API & Webhooks
Your CRM data, open to build on
A clean REST API and signed webhooks let you read and write contacts, deals, and custom objects, and react to events the moment they happen. Build the integrations your team actually needs.
A REST API you can read
Predictable, JSON-based endpoints for contacts, deals, and custom objects. Standard verbs, clear responses, and pagination that behaves the way you'd expect, so you spend time building, not guessing.
React the moment it happens
Subscribe to events and KudosCRM pushes them to your endpoint in real time. No polling, no cron jobs, no stale data, just a clean POST when a contact, deal, or form changes.
Signed and verifiable
Every webhook is HMAC-signed so your receiver can prove the request really came from KudosCRM. Secrets stay per-account, and signatures cover the exact bytes we send.
How it works
Every part, explained.
Create your API credentials
Generate a key scoped to your account. It authenticates every API call so only your systems can read and write your data.
Read and write your records
Call REST endpoints for contacts, deals, and custom objects. Fetch a record, create one, update fields, or page through a list, all with consistent JSON in and JSON out.
Subscribe to the events you care about
Point a webhook at your endpoint and choose which events to receive, like a new contact, a deal stage change, or a form submission.
Receive a signed payload
When an event fires, KudosCRM POSTs a JSON payload to your URL with an HMAC signature header so you can verify it before acting on it.
Verify, then act
Check the signature against your secret, parse the payload, and run your logic, sync to another tool, kick off a job, or update a dashboard.
Trust the retries
Transient network failures are retried with backoff, and delivery is logged so you can see exactly what was sent and where it landed.
Deep dive
Everything that's in the box.
Contacts endpoints
Read, create, and update contacts and their core fields through clean REST routes built for everyday integration work.
Deals endpoints
Pull pipeline data, create deals, and move them through stages from your own code, keeping revenue tools in sync.
Custom objects
Your custom objects are first-class in the API too, so the data unique to your business is just as accessible as the built-ins.
Event webhooks
Subscribe to record and form events and receive a JSON POST the instant something changes, no polling required.
HMAC-signed payloads
Each webhook carries an HMAC signature over the exact payload bytes, so your receiver can confirm authenticity before it acts.
Automatic retries with backoff
Network timeouts and dropped connections are retried with polynomial backoff, so a brief blip doesn't lose an event.
Per-account secrets
Signing secrets are scoped to your account and generated on demand, keeping the blast radius small if one is ever rotated.
Consistent JSON shape
Requests and responses follow a stable, documented structure, so your client code keeps working as the product grows.
KudosCRM vs. the old way
A different league.
Keep exploring
Related features.
Works with your integrations
Connect the tools that power this in KudosCRM.
FAQ
Frequently asked
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