# MetaCrate grid agent

This package is the bounded, provider-neutral foundation for the MetaCrate
OpenSim grid agent. It contains a reusable library and the
`metacrate-grid-agent` service binary. The first implementation is deliberately
offline: it publishes a deterministic ready event, accepts control commands,
and shuts down both owned tasks without contacting a grid or LLM. The
`live-grid` feature exposes the side-effect-free owner for the existing
`libremetaverse::GridClient`; later live adapters must extend that manager graph
instead of adding a protocol client.

The LLM connection identity has exactly two resolved fields:
`llm.endpoint_url` and `llm.api_key`. The endpoint is used exactly as supplied;
there are no providers, presets, base-URL rewrites, model catalogs, discovery,
or provider SDKs. `Debug`/`Display` output removes API keys, grid passwords, URL
user information, and URL query values. Secret wrappers are not serializable.

Configuration precedence, from lowest to highest, is built-in defaults, an
optional JSON file, its referenced secret files, then environment values (an
environment-referenced secret file is below a direct environment secret).
Supported secret environment variables are
`METACRATE_AGENT_LLM_API_KEY[_FILE]` and
`METACRATE_AGENT_GRID_PASSWORD[_FILE]`. Secret files must be bounded regular,
non-symlink UTF-8 files containing one line. Operators must restrict their OS
ACLs to the service identity; the core uses only portable `std::fs` checks and
does not assume Unix permission bits.

Run the focused offline gate with:

```sh
cargo test --locked -p metacrate-grid-agent
cargo clippy --locked -p metacrate-grid-agent --all-targets -- -D warnings
cargo run --locked -p metacrate-grid-agent -- \
  --config config/grid-agent.example.json --check-config
cargo run --locked -p metacrate-grid-agent -- \
  --config config/grid-agent.example.json --run-once
```

See [`../../docs/grid-agent-architecture.md`](../../docs/grid-agent-architecture.md)
for queue/task ownership, shutdown, and trust boundaries.