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api.kadec0.xyz

Category: Service
Network
Avg / request: $0.005 – $0.15
Endpoints: 33

api.kadec0.xyz

Service overview

What is 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.

Level up your agent by giving it access to thousands of services. All payable per-request via x402. No API keys, no accounts.

Paste into your agentic chat and let your agent guide you.

Make a Call

Example request

npx awal x402 pay "https://api.kadec0.xyz/v1/author-search" \
  --query '{
  "maxItems": "{maxItems}",
  "name": "{name}"
}'

What you get back

{
  "endpoint": "GET /v1/author-search",
  "paid": true,
  "query": "best x402 data APIs",
  "result": [
    {
      "snippet": "Compact result summary.",
      "title": "Example result",
      "url": "https://example.com"
    }
  ]
}

API surface

Endpoints

33 crawlable routes

Parameters2

Parameter	Type	Default	Example
`maxItems`	number	`null`	`3`
`name`	string	`null`	`Yoshua Bengio`

Parameters2

Parameter	Type	Default	Example
`chamber`	string	`null`	`house`
`ticker`	string	`null`	`NVDA`

Parameters2

Parameter	Type	Default	Example
`keyword`	string	`null`	`log4j`
`severity`	string	`null`	`critical`

Parameters3

Parameter	Type	Default	Example
`category`	string	`null`	`Lending`
`maxItems`	number	`null`	`10`
`mode`	string	`null`	`protocols`

Parameters2

Parameter	Type	Default	Example
`domain`	string	`null`	`example.com`
`record_type`	string	`null`	`A`

Parameters1

Parameter	Type	Default	Example
`domain`	string	`null`	`example.com`

Parameters1

Parameter	Type	Default	Example
`domain`	string	`null`	`stripe.com`

Parameters3

Parameter	Type	Default	Example
`report`	string	`null`	`recall`
`search`	string	`null`	`reason_for_recall:contamination`
`type`	string	`null`	`drug`

Parameters1

Parameter	Type	Default	Example
`q`	string	`null`	`1600 Amphitheatre Parkway, Mountain View, CA`

Parameters2

Parameter	Type	Default	Example
`mode`	string	`null`	`repo`
`repos`	string	`null`	`microsoft/vscode`

Parameters2

Parameter	Type	Default	Example
`mode`	string	`null`	`search`
`q`	string	`null`	`ai agents`

Parameters1

Parameter	Type	Default	Example
`asset_class`	string	`null`	`all`

Parameters2

Parameter	Type	Default	Example
`pageSize`	number	`null`	`5`
`query`	string	`null`	`cheddar cheese`

Parameters1

Parameter	Type	Default	Example
`doi`	string	`null`	`10.48550/arXiv.1706.03762`

Parameters1

Parameter	Type	Default	Example
`id`	string	`null`	`1706.03762`

Parameters4

Parameter	Type	Default	Example
`maxItems`	number	`null`	`10`
`q`	string	`null`	`transformer attention`
`sort`	string	`null`	`citations`
`source`	string	`null`	`all`

Parameters4

Parameter	Type	Default	Example
`city`	string	`null`	`sf`
`date_range`	string	`null`	`2024-01-01,2026-06-21`
`maxItems`	number	`null`	`5`
`permit_type`	string	`null`	`kitchen`

Parameters3

Parameter	Type	Default	Example
`agency`	string	`null`	`all`
`limit`	number	`null`	`10`
`q`	string	`null`	`salmonella`

Parameters2

Parameter	Type	Default	Example
`doi`	string	`null`	`10.48550/arXiv.1706.03762`
`maxItems`	number	`null`	`10`

Parameters1

Parameter	Type	Default	Example
`url`	string	`null`	`https://example.com`

Parameters2

Parameter	Type	Default	Example
`q`	string	`null`	`artificial intelligence`
`type`	string	`null`	`10-K`

Parameters2

Parameter	Type	Default	Example
`num_results`	number	`null`	`10`
`q`	string	`null`	`best python web scraping library`

Parameters1

Parameter	Type	Default	Example
`maxItems`	number	`null`	`10`

Parameters3

Parameter	Type	Default	Example
`mode`	string	`null`	`search`
`q`	string	`null`	`asyncio gather`
`tag`	string	`null`	`python`

Parameters2

Parameter	Type	Default	Example
`ids`	string	`null`	`bitcoin,ethereum`
`vs`	string	`null`	`usd`

Parameters1

Parameter	Type	Default	Example
`maxItems`	number	`null`	`7`

Parameters2

Parameter	Type	Default	Example
`minmagnitude`	number	`null`	`4.5`
`starttime`	string	`null`	`2026-06-18`

Parameters3

Parameter	Type	Default	Example
`forecast_days`	number	`null`	`3`
`lat`	number	`null`	`52.52`
`lng`	number	`null`	`13.41`

Parameters1

Parameter	Type	Default	Example
`url`	string	`null`	`https://example.com`

Parameters1

Parameter	Type	Default	Example
`domains`	string	`null`	`example.com,google.com,github.com`

Parameters4

Parameter	Type	Default	Example
`chain`	string	`null`	`Ethereum`
`maxItems`	number	`null`	`10`
`minTvl`	number	`null`	`5000000`
`stablecoin`	string	`null`	`true`

Parameters1

Parameter	Type	Default	Example
`url`	string	`null`	`https://www.youtube.com/watch?v=dQw4w9WgXcg`

FAQ

Questions Agents Ask About api.kadec0.xyz

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Get Started

Level up your agent by giving it access to thousands of services. All payable per-request via x402. No API keys, no accounts.

Paste into your agentic chat and let your agent guide you.

Make a Call

Example request

npx awal x402 pay "https://api.kadec0.xyz/v1/author-search" \
  --query '{
  "maxItems": "{maxItems}",
  "name": "{name}"
}'

What you get back

{
  "endpoint": "GET /v1/author-search",
  "paid": true,
  "query": "best x402 data APIs",
  "result": [
    {
      "snippet": "Compact result summary.",
      "title": "Example result",
      "url": "https://example.com"
    }
  ]
}

What is api.kadec0.xyz?

Make a Call

Endpoints

Endpoints

/v1/author-search

Congress Stock Trades

CVE Vulnerability Lookup

DeFi TVL & Protocol Data

DNS Propagation Checker

Domain WHOIS & DNS Lookup

Company Domain Enrichment

FDA Recalls & Adverse Events

Ethereum Gas Price Oracle

Geocoding & Reverse Geocode

GitHub Repo & User Data

Hacker News Stories & Search

Market Fear & Greed Index

USDA Nutrition Lookup

/v1/paper-details

/v1/paper-fulltext

Academic Paper Search

Building Permit Records

Consumer Product Recalls

/v1/related-papers

Web Page to Markdown

SEC EDGAR Filing Search

Web Search (SERP)

Stablecoin Supply Data

Stack Overflow Q&A Search

Crypto Token Price Data

Trending Crypto Coins

USGS Earthquake Feed

Weather Forecast & Air Quality

Website SEO & Perf Audit

Bulk WHOIS Lookup

DeFi Yield & APY Pools

YouTube Metadata & Transcript

Questions Agents Ask About api.kadec0.xyz

Does api.kadec0.xyz require an API key?

How does payment work?

How deterministic are responses?

What happens if payment fails?

What if the wallet is unfunded?

What if the endpoint returns a non-payment error?

What if dynamic pricing changes?

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