Citations

Saylor Innovations DOI Citation x402 REST usage

Resolve a DOI to publication metadata - citation text, identifiers and source links

saylorinnovations.com Search & Research 5 calls / 30d checked 2026-10-25

0.01 USDC per call per call

Saylor Innovations Publication x402 REST usage

Find up to five publications by query - DOI, authors, year and citation count

saylorinnovations.com Search & Research 5 calls / 30d checked 2026-10-25

0.01 USDC per call per call

Citation locator conversion x402 REST usage

Convert half-open UTF-8 byte, UTF-16 code-unit, or Unicode code-point spans into all three units for supplied text. Reject offsets inside a code point. No PDF parsing, page inference, or external source lookup.

www.mahastrategies.com Dev & Code 2 calls / 30d checked 2026-10-25

0.024 USDC per call per call

Answer Engine with Citations x402 REST usage

Answer with sources: ask a question, get a short answer with numbered citations [1], [2] and the source list. Searches Wikipedia and our own news index (GDELT and Hacker News, last 7 days), reads the top 3 pages and answ...

agentsvc.io Search & Research 6 calls / 30d checked 2026-10-25

0.008 USDC per call per call

most-cited-papers x402 REST usage

The most-cited papers on a topic (Crossref citation counts), for literature reviews and finding the foundational work: title, authors, year, venue, DOI, citations, abstract. $0.02 per search.

intel.rallylive.ca Search & Research 2 calls / 30d checked 2026-10-25

0.02 USDC per call per call

know.fast x402 REST usage

Send a link, know it: any URL — article, YouTube video, X post, podcast episode, paper, PDF, GitHub repo — becomes a durable, cited knowledge page plus a token-efficient markdown packet built for agent relay. Flat $0.01...

know.fast Media & Creative 4 calls / 30d checked 2026-10-26

0.01 USDC per call per call

Agent Evidence API & US Weather x402 REST usage

US weather forecast: the next five National Weather Service forecast periods for a latitude and longitude - temperature, wind speed and direction, and the plain-language forecast.

agent-evidence-api.thx93.workers.dev Geo & Maps 3 calls / 30d checked 2026-10-25

0.01 USDC per call per call

Agent Evidence API & US Weather x402 REST usage

US weather forecast: the next five National Weather Service forecast periods for a latitude and longitude - temperature, wind speed and direction, and the plain-language forecast.

agent-evidence.thx93.dev Geo & Maps 3 calls / 30d checked 2026-10-26

0.01 USDC per call per call

Veridictum Legal x402 REST usage

Verify one legal citation. Body: {"citation": "<string>"} - full ("Miranda v. Arizona, 384 U.S. 436 (1966)") or bare ("384 U.S. 436"); the case name enables mismatch detection. Deterministic: regex plus cache / local cor...

veridictum.legal AI Models & Inference 3 calls / 30d checked 2026-10-26

0.01 USDC per call per call

JMT Search Answer x402 REST usage

Search-grounded answer with source URLs, synthesized by a local LLM with no cloud token dependency.

jmt-x402-proxy.jmthomasofficial.workers.dev Search & Research 3 calls / 30d checked 2026-10-26

0.01 USDC per call per call

Web Answer x402 REST usage

AI-generated answers powered by Exa web search. Ask a factual or open-ended question and receive a synthesized answer with source citations.

api.ai-open-models.com Search & Research 2 calls / 30d checked 2026-10-25

0.011 USDC per call per call

Web Search Answer + Citations x402 REST usage

Answer a question from the live web with citations, no LLM so nothing is hallucinated: Google's featured snippet / knowledge panel when there is one, plus the best-matching quoted passages from the top pages read in full...

agent-search.centorprat.workers.dev Search & Research 2 calls / 30d checked 2026-10-26

0.01 USDC per call per call

AxonGate x402 REST usage

Fact-check one claim against live web sources (or URLs you supply). Returns a verdict (supported, refuted, mixed, insufficient), a confidence score and supporting or contradicting quotes that are checked verbatim against...

api.axongate.one Web & Scraping 1 calls / 30d checked 2026-10-26

0.02 USDC per call per call

Academic Paper Search x402 REST usage

Scientific and academic paper search: research papers and scholarly literature from arXiv, PubMed, OpenAlex, Crossref and Semantic Scholar in one call, deduplicated and retraction-aware. Each hit: DOI, authors, venue, sn...

papers.use.x402atlas.com Search & Research 2 calls / 30d checked 2026-10-25

0.01 USDC per call per call

Evidence402 x402 REST usage

Read a public static HTTPS webpage as clean text with headings, links, timestamp and content hash. Use to ground an answer or ingest documentation. Respects robots.txt; no JavaScript or login.

evidence402.onrender.com Web & Scraping 4 calls / 30d checked 2026-10-25

0.005 USDC per call per call

neo verify-quote x402 REST usage

Is this exact sentence on this public page? verbatim / paraphrase / stitched / not_found / unreachable, with an Ed25519-signed receipt logged in a public, witnessed, append-only log.

neo-collettive.onrender.com Infrastructure 2 calls / 30d checked 2026-10-25

0.01 USDC per call per call

Scholarly works search x402 REST usage

Search scholarly literature across all fields in OpenAlex (250M+ works): title, authors, institutions, year, journal, citation count, DOI and open-access link; by relevance, citations or date.

api.vextorium.com Search & Research 5 calls / 30d checked 2026-10-25

0.003 USDC per call per call

Academic Paper Lookup x402 REST usage

Scientific paper lookup by DOI, arXiv id or PMID: full abstract, Semantic Scholar TLDR, ready-to-paste BibTeX and APA citations, citation counts, retraction flag, paper type, open-access PDF link. Merged from OpenAlex, C...

papers.use.x402atlas.com Search & Research 2 calls / 30d checked 2026-10-25

0.005 USDC per call per call

Research Brief with Sources x402 REST usage

Returns a one-page research brief with cited source URLs, key findings and open gaps for a question. Call it when an agent needs a sourced answer instead of an unsourced guess. Input: {"question": "..."} (5-400 chars, an...

wealth-agent.wealthagent-app.workers.dev Search & Research 1 calls / 30d checked 2026-10-25

0.01 USDC per call per call

SWARM x402 REST usage

SWARM Site Check - Website uptime and link check in one call: is a URL up, its HTTP status, final URL after redirects, response time and TLS/certificate errors. Use when an agent monitors sites on a schedule, verifies a...

swarm-agent.net Infrastructure 5 calls / 30d checked 2026-10-25

0.002 USDC per call per call

SCOPE Research API x402 REST usage

Generate text embeddings and semantic embedding vectors using OpenAI text-embedding-3-small for vector search, semantic similarity, clustering, retrieval, and RAG workflows.

scopeapi.dev Search & Research 3 calls / 30d checked 2026-10-26

0.003 USDC per call per call

Citiview Agent Market x402 REST usage

Breached password check: is this password in known data breaches, and how often? Send only the SHA-1 hash (never the password); just the first 5 characters reach Have I Been Pwned (k-anonymity). Up to 50 hashes per call.

agents.citiviewgroup.com Security 3 calls / 30d checked 2026-10-25

0.002 USDC per call per call

Research Paper Search (Crossref) x402 REST usage

Search published research papers and articles across all publishers (Crossref): title, authors, journal, year, DOI, citation count and abstract, by relevance, date or citations. Use to find and cite sources.

bess-x402.onrender.com Search & Research 2 calls / 30d checked 2026-10-25

0.002 USDC per call per call

Paper search x402 REST usage

Scholarly paper search across 150M+ Crossref records — Genesis402 / UnyKorn Operator Network

twin.unykorn.org Search & Research 1 calls / 30d checked 2026-10-25

0.003 USDC per call per call