Signal · Rate Limits

Signal Rate Limits

Signal does not publish a public rate-limits document for a commercial API surface. The Signal service applies abuse-mitigation throttling (e.g., on registration, message send, group operations) internally; thresholds are intentionally not published and may change without notice. There is no developer-facing rate-limit contract.

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

It captures 1 rate-limit definition, measuring varies.

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 1 backoff/retry policy defined.

Tagged areas include Messaging, Encryption, Privacy, and Rate Limiting.

1 Limits
Method: generated, dated 2026-05-05.
Written by API Evangelist on 2026-05-05 and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
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MessagingEncryptionPrivacyRate Limiting

Limits

Anti-abuse throttling client
varies
not publicly documented
Registration, send, and group operations may be throttled to mitigate spam/abuse; thresholds are not published.

Policies

Anti-Abuse, Not SLA
Signal's rate limits exist to protect end users from spam and abuse rather than to partition a billable API; clients must not rely on specific thresholds.

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.
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Call it yourself

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

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