Contractbook

Contractbook is a contract lifecycle management (CLM) platform that turns static contracts into structured, automatable data. Its Public API v3 (base https://api.contractbook.com/v3, Bearer API-key auth) lets teams generate pre-filled contract drafts from any data source, send documents for electronic signature, manage templates, organize documents into spaces, run automations, upload attachments, and receive webhook notifications on document life-cycle events. Contractbook covers the full contract lifecycle - drafting, negotiation, signing, storage, and post-signature management - for legal, sales, HR, and procurement teams.

Contractbook publishes 7 APIs on the APIs.io network, including Attachments API, Automations API, Document sharing API, and 4 more. Tagged areas include Contract Management, Contract Lifecycle Management, Contract Lifecycle, Legal, and E-Signature.

Contractbook’s developer surface includes authentication, documentation, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

34.6/100 thin ▬ flat Agent 32/100 agent ready Front door AI 3/6 light saas Full breakdown ↓
scored 2026-10-04 · rubric v0.23.0

AccessPaid

1 published contract

Contract Management Contract Lifecycle Management Contract Lifecycle Legal E-Signature Contracts Document Automation Legal Tech

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Legal Management

BC-150

DocumentsTemplates

GET /documents GET /documents/{id} GET /documents/{id}/pdf POST /documents/{id}/send

Kin Score

Kin Score How this is scored →
scored 2026-10-04 · rubric v0.23.0

Composite quality — 34.6/100 · thin

Contract Quality 8.9 / 19

Developer Ergonomics 4.8 / 15

Access Clarity 5.4 / 15

Operational Transparency 3.5 / 10

Contract Governance 0.0 / 9

Discoverability 5.0 / 8

Regulatory Posture 0.9 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 32/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/contractbook: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 7

Individual APIs this provider publishes, each with its own machine-readable definition.

Contractbook Document Webhooks

Contractbook's document life-cycle notification (webhook) mechanism. When a document is created, updated, or signed, Contractbook sends an HTTP request to a client-configured ca...

Contractbook Attachments API

The Attachments API from Contractbook — 1 operation(s) for attachments.

Contractbook Automations API

The Automations API from Contractbook — 2 operation(s) for automations.

Contractbook Document sharing API

The Document sharing API from Contractbook — 1 operation(s) for document sharing.

Contractbook Documents API

The Documents API from Contractbook — 5 operation(s) for documents.

Contractbook Spaces API

The Spaces API from Contractbook — 2 operation(s) for spaces.

Contractbook Templates API

The Templates API from Contractbook — 2 operation(s) for templates.

Scroll for all 7

Open Collections 8

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Contractbook Attachments API

OPEN COLLECTION

Contractbook Attachments Automations API

OPEN COLLECTION

Contractbook Attachments Document sharing API

OPEN COLLECTION

Contractbook Attachments Documents API

OPEN COLLECTION

Contractbook Attachments Spaces API

OPEN COLLECTION

Contractbook Attachments Templates API

OPEN COLLECTION

Contractbook API v3

OPEN COLLECTION

Scroll for all 8

Pricing Plans 1

Published pricing tiers and plan structures.

Contractbook Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Contractbook Rate Limits

4 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Contractbook Finops

FINOPS

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Contractbook Authentication

http · 1 scheme

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Contractbook Agentic Access

16 operations · 9 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 1

Authentication, authorization, and security posture

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

SupportCenter

SupportCenter

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: contractbook
url: https://raw.githubusercontent.com/api-evangelist/contractbook/refs/heads/main/apis.yml
name: Contractbook
kind: company
description: Contractbook is a contract lifecycle management (CLM) platform that turns static contracts into structured, automatable
  data. Its Public API v3 (base https://api.contractbook.com/v3, Bearer API-key auth) lets teams generate pre-filled contract
  drafts from any data source, send documents for electronic signature, manage templates, organize documents into spaces,
  run automations, upload attachments, and receive webhook notifications on document life-cycle events. Contractbook covers
  the full contract lifecycle - drafting, negotiation, signing, storage, and post-signature management - for legal, sales,
  HR, and procurement teams.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/contractbook.png
x-docs-platform: stoplight
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-09-24
tags:
- Contract Management
- Contract Lifecycle Management
- Contract Lifecycle
- Legal
- E-Signature
- Contracts
- Document Automation
- Legal Tech
tags_raw:
- Contract Management
- CLM
- Contract Lifecycle
- Legal
- eSignature
- Contracts
- Document Automation
- LegalTech
created: '2026-07-11'
modified: '2026-07-11'
specificationVersion: '0.23'
apis:
- aid: contractbook:contractbook-document-webhooks
  name: Contractbook Document Webhooks
  tags:
  - Webhook
  - Notification
  - Event
  - Contract Lifecycle Management
  - Contract Lifecycle
  tags_raw:
  - Webhooks
  - Notifications
  - Events
  - CLM
  - Contract Lifecycle
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://api.contractbook.com/v3/docs#section/Use-cases/Scenario-7.-Receiving-notifications-for-document-life-cycle-events
  baseURL: https://api.contractbook.com/v3
  properties:
  - url: https://api.contractbook.com/v3/docs
    type: Documentation
  - url: webhooks/contractbook-webhooks.yml
    type: Webhooks
  description: Contractbook's document life-cycle notification (webhook) mechanism. When a document is created, updated, or
    signed, Contractbook sends an HTTP request to a client-configured callback URL, letting integrations react to contract
    state changes instead of polling. Webhook payloads are unauthenticated by default; an access_token query parameter can
    be added to the callback URL, and recipients are advised to confirm state via an authenticated GET /documents/{id} call.
    Webhook subscriptions are configured in Contractbook rather than through documented CRUD endpoints in the Public API v3
    OpenAPI, so this API is honestly modeled from the documented notification behavior.
- aid: contractbook:contractbook-attachments-api
  name: Contractbook Attachments API
  description: The Attachments API from Contractbook — 1 operation(s) for attachments.
  humanURL: https://api.contractbook.com/v3/docs
  baseURL: https://api.contractbook.com/v3
  tags:
  - Attachments
  properties:
  - type: OpenAPI
    url: openapi/contractbook-attachments-api-openapi.yml
  - type: Documentation
    url: https://api.contractbook.com/v3/docs
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20documents
  - type: PostmanCollection
    url: collections/contractbook.postman_collection.json
  - type: OpenCollection
    url: collections/contractbook.opencollection.json
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20templates
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Share%20a%20document
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20automations
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20space%20tree
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Upload%20an%20attachment
- aid: contractbook:contractbook-automations-api
  name: Contractbook Automations API
  description: The Automations API from Contractbook — 2 operation(s) for automations.
  humanURL: https://api.contractbook.com/v3/docs
  baseURL: https://api.contractbook.com/v3
  tags:
  - Automation
  tags_raw:
  - Automations
  properties:
  - type: OpenAPI
    url: openapi/contractbook-automations-api-openapi.yml
  - type: Documentation
    url: https://api.contractbook.com/v3/docs
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20documents
  - type: PostmanCollection
    url: collections/contractbook.postman_collection.json
  - type: OpenCollection
    url: collections/contractbook.opencollection.json
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20templates
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Share%20a%20document
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20automations
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20space%20tree
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Upload%20an%20attachment
- aid: contractbook:contractbook-document-sharing-api
  name: Contractbook Document sharing API
  description: The Document sharing API from Contractbook — 1 operation(s) for document sharing.
  humanURL: https://api.contractbook.com/v3/docs
  baseURL: https://api.contractbook.com/v3
  tags:
  - Document Sharing
  tags_raw:
  - Document sharing
  properties:
  - type: OpenAPI
    url: openapi/contractbook-document-sharing-api-openapi.yml
  - type: Documentation
    url: https://api.contractbook.com/v3/docs
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20documents
  - type: PostmanCollection
    url: collections/contractbook.postman_collection.json
  - type: OpenCollection
    url: collections/contractbook.opencollection.json
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20templates
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Share%20a%20document
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20automations
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20space%20tree
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Upload%20an%20attachment
- aid: contractbook:contractbook-documents-api
  name: Contractbook Documents API
  description: The Documents API from Contractbook — 5 operation(s) for documents.
  humanURL: https://api.contractbook.com/v3/docs
  baseURL: https://api.contractbook.com/v3
  tags:
  - Documents
  properties:
  - type: OpenAPI
    url: openapi/contractbook-documents-api-openapi.yml
  - type: Documentation
    url: https://api.contractbook.com/v3/docs
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20documents
  - type: PostmanCollection
    url: collections/contractbook.postman_collection.json
  - type: OpenCollection
    url: collections/contractbook.opencollection.json
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20templates
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Share%20a%20document
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20automations
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20space%20tree
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Upload%20an%20attachment
- aid: contractbook:contractbook-spaces-api
  name: Contractbook Spaces API
  description: The Spaces API from Contractbook — 2 operation(s) for spaces.
  humanURL: https://api.contractbook.com/v3/docs
  baseURL: https://api.contractbook.com/v3
  tags:
  - Spaces
  - Space
  tags_raw:
  - Spaces
  - Space
  properties:
  - type: OpenAPI
    url: openapi/contractbook-spaces-api-openapi.yml
  - type: Documentation
    url: https://api.contractbook.com/v3/docs
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20documents
  - type: PostmanCollection
    url: collections/contractbook.postman_collection.json
  - type: OpenCollection
    url: collections/contractbook.opencollection.json
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20templates
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Share%20a%20document
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20automations
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20space%20tree
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Upload%20an%20attachment
- aid: contractbook:contractbook-templates-api
  name: Contractbook Templates API
  description: The Templates API from Contractbook — 2 operation(s) for templates.
  humanURL: https://api.contractbook.com/v3/docs
  baseURL: https://api.contractbook.com/v3
  tags:
  - Templates
  properties:
  - type: OpenAPI
    url: openapi/contractbook-templates-api-openapi.yml
  - type: Documentation
    url: https://api.contractbook.com/v3/docs
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20documents
  - type: PostmanCollection
    url: collections/contractbook.postman_collection.json
  - type: OpenCollection
    url: collections/contractbook.opencollection.json
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20templates
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Share%20a%20document
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20list%20of%20automations
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Get%20a%20space%20tree
  - type: APIReference
    url: https://api.contractbook.com/v3/docs#/operations/Upload%20an%20attachment
common:
- type: CapabilityMap
  url: capabilities/contractbook-capability-edges.yml
  name: Contractbook Business Capability Map
- type: AgenticAccess
  url: agentic-access/contractbook-agentic-access.yml
- type: Authentication
  url: authentication/contractbook-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/contractbook
- type: Website
  url: https://contractbook.com
- type: Documentation
  url: https://api.contractbook.com/v3/docs
- type: SupportCenter
  url: https://support.contractbook.com
- type: Plans
  url: plans/contractbook-plans-pricing.yml
- type: RateLimits
  url: rate-limits/contractbook-rate-limits.yml
- type: FinOps
  url: finops/contractbook-finops.yml
- url: https://contractbook.com/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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