PhantomAPI builds developer tools for the things that go wrong between services. APIs that change without telling you. Agents that hold keys they shouldn't. We watch the wire so your team doesn't have to.
Both products attach without code changes and run alongside what you're already shipping. Pick the one that matches the problem in front of you — or use both.
Attach to any Linux process and DeltaWatch watches its HTTP traffic at the kernel level via eBPF. Learns the shape of every endpoint, flags missing fields, type changes, and new fields the moment they show up.
Explore DeltaWatch → BetaPlato sits between your AI agents and the LLM providers. Issue scoped tokens with model allowlists, spend caps, and TTLs. Every request is policy-checked in real time. Revoke any token in two clicks.
Explore Plato →Most failures in modern systems aren't in your code. They happen at the boundaries — the moment data leaves one service and shows up at another. We build for those boundaries.
You shouldn't have to redeploy to see what's going on between your services. PhantomAPI's tools attach to running processes — no instrumentation, no proxy in the hot path, no SDK upgrade.
Whether it's a third-party API silently changing its schema or an AI agent holding a credential it should never have seen, the right answer is the same: put a checkpoint on the wire and make the boundary explicit.
A logs-and-dashboards postmortem after the incident is too late. DeltaWatch flags drift the first time it appears in a response. Plato stops a runaway agent at the policy boundary, not when your monthly invoice arrives.
Each product does exactly one job. They share a security model, a dashboard, and a billing relationship — but you can adopt them independently and skip the parts you don't need.