HISTOR
https://histor.modelmarket.devPublic transparency log for MCP servers. Observes the official MCP registry daily, pins each server's tool set in an append-only Merkle log and issues signed labels when definitions change. Ask it about a server before your agent connects; it never contacts the server you ask about.
Reliability & health
Uptime and response time from our own unpaid probes, plus the reliability score built from them.
Uptime
100.0% avgResponse time
p50 556ms · p95 928msData table
| Bucket | Uptime | Probes | Response time |
|---|---|---|---|
| 10/1/2026, 7:00:00 PM | 100% | 1 | 928ms |
| 10/1/2026, 9:00:00 PM | 100% | 1 | 543ms |
| 10/1/2026, 11:00:00 PM | 100% | 1 | 542ms |
| 10/2/2026, 1:00:00 AM | 100% | 1 | 580ms |
| 10/2/2026, 3:00:00 AM | 100% | 1 | 543ms |
| 10/2/2026, 5:00:00 AM | 100% | 1 | 563ms |
| 10/2/2026, 7:00:00 AM | 100% | 1 | 598ms |
| 10/2/2026, 9:00:00 AM | 100% | 1 | 531ms |
| 10/2/2026, 11:00:00 AM | 100% | 1 | 700ms |
| 10/2/2026, 1:00:00 PM | 100% | 1 | 547ms |
| 10/2/2026, 3:00:00 PM | 100% | 1 | 631ms |
| 10/2/2026, 5:00:00 PM | 100% | 1 | 629ms |
| 10/2/2026, 7:00:00 PM | 100% | 1 | 928ms |
| 10/2/2026, 9:00:00 PM | 100% | 1 | 927ms |
| 10/2/2026, 11:00:00 PM | 100% | 1 | 622ms |
| 10/3/2026, 12:00:00 AM | 100% | 1 | 541ms |
| 10/3/2026, 2:00:00 AM | 100% | 1 | 637ms |
| 10/3/2026, 4:00:00 AM | 100% | 1 | 528ms |
| 10/3/2026, 6:00:00 AM | 100% | 1 | 946ms |
| 10/3/2026, 8:00:00 AM | 100% | 1 | 547ms |
| 10/3/2026, 10:00:00 AM | 100% | 1 | 524ms |
| 10/3/2026, 12:00:00 PM | 100% | 1 | 544ms |
| 10/3/2026, 2:00:00 PM | 100% | 1 | 556ms |
| 10/3/2026, 4:00:00 PM | 100% | 1 | 556ms |
| 10/3/2026, 6:00:00 PM | 100% | 1 | 539ms |
| 10/3/2026, 8:00:00 PM | 100% | 1 | 578ms |
| 10/3/2026, 11:00:00 PM | 100% | 1 | 539ms |
| 10/4/2026, 1:00:00 AM | 100% | 1 | 541ms |
| 10/4/2026, 3:00:00 AM | 100% | 1 | 545ms |
| 10/4/2026, 5:00:00 AM | 100% | 1 | 557ms |
| 10/4/2026, 7:00:00 AM | 100% | 1 | 540ms |
| 10/4/2026, 9:00:00 AM | 100% | 1 | 576ms |
| 10/4/2026, 1:00:00 PM | 100% | 1 | 600ms |
- Availability
- 100
- Latency
- 91
- Security
- 100
- Transparency
- 42
- Activity
- not yet measured
How often it was reachable when we probed it (weight 35%).
How quickly it answers when it is up — fast scores high (weight 20%).
Whether it serves over working TLS / https (weight 15%).
Whether the operator disclosed what it does — description, schema, identity (weight 15%).
Observed on-chain payments to this endpoint's wallet — transactions, volume, and distinct paying wallets over the last month (weight 15%; not yet measured when we have not seen its wallet settle).
Confidence 66% — how much probe evidence backs this score. A thin history is flagged, not hidden.
See the scoring methodology for exactly how each number is computed.
Payment
- Currencies
- —
- Networks
- —
- Facilitator
- unknown
- SDK
- unknown
Operator
- Company
- inferred — unknown
- Jurisdiction
- —
- Registrar
- PDR Ltd. d/b/a PublicDomainRegistry.com
- Domain registered
- 2026-05-22
- Hosting network
- Snowd-Security-OU
- Hosting country
- NL
Operator context is derived from public RDAP/TLS records and unverified. Company and country are only available for endpoints that publish them (an OV/EV TLS certificate or a non-redacted domain record); most endpoints are CDN-fronted and disclose neither.
Linked by wallet — likely same operator
On-chain agent identity and the x402 endpoint that shares its settlement wallet.