Score a text against a form

Paste a poem, pick a form, and the verifiers score it: meter from a pronouncing dictionary named by version in the answer, rhyme, line and syllable counts, then the gates (an exact line count, a content floor, no credit for identical end words, a floor under every dimension). The same text gets the same answer every time, and the answer is a signed record. This page calls api.s2ar.dev from your browser on today’s free samples (three a day, up to 4,000 characters) or on your own key; after the samples, the answer is the 402 quote an agent would pay, with the ways to pay it.

An agent calls the same route with curl -X POST https://api.s2ar.dev/v1/score -d '{"text":…,"form":…}', or the score_text tool over MCP. The worked version is Score a sonnet.