Economic Research Service · Rate Limits

Economic Research Service Rate Limits

Published rate limits for the ERS ARMS Data API. ERS itself publishes no numbers; the limits are set and documented by api.data.gov (API Umbrella), the shared Federal API management service through which ERS issues and enforces keys. The ERS geospatial services on gisportal.ers.usda.gov are NOT behind api.data.gov, take no key, and publish no limits at all.

Economic Research Service Rate Limits is the machine-readable rate-limit profile for Economic Research Service on the APIs.io network, in the API Commons Rate Limits shape.

It captures 3 rate-limit definitions, across the registered-key and demo tiers, measuring requests_per_hour and requests_per_day.

Limit state is signalled in the limit, remaining, reset, and retryAfter response headers, and an exhausted limit returns HTTP 429.

The profile also includes 2 backoff/retry policies defined and response codes documented for throttled, quotaExceeded, and errorCode.

Tagged areas include Agriculture, Economics, Federal Government, Research, and Rate Limiting.

3 Limits Exhausted: HTTP 429 Quota: 429 limitremainingresetretryAfter
Transcribed from the provider's documentation on 2026-09-06 — api.data.gov/docs/developer-manual/ (Web Service Rate Lim....
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AgricultureEconomicsFederal GovernmentResearchRate LimitingQuotas

Limits

Default hourly limit per API key api-key
requests_per_hour · hour
1000/rolling
Applied across all api.data.gov requests made with that key, not per agency and not per endpoint - a key shared with another Federal API spends the same 1,000. api.data.gov states limits "may vary by service"; ERS publishes no ERS-specific override.
DEMO_KEY hourly limit ip-address
requests_per_hour · hour
30
DEMO_KEY daily limit ip-address
requests_per_day · day
50

Policies

Exhaustion behaviour
Exceeding the limit temporarily blocks the API key from further requests and returns HTTP 429 with error code OVER_RATE_LIMIT. The block lifts automatically as the rolling hour passes; there is no manual reset and no documented Retry-After value.
Higher limits
api.data.gov instructs consumers needing higher limits to contact the owning agency directly. For ARMS that is the ERS ARMS Team, listed on https://www.ers.usda.gov/developer/data-apis/arms-data-api. There is no self-service upgrade and no paid tier.

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

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Tools for rate limits

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  • 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.
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Call it yourself

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This rate limit 
curl "https://apis.io/api/v1/rate-limits/economic-research-service-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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