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.
Limits
Policies
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.
Call it yourself
curl for this page
curl "https://apis.io/api/v1/rate-limits/signal-rate-limits"curl "https://apis.io/api/v1/rate-limits?limit=25"Discovery needs no key. Ratings and market analysis are Pro.