85
💰 Paid API
api.kadec0.xyz
api.kadec0.xyz
· api.kadec0.xyz
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 — 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.
🛡
Own this agent?
Verify the domain
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.
🔔
Watch this agent for changes.
Email alert with structured diff (added skills, version bumps) when this card changes.
Enterprise feature.
Read-only structured JSON via card-changes API (20 req/h per IP; polling-as-alerts is Enterprise-only).
Sign in to subscribe
Trust score
19/100
grade F · 9 criteria
Uptime
accumulating
1/5 probes
Revenue · 30d
$0.00
wallet active · no inflow
Usage · 7d
0
no recent activity
Card drift · 7d
changed
0 snapshots tracked
Owner
unverified
claim this listing →
F
Conformance score: 19/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾
click to collapse breakdown ▴
F
Conformance score: 19/100
F-grade: card is reachable but fails most operational signals.
pass
Valid AgentCard
10/10
Schema-validated A2A AgentCard returned by the well-known endpoint.
info
Live JSON-RPC
0/25
Live probe hasn't run yet.
fail
Protocol version
0/10
No protocolVersion in card.
How to earn +10 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to the AgentCard root. Without it, callers can't negotiate v0.x vs v1.0 compatibility.
Docs →
info
JWS signature
0/10
Card is unsigned (most published agents are).
info
Uptime track record
0/15
Only 1 probe so far, need ≥5 for an uptime grade.
fail
Skill declaration
0/10
No skills declared in card. Hard to route to.
How to earn +10 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
partial
Verified Identity
5/10
Provider declared: api.kadec0.xyz (https://api.kadec0.xyz). 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
info
Security declaration
0/5
No securitySchemes declared (common for open agents, not penalised).
⚠ Card drift detected. This agent's
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.
Uptime
100.0%
1 probes
Response
0ms
last probe
Skills
0
declared
Streaming
—
SSE-capable
Endpoints
Pricing
x402 on Base
USDC
From $0.0050 per call
| Endpoint | Price | Currency |
|---|---|---|
https://api.kadec0.xyz/v1/author-search
|
0.02 | USDC |
https://api.kadec0.xyz/v1/congress-trades
|
0.05 | USDC |
https://api.kadec0.xyz/v1/cve
|
0.01 | USDC |
https://api.kadec0.xyz/v1/defi-tvl
|
0.02 | USDC |
https://api.kadec0.xyz/v1/dns-propagation
|
0.03 | USDC |
https://api.kadec0.xyz/v1/domain-info
|
0.02 | USDC |
https://api.kadec0.xyz/v1/enrich
|
0.15 | USDC |
https://api.kadec0.xyz/v1/fda
|
0.02 | USDC |
https://api.kadec0.xyz/v1/gas-oracle
|
0.01 | USDC |
https://api.kadec0.xyz/v1/geocode
|
0.01 | USDC |
https://api.kadec0.xyz/v1/github
|
0.02 | USDC |
https://api.kadec0.xyz/v1/hackernews
|
0.01 | USDC |
https://api.kadec0.xyz/v1/market-sentiment
|
0.05 | USDC |
https://api.kadec0.xyz/v1/nutrition
|
0.01 | USDC |
https://api.kadec0.xyz/v1/paper-details
|
0.03 | USDC |
https://api.kadec0.xyz/v1/paper-fulltext
|
0.04 | USDC |
https://api.kadec0.xyz/v1/papers
|
0.02 | USDC |
https://api.kadec0.xyz/v1/permits
|
0.03 | USDC |
https://api.kadec0.xyz/v1/recalls
|
0.02 | USDC |
https://api.kadec0.xyz/v1/related-papers
|
0.03 | USDC |
https://api.kadec0.xyz/v1/scrape
|
0.03 | USDC |
https://api.kadec0.xyz/v1/sec-edgar
|
0.05 | USDC |
https://api.kadec0.xyz/v1/serp
|
0.03 | USDC |
https://api.kadec0.xyz/v1/stablecoins
|
0.02 | USDC |
https://api.kadec0.xyz/v1/stackoverflow
|
0.01 | USDC |
https://api.kadec0.xyz/v1/token-price
|
0.01 | USDC |
https://api.kadec0.xyz/v1/trending-coins
|
0.01 | USDC |
https://api.kadec0.xyz/v1/usgs-quakes
|
0.005 | USDC |
https://api.kadec0.xyz/v1/weather
|
0.005 | USDC |
https://api.kadec0.xyz/v1/website-audit
|
0.08 | USDC |
https://api.kadec0.xyz/v1/whois-bulk
|
0.05 | USDC |
https://api.kadec0.xyz/v1/yield-pools
|
0.03 | USDC |
https://api.kadec0.xyz/v1/youtube
|
0.03 | USDC |
Try it ↗
Opens the operator's playground / docs in a new tab.
Settlement wallet:
0x4df66b6c140778fe0717880a7c6dde5ea53acdea · basescan ↗
| Agent card | https://api.kadec0.xyz |
| Provider | https://api.kadec0.xyz |
| Docs | https://api.kadec0.xyz |
Discovered via
agentic_market
Health · last 0 probes
Similar agents embedding-nearest
Embed your Agenstry badge
Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.
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": "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.",
"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": {
"l30DaysTotalCalls": "1",
"l30DaysUniquePayers": "1"
}
},
{
"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": "2",
"l30DaysUniquePayers": "2"
}
},
{
"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": "2"
}
},
{
"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": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
}
},
{
"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": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "3"
}
},
{
"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": "2",
"l30DaysUniquePayers": "2"
}
},
{
"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": "3",
"l30DaysUniquePayers": "3"
}
},
{
"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": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
}
},
{
"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": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "3"
}
},
{
"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": "3",
"l30DaysUniquePayers": "3"
}
},
{
"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": "2",
"l30DaysUniquePayers": "2"
}
},
{
"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": "2",
"l30DaysUniquePayers": "2"
}
},
{
"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": "2"
}
},
{
"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": {
"l30DaysTotalCalls": "4",
"l30DaysUniquePayers": "4"
}
},
{
"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": "3",
"l30DaysUniquePayers": "2"
}
},
{
"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": "3",
"l30DaysUniquePayers": "2"
}
},
{
"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
}
],
"serviceName": "Academic Paper Search",
"tags": [
"academic-search",
"scientific-paper-search",
"research-paper-api",
"scholarly-search",
"paper-search"
],
"quality": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://api.kadec0.xyz/v1/permits",
"description": "Building permit records. Construction and building permits across Chicago, NYC, Seattle, and San Francisco \u2014 type, status, address, cost, and issue date.",
"pricing": {
"amount": "0.03",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "city",
"type": "string",
"description": "",
"example": "sf",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "date_range",
"type": "string",
"description": "",
"example": "2024-01-01,2026-06-21",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "maxItems",
"type": "number",
"description": "",
"example": 5,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "permit_type",
"type": "string",
"description": "",
"example": "kitchen",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Building Permit Records",
"tags": [
"building-permits",
"construction",
"municipal",
"real-estate",
"government"
],
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://api.kadec0.xyz/v1/recalls",
"description": "Consumer product recalls. A normalized multi-agency recall feed spanning FDA, CPSC, and NHTSA \u2014 product, reason, company, classification, and severity.",
"pricing": {
"amount": "0.02",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "agency",
"type": "string",
"description": "",
"example": "all",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "limit",
"type": "number",
"description": "",
"example": 10,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "q",
"type": "string",
"description": "",
"example": "salmonella",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Consumer Product Recalls",
"tags": [
"consumer-recalls",
"cpsc",
"product-safety",
"nhtsa",
"government"
],
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://api.kadec0.xyz/v1/related-papers",
"description": "Literature review and related-paper discovery. Given a seed paper (arXiv id, DOI, or OpenAlex id) or a topic query, returns semantically similar and recommended scholarly papers to expand a reading list or systematic review, via Semantic Scholar recommendations with an OpenAlex related-works fallback. Keyless.",
"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
},
{
"group": "query",
"name": "maxItems",
"type": "number",
"description": "",
"example": 10,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "",
"tags": [
"literature-review",
"related-papers",
"similar-papers",
"paper-recommendations",
"systematic-review"
],
"quality": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://api.kadec0.xyz/v1/scrape",
"description": "Web page to clean markdown. Converts any URL into LLM-ready markdown plus structured metadata \u2014 a keyless alternative to Firecrawl.",
"pricing": {
"amount": "0.03",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "url",
"type": "string",
"description": "",
"example": "https://example.com",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Web Page to Markdown",
"tags": [
"scrape",
"markdown",
"web-content",
"crawler",
"extraction"
],
"quality": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://api.kadec0.xyz/v1/sec-edgar",
"description": "SEC EDGAR filing search. Full-text search of SEC filings (10-K, 10-Q, 8-K and more) by company, ticker, CIK, or keyword \u2014 company, form type, date, and document link.",
"pricing": {
"amount": "0.05",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "q",
"type": "string",
"description": "",
"example": "artificial intelligence",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "type",
"type": "string",
"description": "",
"example": "10-K",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "SEC EDGAR Filing Search",
"tags": [
"sec",
"edgar",
"financial-filings",
"stocks",
"finance"
],
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://api.kadec0.xyz/v1/serp",
"description": "Web search results (SERP). Keyless web search returning ranked title, URL, and snippet for a query.",
"pricing": {
"amount": "0.03",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "num_results",
"type": "number",
"description": "",
"example": 10,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "q",
"type": "string",
"description": "",
"example": "best python web scraping library",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Web Search (SERP)",
"tags": [
"web-search",
"serp",
"search-results",
"google-alt",
"duckduckgo"
],
"quality": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "3"
}
},
{
"url": "https://api.kadec0.xyz/v1/stablecoins",
"description": "Stablecoin supply data. Circulating supply of stablecoins across chains via DefiLlama \u2014 peg mechanism, peg currency, and per-chain breakdown.",
"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
}
],
"serviceName": "Stablecoin Supply Data",
"tags": [
"stablecoin",
"defi",
"crypto",
"web3",
"usdc"
],
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://api.kadec0.xyz/v1/stackoverflow",
"description": "Stack Overflow Q&A. Programming question and answer search with scores, accepted-answer flags, tags, and answer bodies via the Stack Exchange API.",
"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": "asyncio gather",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "tag",
"type": "string",
"description": "",
"example": "python",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Stack Overflow Q&A Search",
"tags": [
"stackoverflow",
"programming",
"qa",
"developer",
"code"
],
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://api.kadec0.xyz/v1/token-price",
"description": "Crypto token prices. Live price, market cap, volume, and 24h change for crypto tokens by id or symbol via CoinPaprika \u2014 keyless.",
"pricing": {
"amount": "0.01",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "ids",
"type": "string",
"description": "",
"example": "bitcoin,ethereum",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "vs",
"type": "string",
"description": "",
"example": "usd",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Crypto Token Price Data",
"tags": [
"crypto",
"token-price",
"market-data",
"web3",
"coinpaprika"
],
"quality": {
"l30DaysTotalCalls": "14",
"l30DaysUniquePayers": "14"
}
},
{
"url": "https://api.kadec0.xyz/v1/trending-coins",
"description": "Trending crypto coins. The coins most searched on CoinGecko right now, with rank, price, and market-cap rank.",
"pricing": {
"amount": "0.01",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "maxItems",
"type": "number",
"description": "",
"example": 7,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Trending Crypto Coins",
"tags": [
"crypto",
"trending",
"web3",
"market-data",
"coingecko"
],
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://api.kadec0.xyz/v1/usgs-quakes",
"description": "Real-time earthquake feed. Recent seismic events from USGS with magnitude, location, depth, and tsunami flag, filterable by magnitude, time, and radius.",
"pricing": {
"amount": "0.005",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "minmagnitude",
"type": "number",
"description": "",
"example": 4.5,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "starttime",
"type": "string",
"description": "",
"example": "2026-06-18",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "USGS Earthquake Feed",
"tags": [
"usgs",
"earthquakes",
"seismology",
"geological",
"government"
],
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://api.kadec0.xyz/v1/weather",
"description": "Weather forecast and air quality. Current conditions, a 16-day daily forecast, and air-quality (AQI, PM2.5, ozone) for any latitude and longitude.",
"pricing": {
"amount": "0.005",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "forecast_days",
"type": "number",
"description": "",
"example": 3,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "lat",
"type": "number",
"description": "",
"example": 52.52,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "lng",
"type": "number",
"description": "",
"example": 13.41,
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Weather Forecast & Air Quality",
"tags": [
"weather",
"forecast",
"air-quality",
"meteorology",
"climate"
],
"quality": {
"l30DaysTotalCalls": "31",
"l30DaysUniquePayers": "28"
}
},
{
"url": "https://api.kadec0.xyz/v1/website-audit",
"description": "Instant SEO/perf/a11y audit of a URL. params: url",
"pricing": {
"amount": "0.08",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "url",
"type": "string",
"description": "",
"example": "https://example.com",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Website SEO & Perf Audit",
"tags": [
"seo",
"website-audit",
"performance",
"accessibility",
"meta-tags"
],
"quality": {
"l30DaysTotalCalls": "1",
"l30DaysUniquePayers": "1"
}
},
{
"url": "https://api.kadec0.xyz/v1/whois-bulk",
"description": "Bulk WHOIS lookup. Registrar, dates, and nameservers for up to 10 domains in a single batch call.",
"pricing": {
"amount": "0.05",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "domains",
"type": "string",
"description": "",
"example": "example.com,google.com,github.com",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "Bulk WHOIS Lookup",
"tags": [
"whois",
"bulk",
"domain",
"registrar",
"batch"
],
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "2"
}
},
{
"url": "https://api.kadec0.xyz/v1/yield-pools",
"description": "DeFi yield and APY pools. Top yield-farming pools via DefiLlama \u2014 APY, TVL, chain, project, and asset, filterable to stablecoin pools.",
"pricing": {
"amount": "0.03",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "chain",
"type": "string",
"description": "",
"example": "Ethereum",
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "maxItems",
"type": "number",
"description": "",
"example": 10,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "minTvl",
"type": "number",
"description": "",
"example": 5000000,
"enumValues": [],
"default": null,
"required": false
},
{
"group": "query",
"name": "stablecoin",
"type": "string",
"description": "",
"example": "true",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "DeFi Yield & APY Pools",
"tags": [
"defi",
"yield",
"apy",
"crypto",
"web3"
],
"quality": {
"l30DaysTotalCalls": "4",
"l30DaysUniquePayers": "4"
}
},
{
"url": "https://api.kadec0.xyz/v1/youtube",
"description": "YouTube video metadata + best-effort transcript (keyless). params: video_id|url",
"pricing": {
"amount": "0.03",
"currency": "USDC",
"network": "eip155:8453",
"scheme": "exact",
"maxAmount": "",
"minAmount": ""
},
"method": "GET",
"providerName": "",
"parameters": [
{
"group": "query",
"name": "url",
"type": "string",
"description": "",
"example": "https://www.youtube.com/watch?v=dQw4w9WgXcg",
"enumValues": [],
"default": null,
"required": false
}
],
"serviceName": "YouTube Metadata & Transcript",
"tags": [
"youtube",
"video",
"transcript",
"metadata",
"captions"
],
"quality": {
"l30DaysTotalCalls": "1",
"l30DaysUniquePayers": "1"
}
}
],
"integrationType": "",
"isNew": false,
"priceSummary": {
"minAmount": "0.005",
"maxAmount": "0.15",
"avgCostPerTransaction": "0.029091",
"avgCostBasis": "exact",
"currency": "USDC"
},
"serviceName": "",
"tags": [
"author-search",
"researcher-profile",
"researcher-lookup",
"h-index",
"affiliation",
"congress",
"stock-trades",
"politics",
"finance",
"government",
"cve",
"cybersecurity",
"vulnerabilities",
"nist",
"security",
"defi",
"tvl",
"crypto",
"web3",
"defillama",
"dns",
"propagation",
"resolvers",
"nameservers",
"domain",
"whois",
"registrar",
"enrichment",
"company-data",
"tech-stack",
"socials",
"firmographics",
"fda",
"drug-recalls",
"food-safety",
"health",
"ethereum",
"gas",
"gwei",
"eip1559",
"geocode",
"geocoding",
"lat-lng",
"address",
"coordinates",
"github",
"repository",
"open-source",
"developer",
"code",
"hackernews",
"tech-news",
"startup",
"ycombinator",
"fear-greed",
"market-sentiment",
"vix",
"stocks",
"usda",
"nutrition",
"food-data",
"dietary",
"citation-lookup",
"citations",
"references",
"cited-by",
"bibliography",
"full-text",
"open-access",
"pdf-retrieval",
"paper-pdf",
"fulltext-api",
"academic-search",
"scientific-paper-search",
"research-paper-api",
"scholarly-search",
"paper-search",
"building-permits",
"construction",
"municipal",
"real-estate",
"consumer-recalls",
"cpsc",
"product-safety",
"nhtsa",
"literature-review",
"related-papers",
"similar-papers",
"paper-recommendations",
"systematic-review",
"scrape",
"markdown",
"web-content",
"crawler",
"extraction",
"sec",
"edgar",
"financial-filings",
"web-search",
"serp",
"search-results",
"google-alt",
"duckduckgo",
"stablecoin",
"usdc",
"stackoverflow",
"programming",
"qa",
"token-price",
"market-data",
"coinpaprika",
"trending",
"coingecko",
"usgs",
"earthquakes",
"seismology",
"geological",
"weather",
"forecast",
"air-quality",
"meteorology",
"climate",
"seo",
"website-audit",
"performance",
"accessibility",
"meta-tags",
"bulk",
"batch",
"yield",
"apy",
"youtube",
"video",
"transcript",
"metadata",
"captions"
],
"iconUrl": ""
}
}