com.narrowhighway/concordance
narrow-highway
Deterministic claim verification with receipts across ~60 domains. No model in the loop.
alive probed 2026-10-09 · HTTP 200
101tools
24ktokens in Claude Opus 5.5
25ktokens in Claude Code
12.2 %of a 200k context window
14ko200k_base estimate
289 msto initialize
270 msto list tools
- Endpoint
- https://narrowhighway.com/mcp (streamable-http)
- Host
- narrowhighway.com
- Protocol
- 2025-06-18
- Reports itself as
- narrow-highway 2.0.0a0
- Capabilities
- tools
- Instructions
- 1 863 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-09. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/matharrismma/concordance-2
- Registry
- active, updated 2026-07-08 · registry entry
- Reachable
- 8 of the last 8 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| verify | 579 | 4 % |
| candidate_narrow | 452 | 3 % |
| shelf_signable | 416 | 3 % |
| kernel_gate | 375 | 3 % |
| candidate_commit | 368 | 3 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-09 11:10 | alive | 359 ms | 101 | 24k | 14k |
| 2026-10-07 11:03 | alive | 626 ms | 101 | 24k | 14k |
| 2026-10-05 13:28 | alive | 289 ms | 97 | 23k | 13k |
| 2026-10-05 00:18 | alive | 341 ms | 97 | 13k | |
| 2026-10-04 09:57 | alive | 825 ms | 97 | 13k | |
| 2026-10-04 07:51 | alive | 916 ms | 97 | 13k | |
| 2026-10-03 20:31 | alive | 517 ms | 97 | 13k | |
| 2026-10-03 17:49 | alive | 842 ms | 97 | 13k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/com.narrowhighway/concordance)
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.