PostFast
Description
Schedule and publish social media posts to 11 platforms (X, Instagram, Facebook, TikTok, LinkedIn, YouTube, Threads, Pinterest, Bluesky, Telegram, Google Business Profile, and more), straight from Claude, ChatGPT, or Cursor Hosted MCP server with OAuth, so there is no API key and nothing to self-host. Draft, schedule, approve, publish, and pull post analytics in natural language. 15 tools
What our measurements say
PostFast is a remote MCP server published at mcp.postfa.st. It has been probed 25 times since 9/10/2026. It answered in 25 of them (100.0%), a near-uninterrupted record. Median response time is 228 ms, placing it among the faster endpoints. Its tool list could not be read; the server is closed to direct calls. It answers direct calls with an authentication wall.
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 04:35:29 | Auth-gated | 400 | 203 | 401 | 192 | — |
| 2026-09-13 01:33:33 | Auth-gated | 400 | 207 | 401 | 206 | — |
| 2026-09-12 23:31:36 | Auth-gated | 400 | 242 | 401 | 230 | — |
| 2026-09-12 21:29:15 | Auth-gated | 400 | 344 | 401 | 354 | — |
| 2026-09-12 19:27:29 | Auth-gated | 400 | 304 | 401 | 315 | — |
| 2026-09-12 17:24:09 | Auth-gated | 400 | 196 | 401 | 196 | — |
| 2026-09-12 15:21:42 | Auth-gated | 400 | 219 | 401 | 239 | — |
| 2026-09-12 13:29:16 | Auth-gated | 400 | 245 | 401 | 231 | — |
| 2026-09-12 11:39:06 | Auth-gated | 400 | 341 | 401 | 336 | — |
| 2026-09-12 09:47:15 | Auth-gated | 400 | 246 | 401 | 246 | — |
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: Auth-gated
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