.md)
- [BCP47] Tags for Identifying Languages: https://www.rfc-editor.org/info/bcp47
- [BUSINESS] Using SimpleX Chat in business: [BUSINESS.md](https://simplex.chat/docs/business.md)