API

Read-only JSON over HTTPS, for everything the site shows. Sign in to create a key.

Requests

Base: https://thirdpartyindex.com/api/v1
Key: Authorization: Bearer vti_…. Never in the URL.
Limit: 60 requests a minute per key unless agreed otherwise; 429 with Retry-After beyond it.
Responses: {"data": …}; lists add next_cursor, passed back as ?cursor=. Errors: {"error": {"code", "message"}}.
Times: RFC 3339, UTC. Dates YYYY-MM-DD.
License: Data is CC BY 4.0: reuse it, crediting Third Party Index with a link. Evidence text quotes vendors’ documents, which remain theirs.
Evidence: evidence_id is the snapshot a value was read from: its hashes, and its text with ?include=text.

curl -H "Authorization: Bearer $API_KEY" https://thirdpartyindex.com/api/v1/vendors/slack/subprocessors

Endpoints

GET	Parameters	Returns
`/vendors`	q, limit (≤500), cursor	Vendors: transparency score, document and subprocessor counts
`/vendors/{slug}`		A vendor and its monitored documents
`/vendors/{slug}/subprocessors`		Current subprocessors: purposes, locations, transfer mechanisms, listed since
`/vendors/{slug}/used-by`		Tracked vendors listing it as a subprocessor, with their stated purposes
`/vendors/{slug}/changes`	cursor, limit	Its published changes
`/vendors/{slug}/federal`	role (funding \| awarding)	Federal agencies in its contract records
`/vendors/{slug}/federal/awards`	org, role	The award records behind them
`/government/orgs`	level, parent	Departments, agencies or offices, with tracked vendors
`/government/orgs/{slug}`	role	An organization and the vendors in its records
`/changes`	cursor, vendor, limit (≤1000)	All published changes
`/evidence/{id}`	include=text	A snapshot: source, fetch time, hashes

Change feed

/changes lists published changes oldest first. Keep the last next_cursor and pass it back to receive only newer ones; an empty page returns the same cursor.