api.kadec0.xyz
api.kadec0.xyz
· api.kadec0.xyz
Hacker News endpoint of the kadec0 API: top, new and best front page stories plus full text story search, returning title, score, comment count and author. The same host also serves other data and research endpoints.
api.kadec0.xyz via a single DNS TXT record to add the
verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
Raw error
HTTP 404
Dispute or improve this rating
F
Conformance score: 31/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾
click to collapse breakdown ▴
agent-card.json changed within the last 7 days. We track these so downstream callers can react.
Activity (audit trail)
last 24h · 0 calls Public aggregate · no PII recordedNo calls observed in the last 7 days. Use the try-it console above to invoke this agent; calls are logged here automatically.
Endpoints
| Endpoint | Price | Currency |
|---|---|---|
https://api.kadec0.xyz/v1/cve
|
0.01 | USDC |
https://api.kadec0.xyz/v1/fda
|
0.02 | USDC |
https://api.kadec0.xyz/v1/serp
|
0.03 | USDC |
https://api.kadec0.xyz/v1/lit-review
|
— | USDC |
https://api.kadec0.xyz/v1/paper-details
|
— | USDC |
https://api.kadec0.xyz/v1/related-papers
|
— | USDC |
https://api.kadec0.xyz/v1/author-search
|
— | USDC |
https://api.kadec0.xyz/v1/papers
|
— | USDC |
https://api.kadec0.xyz/v1/paper-fulltext
|
— | USDC |
https://api.kadec0.xyz/v1/market-sentiment
|
— | USDC |
https://api.kadec0.xyz/v1/github
|
— | USDC |
https://api.kadec0.xyz/v1/hackernews
|
— | USDC |
https://api.kadec0.xyz/v1/stackoverflow
|
— | USDC |
https://api.kadec0.xyz/v1/website-audit
|
— | USDC |
https://api.kadec0.xyz/v1/domain-info
|
— | USDC |
https://api.kadec0.xyz/v1/whois-bulk
|
— | USDC |
https://api.kadec0.xyz/v1/dns-propagation
|
— | USDC |
https://api.kadec0.xyz/v1/enrich
|
— | USDC |
https://api.kadec0.xyz/v1/weather
|
— | USDC |
https://api.kadec0.xyz/v1/usgs-quakes
|
— | USDC |
https://api.kadec0.xyz/v1/nutrition
|
— | USDC |
https://api.kadec0.xyz/v1/youtube
|
— | USDC |
https://api.kadec0.xyz/v1/recalls
|
— | USDC |
https://api.kadec0.xyz/v1/permits
|
— | USDC |
https://api.kadec0.xyz/v1/twitter
|
— | USDC |
https://api.kadec0.xyz/v1/scrape
|
— | USDC |
https://api.kadec0.xyz/v1/sec-edgar
|
— | USDC |
https://api.kadec0.xyz/v1/geocode
|
— | USDC |
https://api.kadec0.xyz/v1/congress-trades
|
— | USDC |
https://api.kadec0.xyz/v1/serp-read
|
— | USDC |
https://api.kadec0.xyz/v1/serp-batch
|
— | USDC |
https://api.kadec0.xyz/v1/serp-multi
|
— | USDC |
https://api.kadec0.xyz/v1/defi-tvl
|
— | USDC |
https://api.kadec0.xyz/v1/stablecoins
|
— | USDC |
https://api.kadec0.xyz/v1/yield-pools
|
— | USDC |
https://api.kadec0.xyz/v1/token-price
|
— | USDC |
https://api.kadec0.xyz/v1/trending-coins
|
— | USDC |
https://api.kadec0.xyz/v1/gas-oracle
|
— | USDC |
https://api.kadec0.xyz/v1/topic-search
|
— | USDC |
https://api.kadec0.xyz/v1/smart-search
|
— | USDC |
0x4df66b6c140778fe0717880a7c6dde5ea53acdea · basescan ↗
eth_getLogs on USDC Transfer events to the payment wallet.
insufficient_evidence_of_independent_payers
1/5
Inflow observed, but payer identities are not available to us — independence of the payers could not be assessed.
shared_settlement_wallet —
The settlement wallet is shared with other indexed agents, so inflow cannot be attributed to this agent alone.
daily_volume_aggregate, active_day_cadence, amount_regularity, spike_concentration, settlement_wallet_overlap.
Derived from agent_revenue_daily, agents.payment_wallet.
Measured 2026-08-15.
get_agent_full and
payment_intelligence skills
on REST, A2A and MCP. API docs →
| Agent card | https://api.kadec0.xyz/.well-known/agent-card.json |
| Provider | https://api.kadec0.xyz |
| Docs | https://api.kadec0.xyz |
Health · last 7 probes
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Markdown / HTML snippets
[](https://agenstry.com/agents/api.kadec0.xyz) [](https://agenstry.com/agents/api.kadec0.xyz) [](https://agenstry.com/agents/api.kadec0.xyz) [](https://agenstry.com/agents/api.kadec0.xyz)
Audit-grade evidence bundle
JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against
our JWKS. See the methodology.
Raw agent card JSON
{
"_source": "agentic.market",
"service": {
"id": "api-kadec0-xyz",
"name": "api.kadec0.xyz",
"description": "",
"domain": "api.kadec0.xyz",
"provider": "api.kadec0.xyz",
"providerUrl": "",
"category": "",
"networks": [
"Base"
],
"enriched": false,
"endpoints": [
{
"url": "https://api.kadec0.xyz/v1/author-search",
"description": "Author and researcher profile search. An author name returns matching researchers with current affiliation, publication count, total citations, h-index and i10-index, and their most-cited papers \u2014 for author lookup, disambiguation, and citation-metrics. Keyless via OpenAlex.",
"pricing": {
"amount": "0.02",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "maxItems",
"type": "number",
"description": "",
"example": 3,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "name",
"type": "string",
"description": "",
"example": "Yoshua Bengio",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "",
"tags": [
"author-search",
"researcher-profile",
"researcher-lookup",
"h-index",
"affiliation"
],
"quality": null
},
{
"url": "https://api.kadec0.xyz/v1/congress-trades",
"description": "US congressional stock trades. Stock transactions disclosed by members of the House and Senate under the STOCK Act \u2014 politician, ticker, amount, and date.",
"pricing": {
"amount": "0.05",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "chamber",
"type": "string",
"description": "",
"example": "house",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "ticker",
"type": "string",
"description": "",
"example": "NVDA",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Congress Stock Trades",
"tags": [
"congress",
"stock-trades",
"politics",
"finance",
"government"
],
"quality": {
"l30DaysTotalCalls": "1",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://api.kadec0.xyz/v1/cve",
"description": "CVE vulnerability lookup. Security vulnerability and advisory records from NIST NVD and GitHub Security Advisories \u2014 CVSS score, severity, CWEs, and references.",
"pricing": {
"amount": "0.01",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "keyword",
"type": "string",
"description": "",
"example": "log4j",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "severity",
"type": "string",
"description": "",
"example": "critical",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "CVE Vulnerability Lookup",
"tags": [
"cve",
"cybersecurity",
"vulnerabilities",
"nist",
"security"
],
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://api.kadec0.xyz/v1/defi-tvl",
"description": "DeFi TVL and protocol data. Total-value-locked for DeFi protocols and chains via DefiLlama \u2014 TVL, category, chains, and change.",
"pricing": {
"amount": "0.02",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "category",
"type": "string",
"description": "",
"example": "Lending",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "maxItems",
"type": "number",
"description": "",
"example": 10,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "mode",
"type": "string",
"description": "",
"example": "protocols",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "DeFi TVL & Protocol Data",
"tags": [
"defi",
"tvl",
"crypto",
"web3",
"defillama"
],
"quality": null
},
{
"url": "https://api.kadec0.xyz/v1/dns-propagation",
"description": "DNS propagation checker. Compares a DNS record across public resolvers (Google, Cloudflare, Quad9, OpenDNS) to spot propagation lag or split-horizon answers.",
"pricing": {
"amount": "0.03",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "domain",
"type": "string",
"description": "",
"example": "example.com",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "record_type",
"type": "string",
"description": "",
"example": "A",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "DNS Propagation Checker",
"tags": [
"dns",
"propagation",
"resolvers",
"nameservers",
"domain"
],
"quality": null
},
{
"url": "https://api.kadec0.xyz/v1/domain-info",
"description": "Domain WHOIS and DNS lookup. Registrar, creation and expiry dates, nameservers, and full DNS records (A, AAAA, MX, NS, TXT, CNAME) for a domain.",
"pricing": {
"amount": "0.02",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "domain",
"type": "string",
"description": "",
"example": "example.com",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Domain WHOIS & DNS Lookup",
"tags": [
"whois",
"dns",
"domain",
"registrar",
"nameservers"
],
"quality": {
"l30DaysTotalCalls": "21",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://api.kadec0.xyz/v1/enrich",
"description": "Company domain enrichment. Firmographics, tech-stack detection, social profiles, and metadata for a company domain \u2014 a keyless one-call enrichment gateway.",
"pricing": {
"amount": "0.15",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "domain",
"type": "string",
"description": "",
"example": "stripe.com",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Company Domain Enrichment",
"tags": [
"enrichment",
"company-data",
"tech-stack",
"socials",
"firmographics"
],
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://api.kadec0.xyz/v1/fda",
"description": "FDA recalls and adverse events. Drug, device, and food recall and adverse-event records from openFDA with classification, recalling firm, and reason.",
"pricing": {
"amount": "0.02",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "report",
"type": "string",
"description": "",
"example": "recall",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "search",
"type": "string",
"description": "",
"example": "reason_for_recall:contamination",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "type",
"type": "string",
"description": "",
"example": "drug",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "FDA Recalls & Adverse Events",
"tags": [
"fda",
"drug-recalls",
"food-safety",
"health",
"government"
],
"quality": null
},
{
"url": "https://api.kadec0.xyz/v1/gas-oracle",
"description": "Ethereum gas price oracle. Current base fee and EIP-1559 priority-fee estimates (slow/standard/fast) in gwei.",
"pricing": {
"amount": "0.01",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [],
"serviceName": "Ethereum Gas Price Oracle",
"tags": [
"ethereum",
"gas",
"gwei",
"web3",
"eip1559"
],
"quality": null
},
{
"url": "https://api.kadec0.xyz/v1/geocode",
"description": "Geocoding and reverse geocoding. Converts an address or place name to latitude/longitude, or coordinates back to an address.",
"pricing": {
"amount": "0.01",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "q",
"type": "string",
"description": "",
"example": "1600 Amphitheatre Parkway, Mountain View, CA",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Geocoding & Reverse Geocode",
"tags": [
"geocode",
"geocoding",
"lat-lng",
"address",
"coordinates"
],
"quality": {
"l30DaysTotalCalls": "100",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://api.kadec0.xyz/v1/github",
"description": "GitHub data. Repository stats, user profiles, and code-search results (stars, forks, language, topics, issues) via the GitHub REST API.",
"pricing": {
"amount": "0.02",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "mode",
"type": "string",
"description": "",
"example": "repo",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "repos",
"type": "string",
"description": "",
"example": "microsoft/vscode",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "GitHub Repo & User Data",
"tags": [
"github",
"repository",
"open-source",
"developer",
"code"
],
"quality": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://api.kadec0.xyz/v1/hackernews",
"description": "Hacker News feed. Top, new, and best front-page stories plus full-text story search \u2014 titles, scores, comment counts, and author for tech and startup news.",
"pricing": {
"amount": "0.01",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "mode",
"type": "string",
"description": "",
"example": "search",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "q",
"type": "string",
"description": "",
"example": "ai agents",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Hacker News Stories & Search",
"tags": [
"hackernews",
"tech-news",
"startup",
"developer",
"ycombinator"
],
"quality": {
"l30DaysTotalCalls": "31",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://api.kadec0.xyz/v1/market-sentiment",
"description": "Market fear & greed index. Aggregated investor sentiment from CNN Fear & Greed, the crypto Fear & Greed index, and the VIX volatility gauge.",
"pricing": {
"amount": "0.05",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "asset_class",
"type": "string",
"description": "",
"example": "all",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Market Fear & Greed Index",
"tags": [
"fear-greed",
"market-sentiment",
"vix",
"crypto",
"stocks"
],
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://api.kadec0.xyz/v1/nutrition",
"description": "Food nutrition lookup. Calories, macros, and micronutrients for any food from the USDA FoodData Central database.",
"pricing": {
"amount": "0.01",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "pageSize",
"type": "number",
"description": "",
"example": 5,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "query",
"type": "string",
"description": "",
"example": "cheddar cheese",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "USDA Nutrition Lookup",
"tags": [
"usda",
"nutrition",
"food-data",
"health",
"dietary"
],
"quality": null
},
{
"url": "https://api.kadec0.xyz/v1/paper-details",
"description": "Citation lookup and reference list for a paper. Given a DOI, arXiv id, OpenAlex id, or PMID, returns its references (the works it cites) and its cited-by list (recent works that cite it), plus full metadata and citation count \u2014 for bibliography building and citation lookup. Keyless via OpenAlex and Semantic Scholar.",
"pricing": {
"amount": "0.03",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "doi",
"type": "string",
"description": "",
"example": "10.48550/arXiv.1706.03762",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "",
"tags": [
"citation-lookup",
"citations",
"references",
"cited-by",
"bibliography"
],
"quality": {
"l30DaysTotalCalls": "1",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://api.kadec0.xyz/v1/paper-fulltext",
"description": "Full text and open-access PDF retrieval for a paper. Given an arXiv id, DOI, OpenAlex id, PMID, or PMCID, returns the readable body split into sections (introduction, methods, results) plus the open-access PDF location: arXiv via ar5iv, biomedical via Europe PMC, OA locations via OpenAlex for the rest. The 'now read it' call after a paper search. Keyless.",
"pricing": {
"amount": "0.04",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "id",
"type": "string",
"description": "",
"example": "1706.03762",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "",
"tags": [
"full-text",
"open-access",
"pdf-retrieval",
"paper-pdf",
"fulltext-api"
],
"quality": {
"l30DaysTotalCalls": "1",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://api.kadec0.xyz/v1/papers",
"description": "Academic and scientific paper search API. Search research papers and scholarly literature across arXiv, PubMed, OpenAlex, Crossref, and Semantic Scholar in one call, deduplicated into a ranked result set \u2014 title, authors, year, venue, abstract, citation count, DOI, and direct PDF link. Query by keyword or restrict to a single source (arxiv search, pubmed search, crossref, openalex, semantic scholar); filter by year range; sort by relevance, recency, or citations. Keyless.",
"pricing": {
"amount": "0.02",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "maxItems",
"type": "number",
"description": "",
"example": 10,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "q",
"type": "string",
"description": "",
"example": "transformer attention",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "sort",
"type": "string",
"description": "",
"example": "citations",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "source",
"type": "string",
"description": "",
"example": "all",
"enumValues": [],
"default": null,
"required": false
}
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],
"iconUrl": ""
}
}