Tamp Token Compression Proxy Reduces Anthropic API Costs by 5–50%
Key Takeaways
- ▸Tamp reduces input token consumption by 5–50% through local compression of tool_result blocks before API calls
- ▸The proxy operates as a drop-in middleware requiring only OpenClaw provider configuration changes
- ▸Security best practices include running the proxy locally only, auditing the npm package source, and monitoring logs to prevent API key exposure
Summary
A new open-source tool called Tamp has been released as a local HTTP proxy that compresses tool_result blocks before they reach Anthropic's API, potentially saving users 5–50% on input token costs. The proxy integrates with OpenClaw and works by locally compressing API requests before forwarding them to Anthropic, reducing the number of tokens billed while maintaining full functionality. The implementation is designed as a transparent proxy that sits between the client and Anthropic's API, requiring minimal configuration beyond pointing OpenClaw's provider settings through the local Tamp instance.
The tool is distributed via npm and can be installed as a pinned package (@sliday/[email protected]) or built from source. Security audits recommend reviewing the npm package before production use and ensuring the proxy runs only on localhost to prevent API key exposure, as the proxy observes request headers in transit. The solution addresses growing concerns about API costs for applications making heavy use of tool calls and function returns.
Editorial Opinion
While Tamp offers meaningful cost savings for Anthropic API users, the security model requires careful deployment discipline. The proxy's visibility into unencrypted API keys in transit makes it a sensitive component that demands local-only operation and code inspection before production use. For teams already optimizing token usage, this tool represents a pragmatic intermediate solution, though long-term savings would ideally come from improvements in API efficiency at the platform level.
