Authenticate the caller
Resolve a workspace-scoped API key before spending upstream network resources.
API rate limit proxy
Put a bounded traffic layer between your app and upstream APIs
ThrottleProxy authenticates workspace traffic, approves the destination, applies shared limits, queues eligible bursts, strips proxy credentials, and returns the upstream response within explicit resource boundaries.
Workspace keysApproved hostsBounded queuesSafe forwarding
Core responsibilities
Rate limiting is only one part of a safe proxy path
A useful protection layer also needs tenant scope, destination policy, bounded resource use, credential separation, and privacy-safe operational evidence.
Constrain destinations
Permit only approved public host patterns while rejecting unsafe protocols, ports, and private targets.
Enforce shared limits
Apply Redis-backed rate and concurrency decisions consistently across workers.
Queue bounded bursts
Hold eligible requests briefly within explicit per-target, key, workspace, and global caps.
Separate credentials
Use the ThrottleProxy key only for proxy authentication and strip it before upstream forwarding.
Preserve safe evidence
Keep status, stage, timing, and correlation context without storing raw secrets or request bodies.
Common questions
What is an API rate limit proxy?
It is a controlled network layer between an application and approved upstream APIs. It authenticates callers and applies traffic policy before forwarding a request.
Does a proxy replace an upstream provider limit?
No. It helps shape and bound your traffic, but the upstream provider remains authoritative and may enforce additional account, model, endpoint, or time-window limits.
Should proxy credentials be forwarded upstream?
No. ThrottleProxy credentials authenticate the caller to the proxy and are stripped before the outbound request. Provider credentials require a separate explicit mechanism.
Can ThrottleProxy target arbitrary hosts?
No. Destinations must match approved host patterns and pass protocol, port, DNS, private-range, metadata, and self-target safety checks.
Evaluate with one narrow integration
Start with one workspace, one application key, one exact public upstream host, and non-sensitive traffic.