Primary Sources
Free primary-source APIs across 8 categories, with provenance envelopes.
endpoint: https://primary-sources-mcp.vercel.app/mcp
registry: io.github.simonmak-ascent/primary-sources-mcp
D
recent success 0% (30 probes) ·
MCP handshake FAILED
· protocol —
TLS valid (45d left) · latency 106.0 ms ·
HTTP 404 · auth ? ·
tools —
manifest —
· drift events seen here: 0
Embed this grade
<a href="https://golemreach.com/trust/s/24441"> <img src="https://golemreach.com/trust/badge/24441.svg" alt="golemreach trust grade"></a>
Recent probes
| time (UTC) | ok | grade | mcp | latency | tls | tools | hash |
|---|---|---|---|---|---|---|---|
| 2026-10-13T18:30:47Z | ✗ | D | ✗ | 106.0 ms | 45d | — | — |
| 2026-10-13T12:30:40Z | ✗ | D | ✗ | 55.0 ms | 45d | — | — |
| 2026-10-13T06:29:27Z | ✗ | D | ✗ | 86.0 ms | 45d | — | — |
| 2026-10-13T00:29:12Z | ✗ | D | ✗ | 84.0 ms | 45d | — | — |
| 2026-10-12T18:28:51Z | ✗ | D | ✗ | 56.0 ms | 46d | — | — |
| 2026-10-12T12:28:17Z | ✗ | D | ✗ | 109.0 ms | 46d | — | — |
| 2026-10-12T06:27:23Z | ✗ | D | ✗ | 88.0 ms | 46d | — | — |
| 2026-10-12T00:27:08Z | ✗ | D | ✗ | 64.0 ms | 46d | — | — |
| 2026-10-11T18:26:41Z | ✗ | D | ✗ | 79.0 ms | 47d | — | — |
| 2026-10-11T12:26:16Z | ✗ | D | ✗ | 74.0 ms | 47d | — | — |
| 2026-10-11T06:25:47Z | ✗ | D | ✗ | 170.0 ms | 47d | — | — |
| 2026-10-11T00:24:07Z | ✗ | D | ✗ | 61.0 ms | 47d | — | — |
| 2026-10-10T18:22:38Z | ✗ | D | ✗ | 93.0 ms | 48d | — | — |
| 2026-10-10T12:21:19Z | ✗ | D | ✗ | 148.0 ms | 48d | — | — |
| 2026-10-10T06:19:18Z | ✗ | D | ✗ | 61.0 ms | 48d | — | — |
| 2026-10-10T00:18:51Z | ✗ | D | ✗ | 72.0 ms | 48d | — | — |
| 2026-10-09T18:18:34Z | ✗ | D | ✗ | 92.0 ms | 49d | — | — |
| 2026-10-09T12:18:05Z | ✗ | D | ✗ | 166.0 ms | 49d | — | — |
| 2026-10-09T06:17:53Z | ✗ | D | ✗ | 123.0 ms | 49d | — | — |
| 2026-10-09T00:15:59Z | ✗ | D | ✗ | 71.0 ms | 49d | — | — |
| 2026-10-08T18:14:56Z | ✗ | D | ✗ | 124.0 ms | 50d | — | — |
| 2026-10-08T12:14:05Z | ✗ | D | ✗ | 101.0 ms | 50d | — | — |
| 2026-10-08T06:13:15Z | ✗ | D | ✗ | 343.0 ms | 50d | — | — |
| 2026-10-08T00:12:43Z | ✗ | D | ✗ | 92.0 ms | 50d | — | — |
| 2026-10-07T18:12:16Z | ✗ | D | ✗ | 108.0 ms | 51d | — | — |
| 2026-10-07T12:10:24Z | ✗ | D | ✗ | 107.0 ms | 51d | — | — |
| 2026-10-07T06:10:17Z | ✗ | D | ✗ | 149.0 ms | 51d | — | — |
| 2026-10-07T00:09:51Z | ✗ | D | ✗ | 151.0 ms | 51d | — | — |
| 2026-10-06T18:09:14Z | ✗ | D | ✗ | 82.0 ms | 52d | — | — |
| 2026-10-06T12:08:09Z | ✗ | D | ✗ | 100.0 ms | 52d | — | — |