# run-perturbation-boundary-projector

`station__microgram__run-perturbation-boundary-projector` · external (needs EXECUTION_BACKEND_URL configured) · domain `microgram` · pv-relevance `pv-core`

Routes a perturbation pattern to the appropriate evaluation strategy based on boundary data availability. Implements the core architectural innovation: compute the interaction once, evaluate at any boundary. Exercises ∂ (Boundary) as a first-class parameterizable object.

> **Note:** This tool routes through an external execution backend. If `EXECUTION_BACKEND_URL` is unset on the server, calls return JSON-RPC error `-32603 "Tool execution backend not configured"`. Tools with `backend: native` execute in-process and are always callable.

## Agent metadata

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

## Input schema

- `perturbation_layers_available` *integer* (required) — Input parameter: perturbation_layers_available
- `cross_boundary_signals` *integer* (required) — Input parameter: cross_boundary_signals
- `boundary_type` *string* (required) — Input parameter: boundary_type
- `has_qsp_model` *boolean* (required) — Input parameter: has_qsp_model
- `historical_reports` *integer* (required) — Input parameter: historical_reports

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__microgram__run-perturbation-boundary-projector",
    "arguments": {
      "perturbation_layers_available": 0,
      "cross_boundary_signals": 0,
      "boundary_type": "",
      "has_qsp_model": false,
      "historical_reports": 0
    }
  }
}
```

## Related

- [/tools](/tools) — all 3062 tools
- [/tools/microgram__run-perturbation-boundary-projector](/tools/microgram__run-perturbation-boundary-projector) — HTML page
- [/tools/microgram__run-perturbation-boundary-projector/json](/tools/microgram__run-perturbation-boundary-projector/json) — JSON form (agent-friendly)
- [/api/mcp](/api/mcp) — endpoint
- [/AGENTS.md](/AGENTS.md) — agent guide