NationBuilder Political CRM API

NationBuilder REST API for political campaign and organizing CRM platform. Enables AI agents to manage people and contact records, track tags and memberships, handle event management and RSVPs, manage fundraising and financial data, process survey results, manage blog and website content, integrate voter file data, and sync organizing data with email and digital communication tools.

Evaluated Mar 07, 2026 (0d ago) vcurrent
Homepage ↗ Developer Tools nationbuilder political crm campaign organizing advocacy community non-partisan
⚙ Agent Friendliness
59
/ 100
Can an agent use this?
🔒 Security
70
/ 100
Is it safe for agents?
⚡ Reliability
67
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
25
Documentation
75
Error Messages
68
Auth Simplicity
70
Rate Limits
65

🔒 Security

TLS Enforcement
90
Auth Strength
65
Scope Granularity
65
Dep. Hygiene
62
Secret Handling
65

Supporter personal and political data. SOC2. OAuth2 and API key. US data residency. Non-partisan platform.

⚡ Reliability

Uptime/SLA
70
Version Stability
70
Breaking Changes
62
Error Recovery
65
AF Security Reliability

Best When

A political campaign, advocacy organization, nonprofit, or community group using NationBuilder wants AI agents to automate supporter engagement, event management, donation tracking, and digital outreach workflows.

Avoid When

PRIVACY: Supporter personal data and political activity records are sensitive. Voter file data has state regulatory requirements. Automated contact must comply with CAN-SPAM, CASL, and TCPA.

Use Cases

  • Managing supporter contact records and engagement history from organizing agents
  • Processing event RSVPs and volunteer coordination from campaign operations agents
  • Tracking membership and donation data from nonprofit development agents
  • Syncing people data with email marketing tools from digital outreach agents

Not For

  • Pure for-profit CRM without community organizing and campaign focus
  • Healthcare CRM without political/advocacy organizing workflows
  • High-volume financial processing without organizing-centric workflows

Interface

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

Authentication

Methods: oauth api_key
OAuth: Yes Scopes: Yes

NationBuilder uses OAuth 2.0 and API key authentication. Nation-level credentials. OAuth for third-party app development. API keys for server-to-server. Scopes control data access. Public developer platform with comprehensive docs.

Pricing

Model: freemium
Free tier: No
Requires CC: No

Los Angeles company. Founded 2009. Non-partisan organizing platform used by campaigns, advocacy orgs, and community groups globally. Used by campaigns across the political spectrum. 9,000+ organizations.

Agent Metadata

Pagination
page
Idempotent
Partial
Retry Guidance
Documented

Known Gotchas

  • PRIVACY: Supporter personal and political activity data requires careful handling
  • No public MCP server — REST API with OAuth2 or API key
  • Non-partisan platform — works for campaigns across political spectrum
  • Voter file data integration has state regulatory requirements
  • Automated contact must comply with CAN-SPAM, CASL, TCPA
  • US data residency only — verify for international political campaigns

Alternatives

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$3

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Scores are editorial opinions as of 2026-03-07.

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