# run-primitive-succession

`station__microgram__run-primitive-succession` · external (needs EXECUTION_BACKEND_URL configured) · domain `microgram` · pv-relevance `pv-core`

Law of Primitive Succession: identify dominant primitive of a system and predict its successor. S_next = S + P_new where P_new is the highest-value missing primitive. Validated across 19 transitions (computing, science, math, PV).

> **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

- `dominant` *string* (required) — Input parameter: dominant
- `has_quantity` *boolean* (required) — Input parameter: has_quantity
- `has_boundary` *boolean* (required) — Input parameter: has_boundary
- `has_comparison` *boolean* (required) — Input parameter: has_comparison
- `has_causality` *boolean* (required) — Input parameter: has_causality
- `has_void` *boolean* (required) — Input parameter: has_void
- `has_state` *boolean* (required) — Input parameter: has_state
- `has_frequency` *boolean* (required) — Input parameter: has_frequency
- `has_sequence` *boolean* (required) — Input parameter: has_sequence

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__microgram__run-primitive-succession",
    "arguments": {
      "dominant": "",
      "has_quantity": false,
      "has_boundary": false,
      "has_comparison": false,
      "has_causality": false,
      "has_void": false,
      "has_state": false,
      "has_frequency": false,
      "has_sequence": false
    }
  }
}
```

## Related

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