Walnut Rate Limits
Walnut publishes explicit per-key rate limits for the Customer Data API: 50 requests/second sustained, 100 requests/second burst, and a row cap per request. Exhaustion returns 429 and the only remediation guidance is exponential backoff. What Walnut does NOT publish is any runtime signal — no RateLimit-*, no X-RateLimit-*, and no Retry-After — so a client has to infer its position against the limit from the numbers in the docs rather than read it off the response. The row cap is stated inconsistently across two Walnut pages and that conflict is recorded, not resolved.
Walnut Rate Limits is the machine-readable rate-limit profile for Walnut on the APIs.io network, conforming to the API Commons Rate Limits specification.
It captures 3 rate-limit definitions.
Tagged areas include Sales Demo, Interactive Demos, Product Demos, Sales Enablement, and Demo Analytics.
Work with this as data
Every rate limit here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for rate limits
4 MCP tools reach this
find_rate_limitsBrowse and filter every rate limit in the catalog.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
curl "https://apis.io/api/v1/rate-limits/walnut-rate-limits"curl "https://apis.io/api/v1/rate-limits?limit=25"Discovery needs no key. Ratings and market analysis are Pro.