Prometheus · Rate Limits

Prometheus Rate Limits

Prometheus is self-hosted; there is no upstream rate-limit policy. Throughput is bounded by the operator's deployment — scrape interval, retention, query concurrency, remote-write throughput — all tunable via the Prometheus configuration file and command-line flags.

Prometheus Rate Limits is the machine-readable rate-limit profile for Prometheus on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 2 rate-limit definitions, measuring concurrent_requests and varies.

The profile also includes 2 backoff/retry policies defined.

Tagged areas include Observability, Monitoring, Open Source, and Rate Limiting.

2 Limits
ObservabilityMonitoringOpen SourceRate Limiting

Limits

Operator-tuned query concurrency instance
concurrent_requests
configured via --query.max-concurrency (default 20)
Operator-tuned scrape interval instance
varies
configured via global.scrape_interval

Policies

Self-Hosted
All throughput and concurrency limits are owned by the operator running the binary; there is no upstream throttler, no API key, and no per-tenant quota.
Remote-Write Backpressure
When using remote_write, Prometheus enforces queue-based backpressure governed by the `queue_config` block (capacity, max_samples_per_send, max_shards) — not a vendor-side rate limit.

Sources

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.
All 92 tools →

Call it yourself

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

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