# Microgram: process-control-retro-cluster-signals

`station__algovigilance__microgram-process-control-retro-cluster-signals` · native (always callable) · domain `algovigilance` · pv-relevance `pv-core`

Cluster structured signals by structural similarity.

## Agent metadata

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

## Input schema

- `signals_json` *string* (required) — Array of structured signal records as JSON. Each must have: drug (string), event (string), prr (f64), ror (f64), case_count (u64), and optionally smiles (string).
- `threshold` *number* — Tanimoto similarity threshold [0.0, 1.0]. Default: 0.7.

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__algovigilance__microgram-process-control-retro-cluster-signals",
    "arguments": {
      "signals_json": ""
    }
  }
}
```

## Related

- [/tools](/tools) — all 7718 tools
- [/tools/algovigilance__microgram-process-control-retro-cluster-signals](/tools/algovigilance__microgram-process-control-retro-cluster-signals) — HTML page
- [/tools/algovigilance__microgram-process-control-retro-cluster-signals/json](/tools/algovigilance__microgram-process-control-retro-cluster-signals/json) — JSON form (agent-friendly)
- [/api/mcp](/api/mcp) — endpoint
- [/AGENTS.md](/AGENTS.md) — agent guide