Nar Rate Limits
NAR publishes no rate-limit documentation for the M1 Gateway External API - neither the Swagger 2.0 document nor the Postman collection mentions throttling, and no 429 response is declared anywhere. The gateway nevertheless advertises a live rate-limit budget in response headers on every request, including unauthenticated 401s, which is where these values come from. The header set is the ASP.NET Core AspNetCoreRateLimit convention: X-Rate-Limit-Limit carries the window ("600s"), X-Rate-Limit-Remaining the calls left in it, and X-Rate-Limit-Reset the ISO-8601 instant the window rolls. Observed twice on 2026-07-26 with a remaining count of 5999 against a 600-second window, implying a 6,000-request budget per 10 minutes on the unauthenticated path; the authenticated per-partner budget is not observable without NAR-issued credentials.
Nar Rate Limits is the machine-readable rate-limit profile for National Association of REALTORS on the APIs.io network, in the API Commons Rate Limits shape.
It captures 1 rate-limit definition, measuring requests_per_window.
Limit state is signalled in the limit, remaining, and reset response headers.
The profile also includes response codes documented for throttled and note.
Tagged areas include Real Estate, United States, Industry Body, MLS, and RESO.
limitremainingreset
Limits
Sources
Work with this as data
Every rate limit here is available over the APIs.io API and to AI agents over MCP.