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Candid

Candid (formed from the 2019 merger of Foundation Center and GuideStar) helps social sector organizations advance their missions by sharing information, breaking down barriers, and improving giving. Candid maintains the most comprehensive set of data on U.S. nonprofits, foundations, grants, and philanthropy, and exposes that data through a family of developer APIs — Essentials, Premier, Charity Check, Demographics, Grants, News, Taxonomy, Eligibility, and PDF/Bulk variants — available through the Candid Developer Portal.

8 APIs 0 Features
CharitiesDonationsNon-ProfitsPhilanthropyFoundationsGrants990sDemographics

APIs

Candid Essentials API

Core nonprofit search and lookup. Provides fast search over Candid's database of U.S. nonprofits by name, EIN, location, NTEE code, size, and more. Returns summary records suita...

Candid Premier API

Deep nonprofit profile data. Returns comprehensive records for a given organization including financials, programs, leadership, board, grants received and awarded, operating det...

Candid Charity Check API

Real-time nonprofit verification and compliance screening used for due diligence, donation compliance, and tax-deductibility checks. Returns IRS 501(c)(3) status, revocation his...

Candid Demographics API

Structured demographic data voluntarily provided by nonprofits about their staff, board, and populations served. Enables funders and platforms to analyze equity, diversity, and ...

Candid Grants API

Access to Candid's global grants dataset — summary statistics, funders, recipients, and individual transaction records. Useful for philanthropic benchmarking, funder research, a...

Candid News API

Search and retrieve philanthropic news content from Candid's curated news database covering funders, grantees, sector trends, and policy. Supports customizable parameters for da...

Candid Taxonomy API

Returns Candid's philanthropic classification system (subject, population, support-strategy, and geographic area taxonomies) so integrators can consistently tag and query nonpro...

Candid Nonprofit Eligibility API

Evaluates whether a given nonprofit is eligible to receive a grant or donation based on configurable rules — IRS status, country, OFAC, custom program criteria — to automate gra...

Collections

Candid Essentials API

OPEN

Pricing Plans

Candid Plans Pricing

3 plans

PLANS

Rate Limits

Candid Rate Limits

5 limits

RATE LIMITS

FinOps

Candid Finops

FINOPS

Resources

👥
GitHubOrganization
GitHubOrganization
🔗
LinkedIn
LinkedIn
🔗
Website
Website
🌐
DeveloperPortal
DeveloperPortal
🌐
DataPortal
DataPortal
🔗
APIsOverview
APIsOverview
💰
PricingAndAccess
PricingAndAccess
📜
PrivacyPolicy
PrivacyPolicy
📜
TermsOfService
TermsOfService
💬
Support
Support
🔗
LlmsText
LlmsText

Sources

Raw ↑ 
opencollection: 1.0.0
info:
  name: Candid Essentials API
  version: v4
request:
  auth:
    type: apikey
    key: Subscription-Key
    value: '{{Subscription-Key}}'
    placement: header
items:
- info:
    name: Search
    type: folder
  items:
  - info:
      name: Search Essentials v4
      type: http
    http:
      method: POST
      url: https://api.candid.org/essentials/v4
      body:
        type: json
        data: '{}'
    docs: Search Candid's database of U.S. nonprofits using the v4 search endpoint, supporting flexible filters and faceted
      search.
  - info:
      name: Search Essentials v3
      type: http
    http:
      method: POST
      url: https://api.candid.org/essentials/v3
      body:
        type: json
        data: '{}'
    docs: Search Candid's database of U.S. nonprofits using the v3 search endpoint.
  - info:
      name: Search Essentials v2
      type: http
    http:
      method: POST
      url: https://api.candid.org/essentials/v2
      body:
        type: json
        data: '{}'
    docs: Search Candid's database of U.S. nonprofits using the v2 search endpoint.
  - info:
      name: Search Essentials v1
      type: http
    http:
      method: POST
      url: https://api.candid.org/essentials/v1
      body:
        type: json
        data: '{}'
    docs: Search Candid's database of U.S. nonprofits using the v1 search endpoint.
- info:
    name: Lookup
    type: folder
  items:
  - info:
      name: List Lookup Filters
      type: http
    http:
      method: GET
      url: https://api.candid.org/essentials/lookup
    docs: Returns the list of available lookup filters (e.g., NTEE codes, states, subjects) supported by the Essentials API.
  - info:
      name: Get Lookup Values for Filter
      type: http
    http:
      method: GET
      url: https://api.candid.org/essentials/lookup/:filter_name
      params:
      - name: filter_name
        value: ''
        type: path
        description: Name of the lookup filter to retrieve values for.
    docs: Returns the available lookup values for a named filter (e.g., states, NTEE codes, subjects).
  - info:
      name: Get Lookup Detail
      type: http
    http:
      method: GET
      url: https://api.candid.org/essentials/lookup/:filter_name/:key_or_value
      params:
      - name: filter_name
        value: ''
        type: path
        description: Name of the lookup filter.
      - name: key_or_value
        value: ''
        type: path
        description: Key or value within the lookup filter to retrieve.
    docs: Returns the detail for a single lookup value within a filter, by key or value.
bundled: true