RadarSend · API reference
Everything the API can do.
Tenant-facing HTTP API for contacts, sending, automation and reporting.
v1.0.0 · 91 endpoints https://api.sonarsend.com Auth · X-API-Key
Getting started
Authentication API keys, the sonar_ format, and the X-API-Key header. Scopes & access planning Choosing the narrowest scope set for an integration. Errors & rate limits The error envelope, common codes, and rate-limit headers. Lists & pagination The one shape every list endpoint returns, and how to page through it. Versioning & compatibility What can change without warning, what cannot, and how a breaking change would reach you. Changelog Every change to the API surface, newest first.
Contacts & audience
Contacts Create, upsert, search, bulk-update and export contacts. Custom fields Read the typed schema contact values live in. Events Recording custom events from your backend. Lists & segments Static lists and dynamic segments, and their membership. Suppression Hard-blocking an address, and how it differs from unsubscribing.
Sending
Sending setup Sending identities, domains and providers. Reference data Email types, sending identities, segments and templates by public key. Broadcasts Draft, schedule and control a one-off send. Email library Reusable emails with immutable version history. Template mode Parameters, sections, slots and blocks for dynamic content. Template import/export Round-trip templates and blocks as markdown. Sequences Discover automated flows and enrol contacts into them.