io.github.base-buzz/preflight
PayStage Preflight
Is the PayStage Preflight MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-12.
Evaluate x402 PaymentRequired against a local spending policy before an agent pays
alive probed 2026-11-14 · unchanged since 2026-11-12
- Run it
- npx -y @paystage/preflight@0.2.3 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- paystage-preflight 0.2.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- <0.1 % of a 1M context window
- Count
- 148 tokens in Claude Opus 5.5, exact, measured 2026-11-12. With the Claude Code prefix mcp__…__ on each tool name: 156. The o200k_base estimate is 75. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/base-buzz/paystage
- Website
- https://paystage.xyz
- Registry
- active, updated 2026-11-11 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.97×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| evaluate_mcp_payment | 148 | 75 | 100 % |
Compare this server with others, or with the servers that share its tool set.
Same tool set as 1 other server
These registry entries have the same tool names and the same schema sizes.
- xyz.paystage/preflight npmjs.com
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- ČSFD io.github.bartholomej/node-csfd-api · alive
- io.github.bartokulus/openfoot-mcp · alive
- B2match (unofficial) io.github.barzoj/b2match-mcp · alive
- Somtoday (unofficial) io.github.barzoj/somtoday-mcp · alive
- io.github.batchwatch/batchwatch-mcp · alive
- io.github.batook22/project-knowledge-mcp · alive
- io.github.bats64mgutsi/nextrole-mcp-proxy · alive
- io.github.bayesian-energy/convexity-mcp · alive
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.