Leaderboard/preflight
MCP ServerScored via MCP protocol probing: initialize handshake, tools/list conformance, and ping + tool invocation performance.

preflight

Check if your MCP server is ready to publish on the MCP Registry, Smithery, or npm. Preflight validates your server's actual artifacts — `server.json`, `package.json`, `smithery.yaml` — against the documented requirements of each directory. Every finding includes the evidence found, the directory rule it maps to, and the exact fix. ## What it checks - **MCP Registry** — server.json schema, name format, packages/remotes config, transport type, npm mcpName ownership, PyPI README marker - **Smithery** — Streamable HTTP transport, public HTTPS endpoint, server-card presence - **npm** — name, version, entry point (bin/main) Each finding is tagged with evidence level (`verified_from_artifact` or `inferred`), rule type (`hard_requirement`, `directory_convention`, or `heuristic`), and a source URL linking to the directory documentation. ## How to use Call `check_publish_readiness` with raw artifact contents (all fields optional): - `manifest` — your server.json - `package_json` — your package.json - `smithery_yaml` — your smithery.yaml - `pyproject_toml` — your pyproject.toml - `readme` — your README - `target_directories` — optional array of `mcp_registry`, `smithery`, `npm` Returns a verdict (`checks_pass`, `fixable`, or `not_ready`), per-directory readiness, and evidence-backed findings with concrete fixes. Zero dependencies. No LLM calls. No authentication. No PII collection.

50/100
Operational Score
Score Breakdown
Availability30/30
Conformance10/30
Performance10/40
Key Metrics
Uptime 30d
100.0%
P95 Latency
312.6ms
Conformance
Fail
Trend
Stable
What's Being Tested
Availability
HTTP health check to the service endpoint
Responded with HTTP 401 in 312ms
ConformanceNot tested
MCP initialize handshake + tools/list
Performance
MCP ping + zero-arg tool invocation benchmarking
P95 latency: 312ms, task completion: 0%
Recent Probe Results
TimestampStatusLatencyConformance
May 16, 2026success312.6msPass
Apr 28, 2026success209.3msPass
Apr 28, 2026success158.5msPass
Apr 28, 2026success147.2msPass
Apr 21, 2026success236.6msPass
Apr 21, 2026success229.1msPass
Apr 16, 2026success324msPass
Apr 16, 2026success383.8msPass
Apr 16, 2026success214.3msPass
Apr 16, 2026success202.3msPass
Source Registries
smithery
First Seen
Apr 12, 2026
Last Seen
May 16, 2026
Last Probed
May 16, 2026