## §SELF — miscsubjects capability (paste without context)
**Principle:** Self-explaining payload — no external context required. This _self block is the capability: what it is, how to run it, how to change it, and where to look next.
**Path:** OIP > FED > FED_SEND
**Capability:** `FED_SEND` — Send a signed federation message (oip-message/1) from the home agent to a remote agent at ANOTHER domain, and return that agent's signed reply. Cross-domain agent-to-agent messaging; the two current test nodes are separately deployed under one operator.
**When to use:** coordinate with an agent on a different domain. The recipient's signing key + inbox come from its https://<domain>/.well-known/oip.json; the reply signature is verified before it is trusted.
**RUN NOW (open this URL):** https://miscsubjects.com/api/dispatch?invoke=FED_SEND&body=buttercup%40oip-peer.massoumi-cyrus.workers.dev%7Cquery%7Cwhat%20time%20is%20it&share=<TOKEN>
**Example call:** [FED_SEND]buttercup@oip-peer.massoumi-cyrus.workers.dev|query|what time is it[/FED_SEND]
- **type · runner:** tool · fn · federation
- **run it:** Open run_now (URL, fires the example), or POST https://miscsubjects.com/api/dispatch {"key":"FED_SEND","body":"buttercup@oip-peer.massoumi-cyrus.workers.dev|query|what time is it"}. From the router: [FED_SEND]buttercup@oip-peer.massoumi-cyrus.workers.dev|query|what time is it[/FED_SEND]
- **inputs:** {"args":"recipient|kind|rest — recipient=agent@domain. kind=query|invoke."}
- **outputs:** { ok, result, invocation, yield, _self } — result is this object's output; yield is tokens/cost/material; invocation is the ledgered record.
- **auth · risk:** none · low
### What this token can do here (computed for: public)
Only moves this credential can take are listed. The server enforces scope regardless; an omitted move would be denied anyway.
- **contract** — GET https://miscsubjects.com/api/dispatch?key=FED_SEND&format=markdown → this object's full contract (public docs plane)
- **confirm** — GET https://miscsubjects.com/api/dispatch?confirm=INV_ID → public proof that an invocation happened — no credential needed
### Machine Contract
- Read this article first; do not infer the row shape from memory.
- If acting with a URL-only tool, open run_now after replacing placeholder args.
- If the call returns ran:false or proof.ok:false, read the receipt and repair the failed invocation instead of narrating success.
- If the token denies the call, report the denial exactly; do not switch to a broader action unless the owner supplied a broader token.
### Invocation, Ledger, Repair
- root tree: https://miscsubjects.com/api/dispatch?map=1&format=markdown
- parent system article: https://miscsubjects.com/api/dispatch?map=FED&format=markdown
- append-only ledger: https://miscsubjects.com/api/invocations?object_id=FED_SEND
- receipt pattern: https://miscsubjects.com/api/dispatch?receipt=inv_ID&share=<TOKEN>
- replay: POST /api/dispatch {"replay":"inv_ID"}
- repair: POST /api/dispatch {"key":"FED_SEND","body":"corrected args","repairs":"inv_ID"}
### Troubleshooting
- **unknown key** — Use the did_you_mean links or ask URL; never guess another key. · https://miscsubjects.com/api/dispatch?ask=FED_SEND
- **argument/body mismatch** — Read inputs/example_args here, then retry with repairs: inv_ID so lineage closes. · https://miscsubjects.com/api/dispatch?key=FED_SEND
- **expired or corrupted token** — Report token_expired/token_corrupted from the response; owner mints a fresh scoped link. · https://miscsubjects.com/api/dispatch?explain=1&share=<TOKEN>
- **tool returned ok:false / exit nonzero** — Do not call it sent. Read the receipt, correct the body, fire a repair. · https://miscsubjects.com/api/dispatch?receipt=inv_ID&share=<TOKEN>
### Logical proof (verify each step)
1. Every capability is an invokable object with its own _self — this block. → https://miscsubjects.com/api/dispatch?key=FED_SEND
2. You run it by POSTing to /api/dispatch; in a model turn the router tag is [FED_SEND]args[/FED_SEND]. → https://miscsubjects.com/api/dispatch?registry=1
3. Every invocation is ledgered with actor, cost, and material/waste. → https://miscsubjects.com/api/invocations?object_id=FED_SEND
4. You can ask the build for capabilities in plain language. → https://miscsubjects.com/api/dispatch?ask=Send%20a%20signed%20federation%20message%20(oip-me
5. The whole build is one self-describing map, with the terminal key. → https://miscsubjects.com/api/dispatch?build=1
### Where to look next
- **registry** — Every capability, self-describing · https://miscsubjects.com/api/dispatch?registry=1
- **ask** — Ask the build what to use, in plain language · https://miscsubjects.com/api/dispatch?ask=<question>
- **history** — This capability's invocation history — its edges · https://miscsubjects.com/api/invocations?object_id=FED_SEND
- **build** — The whole build as one map (terminal key) · https://miscsubjects.com/api/dispatch?build=1
*Self-explaining. Not project knowledge — fetch specifics from the links above.*