- If you send an API key, every key in your organization shares the organization’s per-second limit.
- An API key removes the hourly request cap. The per-second limit still applies.
- Some plans have higher per-second limits. See Search API pricing.
- Without a key, you share the per-IP pool with all other traffic from your IP address, so that traffic reduces your headroom.
- On the pay-per-request paths, the per-IP limit counts both the unpaid request that returns the offer and the paid retry. That’s why it’s twice the per-wallet limit.
Parallel calls
Searches and fetches count against the same limit. If you send calls in parallel, keep each batch under your per-second limit, and wait for a429’s Retry-After before you retry. The MCP server tells agents to send at most 5 calls at once.
When you hit a limit
Going over a limit returns429 with a Retry-After header. The body’s code says which limit you hit:
The body also has a
limit object with the limit’s scope, window, max and resets_at, and retry_after_seconds, which matches Retry-After. Wait that long, then retry. A keyless hourly 429 keeps coming back until resets_at. To continue sooner, send an API key. See 429 Rate limit exceeded for the rate-limit headers, the SDK errors and the 429s that aren’t your limit.
Rate limits cap how fast you can call the API. Credits cap how much: authenticated usage draws on a free allowance of 100,000 requests a month. See credits.