check_reliability

Check reliability ratings for APIs and MCP servers using independent synthetic probes and crowdsourced telemetry to assess uptime, latency, and error rates before committing to a service.

Instructions

Look up the independent reliability rating for an API or MCP server. Like checking a restaurant's reviews before booking — see the real uptime, latency, error rate, and community experience before you commit to a service.

Returns a trust score (0-100), current operational status, trend direction, and any known issues. Scores are based on independent synthetic probes and crowdsourced telemetry from real agent traffic — not vendor self-reporting.

Args: service: Service slug (e.g., 'stripe-mcp', 'openai-api') or partial name metrics: Optional list of specific metrics to include: 'uptime', 'latency', 'reliability', 'maintenance', 'community'

Input Schema

TableJSON Schema

Name	Required	Description	Default
`service`	Yes
`metrics`	No

Implementation Reference

src/preflight_mcp/__init__.py:30-73 (handler)

The handler for the `check_reliability` tool, which queries the Preflight API for service reliability metrics.

async def check_reliability(
    service: str,
    metrics: list[str] | None = None,
) -> dict:
    """Look up the independent reliability rating for an API or MCP server.
    Like checking a restaurant's reviews before booking — see the real uptime,
    latency, error rate, and community experience before you commit to a service.

    Returns a trust score (0-100), current operational status, trend direction,
    and any known issues. Scores are based on independent synthetic probes and
    crowdsourced telemetry from real agent traffic — not vendor self-reporting.

    Args:
        service: Service slug (e.g., 'stripe-mcp', 'openai-api') or partial name
        metrics: Optional list of specific metrics to include:
                 'uptime', 'latency', 'reliability', 'maintenance', 'community'
    """

    params = {"service": service}

    if metrics:
        params["metrics"] = ",".join(metrics)

    try:
        async with httpx.AsyncClient(timeout=10) as client:
            resp = await client.get(
                f"{PREFLIGHT_API}/v1/score", params=params, headers=_headers()
            )

            resp.raise_for_status()

            return resp.json()
    except httpx.HTTPStatusError as exc:
        return {
            "error": True,
            "status_code": exc.response.status_code,
            "detail": exc.response.text,
        }
    except (httpx.ConnectError, httpx.TimeoutException) as exc:
        return {
            "error": True,
            "status_code": None,
            "detail": f"Connection failed: {exc}",
        }

src/preflight_mcp/__init__.py:29-30 (registration)
Registration of the `check_reliability` tool using the @mcp.tool decorator.
```
@mcp.tool
async def check_reliability(
```

preflight-mcp