# run-transbeyesian-propagator

`station__microgram__run-transbeyesian-propagator` · external (needs EXECUTION_BACKEND_URL configured) · domain `microgram` · pv-relevance `pv-core`

Transbeyesian belief propagator: computes cross-domain signal updates using shared primitive structure (transfer_weight) as the propagation channel. posterior_B = prior_B * (1 + weight * evidence_A / threshold). Higher transfer weight + weaker prior = stronger update.

> **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

- `source_prr` *number* (required) — Input parameter: source_prr
- `signal_threshold` *number* (required) — Input parameter: signal_threshold
- `prior_strength` *string* (required) — Input parameter: prior_strength
- `transfer_weight` *string* (required) — Input parameter: transfer_weight

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__microgram__run-transbeyesian-propagator",
    "arguments": {
      "source_prr": 0,
      "signal_threshold": 0,
      "prior_strength": "",
      "transfer_weight": ""
    }
  }
}
```

## Related

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