# mutualism-test

`station__helix__mutualism-test` · external (needs EXECUTION_BACKEND_URL configured) · domain `helix` · pv-relevance `non-pv`

Test whether an action satisfies the mutualism constraint: does it produce ∃ for self WITHOUT reducing ∃ for others? Conservation says ∃_self and ∃_other share the same constraint. Producing yours by destroying theirs violates conservation.

> **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

- `existence_self_before` *number* (required) — ∃ of self before the action [0,1]
- `existence_self_after` *number* (required) — ∃ of self after the action [0,1]
- `existence_other_before` *number* (required) — ∃ of other(s) before the action [0,1]
- `existence_other_after` *number* (required) — ∃ of other(s) after the action [0,1]

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__helix__mutualism-test",
    "arguments": {
      "existence_self_before": 0,
      "existence_self_after": 0,
      "existence_other_before": 0,
      "existence_other_after": 0
    }
  }
}
```

## Related

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