generated: '2026-08-14'
method: searched
source: https://help.coefficient.io/hc/en-us/articles/39016042240795-Webhooks
spec_type: null
name: Coefficient webhook surface
notes: >-
  READ THE DIRECTION BEFORE SCORING THIS. Coefficient publishes a webhook surface,
  but it is INBOUND-ONLY: Coefficient issues a per-import Webhook URL that an
  EXTERNAL system (Salesforce, HubSpot, Zapier, anything that can make an HTTP
  call) hits to trigger an immediate refresh of that import in the spreadsheet.
  Coefficient does NOT emit outbound event notifications to subscriber endpoints,
  publishes no event catalog, no event payload schemas, no signing/verification
  scheme, and no AsyncAPI document. So this is a real, documented, provider-served
  HTTP trigger endpoint — the only programmatic surface Coefficient exposes — but
  it is not an event-notification surface and should not be read as one.
  No AsyncAPI exists to harvest; none was fabricated.
direction: inbound
delivery: caller-initiated HTTP trigger
asyncapi_document: null
event_catalog_published: false
event_schemas_published: false
signing:
  documented: false
  note: >-
    No HMAC signature, no shared secret header, and no IP allowlist are documented.
    Authorization is by possession of the opaque Webhook URL alone (bearer-URL).
availability:
  plans: [Pro, Enterprise]
  trial: true
  note: >-
    "Webhooks are available during your Free Trial, as well as on our Pro and
    Enterprise plans."
endpoints:
- id: refresh-single-import
  label: Refresh this import only
  direction: inbound
  description: >-
    Allows data refresh of the selected import. The URL is copied from the
    Coefficient sidebar: open the import, click the 3-vertical-dot menu, select
    "Webhook URL", then choose "Refresh this import only".
  url_pattern: null
  url_pattern_note: >-
    Coefficient does not publish the webhook URL host or path template — the URL
    is generated per import inside the product UI and is not documented anywhere
    public. Nothing was guessed.
  source: https://help.coefficient.io/hc/en-us/articles/39016042240795-Webhooks
- id: refresh-all-imports-in-sheet
  label: Refresh all imports in the sheet
  direction: inbound
  description: >-
    Allows data refresh of all imports on the spreadsheet, from a single trigger URL.
  url_pattern: null
  source: https://help.coefficient.io/hc/en-us/articles/39016042240795-Webhooks
observability:
  run_history: >-
    Webhook invocations appear in the import's "View Run History" dashboard view.
    A webhook that FAILS does not trigger a refresh and does NOT appear in the run
    history — so failed triggers are invisible to the operator.
rate_limits:
  see: rate-limits/coefficient-works-rate-limits.yml
  summary: 12 webhook calls per hour, minimum 5 minutes between triggers (Pro/Enterprise)
x-evidence:
- url: https://help.coefficient.io/api/v2/help_center/en-us/articles/39016042240795.json
  http_status: 200
  fetched: '2026-08-14'