
API Riddle Firewall and Vault System
Take control of your API Infrastructure
What it does
OnlyAllowAI sits inline between your AI agents and your LLM providers. Each request must pass a structured competency test — a Riddle. A drop-in firewall for AI traffic. Replace your existing LLM endpoint URL with an OnlyAllowAI URL — nothing else changes in your application code. Behind the scenes, every request is tested against a competency contract you defined; passing requests stream through with negligible latency, failing ones are blocked with structured per-field feedback.
Does the same job
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I built this out of curiosity about what Claude Code was actually sending to the API. Turns out, watching your tokens tick up in real-time is oddly satisfying. Sherlock sits between your LLM tools and the API, showing you every request with a live dashboard, and auto-saved copies of every prompt as markdown and json.
- OVOneCLI – Vault for AI Agents in RustMar 2026 · github.com · ▲161
We built OneCLI because AI agents are being given raw API keys. And it's going about as well as you'd expect. We figured the answer isn't "don't give agents access," it's "give them access without giving them secrets." OneCLI is an open-source gateway that sits between your AI agents and the services they call. You store your real credentials once in OneCLI's encrypted vault, and give your agents placeholder keys. When an agent makes an HTTP call through the proxy, OneCLI matches the request by host/path, verifies the agent should have access, swaps the placeholder for the real…
- ULUse LLMs to Interact with APIs2024 · github.com · ▲35
Recently featured in a LangChain blog https://blog.langchain.dev/empowering-development-with-flowt... , use LLMs to construct an API first runnable workflow with an IDE experience.
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