dev.past/past
past.dev
Memory for AI agents. Ask what is true now, get the facts back with their dated sources.
alive probed 2026-10-13 · HTTP 200
3tools
383tokens in Claude Opus 5.5
401tokens in Claude Code
0.2 %of a 200k context window
213o200k_base estimate
378 msto initialize
231 msto list tools
- Endpoint
- https://past.dev/mcp (streamable-http)
- Host
- past.dev
- Protocol
- 2025-06-18
- Reports itself as
- past-docs 1.0.0
- Capabilities
- tools
- Instructions
- 195 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-13. Counted again when the tool definitions change. Method.
- Website
- https://past.dev/docs/mcp/overview
- Registry
- active, updated 2026-09-30 · registry entry
- Reachable
- 7 of the last 7 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| read_page | 92 | 43 % |
| search_docs | 87 | 41 % |
| list_pages | 34 | 16 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-13 11:11 | alive | 876 ms | 3 | 383 | 213 |
| 2026-10-05 13:59 | alive | 378 ms | 3 | 375 | 209 |
| 2026-10-05 00:24 | alive | 255 ms | 3 | 209 | |
| 2026-10-04 10:00 | alive | 489 ms | 3 | 209 | |
| 2026-10-04 07:53 | alive | 680 ms | 3 | 209 | |
| 2026-10-03 20:33 | alive | 1.1 s | 3 | 209 | |
| 2026-10-03 17:50 | alive | 1.3 s | 3 | 209 |
Badge and feed
[](https://mcpcost.ulehla.dev/s/dev.past/past)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.