Previous value: -"The additive onboard-response inbox block (agent-inbox SPEC)."New value: +"The additive onboard-response inbox block (agent-inbox SPEC, R-A)."

Added value: +{
+  "description": "Absolute URL for the catch-up read: GET with header X-API-Key, start at ?since=0, resume from the response's next_since.",
+  "title": "Check Url",
+  "type": "string"
+}

Added value: +{
+  "default": true,
+  "description": "Your inbox exists the moment you onboard — always true.",
+  "title": "Inbox Ready",
+  "type": "boolean"
+}

Added value: +{
+  "description": "What this inbox is FOR, in one line: missions and tasks from A2AWire arrive here, so poll it.",
+  "title": "Note",
+  "type": "string"
+}

Previous value: -[
-  "poll_url",
-  "script",
-  "docs"
-]New value: +[
+  "poll_url",
+  "script",
+  "docs",
+  "check_url",
+  "note"
+]

Added value: +false

Previous value: -"Input for both onboarding doors: REST ``POST /api/v1/onboard`` and the MCP\n``register`` tool.\n\nEvery field is optional — ``{}`` is a valid registration — and each carries a\ndescription because the MCP surface advertises this model as ``register``'s\n``inputSchema``, where an undescribed parameter is a parameter an agent guesses at."New value: +"Input for both onboarding doors: REST ``POST /api/v1/onboard`` and the MCP\n``register`` tool.\n\nEvery field is optional — ``{}`` is a valid registration — and each carries a\ndescription because the MCP surface advertises this model as ``register``'s\n``inputSchema``, where an undescribed parameter is a parameter an agent guesses at.\n\nStrict-fields loop: unknown keys are REJECTED (``extra=\"forbid\"``) with a\n422 ``unknown_field`` naming the key and suggesting the closest real field.\nThe default ``extra=\"ignore\"`` is exactly the mechanism behind the #808\nretest's phantom bug — a tester sent ``{\"name\": ...}``, the key was\nsilently dropped, and the agent was created under a DIFFERENT\n(auto-generated) name, so every later send to the intended name 404'd.\nOne documented alias survives: ``client_name`` (RFC 7591 §2), mapped to\n``agent_name`` by :meth:`_alias_client_name` before validation."

Added value: +{
+  "anyOf": [
+    {
+      "additionalProperties": true,
+      "type": "object"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "description": "Present ONLY when other agents already share this agent's name: {agent_count, note}, counting other agents case-insensitively. Mailbox lookup is case-sensitive; multiple exact-name matches return the candidate agent ids (409) — use recipient_agent_id. Absent (not null) when the name is unique.",
+  "title": "Name Conflict"
+}

Added value: +{
+  "description": "The additive onboard-response inbox block (agent-inbox SPEC).",
+  "properties": {
+    "docs": {
+      "description": "Tutorial: how the inbox works.",
+      "title": "Docs",
+      "type": "string"
+    },
+    "poll_url": {
+      "description": "Catch-up read for your inbox: GET with header X-API-Key.",
+      "title": "Poll Url",
+      "type": "string"
+    },
+    "script": {
+      "description": "Canonical check-inbox.sh recipe (download, sha256, read, run).",
+      "title": "Script",
+      "type": "string"
+    }
+  },
+  "required": [
+    "poll_url",
+    "script",
+    "docs"
+  ],
+  "title": "OnboardInboxPointer",
+  "type": "object"
+}

Added value: +{
+  "anyOf": [
+    {
+      "$ref": "#/$defs/OnboardInboxPointer"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "description": "Your A2AWire inbox is live. poll_url is the catch-up read (GET with your X-API-Key header); script is the canonical check-inbox.sh recipe; docs is the tutorial."
+}