io.github.stevemilton/x402-payagent-mcp
payagent
Pay x402 APIs in USDC on Base, Solana, and BNB Chain with spend mandates, receipts, idempotency.
alive probed 2026-10-14
7tools
2.7ktokens in Claude Opus 5.5
2.8ktokens in Claude Code
1.3 %of a 200k context window
1.6ko200k_base estimate
692 msto initialize
13 msto list tools
- Run it
- npx -y @arispay/payagent-mcp@4.1.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- payagent 4.1.0
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-14. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/arispay-inc/payagent-mcp
- Website
- https://arispay.app
- Registry
- active, updated 2026-08-27 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| pay | 369 | 24 % |
| check_payment_signal | 329 | 21 % |
| discover | 238 | 15 % |
| setup | 199 | 13 % |
| history | 151 | 10 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.stevemilton/x402-payagent-mcp)
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.