# highway-quality

`station__highway__highway-quality` · external (needs EXECUTION_BACKEND_URL configured) · domain `highway` · pv-relevance `non-pv`

Score a tool against the 7 Ideal Tool Qualities.

> **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

- `calls_per_session` *number* (required)
- `impl_lines` *integer* (required) — Lines of implementation code
- `param_count` *integer* (required) — Number of parameters
- `stable_versions` *integer* (required)
- `tool_name` *string* (required) — Tool name
- `typed_errors` *boolean* (required)
- `validates_input` *boolean* (required)

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__highway__highway-quality",
    "arguments": {
      "calls_per_session": 0,
      "impl_lines": 0,
      "param_count": 0,
      "stable_versions": 0,
      "tool_name": "",
      "typed_errors": false,
      "validates_input": false
    }
  }
}
```

## Related

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