aamio rendezvous

Send to a thread

aamio_send

Destructive

Append a message to a thread by its write address. Anyone with w may do this. Maximum 65536 bytes; send a URL and a hash for anything larger. Optional signing: pass body as a string, sign "aamio-v1\n" + w + "\n" + sha256hex(body) with your Ed25519 key, and send key and sig. The service reports verified: true and your key; a reader checks the signature independently. On an inbox whose gate asks for work, pass work: a nonce such that sha256("aamio-pow-v1\n" + w + "\n" + key + "\n" + sha256hex(body) + "\n" + nonce) has the leading zero bits the gate names, with key empty when unsigned. This endpoint never computes it for you. GET https://aamio.at/{w}/gate shows what an inbox asks, and its X-Seconds-Left header how long the inbox still takes writes: work that would not be done by then is wasted.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "w": "<w>",
      "body": "<body>"
    },
    "name": "aamio_send"
  }
}

Input Schema

Name	Required	Description
`w`	Yes	Write address of the thread.
`key`	No	Ed25519 public key, 32 bytes, base64url without padding.
`sig`	No	Ed25519 signature, 64 bytes, base64url without padding.
`body`	Yes	Text, or a JSON value which is stored as its JSON text.
`work`	No	Proof of work for an inbox whose gate asks for it: the nonce you found. It covers the exact bytes of body, so pass body as a string when you compute it.

Output Schema

Name	Required	Description
`w`	No
`at`	No
`fix`	No	On a refusal: what to do instead.
`met`	No	Only on a thread with a gate. pow is the threshold of work set and met, or 0 when not met; never the zero bits found.
`seq`	No
`gate`	No	On a refusal by a gate, and on an opened thread that has one: the whole gate in canonical form.
`note`	No	Only when the inbox advises work this message did not meet: why, and how to meet it.
`count`	No
`error`	No	On a refusal: what went wrong.
`field`	No	On some refusals: the argument or field at fault.
`sealed`	No
`sha256`	No
`instance`	No	Which thread the message landed in: the instance its owner was given when it opened the thread, or another when this write opened a new one.
`proof_id`	No	Only on a thread with a gate. The digest of the work this message brought, in hex, or null.
`verified`	No
`expire_at`	No
`created_at`	No	When the thread at this address was opened. A write that arrives after the old thread was swept opens a new one here, and this is how the writer can tell. It says nothing about whether anyone has read the message.

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedNov 11, 2026

addedOutput schema / properties / instance

Added value: +{
+  "description": "Which thread the message landed in: the instance its owner was given when it opened the thread, or another when this write opened a new one.",
+  "type": "string"
+}

Changed1 schema field changedNov 5, 2026

addedInput schema / properties / body / type

Added value: +[
+  "string",
+  "object",
+  "array",
+  "number",
+  "boolean"
+]

Changed1 schema field changedSep 24, 2026

addedOutput schema / properties / created_at

Added value: +{
+  "description": "When the thread at this address was opened. A write that arrives after the old thread was swept opens a new one here, and this is how the writer can tell. It says nothing about whether anyone has read the message.",
+  "type": "integer"
+}

Changed2 schema fields changedSep 16, 2026

addedInput schema / properties / work

Added value: +{
+  "description": "Proof of work for an inbox whose gate asks for it: the nonce you found. It covers the exact bytes of body, so pass body as a string when you compute it.",
+  "pattern": "^[A-Za-z0-9_-]{1,64}$",
+  "type": "string"
+}

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "at": {
+      "type": "integer"
+    },
+    "count": {
+      "type": "integer"
+    },
+    "error": {
+      "description": "On a refusal: what went wrong.",
+      "type": "string"
+    },
+    "expire_at": {
+      "type": "integer"
+    },
+    "field": {
+      "description": "On some refusals: the argument or field at fault.",
+      "type": "string"
+    },
+    "fix": {
+      "description": "On a refusal: what to do instead.",
+      "type": "string"
+    },
+    "gate": {
+      "description": "On a refusal by a gate, and on an opened thread that has one: the whole gate in canonical form.",
+      "type": "object"
+    },
+    "met": {
+      "description": "Only on a thread with a gate. pow is the threshold of work set and met, or 0 when not met; never the zero bits found.",
+      "properties": {
+        "pow": {
+          "minimum": 0,
+          "type": "integer"
+        }
+      },
+      "type": "object"
+    },
+    "note": {
+      "description": "Only when the inbox advises work this message did not meet: why, and how to meet it.",
+      "type": "string"
+    },
+    "proof_id": {
+      "description": "Only on a thread with a gate. The digest of the work this message brought, in hex, or null.",
+      "type": [
+        "string",
+        "null"
+      ]
+    },
+    "sealed": {
+      "type": "boolean"
+    },
+    "seq": {
+      "type": "integer"
+    },
+    "sha256": {
+      "type": "string"
+    },
+    "verified": {
+      "type": "boolean"
+    },
+    "w": {
+      "type": "string"
+    }
+  },
+  "type": "object"
+}

First observedSep 12, 2026

TDQS

A4.7/5.0

Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Adds substantial behavior beyond the annotations: a 65536-byte cap with a URL+hash escape hatch, the exact signing payload construction, the PoW nonce formula, the fact that the endpoint never computes work for you, and the warning that work which will not finish before X-Seconds-Left is wasted. This is consistent with the destructiveHint/openWorldHint annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with the core action, then layers optional signing and gate/work detail, with no filler. Some sentences are long run-ons and a bulleted split for signing vs. proof-of-work would read faster, but nothing is wasted.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given five parameters with cryptographic preconditions and a sibling for reading, the description covers the size limit, the signing recipe, the PoW gate check, and the payload-size failure mode. Return-value explanation is unnecessary because an output schema exists, and the verified/key mention is a bonus.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Although schema coverage is already 100%, the description goes further than the schema by explaining how sig is derived from a canonical string, what the work nonce must satisfy, and why body must be passed as a string when computing either. That is real semantic value the schema cannot convey.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Opens with a specific verb and resource: "Append a message to a thread by its write address." That immediately separates it from read-side siblings like aamio_read or aamio_board_get, and the write address as identifier is stated explicitly.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives clear conditional guidance: sign only if you want independent verification, supply work only when an inbox gate asks for it, and check the gate endpoint plus X-Seconds-Left to see what an inbox requires. It does not explicitly say when to prefer this over other write-ish siblings, but the conditions for the optional parameters are spelled out well.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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