Preflight
Health and quality monitoring for the MCP ecosystem.
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What it can do
- Preflight Check: Check the current health status of any MCP server. Returns real-time status (healthy/degraded/down/auth_required/payment_required/malformed), latency, uptime, and tool count. Call thi
- Preflight Leaderboard: Get the current reliability leaderboard for all monitored MCP servers. Shows status, latency, and tool count. Ranked: healthy → degraded → auth_required → malformed → down.
- Preflight Schema Changes: See recent schema changes across monitored MCP servers — which tools were added, removed, or had breaking parameter changes, and when.
What data it sees
Do you need an account
No: the server works without sign-in
Health and quality monitoring for the MCP ecosystem. Check any server's reliability before your agent depends on it.
Preflight monitors 18,000+ MCP servers every 10 minutes, tracking uptime, latency, schema stability, and description quality. Three tools:
- preflight_check — real-time health status, latency, uptime, and quality score for any MCP server
- preflight_leaderboard — the most and least reliable servers this week
- preflight_schema_changes — what changed in a server's tool schema and when
Why use it: agents that call unreliable tools fail silently and waste tokens. A one-call preflight check prevents that. Think of it as SSL for tool calls — verify before you trust.
Server tool list (3)
Raw names from tools/list. Only developers need these.
| preflight_check | Check the current health status of any MCP server. Returns real-time status (healthy/degraded/down/auth_required/payment_required/malformed), latency, uptime, and tool count. Call this before your agent relies on an external tool to avoid silent failures. |
| preflight_leaderboard | Get the current reliability leaderboard for all monitored MCP servers. Shows status, latency, and tool count. Ranked: healthy → degraded → auth_required → malformed → down. |
| preflight_schema_changes | See recent schema changes across monitored MCP servers — which tools were added, removed, or had breaking parameter changes, and when. |