io.github.dainidude/preflight
Preflight
Is the Preflight MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-14.
Pay-per-call smart-contract security: scans, tx simulation, and token risk via x402 (USDC on Base).
alive probed 2026-11-14 · HTTP 200
- Endpoint
- https://preflight--preflight-api-mcp.modal.run/mcp (streamable-http)
- Host
- preflight--preflight-api-mcp.modal.run
- Protocol
- 2025-11-25
- Reports itself as
- preflight 0.1.0
- Capabilities
- prompts, resources, tools
- Instructions
- none
- Of a 1M window
- <0.1 % of a 1M context window
- Count
- 793 tokens in Claude Opus 5.5, exact, measured 2026-11-14. With the Claude Code prefix mcp__…__ on each tool name: 825. The o200k_base estimate is 444. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/dainidude/preflight-x402
- Registry
- active, updated 2026-11-13 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.79×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| preflight_sim | 339 | 190 | 43 % |
| preflight_check | 200 | 112 | 25 % |
| preflight_token_risk | 179 | 100 | 23 % |
| preflight_pricing | 75 | 42 | 9 % |
Compare this server with others.
More servers
Servers that mention preflight.
- objekts Production Desk ai.objekts.mcp/production-desk · alive
- PreClick — An MCP-native URL preflight scanning service for autonomous agents. ai.preclick/preclick-mcp · alive
- PreClick — An MCP-native URL preflight scanning service for autonomous agents (formerly URLCheck). ai.urlcheck/urlcheck-mcp · alive
- cc.ticktape/mcp · alive
- Agent Preflight com.agent-preflight/agent-preflight · alive
- Agent Distribution com.agentdistributionservices/agent-distribution · alive
- Silent Door Repository Handoff Planner com.aibitious.silent/repository-safety-preflight · alive
- Butterfly Delta Preflight com.butterflydelta/preflight · alive
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The server answers initialize and tools/list. Nothing to fix.
Fixed something? Probe it now, with the same steps as the daily run. This page updates with the next daily run.