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Pre-1.0 · one maintainer · Stripe and cards only · no SDKs (client libraries) yet · no production users yet. Docs describe v0.9.1 (29 Oct 2026) · What’s new →

Email the credit-note document (PDF attached)

POST
/v1/credit-notes/{id}/send
curl --request POST \
--url http://localhost:8080/v1/credit-notes/example/send \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{ "email": "hello@example.com", "additional_emails": [ "example" ] }'

Sends the credit-note PDF to the customer (ADR-082 rider — CNs previously had no send surface at all). Issued credit notes only: drafts and voided CNs return 422. Recipient contract matches the invoice send (email + tri-state additional_emails). The send is recorded on the applied invoice’s timeline and the customer’s Sent-emails section.

id
required
string
Idempotency-Key
string

Makes the call safe to retry. Send a unique value (a UUID works) and the same value on every retry. For 24 hours, a repeat with the same key, method, path and body gets the first response again, with an Idempotent-Replayed: true header, instead of running again. The error cases are in docs/api-surface.md. The usage routes do not take it: each usage event carries its own idempotency_key.

Media typeapplication/json
object
email
required
string format: email
additional_emails
Array<string>
<= 10 items

Example generated

{
"email": "hello@example.com",
"additional_emails": [
"example"
]
}

Email enqueued

Media typeapplication/json
object
status
required
string
Allowed values: sent

Example

{
"status": "sent"
}

Credit note not found

Nothing was sent. email_not_configured: this server has no SMTP set up.

Media typeapplication/json
object
error
object
type

One of invalid_request_error, authentication_error, rate_limit_error or api_error. Every error the API answers has this shape, including an unknown path (404, code route_not_found) and a method the path does not take (405, code method_not_allowed, with an Allow header). The few exceptions are listed in docs/api-surface.md.

string
code
string
message
string
request_id
string
param

The request field the error is about. Sent only when the error names one. A request body may hold only the fields its operation lists, spelled and cased as listed: any other field, or one the server sets (such as id), is refused with 422 and param naming it. An operation with no request body lists no fields: send no body, {} or null. The Stripe and Postmark webhooks and the LiteLLM callback take their sender’s body as it comes.

string

Example

{
"error": {
"type": "invalid_request_error"
}
}

Not issued (draft/voided), email is missing or invalid, or the body has an unknown field (param names it)