x402 census · flat-rate-llm.kikoribera03.workers.dev · 54c987214eb8 · JSON
GET /v1/content/riddle
unprobed
One riddle by difficulty, in English or Spanish, with the answer AND the SHA-256 of the answer in lowercase. The hash is the point: an agent can check whether its guess is right without reading the solution first, which no other riddle endpoint lets you do.
Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://flat-rate-llm.kikoribera03.workers.dev/v1/content/riddle |
| Method | GET |
| Price | $0.005 USDC = 5000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base); also accepts eip155:137, eip155:42161 |
| payTo | 0xc210Ea7D5692a6401ADf25BbCB7aCDe9cDB7e9Ff |
| Seller | flat-rate-llm.kikoribera03.workers.dev |
| Catalogs | cdp (row updated 2026-09-30) |
| Listed since (lower bound) | 2026-09-30 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-30 |
| CDP quality counters | 2 calls and 1 unique payers in 30 days, last call 2026-09-30 (catalog-reported, not verified on chain) |
| Category (keyword rule) | inference/llm |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | Riddle with checkable answer · riddle, puzzle, brain teaser, quiz, riddle answer |
Unpaid probe (census of )
| Field | Value |
|---|---|
| Probe | not probed in this build |
No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.
On-chain facts for the payTo (public address)
| Field | Value |
|---|---|
| Distinct payers | 1 |
| Payments | 1 |
| USDC volume | $0.005 |
| Median payment | $0.005 |
| First / last payment | 2026-09-30 / 2026-09-30 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0xc210Ea7D5692a6401ADf25BbCB7aCDe9cDB7e9Ff |
Declared input and output (extensions.bazaar)
{
"input": {
"method": "GET",
"queryParams": {
"difficulty": "medium",
"language": "en"
},
"type": "http"
},
"output": {
"type": "json",
"example": {
"answer": "An echo",
"answerSha256": "0x...",
"difficulty": "medium",
"howToCheck": "sha256(lowercased, trimmed guess) === answerSha256",
"id": "r3",
"riddle": "I speak without a mouth and hear without ears. I have nobody, but I come alive with wind. What am I?"
}
}
}
Try it (unpaid: shows the 402)
curl -si -X GET 'https://flat-rate-llm.kikoribera03.workers.dev/v1/content/riddle' -H 'accept: application/json'
The catalog declares GET. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.
Paid checks (x402, USDC on Base)
GET https://bazaar.agentexchange.work/r/54c987214eb8/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"54c987214eb8"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.
Catalog references: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on flat-rate-llm.kikoribera03.workers.dev.