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, conforming to the API Commons Rate Limits specification.

It captures 1 rate-limit definition, measuring varies.

The profile also includes 1 backoff/retry policy defined.

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

1 Limits
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.

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

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