NationBuilder

NationBuilder Signups API

Signups store information about people in your nation. Further information available [here](https://support.nationbuilder.com/en/articles/8810042-how-records-are-added-to-the-people-database).

GitHub OpenAPI
Business capability
Customer Data Management BC-420.10

Operations 7

POST /api/v2/signups Create a signup #
GET /api/v2/signups List all signups in a nation #
GET /api/v2/signups/me Show signup assigned to auth token #
PATCH /api/v2/signups/push Push signup data into nation #
GET /api/v2/signups/{id} Show signup with provided ID #
PATCH /api/v2/signups/{id} Update an existing signup #
DELETE /api/v2/signups/{id} Delete signup with provided ID #

Documentation

📖
Documentation
https://support.nationbuilder.com/en/collections/10408291-api
📖
APIReference
https://support.nationbuilder.com/en/articles/10857983-interactive-api-documentation-endpoint-explorer
📖
GettingStarted
https://support.nationbuilder.com/en/articles/9869274-nationbuilder-api-quickstart-guide

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/nationbuilder/refs/heads/main/openapi/nationbuilder-signups-api-openapi.yml

Other Resources

🔗
InteractiveDocs
https://nationbuilder.com/api/v2/reference

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/nationbuilder-signups-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

nationbuilder-signups-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: NationBuilder V2 Signups API
  version: '2.0'
  description: 'The NationBuilder V2 API is a JSON:API-compliant API for managing NationBuilder

    resources such as people, donations, events, and lists.'
servers:
- url: https://{subdomain}.nationbuilder.com
  variables:
    subdomain:
      default: yournation
      description: Your NationBuilder nation slug
security:
- BearerAuth: []
tags:


# --- truncated at 32 KB (65 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/nationbuilder/refs/heads/main/openapi/nationbuilder-signups-api-openapi.yml