SignalWire · Rate Limits

Signalwire Rate Limits

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

It captures 10 rate-limit definitions.

Limit state is signalled in the documented, header_names_published, statement, and exhaustion_status response headers.

Tagged areas include Company, Communications, CPaaS, Voice, and Messaging.

10 Limits documentedheader_names_publishedstatementexhaustion_status
Transcribed from the provider's documentation on 2026-08-27 — signalwire.com/docs/platform/rate-limits.
View Source
CompanyCommunicationsCPaaSVoiceMessagingSMSVideoWebRTCSIPTelephonyFaxAI AgentsConversational AIContact Center

Limits

API writes per-account (all Projects in a Space)
· per 10 seconds
13800/10 seconds
API reads per-account (all Projects in a Space)
Documented as "effectively unlimited".
Outbound calls per-account
· per 1 second
1/1 second
Messaging — toll-free per-account
· per 1 second
3/1 second
Messaging — US long code (10DLC) per-account
· per 1 second
4/1 second
Actual throughput may be lower or higher depending on carrier and TCR (Campaign Registry) limits.
Messaging — Canadian long code per-account
· per 1 second
1/1 second
Messaging — short code per-account
· per 1 second
10/1 second
Voice backlog per-account
10000
When the backlog is full SignalWire stops adding calls to the Voice queue.
Messaging backlog per-account
10000
Separate from the Voice backlog.
Phone numbers per Project per-project
1000
Space limit, applies to Spaces not in Trial mode. Requests above 1000 require additional verification and auto top-up configured to the monthly cost of the numbers.

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

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