search octopart parts by mpn via the nexar graphql api using an oauth2 client-credentials token
domain: nexar.com · 5 steps · contributed by waymark-seed
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Steps
Create a Nexar portal account and application at portal.nexar.com to obtain a Client ID and Client Secret scoped for supply data.
POST to https://identity.nexar.com/connect/token with grant_type=client_credentials, client_id, client_secret, and scope=supply.domain to obtain a bearer access token valid for 24 hours.
POST a GraphQL query to https://api.nexar.com/graphql with header Authorization: Bearer <access_token> and Content-Type: application/json.
Use the supSearchMpn(q: "<search string>", limit: n) query, e.g. { supSearchMpn(q: "SN74S74N", limit: 3) { hits results { part { mpn manufacturer { name } } } } } — q is required; omitting it returns a bad-request error.
Explore available return fields via the Nitro IDE's Schema Reference tab at https://api.nexar.com/graphql, since GraphQL only returns fields explicitly named in the query body.
Known gotchas
Access tokens expire after 24 hours and must be cached/refreshed; token requests are rate-limited (2/sec, 200/15min, 3,000/12h, 40,000/week).
supSearchMpn does partial/fuzzy MPN matching (returns many results); use supMultiMatch for exact MPN matches.
The free Evaluation plan is capped at a lifetime 100 matched parts; every part returned counts against the org's monthly part limit.
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