Download the completion certificate

GET https://api.craftkit.dev/v1/signatures/:id/certificate

Streams the completion certificate (the signing audit-trail PDF). Like the signed document, the certificate is a sensitive legal artifact, so it is served only through the authenticated API — Craftkit fetches it server-side and streams the bytes back, so no provider-hosted link is ever exposed. Returns 409 until the certificate is available (until certificateUrl is non-null on the request).

Authorization

string

required

Bearer ck_live_… — a project API key.

Path parameters

string

required

The signature request id (UUID).

Response

On success, the certificate PDF bytes with Content-Type: application/pdf, served as an attachment named <id>-certificate.pdf.

application/pdf

The completion certificate PDF stream.

Errors

Status	code	Meaning
401	`unauthorized`	Missing/invalid/revoked key.
404	`not_found`	No such signature request in this key’s project.
409	`conflict`	Certificate is not available yet — poll status until `certificateUrl` is set.
502	`upstream_error`	The completion certificate could not be retrieved from the signature service.

cURL

curl https://api.craftkit.dev/v1/signatures/$SIGNATURE_ID/certificate \
  -H "Authorization: Bearer $CRAFTKIT_API_KEY" \
  -o certificate.pdf

409

{
  "error": {
    "code": "conflict",
    "message": "Completion certificate is not available yet (status: sent)."
  }
}

Projects

Templates

Renders

Signatures

Webhooks

Embed

Reference

Projects

Templates

Renders

Signatures

Webhooks

Embed

Admin

System

Download the completion certificate

Authorization

Path parameters

Response

Errors

​Authorization

​Path parameters

​Response

​Errors

Authorization

Path parameters

Response

Errors