Get an API key

Free tier, no card. We email a link to confirm the address, then issue your key.

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Pre-launch. Coverage is 37 residential tariffs across 21 utilities. Estimates exclude medical baseline, FERA, annual true-up and non-bypassable charges. Read the terms before relying on any output.

Already have a key? Check usage with GET /usage. Keys are stored hashed and shown once, so a lost key cannot be looked up — request a new one and the old is revoked.