# Microgram: rust-dev-rust-dev-cargo-expand

`station__algovigilance__microgram-rust-dev-rust-dev-cargo-expand` · native (always callable) · domain `algovigilance` · pv-relevance `pv-core`

Rust Dev Cargo Expand

## Agent metadata

- `idempotent`: true
- `read_only`: true
- `expected_latency_ms`: unknown (not yet contract-tested)
- `cost_tokens_estimate`: unknown

## Input schema

- `item` *string* — Specific item to expand (e.g. "MyStruct" or "my_module::MyStruct")
- `package` *string* — Specific package to expand (for workspace builds). Maps to -p flag.
- `path` *string* — Path to crate directory. Defaults to nexcore workspace root.
- `theme` *string* — Expand only a specific theme: "derive" or "attr" or "proc_macro"

## Example call

```json
POST /api/mcp
Content-Type: application/json

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__algovigilance__microgram-rust-dev-rust-dev-cargo-expand",
    "arguments": {}
  }
}
```

## Related

- [/tools](/tools) — all 7718 tools
- [/tools/algovigilance__microgram-rust-dev-rust-dev-cargo-expand](/tools/algovigilance__microgram-rust-dev-rust-dev-cargo-expand) — HTML page
- [/tools/algovigilance__microgram-rust-dev-rust-dev-cargo-expand/json](/tools/algovigilance__microgram-rust-dev-rust-dev-cargo-expand/json) — JSON form (agent-friendly)
- [/api/mcp](/api/mcp) — endpoint
- [/AGENTS.md](/AGENTS.md) — agent guide