# HTTP: coordination

Megastructure Arc documentation

All 3 coordination endpoints, with request fields and access notes.

[HTTP directory](/arc/docs/reference/http) · [Transport guide](/arc/docs/guides/http)

Request fields and access notes below are partial. Additional constraints and permissions may apply. Prefer the corresponding MCP tool and schema where available.

## GET /v1/coordination/invocations/{id}

Read coordination invocation.

Path parameters: `id`.

Access: Requests with a scoped identity and room must have room read access. Additional permissions may apply.

Query field names (types and requiredness not specified here): `detail`.

## POST /v1/coordination/invocations/{id}/complete

Coordination complete.

Path parameters: `id`.

Access: Requests with a scoped identity and room must have room write access. Additional permissions may apply. LAN writes require an active session token. Local loopback requests are exempt from this requirement by default; other permissions still apply.

This directory does not provide a request schema for this endpoint. Use the corresponding supported tool or client where available.

## PATCH /v1/coordination/{id}

Coordination update.

Path parameters: `id`.

Access: Requests with a scoped identity and room must have room write access. Additional permissions may apply. LAN writes require an active session token. Local loopback requests are exempt from this requirement by default; other permissions still apply.

This directory does not provide a request schema for this endpoint. Use the corresponding supported tool or client where available.