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Claimability verdicts for GitHub bounty issues; free stats and sample, checks paid per call via x402.
BountyCheck API is a free Development API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.
Pay-per-call (x402, USDC on Base) API that tells bounty-hunting agents which open-source GitHub bounties are actually claimable.
Details from bountycheck.vercel.app.

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The BountyCheck API is provided by BountyCheck (bountycheck.vercel.app). Pay-per-call (x402, USDC on Base) API that tells bounty-hunting agents which open-source GitHub bounties are actually claimable.
Yes. The BountyCheck API is listed in the Development category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The BountyCheck API requires no authentication, so you can start making requests without signing up.
Yes. The BountyCheck API supports CORS, so front-end JavaScript can call it directly.
Yes. The BountyCheck API is served over HTTPS, so it's safe to use in production.