Blockchair · Rate Limits

Blockchair Rate Limits

Blockchair enforces a daily call quota plus per-second and per-minute rate limits. Without a key, usage is capped at roughly 1440 requests per day (about one per minute on average) with a hard ceiling of 30 requests per minute. A soft limit of about 5 requests per second applies to both free and paid plans, enabled manually by admins only when servers are under very high load. Paid Enterprise plans raise the daily call budget. Each call also has an internal request-cost weighting, so heavier queries draw down the daily quota faster.

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

It captures 5 rate-limit definitions, measuring requests and request_units.

An exhausted limit returns HTTP 402.

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 3 backoff/retry policies defined and response codes documented for throttled.

Tagged areas include Blockchain, Cryptocurrency, Explorer, On-Chain Data, and Rate Limiting.

5 Limits Exhausted: HTTP 402
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.
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BlockchainCryptocurrencyExplorerOn-Chain DataRate LimitingQuotasThrottling

Limits

Daily Requests (no key) ip
requests
1440 per day
Personal/testing use without a key; about one request per minute on average.
Requests Per Minute (no key) ip
requests
30 per minute
Hard ceiling on the free, no-key tier.
Requests Per Second (soft) account
requests
~5 per second
Soft limit on both free and paid plans, enabled manually under very high server load.
Daily Calls (paid) account
requests
25000-100000 per day
Set by the selected Enterprise plan; custom plans can exceed this.
Request Cost account
request_units
weighted per call
Each response carries a request_cost in context; heavier queries consume more of the daily call budget than the nominal one-call-per-request.

Policies

Tiered Limits
Daily call budgets rise from the free tier through Enterprise and custom plans.
Load-Based Throttling
The ~5 rps soft limit is toggled by admins only during periods of very high server load.
Backoff Strategy
Clients should throttle to stay under per-minute limits and back off when throttled.

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

curl for this page
This rate limit 
curl "https://apis.io/api/v1/rate-limits/blockchair-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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