Request file signatures — Brigg developers

Access & visibility

Allow signing.RequestFileSignatures on your API key.

Workspace access by default. Private member data requires approved member delegation through Brigg-Act-As; the key supplies permissions while private ownership and project boundaries remain enforced.

Set up authentication · Choose permissions

Request fields

Send a JSON object with the following fields. Required fields must be included; omit optional fields you do not need.

file_idstringRequired

Use a file_id returned by this listing or by CompleteUpload. It is not an upload ID, storage path or filename. documents.ListDocuments.

At least 1 character.

titlestringRequired

Display title.

At least 1 character. At most 200 characters.

signersarray of objectRequired

Named recipients and their individual signature states.

At least 1 item.

Item fields

emailstringRequired

Email address.

Format: email.

namestringOptional

The recipient's display name. Uses their account name or email when omitted.

At most 120 characters.

expires_atintegerOptional

Signing deadline in Unix milliseconds.

messagestringOptional

Message sent to the signature recipients with their invitation.

At most 2000 characters.

signature_methodstringOptional

Signature method required for the request.

Allowed: "standard", "bankid". Default: "standard".

Follow one signing request through completion

Upload a readable PDF, then request signatures and keep signing_request_id. The request keeps a fixed source; replacing the original file later does not change what recipients sign.

Read Get signing request for per-recipient progress. completed means everyone signed, but the archive can still be preparing: wait for non-null file_id before requesting the signed PDF. Get signing document returns a short-lived URL for either the fixed original or the signed archive.

Notification failures do not undo the signing request. Remind the affected pending recipients instead of creating a duplicate request. Recipients sign themselves; a delegated API call cannot supply a recipient's signature. See the complete signing workflow.

Response

Returns 200 OK with a JSON body.

signing_request_idstringRequired

Signing request identifier.

statusstringRequired

Current signing request or recipient state. A completed request may still be preparing its signed PDF.

Allowed: "pending".

invitation_failuresarray of stringRequired

Recipient email addresses whose invitation was not delivered. The request exists; use RemindSigners to retry delivery.

Errors & retries

Set BRIGG_REQUEST_ID once for each logical action. The samples send it as Idempotency-Key. Reuse the same value and body on retries, including after a timeout; a missing response does not prove the action failed.

For rate limits, follow the server’s retry guidance and back off. See HTTP errors and safe retries and limits.

HTTP status	Code	What to do
400	`invalid_json`	Send a JSON object with Content-Type: application/json.
400	`invalid_input`	Check the request fields and types. Supply a stable Idempotency-Key containing 1–200 characters.
401	`invalid_key`	The workspace API key is missing, invalid or revoked.
403	`forbidden`	Check the key’s operation and resource grants. If Brigg-Act-As is supplied, the key must be authorized to delegate to that member.
404	`not_found`	The requested operation or resource is not available to this credential.
429	`rate_limited`	Wait for Retry-After before retrying. Reuse the original Idempotency-Key.
422	`pdf_required`	Upload a PDF before requesting signatures.
422	`invalid_pdf`	Upload a readable PDF without password encryption.
402	`insufficient_credits`	BankID requires sufficient workspace credit. Refill credit before retrying.
503	`bankid_not_configured`	BankID is not configured for this environment. Use an available signing method or contact support.

Next steps

Download OpenAPI · Versioning & retirement

JSON schemas

Use the complete schemas for validation or client generation.

Full request JSON schema

{
  "type": "object",
  "properties": {
    "file_id": {
      "type": "string",
      "minLength": 1,
      "description": "Use a file_id returned by this listing or by CompleteUpload. It is not an upload ID, storage path or filename. [documents.ListDocuments](/reference/documents/ListDocuments)."
    },
    "title": {
      "type": "string",
      "minLength": 1,
      "maxLength": 200,
      "description": "Display title."
    },
    "signers": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "email": {
            "type": "string",
            "format": "email",
            "description": "Email address."
          },
          "name": {
            "type": "string",
            "maxLength": 120,
            "description": "The recipient's display name. Uses their account name or email when omitted."
          }
        },
        "required": [
          "email"
        ],
        "additionalProperties": false
      },
      "minItems": 1,
      "description": "Named recipients and their individual signature states."
    },
    "expires_at": {
      "type": "integer",
      "description": "Signing deadline in Unix milliseconds."
    },
    "message": {
      "type": "string",
      "maxLength": 2000,
      "description": "Message sent to the signature recipients with their invitation."
    },
    "signature_method": {
      "type": "string",
      "enum": [
        "standard",
        "bankid"
      ],
      "default": "standard",
      "description": "Signature method required for the request."
    }
  },
  "required": [
    "file_id",
    "title",
    "signers"
  ],
  "additionalProperties": false,
  "examples": [
    {
      "file_id": "f_example",
      "title": "Consulting agreement",
      "signers": [
        {
          "email": "alex@example.com",
          "name": "Alex Morgan"
        }
      ],
      "signature_method": "standard",
      "message": "Please review and sign our agreement."
    }
  ]
}

Full response JSON schema

{
  "type": "object",
  "properties": {
    "signing_request_id": {
      "type": "string",
      "description": "Signing request identifier."
    },
    "status": {
      "type": "string",
      "enum": [
        "pending"
      ],
      "description": "Current signing request or recipient state. A completed request may still be preparing its signed PDF."
    },
    "invitation_failures": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Recipient email addresses whose invitation was not delivered. The request exists; use RemindSigners to retry delivery."
    }
  },
  "required": [
    "signing_request_id",
    "status",
    "invitation_failures"
  ],
  "additionalProperties": false,
  "examples": [
    {
      "signing_request_id": "sig_example",
      "status": "pending",
      "invitation_failures": []
    }
  ]
}

Try the request

Use your API key in a server environment.

Act as a memberRequires administrator-approved delegation.

Fictional values. Replace IDs and business details with values from your workspace.

Request

cURL

curl 'https://api.brigg.app/v1/operations/signing.RequestFileSignatures' \
  -H "Authorization: Bearer $BRIGG_API_KEY" \
  -H 'Content-Type: application/json' \
  -H "Idempotency-Key: $BRIGG_REQUEST_ID" \
  --data-raw '{
  "file_id": "f_example",
  "title": "Consulting agreement",
  "signers": [
    {
      "email": "alex@example.com",
      "name": "Alex Morgan"
    }
  ],
  "signature_method": "standard",
  "message": "Please review and sign our agreement."
}'

TypeScript

const requestId = process.env.BRIGG_REQUEST_ID;
if (!requestId) throw new Error("Set BRIGG_REQUEST_ID once per action and reuse it on retries.");

const response = await fetch("https://api.brigg.app/v1/operations/signing.RequestFileSignatures", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.BRIGG_API_KEY}`,
    "Content-Type": "application/json",
    "Idempotency-Key": requestId, // Create once per action; reuse on retries.
  },
  body: JSON.stringify({
    "file_id": "f_example",
    "title": "Consulting agreement",
    "signers": [
      {
        "email": "alex@example.com",
        "name": "Alex Morgan"
      }
    ],
    "signature_method": "standard",
    "message": "Please review and sign our agreement."
  }),
});
const result = await response.json();
if (!response.ok) throw new Error(`${response.status}: ${result.error} — ${result.message}`);
console.log(result);

Python

import json
import os
from urllib.request import Request, urlopen
from urllib.error import HTTPError

request_id = os.environ["BRIGG_REQUEST_ID"]  # Reuse for retries of this action.
payload = {
  "file_id": "f_example",
  "title": "Consulting agreement",
  "signers": [
    {
      "email": "alex@example.com",
      "name": "Alex Morgan"
    }
  ],
  "signature_method": "standard",
  "message": "Please review and sign our agreement."
}
request = Request(
    "https://api.brigg.app/v1/operations/signing.RequestFileSignatures",
    data=json.dumps(payload).encode("utf-8"),
    headers={
        "Authorization": f"Bearer {os.environ['BRIGG_API_KEY']}",
        "Content-Type": "application/json",
        "Idempotency-Key": request_id,  # Create once per action; reuse on retries.
    },
    method="POST",
)
try:
    with urlopen(request) as response:
        print(json.load(response))
except HTTPError as error:
    print(error.code, json.load(error))
    raise

cURL

curl 'https://api.brigg.app/v1/operations/signing.RequestFileSignatures' \
  -H "Authorization: Bearer $BRIGG_API_KEY" \
  -H 'Content-Type: application/json' \
  -H "Brigg-Act-As: $BRIGG_ACT_AS" \
  -H "Idempotency-Key: $BRIGG_REQUEST_ID" \
  --data-raw '{
  "file_id": "f_example",
  "title": "Consulting agreement",
  "signers": [
    {
      "email": "alex@example.com",
      "name": "Alex Morgan"
    }
  ],
  "signature_method": "standard",
  "message": "Please review and sign our agreement."
}'

TypeScript

const actAs = process.env.BRIGG_ACT_AS;
if (!actAs) throw new Error("Set BRIGG_ACT_AS to an approved member account ID.");

const requestId = process.env.BRIGG_REQUEST_ID;
if (!requestId) throw new Error("Set BRIGG_REQUEST_ID once per action and reuse it on retries.");

const response = await fetch("https://api.brigg.app/v1/operations/signing.RequestFileSignatures", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.BRIGG_API_KEY}`,
    "Content-Type": "application/json",
    "Brigg-Act-As": actAs,
    "Idempotency-Key": requestId, // Create once per action; reuse on retries.
  },
  body: JSON.stringify({
    "file_id": "f_example",
    "title": "Consulting agreement",
    "signers": [
      {
        "email": "alex@example.com",
        "name": "Alex Morgan"
      }
    ],
    "signature_method": "standard",
    "message": "Please review and sign our agreement."
  }),
});
const result = await response.json();
if (!response.ok) throw new Error(`${response.status}: ${result.error} — ${result.message}`);
console.log(result);

Python

import json
import os
from urllib.request import Request, urlopen
from urllib.error import HTTPError

request_id = os.environ["BRIGG_REQUEST_ID"]  # Reuse for retries of this action.
payload = {
  "file_id": "f_example",
  "title": "Consulting agreement",
  "signers": [
    {
      "email": "alex@example.com",
      "name": "Alex Morgan"
    }
  ],
  "signature_method": "standard",
  "message": "Please review and sign our agreement."
}
request = Request(
    "https://api.brigg.app/v1/operations/signing.RequestFileSignatures",
    data=json.dumps(payload).encode("utf-8"),
    headers={
        "Authorization": f"Bearer {os.environ['BRIGG_API_KEY']}",
        "Content-Type": "application/json",
        "Brigg-Act-As": os.environ["BRIGG_ACT_AS"],
        "Idempotency-Key": request_id,  # Create once per action; reuse on retries.
    },
    method="POST",
)
try:
    with urlopen(request) as response:
        print(json.load(response))
except HTTPError as error:
    print(error.code, json.load(error))
    raise

200 OK Response example

{
  "signing_request_id": "sig_example",
  "status": "pending",
  "invitation_failures": []
}

Illustrative values, not a live response.