io.github.ianderso/tna-discovery-mcp
UK National Archives Discovery
Search the UK National Archives' Discovery catalogue; find Chelsea pensioners' papers in WO 97.
alive probed 2026-10-19
5tools
≈ 1.2ktokens, estimate
≈ 0.6 %of Claude's 200k window
0.9×the median server
3.1 sto initialize
6 msto list tools
- Run it
- uvx tna-discovery-mcp==0.1.0 (stdio, probed in a container with the network off)
- Host
- pypi.org
- Reports itself as
- tna-discovery-mcp 0.1.0
- Capabilities
- prompts, resources, tools
- Instructions
- 1 012 characters
- Of a 1M window
- ≈ 0.1 % of a 1M context window, estimate
- Claude count
- The count_tokens endpoint refused the tool schemas: invalid x-api-key. The estimate stands in.
- Repository
- https://github.com/ianderso/tna-discovery-mcp
- Registry
- active, updated 2026-10-11 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
Estimates with the o200k_base tokenizer.
| Tool | o200k estimate | Share of this server |
|---|---|---|
| search_records | 424 | 34 % |
| find_soldier | 337 | 27 % |
| get_record | 222 | 18 % |
| browse | 222 | 18 % |
| budget_status | 41 | 3 % |
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The Anthropic count_tokens endpoint refused the tool schemas (invalid x-api-key). A client that validates schemas can refuse them too.