io.github.halowerk/halowerk-mcp
halowerk
134 paid APIs as MCP tools, billed per call in USDC on Base. No account, no login.
alive probed 2026-10-19
14tools
≈ 5.7ktokens, estimate
≈ 2.8 %of Claude's 200k window
4.0×the median server
601 msto initialize
12 msto list tools
- Run it
- npx -y halowerk-mcp@0.1.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- halowerk 0.1.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- ≈ 0.6 % 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/halowerk/halowerk-mcp
- Registry
- active, updated 2026-08-12 · 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 |
|---|---|---|
| doc_diff | 635 | 11 % |
| invoice_audit | 508 | 9 % |
| jwt_verify | 487 | 9 % |
| webhook_signature | 487 | 9 % |
| cost_estimate | 460 | 8 % |
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.