Singularity · Rate Limits

Singularity Energy Rate Limits

The Singularity Grid Carbon API authenticates requests with an X-Api-Key header (a User-Agent header is also required) and paginates region-event searches via page / per_page parameters. Singularity does not publish specific numeric request-per-minute or per-day rate limits in its public documentation; quotas are governed by the per-region subscription and negotiated commercial terms. Specific throttling values are not reconciled in this artifact.

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

It captures 3 rate-limit definitions, measuring requests, regions, and records.

An exhausted limit returns HTTP 429.

This profile was written by API Evangelist and has not been verified against a page the provider published; treat every limit as unconfirmed until a dated transcription replaces it.

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

Tagged areas include Energy, Carbon Emissions, Grid, Sustainability, and Carbon Intensity.

3 Limits Exhausted: HTTP 429
Method: generated, dated 2026-06-21.
Written by API Evangelist on 2026-06-21 and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
View Source
EnergyCarbon EmissionsGridSustainabilityCarbon IntensityRate LimitingQuotasThrottling

Limits

Request Quota account
requests
see provider documentation
No public per-minute or per-day request quota is documented; governed by subscription terms.
Region Subscription Scope account
regions
per subscribed regions
Data access is limited to the regions included in the account's per-region subscription.
Pagination request
records
page / per_page
Region-event search results are paginated via the page and per_page query parameters.

Policies

Data Lag
Carbon intensity and fuel mix lag roughly 1 hour for major ISOs and up to 24 hours for non-real-time balancing authorities.
Backoff Strategy
Clients should implement exponential backoff with jitter and honor Retry-After on HTTP 429 responses.

Sources

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

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.
All 92 tools →

Call it yourself

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This rate limit 
curl "https://apis.io/api/v1/rate-limits/singularity-energy-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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