Tracepay
Description
Read-only payment state for USDC on Base/Solana (Bridge, Circle): completed, failed, or delayed.
What our measurements say
Tracepay is a remote MCP server published at tracepay.ai. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 474 ms, placing it among the faster endpoints. It offers a narrow, focused set of 3 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Agent readability score
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| Run | Era | Modern | ms | Legacy | ms | Versions |
|---|---|---|---|---|---|---|
| 2026-09-13 01:33:33 | Legacy | 400 | 833 | 200 | 721 | 2025-11-25 |
| 2026-09-12 23:31:36 | Legacy | 400 | 649 | 200 | 677 | 2025-11-25 |
| 2026-09-12 21:29:15 | Legacy | 400 | 379 | 200 | 430 | 2025-11-25 |
| 2026-09-12 19:27:29 | Legacy | 400 | 371 | 200 | 410 | 2025-11-25 |
| 2026-09-12 17:24:09 | Legacy | 400 | 578 | 200 | 401 | 2025-11-25 |
| 2026-09-12 15:21:42 | Legacy | 400 | 474 | 200 | 432 | 2025-11-25 |
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 405ms → warm 180ms (penalty 225ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
trace_paymentUse this whenever you need to determine whether a supported stablecoin payment completed, failed, or is delayed — where the money currently is, who owns the next step, and what should happen next. Typical triggers: 'the recipient says the payment never arrived', 'this payout is stuck', 'did this transaction go through?'. Give it a Base transaction hash, Solana signature, Bridge transfer ID, Circle payment ID, or a Base/Solana wallet address (USDC). Trace correlates blockchain and provider evidence into one deterministic normalized state: completed/terminal flags, health, current stage and owner, an evidence-backed diagnosis code with a machine-readable suggested action and retry timing, and a knowledge model separating observed facts from inferences from what Trace cannot see (e.g. benefic
inputstringrequiredinput_typestring
get_traceRetrieve an existing Trace payment trace by its trace_id (tr_...), including the stage timeline. Read-only. Same normalized representation as trace_payment.
trace_idstringrequired
list_supported_systemsList what Trace supports and can do: assets (USDC), chains with public tracing (Base, Solana), providers requiring connected credentials (Bridge, Circle), and explicit capability flags (read-only; cannot send, retry, or sign). Call this when unsure whether a payment is in scope for trace_payment.
Availability history
Each block is one measurement round. Green: working response. Amber: responded but the server was returning errors (5xx). Red: no response at all.
Era history
Each cell is one probe run. Faded cells are incomplete probes — one leg did not answer, so the era is inconclusive.
Response time history
The two probe legs separately: modern server/discover and legacy initialize.
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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