Official MCP RegistryListed
probe402
Independent health, price and history for x402/MPP endpoints. Metered over x402; free grade on web.
First seen 2 Oct 2026. Evidence as of 30 Oct 2026.
2
Tools
From an anonymous probe
1
Source listings
Each with its own history
8
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| probe402_endpoint_grade | The Machine Commerce Observatory: independent readings of x402 and MPP endpoints — alive right now, quoting what, and how fast? Probed on a published schedule under one published rubric, every reading traceable to a retained capture. Blocked and rate-limited are told apart from unreachable at capture time, so a defended endpoint is never reported as dead. Call before paying an unfamiliar endpoint, or to check whether one you use has repriced or rotated its payTo. This tool is the FREE grade: current observation plus 7 days of counts, by endpoint_id or by url. The same record our published reports are written from. | Read-only |
| probe402_endpoint_history | The Machine Commerce Observatory: independent readings of x402 and MPP endpoints — alive right now, quoting what, and how fast? Probed on a published schedule under one published rubric, every reading traceable to a retained capture. Blocked and rate-limited are told apart from unreachable at capture time, so a defended endpoint is never reported as dead. Call before paying an unfamiliar endpoint, or to check whether one you use has repriced or rotated its payTo. | Read-only |
Change history
- probe402_endpoint_history: input schema changed
- probe402_endpoint_history: annotations changed
- probe402_endpoint_grade: title changed
- probe402_endpoint_grade: input schema changed (+url)
- probe402_endpoint_grade: description changed (+"counts, by endpoint_id or by url." -"counts.")
- probe402_endpoint_grade: annotations changed
- probe402_endpoint_history: description changed (+"published schedule" -"fixed clock")
- probe402_endpoint_grade: description changed (+"published schedule" -"fixed clock")
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | com.probe402/endpoint-history | 2 Oct 2026 | 30 Oct 2026 | 1 |