Get message delivery attempts

GET

/v1/messages/{id}/attempts

• Production

Retrieve all delivery attempts for a specific message, including timing breakdown, response details, and connection metadata. Useful for debugging delivery failures.

Response body URLs are only available on Starter plans and above.

Note: If the message ID does not exist or belongs to a different project, this endpoint returns 200 with an empty data array (not 404). Use GET /v1/messages/{id} first to verify the message exists.

Note: Results are capped at 200 attempts. If has_more is true in the response, additional attempts exist but cannot be retrieved yet. Cursor-based pagination will be added in a future release.

Authorizations

• BearerAuth

Parameters

Path Parameters

id

required

string format: uuid

Unique message identifier (UUIDv7)

Example

01935abc-def0-7123-4567-890abcdef012

Responses

200

Attempts retrieved successfully. Returns an empty array if the message has no attempts yet or if the message ID is not found.

object

data

required

Array<object>

A single delivery attempt for a webhook message

object

id

required

Unique attempt identifier (UUIDv7)

string format: uuid

Example

01935abc-def0-7123-4567-890abcdef001

attempt_no

required

Attempt number (1-based)

integer

Example

1

response_status

HTTP status code from the endpoint

integer

Example

200

response_latency_ms

Response latency in milliseconds

integer

Example

245

processing_ms

Total processing time in milliseconds (outbound attempts only; not populated for inbound attempts)

integer

nullable

Example

280

error_text

Error message if the attempt failed

string

Example

connection timeout

response_headers

Response headers from the endpoint

object

key

additional properties

string

retry_type

Type of retry scheduling applied

string

Example

slow

retry_after_seconds

Seconds until next retry was scheduled

integer

Example

1800

resolved_ip

IP address the endpoint hostname resolved to

string

Example

203.0.113.42

request_headers

Request headers sent to the endpoint

object

key

additional properties

string

dns_ms

DNS resolution time in milliseconds

integer

Example

12

tcp_connect_ms

TCP connection time in milliseconds

integer

Example

25

tls_handshake_ms

TLS handshake time in milliseconds

integer

Example

45

ttfb_ms

Time to first byte in milliseconds

integer

Example

200

transfer_ms

Response transfer time in milliseconds

integer

Example

8

conn_reused

Whether the TCP connection was reused

boolean

response_body_url

Presigned URL to download the response body (Starter+ plans only, expires in 15 minutes)

string format: uri

response_body_truncated

Whether the stored response body was truncated. Only present in the response when true; absence means the body was not truncated.

boolean

created_at

required

When the attempt was made

string format: date-time

Example

2025-12-06T12:00:00Z

meta

required

object

request_id

Unique identifier for this request (useful for support)

string

Example

req_xyz123

has_more

required

Whether more attempts exist beyond the returned set

boolean

Example

{
  "data": [
    {
      "id": "01935abc-def0-7123-4567-890abcdef001",
      "attempt_no": 1,
      "response_status": 500,
      "response_latency_ms": 245,
      "error_text": "HTTP 500 Internal Server Error",
      "retry_type": "slow",
      "retry_after_seconds": 1800,
      "dns_ms": 12,
      "tcp_connect_ms": 25,
      "tls_handshake_ms": 45,
      "ttfb_ms": 200,
      "transfer_ms": 8,
      "conn_reused": false,
      "created_at": "2025-12-06T12:00:00Z"
    },
    {
      "id": "01935abc-def0-7123-4567-890abcdef002",
      "attempt_no": 2,
      "response_status": 200,
      "response_latency_ms": 120,
      "dns_ms": 0,
      "tcp_connect_ms": 0,
      "tls_handshake_ms": 0,
      "ttfb_ms": 115,
      "transfer_ms": 5,
      "conn_reused": true,
      "created_at": "2025-12-06T12:30:00Z"
    }
  ],
  "meta": {
    "request_id": "req_xyz123",
    "has_more": false
  }
}

400

Invalid request

object

error

object

code

Machine-readable error code

string

Example

INVALID_REQUEST

message

Human-readable error message

string

Example

endpoint must be a valid HTTPS URL

meta

object

request_id

Unique identifier for this request (useful for support)

string

Example

req_xyz123

Examples

Endpoint not found

{
  "error": {
    "code": "ENDPOINT_NOT_FOUND",
    "message": "endpoint not found"
  },
  "meta": {
    "request_id": "req_xyz123"
  }
}

Invalid endpoint ID format

{
  "error": {
    "code": "INVALID_REQUEST",
    "message": "endpoint_id must be in format ep_xxx"
  },
  "meta": {
    "request_id": "req_xyz123"
  }
}

Invalid payload

{
  "error": {
    "code": "INVALID_REQUEST",
    "message": "payload must be valid JSON"
  },
  "meta": {
    "request_id": "req_xyz123"
  }
}

Invalid headers

{
  "error": {
    "code": "INVALID_HEADERS",
    "message": "header 'Host' is forbidden and cannot be overridden"
  },
  "meta": {
    "request_id": "req_xyz123"
  }
}

401

Unauthorized - Invalid or missing API key

object

error

object

code

Machine-readable error code

string

Example

INVALID_REQUEST

message

Human-readable error message

string

Example

endpoint must be a valid HTTPS URL

meta

object

request_id

Unique identifier for this request (useful for support)

string

Example

req_xyz123

Example

{
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Invalid or missing API key"
  },
  "meta": {
    "request_id": "req_xyz123"
  }
}

500

Internal server error

object

error

object

code

Machine-readable error code

string

Example

INVALID_REQUEST

message

Human-readable error message

string

Example

endpoint must be a valid HTTPS URL

meta

object

request_id

Unique identifier for this request (useful for support)

string

Example

req_xyz123

Example

{
  "error": {
    "code": "INTERNAL_ERROR",
    "message": "An internal error occurred"
  },
  "meta": {
    "request_id": "req_xyz123"
  }
}