AI Circuit Breaker
AI Circuit Breaker proxies OpenAI-compatible agent requests, detects repeated request loops, and enforces spend caps before forwarding traffic. Developers running agents use it to limit runaway API usage.
One of 147 tools in Developer Tools
Who it's for
- AI agent developers who want repeated requests checked before they reach the upstream API.
- Teams using the OpenAI SDK that want to route requests through a proxy without changing SDKs.
- Teams that need hourly or daily spend caps for agent API traffic.
How it fits your workflow
Configure an agent client to use the Circuit Breaker proxy base URL and provide its proxy key. The page shows a Python OpenAI SDK example and says the SDK can be kept while changing the base URL.
Requests pass through RAM-based prompt hashing and spend-cap checks before being forwarded to the upstream OpenAI API. Repeated requests can be blocked, and requests over a budget cap can receive a 429 response.
Pricing
Free: The page offers a free proxy key. It does not state the price or limits of any paid plans.
The vendor doesn't publish prices. Check with AI Circuit Breaker directly.
Prices checked on Oct 7, 2026 from the vendor's site. They can change; confirm before you buy.
Key features
- Repeated-request loop detection
- Uses prompt fingerprints and a repeat threshold to identify recurring requests. The illustrative scenario says a repeated prompt is detected at attempt three and the loop is halted.
- Hourly and daily spend caps
- Checks requests against configured hourly and daily account caps before sending them upstream. The page illustrates a blocked-budget response with HTTP 429.
- OpenAI-compatible proxy endpoint
- Routes agent traffic through a proxy, with a client example that changes the OpenAI SDK base URL while keeping the SDK.
- Volatile-memory inspection
- The request path uses RAM-based hashing and cap checks; the page states that prompt payloads are not persisted and prompt disk writes are zero.
- HTTP/2 and SSE
- The gateway page identifies HTTP/2 and server-sent event support for proxy traffic.
Works with
- OpenAI SDK
- OpenAI API
Limitations to know
- The page describes the service for OpenAI-compatible agent traffic and shows OpenAI as the upstream provider; it does not specify support for other upstream providers.
- Performance figures are stated as engineering targets and are said to depend on deployment, network conditions, and request profile.
- The page does not provide specific plan prices or account cap configuration details.
Getting started
- Get a free proxy key from the page.
- Set the OpenAI SDK base URL to the Circuit Breaker endpoint shown in the client configuration example.
- Send agent requests through the proxy and configure hourly or daily spend caps.