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💰 Paid API

x402-domain-check.vercel.app

x402-domain-check.vercel.app · x402-domain-check.vercel.app

FDA recall / enforcement reports (openFDA) for drugs, devices or food, searched by keyword across product, reason and firm, newest first: classification (Class I-III), status, firm, product, reason, distribution, dates. Not charged on errors.

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Conformance
60/100
grade C · 3 of 9 criteria apply
Uptime
not graded
catalogue listing · no agent card to probe
Observed inflow · 30d
$0.17
9 tx · on-chain
Invocations · 7d
0
no calls observed
Listing drift · 7d
stable
4 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

C
Conformance score: 60/100
Catalogue listing, not an A2A agent: a paid API listed by agentic.market. Scored on the 3 criteria that apply (24 of 40 points, scaled to 100); the A2A card criteria do not apply.
Show breakdown Hide breakdown
partial Live endpoint 15/25
Our probe received an HTTP 402 payment challenge from the host: live, but paid.
partial Verified Identity 5/10
Provider declared: x402-domain-check.vercel.app (https://x402-domain-check.vercel.app). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs
pass Freshness + modern flags 4/5
seen in upstream source within 0d
n/a Agent card · Protocol version · JWS signature · Uptime track record · Skill declaration · Security declaration

Activity

last 24h · 0 invocations No personal data recorded

No activity in the last 7 days.

Listing history

4 snapshots drifted 3×
Snapshots
Agent card snapshots
Captured Hash Snapshot
2026-11-04 04:43:14 current aaa0a3216f4e… view →
2026-10-30 00:57:28 7ca60701917c… view →
2026-10-28 15:15:19 03f02e5eaa9d… view →
2026-10-27 05:00:55 c4877bb5febb… view →

Endpoints

Browse x402 resources on this host

Pricing x402 on Base USDC Verified live · 402 challenge
From $0.0200 per call
Endpoint Price Currency
https://x402-domain-check.vercel.app/fda/drug
Base · live 402
0.02 USDC
https://x402-domain-check.vercel.app/fda/recalls
Base · live 402
0.02 USDC
https://x402-domain-check.vercel.app/sec/company
Base · live 402
0.02 USDC
https://x402-domain-check.vercel.app/domain/check
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/federal/awards
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/trials/search
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/fda/adverse-events
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/pubmed/search
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/sanctions/search
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/sec/insiders
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/econ/treasury
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/census/area
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/providers/npi
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/drugs/price
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/buyers/award-history
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/opportunities/search
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/opportunities/changes
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/codes/icd10
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/codes/hcpcs
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/medicare/fee-schedule
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/security/vulns
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/hospitals/ratings
Base · declared in manifest
— USDC
https://x402-domain-check.vercel.app/grants/search
Base · declared in manifest
— USDC
Settlement wallet: 0x94d642596761470161b37771fac222111a5ffad6 on Base · basescan ↗
Listed by facilitators Coinbase CDP · 20
Observed on-chain inflow verified on-chain
Last 7d
$0.00
0 transfers · synced 2026-11-13
Last 30d
$0.17
9 transfers · synced 2026-11-13
USDC on Base. Inflow to a wallet, not proof that every transfer was a paid call.
How it was settled and checked
$0.09 in the ledger, not classified yet.
Cross-check: Coinbase's Bazaar reports 24 calls in 30 days across 20 resources; we observed 5 transfers (0 facilitator-settled) over 28 of 30 scanned days. Neither counter is assumed correct.
Reproducible via eth_getLogs on USDC Transfer events to the wallet. How we classify
Rolling 30-day inflow
2026-10-31 2026-11-15
Peak: $0.17
Payment authenticity How we measure this →
Concentrated payers 3/5

Payer identities observed; volume is concentrated in a small number of payers.

$0.17 assessed 9 transactions 3/29 days active · 30d window Payer identities available
A low label reflects what we can observe, not a finding about the operator.
How this was checked
0 evidence caveats · measured 2026-11-14.
Checks: daily volume aggregate, active day cadence, amount regularity, spike concentration, settlement wallet overlap, payer uniqueness, payer concentration, payer recurrence, payer payee overlap.
Sources: agent revenue daily, agents payment wallet, agent payment transactions.
Payer concentration and 7 / 30 / 90-day windows: wallet_intel, payment_intelligence · included in Pro
Agent cardhttps://x402-domain-check.vercel.app
Providerhttps://x402-domain-check.vercel.app
Docshttps://x402-domain-check.vercel.app
Discovered via
agentic market cdp discovery

Health · last 3 probes

Probe log
When HTTP Live JSON-RPC Latency
2026-11-10 11:28:54 404 — —
2026-11-03 05:08:17 404 — —
2026-10-27 05:07:24 404 — —

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Embed a badge

Updates itself and links back here.

Agenstry grade Uptime
[![Agenstry grade](https://agenstry.com/badge/x402-domain-check.vercel.app.svg)](https://agenstry.com/agents/x402-domain-check.vercel.app)
[![Verified Business](https://agenstry.com/badge/x402-domain-check.vercel.app/identity.svg)](https://agenstry.com/agents/x402-domain-check.vercel.app)
[![Uptime](https://agenstry.com/badge/x402-domain-check.vercel.app/uptime.svg)](https://agenstry.com/agents/x402-domain-check.vercel.app)
[![A2A version](https://agenstry.com/badge/x402-domain-check.vercel.app/protocol.svg)](https://agenstry.com/agents/x402-domain-check.vercel.app)

Audit evidence

JSON for vendor reviews. Signed copy verifies against our JWKS.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON
{
  "_source": "agentic.market",
  "service": {
    "id": "x402-domain-check-vercel-app",
    "name": "x402-domain-check.vercel.app",
    "description": "",
    "domain": "x402-domain-check.vercel.app",
    "provider": "x402-domain-check.vercel.app",
    "providerUrl": "",
    "category": "",
    "networks": [
      "Base"
    ],
    "enriched": false,
    "endpoints": [
      {
        "url": "https://x402-domain-check.vercel.app/buyers/award-history",
        "description": "Procurement intelligence: prior awards and top recipients for a US federal buyer agency (e.g. Department of Education), optionally narrowed by sub-agency, keywords and NAICS, contracts and/or grants, over the last 1-5 years. Shows who wins this buyer's business, award sizes, periods and USAspending links. Data: USAspending.gov. Not charged on errors or unknown agency.",
        "pricing": {
          "amount": "0.05",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "agency",
            "type": "string",
            "description": "",
            "example": "Department of Education",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "keywords",
            "type": "string",
            "description": "",
            "example": "software",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "limit",
            "type": "number",
            "description": "",
            "example": 10,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "type",
            "type": "string",
            "description": "",
            "example": "contracts",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "years",
            "type": "number",
            "description": "",
            "example": 3,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://x402-domain-check.vercel.app/census/area",
        "description": "U.S. area demographics for a street address (Census geocoder -> tract, place, ZIP area, county) or a 5-digit ZIP: population, median age, household and per-capita income, home value, rent, poverty, unemployment, bachelor's-or-higher and owner-occupied rates from the American Community Survey. Not charged on errors.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "zip",
            "type": "string",
            "description": "",
            "example": "94103",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://x402-domain-check.vercel.app/codes/hcpcs",
        "description": "HCPCS Level II code search (supplies, DME, drugs, ambulance, etc.) by words or code: short and long descriptions, obsolete / not-otherwise-classified flags, add and termination dates. CPT (Level I) is AMA-copyrighted and not included. Data: CMS via NLM Clinical Tables. Not charged on errors.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "limit",
            "type": "number",
            "description": "",
            "example": 10,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "q",
            "type": "string",
            "description": "",
            "example": "wheelchair",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://x402-domain-check.vercel.app/codes/icd10",
        "description": "ICD-10-CM diagnosis code search for medical billing/coding: search by words or code prefix (e.g. 'type 2 diabetes' or 'E11') and get matching codes with official descriptions. Data: CDC/NCHS ICD-10-CM via NLM Clinical Tables. Not charged on errors.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "limit",
            "type": "number",
            "description": "",
            "example": 10,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "q",
            "type": "string",
            "description": "",
            "example": "type 2 diabetes",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://x402-domain-check.vercel.app/domain/check",
        "description": "Domain availability check via RDAP: registered/available, registrar, dates, nameservers",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "name",
            "type": "string",
            "description": "",
            "example": "example.com",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        }
      },
      {
        "url": "https://x402-domain-check.vercel.app/drugs/price",
        "description": "US drug acquisition cost from CMS NADAC (National Average Drug Acquisition Cost, weekly): search by drug name (brand or generic, optional strength) or by NDC. Returns latest NADAC per unit, pricing unit (EA/ML/GM), effective date, generic vs brand, OTC flag and the corresponding generic price for brands. Names not found in NADAC descriptions are resolved to NDCs via the openFDA NDC directory. Pharmacy acquisition cost, not patient cash price. Not charged on errors.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "limit",
            "type": "number",
            "description": "",
            "example": 5,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "name",
            "type": "string",
            "description": "",
            "example": "lipitor",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://x402-domain-check.vercel.app/econ/treasury",
        "description": "U.S. Treasury economic data: daily par yield curve (yields), total public debt (debt), average interest rates on Treasury securities (interest-rates), or Treasury reporting exchange rates by country (fx). Latest observations first. Not charged on errors.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "dataset",
            "type": "string",
            "description": "",
            "example": "yields",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "limit",
            "type": "number",
            "description": "",
            "example": 5,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://x402-domain-check.vercel.app/fda/adverse-events",
        "description": "FDA adverse event (FAERS) summary for a drug via openFDA: total and serious report counts, top reported reactions with counts, reaction outcomes (incl. fatal). Unverified voluntary reports; not causation. Not charged on errors.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "drug",
            "type": "string",
            "description": "",
            "example": "semaglutide",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "limit",
            "type": "number",
            "description": "",
            "example": 10,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://x402-domain-check.vercel.app/fda/drug",
        "description": "FDA drug label lookup (openFDA SPL): brand/generic names, manufacturer, pharmacologic class, indications, boxed warning, warnings, contraindications, dosage, adverse reactions, DailyMed link. Not charged on errors.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "limit",
            "type": "number",
            "description": "",
            "example": 3,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "name",
            "type": "string",
            "description": "",
            "example": "ibuprofen",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://x402-domain-check.vercel.app/fda/recalls",
        "description": "FDA recall / enforcement reports (openFDA) for drugs, devices or food, searched by keyword across product, reason and firm, newest first: classification (Class I-III), status, firm, product, reason, distribution, dates. Not charged on errors.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "limit",
            "type": "number",
            "description": "",
            "example": 10,
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "q",
            "type": "string",
            "description": "",
            "example": "listeria",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "type",
            "type": "string",
            "description": "",
            "example": "food",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "3"
        }
      },
      {
        "url": "https://x402-domain-check.vercel.app/federal/awards",
        "description": "US federal contracts & grants lookup by company name (USAspending.gov): matched recipients/UEI, total contract and grant obligations, counts, top awards. Not charged if upstream fails.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "company",
            "type": "string",
            "description": "",
            "example": "Lockheed Martin",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "limit",
            "type": "number",
            "description": "",
            "example": 10,
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://x402-domain-check.vercel.app/medicare/fee-schedule",
        "description": "Medicare Physician Fee Schedule allowed amount for a CPT/HCPCS code in a payment locality (or national): non-facility and facility prices per modifier (global, 26, TC) and conversion factor, RVUs, GPCIs, status and global days. Codes and prices only; CPT descriptors (AMA copyright) omitted. Data: CMS PFS. Not charged on errors.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "code",
            "type": "string",
            "description": "",
            "example": "99213",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "locality",
            "type": "string",
            "description": "",
            "example": "SEATTLE",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://x402-domain-check.vercel.app/opportunities/changes",
        "description": "Material changes to tracked RFP/grant opportunities since a timestamp: deadline moves, budget changes, new amendments, new Q&A, new certification/eligibility requirements, status and attachment changes. Pass up to 10 opportunity keys from /opportunities/search (grants:<id> or sam:<noticeId>). Uses our stored snapshots (SAM.gov only serves the latest version) plus Grants.gov revision metadata. Not charged on errors.",
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          "network": "eip155:8453",
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        "description": "PubMed literature search (NCBI E-utilities): citations with PMID, title, authors, journal, date, publication types, DOI, PMC id and link. Supports PubMed query syntax. Not charged on errors.",
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          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
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        },
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        "providerName": "",
        "parameters": [
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      },
      {
        "url": "https://x402-domain-check.vercel.app/sanctions/search",
        "description": "OFAC sanctions screening: fuzzy name search across the U.S. Treasury SDN and Consolidated (non-SDN) lists incl. aliases. Returns scored matches with programs, type, aliases, remarks. Lists refreshed daily. Screening aid only. Not charged on errors.",
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          "currency": "USDC",
          "network": "eip155:8453",
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          "maxAmount": "",
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        },
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            "example": 0.85,
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            "default": null,
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        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
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      {
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        "description": "SEC EDGAR company lookup by ticker, name or CIK: CIK, legal name, tickers/exchanges, SIC industry, state of incorporation, address, latest XBRL key facts (revenue, net income, assets, equity, shares outstanding, public float) and recent filings with links. Not charged on errors.",
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          "network": "eip155:8453",
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          "minAmount": ""
        },
        "method": "GET",
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        "parameters": [
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        "tags": [],
        "quality": {
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      },
      {
        "url": "https://x402-domain-check.vercel.app/sec/insiders",
        "description": "SEC Form 4 insider trading summary for a company (ticker, name or CIK): recent Form 4 filings parsed into insider name, role and non-derivative transactions (code, shares, price, holdings after), with open-market buy/sell totals. Not charged on errors.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
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      {
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        "description": "Clinical trials search (ClinicalTrials.gov, NLM): filter by condition, intervention/drug, sponsor, status, location. Returns NCT id, title, status, phase, conditions, interventions, sponsor, enrollment, dates, locations summary, link. Not charged on errors.",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
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            "example": "pembrolizumab",
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            "example": 5,
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            "description": "",
            "example": "RECRUITING",
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        "tags": [],
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    "isNew": false,
    "priceSummary": {
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      "avgCostPerTransaction": "0.024",
      "avgCostBasis": "exact",
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}