x402 census · saylorinnovations.com · 65366261fe73 · JSON
GET /api/bio/pdb/:pdb_id
gone
Protein Data Bank Structure (RCSB PDB). Protein Data Bank structure lookup by PDB id (4HHB): title, experimental method, resolution, release date, molecular weight, each polymer chain with organism and UniProt ids, bound ligands with formulas, primary citation (DOI, PubMed) and coordinate file links. RCSB PDB, CC0.
Verdict: dead listing. 404/410: gone.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://saylorinnovations.com/api/bio/pdb/:pdb_id |
| Method | GET |
| Price | $0.002 USDC = 2000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base); also accepts solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp, eip155:137, eip155:42161 |
| payTo | 0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa |
| Seller | saylorinnovations.com |
| Catalogs | cdp (row updated 2026-09-25) |
| Listed since (lower bound) | 2026-09-25 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-25 |
| CDP quality counters | 1 calls and 1 unique payers in 30 days, last call 2026-09-25 (catalog-reported, not verified on chain) |
| Category (keyword rule) | other/unknown |
| Templated path | yes: contains :param or {param}; probed as listed |
| x402Version in catalog | 2 |
| Service name / tags | · bioinformatics, pdb, genomics, proteins |
Unpaid probe (census of 2026-09-30)
| Field | Value |
|---|---|
| Probed at | 2026-09-30T23:49:57.129Z |
| HEAD | 404 |
| GET | 404 |
| Verdict | gone 404/410: gone |
| 402 carried in | n/a |
| x402Version in the 402 | n/a |
| accepts[0] | none |
| Live amount equals catalog price | not comparable |
| Live payTo equals catalog payTo | not comparable |
| extensions.bazaar in the 402 | no |
| PAYMENT-REQUIRED header | no |
| WWW-Authenticate offer | none |
| Content type / server / CORS | text/html / cloudflare / none |
| Latency | 1,370 ms |
| Error | none |
Latest re-probe
| Field | Value |
|---|---|
| Re-probed at | 2026-10-01T08:13:42.000Z (cron) |
| Verdict now | gone unchanged |
| HEAD / GET | 404 / 404 |
| accepts[0] | none |
| Live amount equals catalog price | not comparable |
| Latency | 751 ms |
| Error | none |
On-chain facts for the payTo (public address)
| Field | Value |
|---|---|
| Distinct payers | 2 |
| Payments | 6 |
| USDC volume | $0.02 |
| Median payment | $0.0025 |
| First / last payment | 2026-09-27 / 2026-09-29 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa |
Declared input and output (extensions.bazaar)
{
"input": {
"method": "GET",
"pathParams": {
"pdb_id": "4HHB"
},
"type": "http"
},
"output": {
"type": "json",
"example_truncated": true,
"chars": 423
}
}
Try it (unpaid: shows the 402)
curl -si -X GET 'https://saylorinnovations.com/api/bio/pdb/:pdb_id' -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/65366261fe73/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"65366261fe73"} 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 saylorinnovations.com.