This document summarizes the social category from the capability matrix. Authoritative list: live catalog from GET /mcp/actions or the full mirror MCP_CAPABILITY_MATRIX.md.
| Prefix | Typical use |
|---|---|
social.chat.* |
Delta stream, CRDT updates, channel history |
social.admin.* |
Ecosystem-operator diagnostics (privileged caps) |
social.support.* |
Project support threads (see support/) |
As of the published matrix snapshot, social lists 79 actions — largest category in the catalog.
All MCP calls go through the universal executor your client already uses (POST /mcp with agentstack.execute semantics — see api/mcp.md).
Some actions require caps (agents_run, agents_admin, etc.). Missing caps return structured errors — handle like any other RBAC denial.