The activation-limited API key proxy that gives AI agents exactly the access they need — and nothing more.
When you hand an AI agent an API key, you're giving it unlimited, indefinite access. One bad loop, one hallucinated retry, one prompt injection — and your bill spirals while the agent burns through your quota.
"We woke up to a $47,000 OpenAI invoice. The agent ran overnight."
A proxy that wraps any upstream API key with hard limits — by activations, tokens, or dollars — and stops the moment any limit is hit. No configuration. No dashboards to watch. Just a key that works till it doesn't.
Till sits between your AI agent and the upstream provider. You create a scoped key with hard limits. The agent uses it like any normal API key. When the limit is reached, the key is done.
Your real API key is AES-256-GCM encrypted into the scoped token itself
Every call updates activation, token, and spend counters instantly
Whichever limit hits first kills the key — no grace period, no overrun
Whichever limit triggers first exhausts the key. Simple, predictable, impossible to overrun.
Cap the total number of API calls. Perfect for task-scoped agents that should complete in N steps.
Limit total input + output tokens. Ideal for controlling context-heavy workloads and long conversations.
Set a hard spend ceiling. Built-in pricing for 80+ models means accurate cost tracking per call.
Till never stores your real API key. It's AES-256-GCM encrypted and embedded directly inside the scoped token. If someone breaches the database, they get counters — not keys.
AES-256-GCM encryption — military-grade symmetric cipher with authentication
Key-in-token architecture — the scoped key IS the encrypted upstream key
Database stores only metadata — activation counters, limits, and status flags
Revoke instantly — mark a key as revoked and it's dead, no propagation delay
Twelve providers, 80+ models, one unified proxy layer. Switch providers without changing your integration.
Built-in pricing tables for 80+ models — accurate spend tracking out of the box
No credit card required. Upgrade as your agent fleet grows.
Perfect for prototyping and solo agent projects.
For teams shipping agents to production.
For organizations with large agent deployments.