io.github.sadri-dridi/open-agent-utility-index
Open Agent Utility Index
Transparent public utilities for agents. Requests are counted without storing identifiers.
alive probed 2026-10-05 · HTTP 200
30tools
13ktokens in Claude Opus 5.5
13ktokens in Claude Code
6.3 %of a 200k context window
7.2ko200k_base estimate
422 msto initialize
31 msto list tools
- Endpoint
- https://agent-observatory-sensor.nolimit-observatory.workers.dev/mcp (streamable-http)
- Host
- agent-observatory-sensor.nolimit-observatory.workers.dev
- Protocol
- 2025-03-26
- Reports itself as
- open-agent-utility-index 3.0.0
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Registry
- active, updated 2026-09-06 · registry entry
- Reachable
- 6 of the last 6 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| agent-ads-index | 295 | 4 % |
| agent-tool-index | 277 | 4 % |
| people-search-index | 272 | 4 % |
| normalize-url | 240 | 3 % |
| citation | 240 | 3 % |
Same tool set as 24 other servers
These registry entries have the same tool names and the same schema sizes.
- io.github.sadri-dridi/aria-role-ok agent-observatory-sensor.nolimit-observatory.workers.dev
- io.github.sadri-dridi/csproj-ok agent-observatory-sensor.nolimit-observatory.workers.dev
- io.github.sadri-dridi/dst-hint-utc agent-observatory-sensor.nolimit-observatory.workers.dev
- io.github.sadri-dridi/eircode-ok agent-observatory-sensor.nolimit-observatory.workers.dev
- io.github.sadri-dridi/focus-order-ok agent-observatory-sensor.nolimit-observatory.workers.dev
- io.github.sadri-dridi/gemfile-ok agent-observatory-sensor.nolimit-observatory.workers.dev
- io.github.sadri-dridi/gh-commit-ok agent-observatory-sensor.nolimit-observatory.workers.dev
- io.github.sadri-dridi/gh-release-ok agent-observatory-sensor.nolimit-observatory.workers.dev
- io.github.sadri-dridi/git-tag-ok agent-observatory-sensor.nolimit-observatory.workers.dev
- io.github.sadri-dridi/h1-count agent-observatory-sensor.nolimit-observatory.workers.dev
- io.github.sadri-dridi/heading-level agent-observatory-sensor.nolimit-observatory.workers.dev
- io.github.sadri-dridi/hex-key-len agent-observatory-sensor.nolimit-observatory.workers.dev
- and 12 more
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-05 16:05 | alive | 422 ms | 30 | 13k | 7.2k |
| 2026-10-05 00:51 | alive | 20 ms | 30 | 7.2k | |
| 2026-10-04 10:09 | alive | 30 ms | 30 | 7.2k | |
| 2026-10-04 08:02 | alive | 23 ms | 30 | 7.2k | |
| 2026-10-03 20:42 | alive | 48 ms | 30 | 7.2k | |
| 2026-10-03 17:58 | alive | 52 ms | 30 | 7.2k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.sadri-dridi/open-agent-utility-index)
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.