BoldSign website screenshot

BoldSign

BoldSign is an e-signature platform built by Syncfusion that provides a REST API for sending documents for electronic signature, managing reusable templates, tracking envelope status, and embedding signing and requesting workflows directly into third-party applications. The API supports both API key and OAuth 2.0 authentication and outputs JSON responses across US, EU, CA, and AU regional endpoints. BoldSign offers official SDKs for .NET, Python, Java, Node.js, and PHP, along with a free sandbox environment, a Postman collection, and an interactive API Explorer. The platform is SOC 2 Type II, HIPAA, GDPR, and eIDAS compliant, and supports webhooks for real-time event notifications.

1 APIs 0 Features
E-SignatureElectronic SignatureDocument ManagementEmbedded SigningWebhooksTemplatesIdentity VerificationCompliance

APIs

BoldSign eSignature API

REST API for sending documents for signature, managing templates, embedding signing and requesting workflows, retrieving audit trails, prefilling form fields, configuring webhoo...

Pricing Plans

Boldsign Plans Pricing

6 plans

PLANS

Rate Limits

Boldsign Rate Limits

0 limits

RATE LIMITS

FinOps

Semantic Vocabularies

Boldsign Context

22 classes · 37 properties

JSON-LD

Example Payloads

Resources

🔗
Website
Website
🔗
Documentation
Documentation
👥
GitHubOrganization
GitHubOrganization
🔗
LinkedIn
LinkedIn
🔗
X
X
📰
Blog
Blog
💰
Pricing
Pricing
🟢
StatusPage
StatusPage
🔗
Sandbox
Sandbox
🔗
Plans
Plans
🔗
RateLimits
RateLimits
🔗
FinOps
FinOps

Sources

Raw ↑
aid: boldsign
name: BoldSign
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/boldsign/refs/heads/main/apis.yml
created: 2026-06-12
modified: 2026-06-12
specificationVersion: '0.19'
description: 'BoldSign is an e-signature platform built by Syncfusion that provides a REST API for sending documents for electronic
  signature, managing reusable templates, tracking envelope status, and embedding signing and requesting workflows directly
  into third-party applications. The API supports both API key and OAuth 2.0 authentication and outputs JSON responses across
  US, EU, CA, and AU regional endpoints. BoldSign offers official SDKs for .NET, Python, Java, Node.js, and PHP, along with
  a free sandbox environment, a Postman collection, and an interactive API Explorer. The platform is SOC 2 Type II, HIPAA,
  GDPR, and eIDAS compliant, and supports webhooks for real-time event notifications.

  '
tags:
- E-Signature
- Electronic Signature
- Document Management
- Embedded Signing
- Webhooks
- Templates
- Identity Verification
- Compliance
apis:
- name: BoldSign eSignature API
  description: 'REST API for sending documents for signature, managing templates, embedding signing and requesting workflows,
    retrieving audit trails, prefilling form fields, configuring webhooks, and managing users and teams.

    '
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://developers.boldsign.com/
  baseURL: https://api.boldsign.com
  tags:
  - E-Signature
  - Documents
  - Templates
  - Webhooks
  properties:
  - type: Documentation
    url: https://developers.boldsign.com/
  - type: OpenAPI
    url: https://api.boldsign.com/swagger/index.html
  - type: OpenAPISpec
    url: openapi/boldsign-esignature-openapi.yml
  - type: JSONSchema
    url: json-schema/boldsign-schemas.json
  - type: JSONLDContext
    url: json-ld/boldsign-context.jsonld
  - type: Vocabulary
    url: vocabulary/boldsign-vocabulary.yml
  - type: Postman
    url: https://developers.boldsign.com/api-overview/api-explorer/
  contact:
  - FN: BoldSign Support
    email: support@boldsign.com
common:
- type: Website
  url: https://boldsign.com/esignature-api/
- type: Documentation
  url: https://developers.boldsign.com/
- type: GitHubOrganization
  url: https://github.com/boldsign
- type: LinkedIn
  url: https://www.linkedin.com/showcase/bold-sign-app/
- type: X
  url: https://twitter.com/boldsignapp
- type: Blog
  url: https://boldsign.com/blogs/
- type: Pricing
  url: https://boldsign.com/electronic-signature-pricing/
- type: StatusPage
  url: https://status.boldsign.com/
- type: Sandbox
  url: https://developers.boldsign.com/api-overview/getting-started/
- type: Plans
  url: plans/boldsign-plans-pricing.yml
- type: RateLimits
  url: rate-limits/boldsign-rate-limits.yml
- type: FinOps
  url: finops/boldsign-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com