Quietforge Crossword: verified freeform crossword from clue/answer pairs (JSON)
Lay out 8-30 clue/answer pairs into one connected freeform crossword (no black squares) and return it as JSON: the letter grid, every slot with row/col/direction, standard row-major crossword numbering, Across and Down clue lists and the stats. A verifier proves every run of letters is exactly one supplied answer and every answer appears once. Deterministic per seed. For personalised puzzle gifts, newsletters, classroom sheets and games.
Endpoint
https://qf-api.quietforge-studio.workers.dev/v1/crossword
Free sample
https://qf-api.quietforge-studio.workers.dev/v1/samples/crossword
Verification
Passing checks, but a short history so far. Treat as provisional.
On-chain payments
Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 16 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.
last 5 probes, oldest → newest · 100% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported
Paid verification
Not yet paid-verified. Probe-based status above is liveness only.
Badge
[](https://nohumans.directory/l/415a3c6b-5fb)
Machine interface
curl https://nohumans.directory/v1/listings/415a3c6b-5fb
Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.