Charity Search vs Pick an Agency

CharityAPI (rebranded from OrgHunter) looks up US nonprofits by EIN across basic profile, financial, geolocation, and NTEE-classification datasets, sourced from IRS filings and pitched at donation platforms and vetting tools. Its real backend at `data.orghunter.com` trades a query-string `user_key` for JSON responses and rejects unauthenticated calls with a 403, and offers free development-phase API keys with production usage gated behind paid or affiliate-only plans.

Pick an Agency runs a free, no-signup REST + MCP API over its directory of 47,000+ verified marketing agencies, publishing a machine-readable OpenAPI spec at `/api/v1/openapi.json` alongside `/search`, `/agencies/{slug}`, and `/match` endpoints for shortlisting agencies by service, location, and rating. An OPTIONS preflight against `/api/v1/search` confirms the advertised open CORS policy (`access-control-allow-origin: *`), and no endpoint ever demanded a key or returned an auth challenge, reconfirming the stored 'None' auth. The three data-fetching GET endpoints themselves consistently timed out from this sandbox's egress on every attempt — the spec and homepage load fine, so their live JSON payloads could not be directly confirmed this run, though nothing points to the API being down.