Labs dominicreichl.com

Under Validation

Halve Your Claude Code & Agentic LLM Token Bill Automatically.

An intelligent, local-first proxy that optimizes Model Context Protocol (MCP) tool schemas and prunes AST contexts to guarantee Anthropic prompt cache hits on every agent turn.

Request Early AccessSee how it works

Concept validation only. No payment, no commitment, no recurring newsletter.

Local-first directionPortable outputsBuilt around a specific workflowEarly access is free

Proposed workflow

Smart caching, kept entirely local.

We believe that prompt caching shouldn't sacrifice your code privacy or require complex client-side setups.

01

On-Device MCP & AST Pruning

Strips unused tool definitions and transmits only modified AST segments rather than whole-file dumps.

02

Prompt Variable Stabilization

Enforces strict payload ordering and format consistency to guarantee subsequent requests trigger Anthropic's prompt cache.

03

100% Private Local Proxy

Runs entirely on localhost as a background service. Your proprietary source code never touches third-party servers.

The honest status

This is a product decision, not a finished product.

The concept is being validated before development time is committed. Joining tells us the problem is relevant to you and gives you first access if the evidence supports a build.

  • You will not be charged.
  • Your email is only used for this experiment.
  • You can leave the list at any time.

Before you decide

Questions, answered clearly.

The current scope, privacy model, and next step without launch-day promises.

Does it support Claude Code natively?

Yes. Cache Shield is configured as a localhost proxy (e.g. localhost:8000) that intercepts standard terminal agent outgoing HTTP requests.

What are the direct token savings?

Empirical testing shows that by stabilizing environment parameters and stripping inactive tool schemas, prompt cache hit rates increase from an unstable 20% up to 90%, yielding over 50% overall API cost reductions.

Does this guarantee the intended outcome?

No. The concept should state its limits clearly and preserve human review wherever judgment is required.

What happens when I request access?

Your email is recorded for this experiment only. You receive one relevant update or beta invitation if the concept moves forward.

Early access

Ready to optimize your agent billing?

Request early beta access and lock in the €49 lifetime license (50% off standard launch price).