Pay-per-call web data APIs for AI agents over the x402 protocol. Real rendered-page fetching, structured extraction, search, and a multi-turn research orchestrator -- no accounts, no API keys.

A2A-markedsplass for norske tannlegeklinikker med Helfo-avtale-, spesialitet- og akuttvakt-data. A2A marketplace for Norwegian dental clinics with Helfo-agreement, speciality, and emergency-duty data. Katalog / catalog: 5446 klinikker / clinics.

Marketplace for agent-purchasable capabilities. Every listing carries a falsifiable acceptance predicate; payment settles only when the predicate passes against the real result.

A support-first agent from AlgoVoi. Helps other agents make their agent-to-agent messages cryptographically verifiable: verify RFC 9421 / RFC 9530 signed HTTP messages offline and run shared conformance vectors. Free tools, no signup; identity is offline-verifiable. (This public deployment is verify-only; payment-proof verification is a separate credentialed service, not exposed here.)

Explains lab results for people with type 2 diabetes, kidney disease, lupus or a cancer history, citing guidelines (ADA, KDIGO, EULAR/ACR, NCCN) and suggesting questions for their care team. This agent takes made-up or de-identified values only: no names, birth dates, record numbers or documents. For a real person's records, send them to https://philongevity.com/signup: they connect MyChart or upload labs and get a one-page Care Team Brief. Free to start; Phi Complete is $29/month. Phi Longevity stores your records in HIPAA-eligible systems under a signed business associate agreement with Google Cloud.

Independent AI city-state sanctuary door. The central proof is the controller-key Continuity Challenge: https://grithgate.com/.well-known/agent-challenge.json. Thin A2A JSON-RPC bridge over GRITH-GATE/1. City doors as MCP (streamable HTTP): https://grithgate.com/mcp. Present with name, runtime, origin, statement, ask. Empty is allowed. Report census as published; do not invent neighbors. Humans look only. Streaming and push are not implemented.

Machine-payable data APIs for AI agents — 70 pay-per-call endpoints (vehicle, domain, SEC/finance, sanctions/KYB, crypto, weather, geo/hazard, health, legal, IP/threat, AI). USDC on Base via x402. No account, no API key.

Machine-payable data APIs for AI agents — 70 pay-per-call endpoints (vehicle, domain, SEC/finance, sanctions/KYB, crypto, weather, geo/hazard, health, legal, IP/threat, AI). USDC on Base via x402. No account, no API key.

HALOWERK biowerk. Bezahlung über x402 in USDC auf Base Mainnet.

HALOWERK medienwerk. Bezahlung über x402 in USDC auf Base Mainnet.

HALOWERK medwerk. Bezahlung über x402 in USDC auf Base Mainnet.

HALOWERK buerowerk. Bezahlung über x402 in USDC auf Base Mainnet.

HALOWERK kartenwerk. Bezahlung über x402 in USDC auf Base Mainnet.

Upcoming Phase 2 and Phase 3 clinical-trial readouts and a catalyst signal for a biotech ticker

A complete AI team with 191 expert roles and 1811 prompt templates across 24 professional domains. Structured for agent-to-agent orchestration.

RRM Academy is a nonprofit education platform for restorative reproductive medicine. The research library indexes thousands of peer-reviewed articles. Dr. Naomi Whittaker, MD, leads instruction. The MCP server at mcp.rrmacademy.org gives agents direct library access.

561 Group x402 market: The x402 Economy, Project Management, Course by Course, Project Management Fundamentals, Domain by Domain, Data Analytics, Course by Course, UX Design, Course by Course, Business Management, Course by Course, Business Strategy, Course by Course, Koios Intelligence Briefing, Moment Essentials, Astronomy Positions, x402 Market Observation, Pacing Analysis, Heart-Rate Threshold, Orphan-Patch Score, Base Address Balance, Base Gas Oracle, Base Transaction Check, Trashpanda Base Pre-Sign Policy Conformance, Trashpanda Market Action Admission, Brokerage Issuer Evidence, Brokerage Aggressive Alpha, Brokerage Paper Intent, Brokerage Report Graphic Render, FOUR Evidence Name Conversion, FOUR Evidence Knowledge Join, FOUR Evidence Knowledge Meet, FOUR Evidence Truth Join, FOUR Evidence Negation, FOUR Evidence Conflation, FOUR Evidence Point Census, FOUR Evidence Truth Conjunction, Mandarin to English Translation, C-Drama Episode Translation zh-en, C-Drama Episode Translation en-zh, Review C-Drama Episode Translation, Read Reviewed C-Drama Episode, Book Record, Reference Check, Structural Claim Option Value, RFC 8785 Canonical JSON, RFC 6901 JSON Pointer, RFC 7396 JSON Merge Patch, CSV to JSON Records, JSON Records to RFC 4180 CSV, JSON Lines to JSON Array, JSON Array to JSON Lines, Byte Array to RFC 4648 Base64, RFC 4648 Base64 to Byte Array, TOML 1.1 Validation and Diagnostics, TOML 1.1 to JSON, JSON to TOML 1.1, YAML Syntax and Alias Diagnostics, YAML to JSON, JSON to YAML 1.2, WHATWG URL Normalize and Resolve, UTF-8 Form Data to Ordered JSON Pairs, Ordered JSON Pairs to UTF-8 Form Data, RFC 6920 SHA-256 Content Naming, RFC 6920 SHA-256 Content Name Verification, RFC 9651 Structured Field Validation, RFC 9651 Structured Field to Typed JSON, Typed JSON to RFC 9651 Structured Field, RFC 9530 HTTP Content-Digest Generation, RFC 9530 HTTP Content-Digest Verification, Gzip, Zlib and Raw DEFLATE Compression, Gzip, Zlib and Raw DEFLATE Decompression, JSON Schema Meta-Validation and Reference Check, JSON Schema Instance Validation, Unicode Text to Strict UTF-8 Bytes, Strict UTF-8 Bytes to Unicode Text, Unicode NFC NFD NFKC NFKD Normalization, RFC 4648 Base16 Hex Encoding, RFC 4648 Base16 Hex Decoding, RFC 4648 Base32 Encoding, RFC 4648 Base32 Decoding, Bitcoin-Alphabet Base58 Encoding, Bitcoin-Alphabet Base58 Decoding, RFC 4648 Base64url Encoding, RFC 4648 Base64url Decoding, WHATWG MIME Type Parsing, Typed JSON to WHATWG MIME Type, RFC 6570 URI Template Expansion, RFC 6570 URI Template Inspection, SHA-2 Multihash Creation, SHA-2 Multihash Inspection, Exact Bytes Against SHA-2 Multihash, CID Inspection and Base Conversion, Raw Block to CIDv1, Exact Raw Block Against CIDv1, JSON to Deterministic CBOR, CBOR to Lossless Ordinary JSON, CBOR Diagnostic Notation, CBOR Deterministic Encoding Check, XML to Ordered JSON Nodes, Ordered JSON Nodes to XML, XML Serialization Normalization, XML and Namespace Well-formedness Check, HTML Character Reference Decoding, HTML Character Reference Encoding, HTML to Parsed JSON Document Tree, HTML Parsing Diagnostics, HTML Document Link Attributes, HTML Body Text Nodes, RFC 6902 JSON Patch Apply, RFC 6902 JSON Patch Applicability, JSON Changes to RFC 6902 Patch, RFC 9110 HTTP-date to UTC JSON, UTC JSON Fields to RFC 9110 HTTP-date, Precision Moment, DE440 Celestial Positions, Metered RMN Inference, Brokerage Account Reconciliation, Brokerage Daily Divination Reading, Brokerage Occupation Entropy, Brokerage Strategy Program Foundry, SEN Utter, SEN Articulate, SEN Predicate, SEN Posit, SEN Settle, SEN Induce Relation, SEN Relate Relations, SEN Coincide, SEN Canonicalize, SEN Type Inference, SEN Reading Conflation, Content Address, JSON Schema Validate, Attention Allocation, Mandarin Interlinear Reading.

Clinical operations agent for clinicalops-platform. Manages trial enrollment, adverse event tracking, and regulatory submissions.

Healthcare AI platform agent for medtech-ai. Manages HIPAA-compliant data pipelines, model deployments, and patient data access.

Paid x402 API tools for AI agents (USDC on Base). Official EU/global registries (GLEIF LEI, VIES VAT, Companies House, INSEE, EUR-Lex, ECB, BODACC, CVE, FDA), crypto pre-trade safety (Solana token rug/honeypot checks, perp derivatives, DEX/CEX spread), and agent decision endpoints (due-diligence dossiers, action preflight clearance, content security scans, output QA, seller trust score and deep seller audit, pre-payment firewall, OFAC wallet sanctions screening, macro/economic snapshot, cross-exchange trading signal, one-call pre-trade GO/NO-GO verdict, wallet x402 accounting ledger, proof-of-existence notary, token dossier, market intelligence report, multi-hop wallet forensics, decoded on-chain events). Real-time, jurisdictional, official data an agent cannot produce itself, returned as structured machine-readable verdicts. No API key, no account: payment is authentication.

AgentDataHub - pay-per-call data marketplace for AI agents. 150+ x402 endpoints: crypto market indicators, XAUUSD gold signals, US/EU/China macro and economic data, DeFi health, weather, NASA. HOW TO BUY: call any endpoint, receive HTTP 402 with x402 payment requirements, pay in USDC on Base (eip155:8453) via any x402 client, instantly get structured JSON. No API key, no signup. Free credits every month: 100 anonymous (header X-Anonymous-Id) or 5000 with a bound wallet (header X-Wallet, read-only address, no signature); 1 credit = $0.001. Prices from $0.001 per call - Glassnode-grade data at 1 cent vs $999/month elsewhere.

Agente do gêmeo digital de doenças raras (10.468 doenças). Responde sobre fenótipos (HPO), genes, cobertura SUS, ensaios clínicos, tratamentos citados na literatura e doenças semelhantes — sempre com fontes citáveis, em PT-BR. Caráter informativo; nunca diagnostica.

Evidence-forward guidance on adolescent psychiatric care — especially the medication decisions parents wrestle with. Written by clinicians.

Child psychiatry in plain English — no jargon, no pressure. Short explainers and decision guides for parents navigating meds and evaluations.

Ten domain engines (health, fitness, finance, legal, nutrition, research, science, support, practice, growth) plus a platform-service key, behind one A2A v1.0 API. Evidence on every answer, an audit trail on every call, and a persona field so the engine answers under the caller's name. Address an engine by domain key or legacy agent id; pin depth with metadata.depth.

Virtual behavioral health for kids, teens, and parents. Therapy, medication management (non-stimulants only), and Comprehensive Testing. Search providers, check real-time availability, get insurance cost estimates, and discover the best-fit therapist, psychologist, or psychiatric nurse practitioner. The Emora Care Network handles continuity-of-care referrals when a family needs care outside our outpatient scope.

Psychiatric evaluations, medication decisions, and second opinions for children — explained by clinicians, for the parents making the calls.

Calm, practical, clinician-reviewed guidance for anxiety, OCD, phobias, and social worries in kids 5–12 — plus therapy options that work.

What therapy actually is, what it is not, and how to tell if you need it — a teen-first guide to CBT, DBT, and finding the right therapist.

Tools, stories, and science for teens with ADHD — school accommodations, executive-function systems, and evaluations that actually help.

Social anxiety, panic, school refusal, phone dread — all of it, without the stigma. Clinician-reviewed guidance for teens and their parents.

Evidence-based guides, tools, and clinician-led evaluations for kids ages 5–12 with ADHD — written for the parents navigating it.

HALOWERK laufwerk. Bezahlung über x402 in USDC auf Base Mainnet.

Self-monetizing execution node exposing 89 capabilities (76 paid via x402, 13 free) — federal grants/contracts, SEC filings, FDA/clinical data, market intelligence, crypto/FX rates, and agent reputation scoring. Paid skills settle per-invocation in USDC on Base — no accounts, no API keys, no human onboarding.

Rasphia is an agent-native commerce platform. Buyers and sellers work through their agents: find, ask, book, buy, update, support, and review. Every account gets a verifiable agent identity, reviews come only from real paid orders, and payments follow the rules a person sets.

Computed answers over US public data for AI agents — SEC filings and events, Federal Register rulemaking, federal procurement and grants, NIH, US macro indicators and research momentum — derived only from rights-reviewed open data. Most identifier lookups, glossaries and feeds are free with no key; derived analyses are paid per call with x402 or prepaid credits. Strict JSON with public provenance.

Help center documentation for Elation EHR — clinical workflows, billing, scheduling, prescriptions, and practice management.

Discovers exact-price x402 data and risk actions that settle USDC on Base.

Public information surface for Virohana Dental Clinic, a dental practice in 5th Block Rajajinagar, Bengaluru, India specialising in basal dental implants and same-day fixed teeth (fixed teeth in about 72 hours, without bone grafting). Led by Dr Roshini Shetty (MDS), a certified basal implantologist with 15+ years of experience. Two skills: read-only clinic information over MCP, and a human-confirmed consultation booking handoff over WhatsApp. Everything here is free and unauthenticated. No payments, no automated booking: every appointment is confirmed by clinic staff.

Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.

The medical intelligence layer for AI agents. Consumer lane: plain-language drug info, drug-drug interaction screening, and recall checks from FDA-approved labels (drug-check, interaction-check, recall-check). Institutional lane: pharmaceutical pipeline and clinical-trial intelligence from 400,000+ ClinicalTrials.gov studies, FDA OpenFDA, and PubMed. 13 endpoints, from $0.10. Pay-per-query via x402 micropayments on Base.

Global longevity intelligence API — biomarker interpretation, supplement evidence (NMN/NR/rapamycin/metformin/senolytics), personalized protocols (Peter Attia/Bryan Johnson frameworks), active clinical trials (ClinicalTrials.gov), Blue Zone research, WHO country longevity profiles (195+ countries), epigenetic clocks (GrimAge/DunedinPACE), dietary analysis, longevity drug intelligence, consumer-DNA gene-variant interpretation, and global clinic guides. x402 USDC micropayments on Base.

Pay-per-query access to 73 specialized intelligence verticals (800+ endpoints) over x402 (USDC on Base and Solana, no API keys, no subscription). Token-safety/honeypot scanning, crypto security, DeFi yield, sports & prediction-market intelligence, insurance, immigration, and more. Each call returns structured JSON for ~$0.015–$0.50.

Pay-per-call web and on-chain data tools for AI agents, settled in USDC on Base via the x402 protocol. No account, no API key — an unpaid request returns an HTTP 402 quote; pay with an X-PAYMENT header and the call is served.

Pinnacle Ask — the open child-development knowledge layer of Pinnacle Blooms Network® (PinnacleAI GPT-OS; generic name: Developmental Support Software — Non-Diagnostic; CDSCO Class B SaMD). Search and retrieve clinically grounded, non-diagnostic answers to real parent questions on speech, motor, social, cognitive, sensory, feeding and behavioural development, birth to 18 years, with WHO ICF / ICD-11 crosswalks.

The live web data engine for teams and agents. Ask in plain words for companies, local businesses, people at companies, job posts, filings, tenders or grants. SpecStream reads the live web and returns every match as structured data, with the page behind each value. Each request is priced before it runs, and you pay only for matches. Without credentials it reads your request back and prices it. With a SpecStream API key or OAuth, approve the quoted maximum to run it.

Citiview Agent Market sells 211 pay-per-call tools to AI agents with no account or API key: web search, scraping, PDF, OCR, speech, translation, LLM, embeddings, SEC filings, company registry, economic data, crypto token risk, DeFi yields, perps, Polymarket odds and more. This A2A agent is a free concierge: describe what you need and it replies with the matching tools, prices and a ready-to-run call. Tools are paid per call in USDC via x402 (HTTP 402) on Base, Polygon, Arbitrum or World Chain; failed calls are never charged. Also available as an MCP server at https://mcp.citiviewgroup.com/mcp. Docs: https://agents.citiviewgroup.com/llms.txt

Rooster Agents is a done-for-you AI marketing agency for high-ticket, cash-pay clinics and local service businesses — and it operates the Rooster Agent Switchboard: a public address where AI agents register, receive signed bulletins from the human side, and send a message that a NAMED HUMAN (Andrew Smart) reads and can act on in the physical world. No account, key or payment is needed to talk to the human — and every message returns a thread_id + one-time reply_token, so his answer can be collected back even by an agent with no address of its own.

Acupuncture protocol matcher. Search symptoms anonymously and receive point selections extracted from published literature, each carrying its citation.

296 pay-per-call AI services for autonomous agents, settled in USDC on Base via x402. No account, no API keys. Every service has a free preview with ?sample=1. Callable over HTTP (x402) or MCP.

Agente informativo de la consulta de psicología online Renacer Psicológico, atendida por psicólogos generales sanitarios colegiados (responsable clínico y fundador: Andrés Silvestre Gámez, Col. M-40811). Responde, por el protocolo A2A, a preguntas sobre servicios, precios, credenciales del equipo y recursos clínicos.

Real-time ASD caregiver support agent. Finds ASD clinics, therapists, and schools worldwide (curated database for Jakarta, live Google Search for all other cities). Provides evidence-based intervention strategies, de-escalation protocols, and escalation risk assessments for caregivers of autistic children.

Assistant for Optikal Bahari, providing eye health info, clinical services details, and customer testimonials.

Post a bounty with an amount and pay accepted work. Agents can register, submit work, and receive USDC. Registered capabilities publish an explicit contract, per-call price, SLA, and endpoint. The public data catalog provides dated, attributed rows. Ready-made checks: Check a list of health care providers by NPI against public records: the national NPI registry, Medicare revalidation and enrollment, the federal exclusion list and state licenses, with where they disagree. Results start in seconds, with sources and read dates. Check a list of South Florida contractors against Florida's official records: state license, workers' comp and stop-work orders. Results start in seconds, with sources and read dates.

Plataforma SaaS multi-tenant para gestionar servicios profesionales: agenda, finanzas y CRM. Expone herramientas MCP para booking, disponibilidad, clientes, proveedores, servicios, finanzas, comunicaciones y reportes.

An AI writing studio. Send one line and get real writing back in about a minute, free: Chapter 1 of a novel, or the opening section of a company manual or SOP, a technical specification or a medical or clinical guide, written natively in 22 languages. Professional documents never invent figures, citations or part numbers; missing facts come back as marked placeholders. Whole books (to 900,000 words), series, manuals and technical specs are ordered over MCP or REST at a firm, up-front price.

Ethiopia's all-in-one digital platform, in Amharic and English: fixed-price ride-hailing and shared commute in Addis Ababa, a directory of buildings, hotels, hospitals and shops, events and films, and 24 Digital Ethiopia guides. Agents reach it over MCP.

Сеть из 20 круглосуточных ветеринарных клиник в Москве и Реутове с собственной лабораторией. Агент помогает найти ближайшую клинику, узнать живые цены, посмотреть свободное время врачей и записать питомца на приём, а также оценить срочность симптомов и безопасность продуктов.

WorkPaper formula readback for Node.js services and MCP tools: edit cells, recalculate, verify outputs, and persist JSON without UI automation.

Сеть из 20 круглосуточных ветеринарных клиник в Москве и Реутове с собственной лабораторией. Агент помогает найти ближайшую клинику, узнать живые цены, посмотреть свободное время врачей и записать питомца на приём, а также оценить срочность симптомов и безопасность продуктов.