io.github.apolito53/launchcheck-x402
LaunchCheck x402
Paid x402 MCP tool for stress-testing launch and marketing copy before publication.
alive probed 2026-10-05 · HTTP 200
1tools
801tokens in Claude Opus 5.5
814tokens in Claude Code
0.4 %of a 200k context window
452o200k_base estimate
250 msto initialize
81 msto list tools
- Endpoint
- https://launchcheck-x402.fly.dev/mcp (streamable-http)
- Host
- launchcheck-x402.fly.dev
- Protocol
- 2025-11-25
- Reports itself as
- ReactionCheck x402 1.0.0
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Website
- https://launchcheck-x402.fly.dev/docs
- Registry
- active, updated 2026-08-15 · registry entry
- Reachable
- 6 of the last 6 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| reaction_check | 452 | 100 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-05 14:32 | alive | 250 ms | 1 | 801 | 452 |
| 2026-10-05 00:32 | alive | 200 ms | 1 | 452 | |
| 2026-10-04 10:03 | alive | 386 ms | 1 | 452 | |
| 2026-10-04 07:57 | alive | 801 ms | 1 | 452 | |
| 2026-10-03 20:36 | alive | 486 ms | 1 | 452 | |
| 2026-10-03 17:52 | alive | 457 ms | 1 | 452 |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.apolito53/launchcheck-x402)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.