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

# Inbound AS2 endpoint: receives an EDI document over AS2 and returns a

> synchronous MDN receipt. Unauthenticated by transport design — AS2 partners are identified by their AS2-From/AS2-To headers (and, once the Security seam lands,…

synchronous MDN receipt.

Unauthenticated by transport design — AS2 partners are identified by their
`AS2-From`/`AS2-To` headers (and, once the `Security` seam lands, by their
S/MIME signature), not by our bearer token. Per AS2 semantics the MDN is
returned with HTTP 200 even when the EDI is rejected; the *disposition*
inside the MDN carries the accept/reject verdict. Only transport-level
failures produce a non-200.

### Response

No response body. MDN receipt (multipart/report).

### Status codes

| Code  | Meaning                        |
| ----- | ------------------------------ |
| `200` | MDN receipt (multipart/report) |

<RequestExample>
  ```bash cURL theme={null}
  curl --request POST \
    --url 'https://edi.stateset.com/v1/as2' \
    --header 'Authorization: Bearer YOUR_API_KEY'
  ```
</RequestExample>