Relativity E-Discovery & Legal Review API

Relativity REST API for e-discovery and legal document review platform. Enables AI agents to manage document review workspaces, handle document ingestion and processing pipelines, access review and coding decisions on documents, retrieve privilege log and responsiveness data, manage search and analytics queries, access production and export workflows, retrieve reviewer assignment and progress data, handle legal hold management, and integrate e-discovery data with case management and litigation support systems.

Evaluated Mar 06, 2026 (0d ago) vcurrent
Homepage ↗ Repo ↗ Developer Tools relativity ediscovery legal review review-ai litigation compliance data-review
⚙ Agent Friendliness
63
/ 100
Can an agent use this?
🔒 Security
81
/ 100
Is it safe for agents?
⚡ Reliability
75
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
30
Documentation
80
Error Messages
75
Auth Simplicity
68
Rate Limits
68

🔒 Security

TLS Enforcement
95
Auth Strength
80
Scope Granularity
78
Dep. Hygiene
72
Secret Handling
80

E-discovery legal data. SOC2, ISO27001, GDPR, FedRAMP. OAuth2. Multi-region. Privilege protections. Legal hold.

⚡ Reliability

Uptime/SLA
80
Version Stability
78
Breaking Changes
70
Error Recovery
72
AF Security Reliability

Best When

A law firm, corporate legal department, or e-discovery service provider using Relativity wants AI agents to automate document review workflows, privilege logging, production management, and litigation analytics.

Avoid When

PRIVACY+PRIVILEGE: E-discovery documents contain highly sensitive information including privileged attorney-client communications, work product, and confidential business data under legal hold. Automated privilege decisions must have attorney oversight. Inadvertent privilege waiver is a legal risk.

Use Cases

  • Managing document review workspaces and workflows from litigation support agents
  • Accessing privilege and responsiveness coding decisions from legal analytics agents
  • Retrieving production set and export data from document production agents
  • Managing legal holds and custodian data from litigation hold management agents

Not For

  • General document management without e-discovery and legal review workflows
  • Small law firms without large-scale document review needs
  • Non-litigation compliance without formal e-discovery requirements

Interface

REST API
Yes
GraphQL
No
gRPC
No
MCP Server
No
SDK
Yes
Webhooks
No

Authentication

Methods: api_key oauth
OAuth: Yes Scopes: Yes

Relativity uses OAuth 2.0 and API key for API access. Workspace-level and system-level credentials. RelativityOne (cloud) and Relativity (on-premises) have different API configurations. Relativity Developer Portal with C# and Python SDKs. Strong developer ecosystem.

Pricing

Model: enterprise
Free tier: No
Requires CC: No

Chicago, Illinois. Founded 2001. Market leader for e-discovery software globally. RelativityOne is the cloud version. Used by 180+ of the AmLaw 200. 10,000+ law firms and corporations. Acquired kCura 2001, rebranded Relativity 2016. Strong AI/ML features (Active Learning). Competes with Nuix and Reveal.

Agent Metadata

Pagination
cursor
Idempotent
Partial
Retry Guidance
Documented

Known Gotchas

  • PRIVACY+PRIVILEGE: E-discovery docs include privileged communications — automated privilege decisions need attorney oversight
  • No public MCP server — OAuth2 REST API with C# and Python SDKs
  • Inadvertent privilege waiver risk — automated privilege coding without attorney review is legally risky
  • RelativityOne (cloud) vs on-premises have different API endpoints — verify deployment
  • Legal hold data has specific preservation requirements — deletion automation must check hold status
  • Active Learning AI review features are separate from API — RAL model configuration not fully API-controllable

Alternatives

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Scores are editorial opinions as of 2026-03-06.

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