NationGraph Contacts API

The Contacts API from NationGraph — 2 operation(s) for contacts.

Operations 2

GET /api/v3/contacts Get Contacts #
POST /api/v3/contacts/search Search Contacts #

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/nationgraph-contacts-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.

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

OpenAPI Specification

nationgraph-contacts-api-openapi.yml Raw ↑
openapi: 3.2.0
info:
  title: Nationgraph Accounts Contacts API
  version: 0.2.36
servers:
- url: https://api.nationgraph.com
  description: Base URL declared by the provider in apis.yml (roadmap#122).
tags:
- name: Contacts
paths:
  /api/v3/contacts:
    get:
      tags:
      - Contacts
      summary: Get Contacts
      operationId: get_contacts_api_v3_contacts_get
      security:
      - HTTPBearer: []
      parameters:
      - name: institution_id
        in: query
        required: false
        schema:
          type: string
          title: Institution Id
      - name: ids
        in: query
        required: false
        schema:
          type: array
          items:
            type: integer
          title: Ids
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/app__types__contacts__contact_response__ContactResponse'
                title: Response Get Contacts Api V3 Contacts Get
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
  /api/v3/contacts/search:
    post:
      tags:
      - Contacts
      summary: Search Contacts
      description: 'Search for contacts using complex criteria.

        Uses POST because search criteria are complex and better suited for request body.'
      operationId: search_contacts_api_v3_contacts_search_post
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ContactSearchCriteria'
        required: true
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                items:
                  $ref: '#/components/schemas/app__types__contacts__contact_response__ContactResponse'
                type: array
                title: Response Search Contacts Api V3 Contacts Search Post
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
      security:
      - HTTPBearer: []
components:
  schemas:
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
            - type: string
            - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
      - loc
      - msg
      - type
      title: ValidationError
    EmailStatus:
      type: string
      enum:
      - valid
      - do_not_mail
      - unknown
      - risky
      - not_verified
      title: EmailStatus
    app__types__contacts__contact_response__ContactResponse:
      properties:
        id:
          anyOf:
          - type: integer
          - type: 'null'
          title: Id
        full_name:
          type: string
          title: Full Name
        title:
          type: string
          title: Title
        email:
          anyOf:
          - type: string
          - type: 'null'
          title: Email
        phone:
          anyOf:
          - type: string
          - type: 'null'
          title: Phone
        institution_id:
          type: string
          title: Institution Id
        updated_at:
          anyOf:
          - type: string
            format: date-time
          - type: 'null'
          title: Updated At
        scrape_timestamp:
          anyOf:
          - type: string
            format: date-time
          - type: 'null'
          title: Scrape Timestamp
        scraper_filename:
          anyOf:
          - type: string
          - type: 'null'
          title: Scraper Filename
        email_status:
          anyOf:
          - type: string
          - type: 'null'
          title: Email Status
        entity_name:
          anyOf:
          - type: string
          - type: 'null'
          title: Entity Name
        mailing_address:
          anyOf:
          - type: string
          - type: 'null'
          title: Mailing Address
        search_metadata:
          anyOf:
          - $ref: '#/components/schemas/SearchMetadata'
          - type: 'null'
      type: object
      required:
      - full_name
      - title
      - institution_id
      title: ContactResponse
    SearchMetadata:
      properties:
        reason:
          type: string
          title: Reason
        citations:
          items:
            type: string
          type: array
          title: Citations
        direct_match:
          type: boolean
          title: Direct Match
        verified:
          anyOf:
          - type: boolean
          - type: 'null'
          title: Verified
      type: object
      required:
      - reason
      - citations
      - direct_match
      title: SearchMetadata
    ContactSearchCriteria:
      properties:
        description:
          type: string
          title: Description
        institution_id:
          type: string
          title: Institution Id
        start_date:
          anyOf:
          - type: string
          - type: 'null'
          title: Start Date
        end_date:
          anyOf:
          - type: string
          - type: 'null'
          title: End Date
        search_type:
          anyOf:
          - type: string
          - type: 'null'
          title: Search Type
          default: hybrid
        email_statuses:
          anyOf:
          - items:
              $ref: '#/components/schemas/EmailStatus'
            type: array
          - type: 'null'
          title: Email Statuses
      type: object
      required:
      - description
      - institution_id
      title: ContactSearchCriteria
  securitySchemes:
    HTTPBearer:
      type: http
      scheme: bearer