GC AI

GC AI is the AI platform for in-house legal teams, built by three-time General Counsel Cecilia Ziniti. It helps corporate counsel draft and review contracts, run reusable review Playbooks, conduct grounded legal research across 13M+ US court opinions, and work directly inside Microsoft Word. The GC AI External API (v1) gives programmatic access to chat completions, files, folders, projects, playbooks, and skills for workflow automation (Zapier, Make, n8n, or custom apps), and GC AI also operates an OAuth-protected Model Context Protocol (MCP) server. The platform is SOC 2 Type II, SOC 3, and GDPR compliant, with zero data-retention agreements with its model providers.

GC AI publishes 1 API on the APIs.io network: External API. Tagged areas include Company, Legal, Legal AI, Contracts, and In-House Counsel.

GC AI’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 25 more developer resources.

🌐 Visit website 📡 Source on GitHub
50.1/100 developing Agent 76/100 agent native Full breakdown ↓
scored 2026-07-20 · rubric v0.4
1 APIs 1 MCP Servers 0 Features
CompanyLegalLegal AIContractsIn-House CounselArtificial IntelligenceDocument ReviewEnterpriseMCP

API Rating

API Evangelist API Evangelist Rating How this is scored →
scored 2026-07-20 · rubric v0.4
Composite quality — 50.1/100 · developing
Contract Quality 8.4 / 25
Developer Ergonomics 13.5 / 20
Commercial Clarity 12.1 / 20
Operational Transparency 6.8 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 76/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/gc-ai: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs

GC AI External API

Programmatic access to GC AI's chat, files, folders, projects, playbooks, and skills for workflow automation. REST/JSON with API-key auth, offset pagination, an async job patter...

MCP Servers

gc-ai-mcp.yml

MCP SERVER

Rate Limits

Gc Ai Rate Limits

2 limits

RATE LIMITS

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 AgentSkill
AgentSkill
 WellKnown
WellKnown
 LLMsTxt
LLMsTxt
 AgenticAccess
AgenticAccess

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 DataModel
DataModel
 Conformance
Conformance

Access & Security 4

Authentication, authorization, and security posture

Compliance
Compliance
 TrustCenter
TrustCenter
 DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 7

Status, limits, changes, and where to get help

HelpCenter
HelpCenter
 Support
Support
 Community
Community
 StatusPage
StatusPage
 ChangeLog
ChangeLog
 ChangeLog
ChangeLog
 RateLimits
RateLimits

Scroll for all 7

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Blog
Blog
 Website
Website

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: gc-ai
name: GC AI
description: GC AI is the AI platform for in-house legal teams, built by three-time General Counsel Cecilia Ziniti. It helps
  corporate counsel draft and review contracts, run reusable review Playbooks, conduct grounded legal research across 13M+
  US court opinions, and work directly inside Microsoft Word. The GC AI External API (v1) gives programmatic access to chat
  completions, files, folders, projects, playbooks, and skills for workflow automation (Zapier, Make, n8n, or custom apps),
  and GC AI also operates an OAuth-protected Model Context Protocol (MCP) server. The platform is SOC 2 Type II, SOC 3, and
  GDPR compliant, with zero data-retention agreements with its model providers.
url: https://raw.githubusercontent.com/api-evangelist/gc-ai/refs/heads/main/apis.yml
image: https://framerusercontent.com/images/Zth3qSTP7QF72InJJ60jCoqi190.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- northzone
- scale-venture-partners
x-tier: enriched
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Legal
- Legal AI
- Contracts
- In-House Counsel
- Artificial Intelligence
- Document Review
- Enterprise
- MCP
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- name: GC AI External API
  description: Programmatic access to GC AI's chat, files, folders, projects, playbooks, and skills for workflow automation.
    REST/JSON with API-key auth, offset pagination, an async job pattern for long-running inference, and standard rate-limit
    headers.
  humanURL: https://docs.gc.ai/api-reference/introduction
  baseURL: https://app.gc.ai/api/external/v1
  properties:
  - type: OpenAPI
    url: openapi/gc-ai-openapi-original.yml
  - type: Documentation
    url: https://docs.gc.ai/api-reference/introduction
  - type: APIReference
    url: https://docs.gc.ai/api-reference/introduction
common:
- type: DeveloperPortal
  url: https://docs.gc.ai/
- type: Documentation
  url: https://docs.gc.ai/
- type: APIReference
  url: https://docs.gc.ai/api-reference/introduction
- type: GettingStarted
  url: https://docs.gc.ai/guides/getting-started/first-steps
- type: HelpCenter
  url: https://docs.gc.ai/
- type: Support
  url: mailto:support@gc.ai
- type: Community
  url: https://gc.ai/slack
- type: Blog
  url: https://gc.ai/blog
- type: Pricing
  url: https://gc.ai/pricing
- type: SignUp
  url: https://app.gc.ai/signup
- type: TermsOfService
  url: https://gc.ai/terms
- type: PrivacyPolicy
  url: https://gc.ai/privacy
- type: StatusPage
  url: https://status.gc.ai
- type: ChangeLog
  url: https://docs.gc.ai/changelog
- type: ChangeLog
  url: changelog/gc-ai-changelog.yml
- type: Compliance
  url: https://trust.gc.ai/
- type: TrustCenter
  url: security/gc-ai-trust-center.yml
- type: DomainSecurity
  url: security/gc-ai-domain-security.yml
- type: Authentication
  url: authentication/gc-ai-authentication.yml
- type: Conventions
  url: conventions/gc-ai-conventions.yml
- type: RateLimits
  url: rate-limits/gc-ai-rate-limits.yml
- type: ErrorCatalog
  url: errors/gc-ai-problem-types.yml
- type: Lifecycle
  url: lifecycle/gc-ai-lifecycle.yml
- type: DataModel
  url: data-model/gc-ai-data-model.yml
- type: Conformance
  url: conformance/gc-ai-conformance.yml
- type: Overlay
  url: overlays/gc-ai-openapi-overlay.yaml
- type: MCPServer
  url: mcp/gc-ai-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: WellKnown
  url: well-known/gc-ai-well-known.yml
- type: LLMsTxt
  url: llms/gc-ai-llms.txt
- type: AgenticAccess
  url: agentic-access/gc-ai-agentic-access.yml
- type: Website
  url: https://gc.ai
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence