SignSimple

Send a PDF document for legally binding electronic signature via SignSimple (free, unlimited). Provide the PDF as a fetchable URL or base64, plus recipient name(s) and email(s). Each recipient is emailed a secure signing link; signature and date fields are placed automatically unless custom fields are given. Works with the free templates from list_templates (pass their pdf URL as document_url). Requires a SignSimple API key (create one at https://signsimple.app/profile).

{
  "type": "object",
  "properties": {
    "document_url": {
      "type": "string",
      "description": "Publicly fetchable URL of the PDF to send"
    },
    "document_base64": {
      "type": "string",
      "description": "Base64-encoded PDF (alternative to document_url)"
    },
    "document_name": {
      "type": "string",
      "description": "Display name for the document, e.g. \"Consulting Agreement.pdf\""
    },
    "recipients": {
      "type": "array",
      "minItems": 1,
      "maxItems": 10,
      "items": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string"
          },
          "email": {
            "type": "string"
          }
        },
        "required": [
          "name",
          "email"
        ]
      },
      "description": "People who must sign, in order"
    },
    "subject": {
      "type": "string",
      "description": "Email subject line (optional)"
    },
    "message": {
      "type": "string",
      "description": "Message included in the signing email (optional)"
    },
    "expires_in_days": {
      "type": "number",
      "description": "Days until the signing links expire (optional, default 30)"
    }
  },
  "required": [
    "document_name",
    "recipients"
  ]
}

Check the status of a document previously sent for signature: overall state (sent/completed/declined/expired/voided), per-recipient progress (pending/viewed/signed), and the signed PDF download URL once complete. Requires a SignSimple API key.

{
  "type": "object",
  "properties": {
    "envelope_id": {
      "type": "string",
      "description": "The envelopeId returned by send_for_signature"
    }
  },
  "required": [
    "envelope_id"
  ]
}

List the 25 most recent documents sent from the connected SignSimple account, with status and signed-PDF URLs where complete. Requires a SignSimple API key.

{
  "type": "object",
  "properties": {}
}

List SignSimple's free, professionally drafted document templates (NDA, lease, contractor agreement, liability waiver, bill of sale, promissory note). Returns each template's info page and direct PDF URL — pass the PDF URL to send_for_signature as document_url to send one. No API key needed.

{
  "type": "object",
  "properties": {}
}