How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Need help?

Contact us
Candid

Candid Search API

Operations for searching the Candid nonprofit database.

Documentation Provider Profile APIs.io OpenAPI GitHub

Candid Search API is one of 9 APIs that Candid publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Search. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

This API exposes 4 operations across 4 paths, and defines 3 schemas. It is described by OpenAPI 3.2.0, at version v4.

Requests are made against a single base URL, https://api.candid.org/essentials.

4 operations 4 paths 3 schemas 4 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
v4
Base URL
https://api.candid.org/essentials
Authentication
API Key
Contact
Candid Developer Support
Terms of Service
View terms
Resource Areas
1

Authentication & Security 1

Candid Search API declares 1 security scheme for authenticating requests. An API key is passed in the header as Subscription-Key (apiKeyAuth). By default, every request must be authenticated.

  • apiKeyAuth — Candid subscription key required to call the Essentials API.

Paths & Operations 4

Across 4 paths, the API surfaces 4 operations — 4 POST. Each is listed below with its method, path, parameters, and response codes.

Search 4

Operations for searching the Candid nonprofit database.

POST
/v4
Search Essentials v4
searchEssentialsV4 body → 200400401
POST
/v3
Search Essentials v3
searchEssentialsV3 body → 200
POST
/v2
Search Essentials v2
searchEssentialsV2 body → 200
POST
/v1
Search Essentials v1
searchEssentialsV1 body → 200

Schemas 3

The contract defines 3 schemas that model the data the API accepts and returns. The most detailed is Error (2 properties). Each schema is shown below with its type and property counts.

Error
object
Generic error response.
2 properties
SearchResponse
object
A generic search response object returned by Essentials endpoints.
SearchRequest
object
A generic search request object accepted by Essentials search endpoints.

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

candid-search-api-openapi.yml Raw ↑

Other APIs Candid publishes across the network.

Candid Premier API
AE Profile APIs.io
Candid Charity Check API
AE Profile APIs.io
Candid Demographics API
AE Profile APIs.io
Candid Grants API
AE Profile APIs.io
Candid News API
AE Profile APIs.io
Candid Taxonomy API
AE Profile APIs.io
Candid Nonprofit Eligibility API
AE Profile APIs.io
Candid Lookup API
AE Profile APIs.io
#Search
← Back to C APIs
API Details
ID
candid:candid-search-api
Base URL
https://api.candid.org/essentials
Docs
https://developer.candid.org/reference/welcome
Provider
Candid
APIs.io →  GitHub →
Explore more
All APIs Providers APIs.io Network
Work with this as data

Every API here is available over the API and to AI agents over MCP. APIs is not yet its own endpoint on the v1 API. Reach this content through network search and the tag graph, or the MCP server below.

Installs https://mcp.apievangelist.com/mcp in Claude, Cursor, VS Code and the rest — one button, every client.

MCP tools for apis
4 tools reach this content
  • search_api_evangelistSearch every content type across the network at once.
  • find_relatedThe shared-tag relevance graph — what else covers this.
  • get_tagEverything one tag labels, across all content types.
  • guide_topicPRO — a curated bundle for a topic: area, guidance, rules, papers, stories, services.
All tools & prompts
Call it yourself
curl for this page
Search the network for this 
curl "https://api.apievangelist.com/v1/search?q=candid-search-api&limit=10"
Everything under a tag 
curl "https://api.apievangelist.com/v1/tags/candid-search-api"

Discovery needs no key. Full bodies and the synthesis endpoints are Pro.

Get an API key

Free tier, no email required. Sign in with whichever identity you already have.

GitHub Google LinkedIn

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

Where this information came from

This is an independent, third-party profile of Candid Search API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.