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Octopart
What used to be the standalone Octopart REST API has been folded into Nexar, whose GraphQL endpoint now serves the same electronic-component sourcing data plus additional design and manufacturing schemas. Access requires an OAuth2 client-credentials token from Nexar's identity service, confirmed live by an invalid_client error from the real token endpoint, rather than the old non-expiring Octopart API key. New applications get a free evaluation tier before paid Standard/Pro/Enterprise plans apply.
GreatAPIs Score
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<a href="https://greatapis.com/api/octopart/"><img src="https://greatapis.com/badge/octopart.svg" alt="Scored 54 on greatapis.com"></a>Auth quickstart
- Register an app / run the OAuth flow to obtain a bearer token.
- Send it as an Authorization header
Authorization: Bearer <token>
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.
Developer reference
Free/evaluation tier: one evaluation supply app with a lifetime part limit of 100 matched parts (does not reset monthly; new non-evaluation apps default to a 0 part limit); all API calls, including paid tiers, hit a hard 90-second request timeout, per Nexar/Octopart's own support docs