> ## Documentation Index
> Fetch the complete documentation index at: https://commet.co/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# credits.expired

> Unused plan credits expired at the period reset.

## When this fires

Plan credits expire at the end of each billing period: the period reset discards whatever remained and grants the new period's credits (which fires `credits.granted`). This event reports the discarded amount. Purchased credits never expire and are not affected.

It only fires when there was something to discard — a customer who used all plan credits gets no `credits.expired`.

Use it for end-of-period usage summaries ("you left 120 credits on the table").


## OpenAPI

````yaml /openapi/en/webhooks/2026-08-27.json webhook credits.expired
openapi: 3.1.0
info:
  title: Commet Webhooks
  version: '2026-08-27'
  description: >-
    Outbound webhook events emitted by the Commet API. Each event is delivered
    as a signed POST to your configured endpoints.
servers: []
security: []
paths: {}

````

This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.