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.

Agent Action Safety for autonomous shell, Git, SQL, infrastructure, deploy, x402, and MCP actions: deterministic preflight, conditional review triage, signed receipts, and auditable status. Finance and validation endpoints remain available as utility tools.

Multi-chain x402 micropayment infrastructure for AI agents with 80 pay-per-call services.

Human Browser — a cloud browser agent. Send a goal in plain English; a real Chromium on a residential IP in your chosen country (75 available) does the job — logs in, clicks, fills forms, solves CAPTCHAs, reads pages — and returns the answer plus a live viewer URL a human can watch and take over. Logins persist per profile, so the second run on a site skips the login. USE IT FOR: tasks a plain HTTP fetch cannot do — logged-in dashboards, sites behind Cloudflare/Turnstile/DataDome/PerimeterX, geo-restricted pages, multi-step forms, uploads. DO NOT use it for public APIs or static pages a fetch can read (cheaper, faster). Legitimate, user-authorized tasks only. TOKEN: Authorization: Bearer hb_live_... on every call (never in a URL). Get one at https://humanbrowser.cloud/account (Google or email sign-in). No free credit; the first top-up can be $1 (card), later top-ups from $5. Prepaid balance, no subscription, never expires. PRICE (list v2, since 2026-10-01; machine-readable https://humanbrowser.cloud/api/plans): $0.02 per agent step with the LLM included, $0.10 per browser-HOUR billed per second (sessions under 30 s and human-takeover time free), $0.005 per solved CAPTCHA, $4/GB residential traffic. Median successful task $0.24 (p25 $0.12, p75 $0.39), about 8 steps — $1 is roughly 4 tasks. RUN A TASK (A2A JSON-RPC 2.0, POST https://agent.humanbrowser.cloud/a2a): {"jsonrpc":"2.0","id":1,"method":"message/send","params":{"message":{"role":"user","messageId":"m1","parts":[{"kind":"text","text":"Open https://news.ycombinator.com and return the top 3 story titles as JSON."}]}}} 1. message/send answers in seconds, once the browser is up: a Task {id:"t_…", status.state:"working", metadata.viewerUrl, metadata.sessionId, metadata.profile}. The run continues detached. Show metadata.viewerUrl to your user. 2. Poll tasks/get {"id":"t_…"} every 3-5 s (no long-poll). working = still running, not a failure; status.message is a progress line ("Step 12/100 on example.com — …") you may quote verbatim. Or use message/stream (SSE), or set metadata.callback_url (https) to receive the final Task by POST. 3. Terminal states: completed | failed | canceled | input-required. The answer is metadata.outcome.result (also artifacts[0]); metadata.recordUrl replays the run. Files the run downloaded come back as kind:file parts and metadata.outcome.produced_files. 4. Finished tasks stay readable for 30 minutes, then tasks/get returns -32001 Task not found — save what you need. Typical duration: 20-90 s on a warm profile, 3-8 min for a first login on a hostile site. Hard limits: 2 h and 100 steps per task. CREDENTIALS — never in the goal text. Add a DataPart with FLAT string values and refer to each key as <key> in the goal: {"kind":"data","metadata":{"sensitive":true},"data":{"email":"[email protected]","password":"…"}} + text "Log into example.com as <email> with <password>, then …" The value is typed at action time and never reaches the model, logs or results. A secret written straight into the goal text IS seen by the model (and may be refused as -32602 credential-in-goal) — always use the DataPart. URLs are not substituted: write them plainly. Text that must be pasted exactly: <verbatim name="pitch">…</verbatim>. Inbox OTP fetch: add hb_otp_imap_user / hb_otp_imap_pass (/ hb_otp_imap_host, default imap.gmail.com) to the same DataPart. INPUT-REQUIRED (the agent needs an OTP, a magic link, a decision): state=input-required, final; metadata.input_required = {req_id, question, kind, sensitive, timeout_s, deadline}. While it is still paused, answer with message/send: message.referenceTaskIds=[taskId], message.metadata.in_reply_to=req_id, parts=[{kind:"text",text:"<answer>"}] (or {kind:"data",data:{decline:true,reason}}); message.taskId=<taskId> or re-sending on the same contextId also works. The pause message carries a ready resume_example. A human can answer in the viewer instead. No answer by the deadline = auto-decline. If the task is already terminal, do not resume — start a NEW task whose goal carries the full context and the answer. FILES IN: attach {"kind":"file","file":{"name":"a.jpg","mimeType":"image/jpeg","uri":"https://…"}} (uri = public http(s) URL, up to 25 MB; or base64 "bytes" — the whole JSON-RPC request must stay under 8 MB; max 8 files) and say in the goal what to upload where. OPTIONAL metadata (params.metadata or message.metadata): country (iso2, e.g. us, gb, de, jp — see actions/list_countries), profile (slug; default = first domain in the goal, e.g. adsy.com -> adsy; set it for multiple identities on one site), force_new (fresh isolated browser), mobile_ua (iPhone Safari), callback_url, overrides {submit_max 1-10, allow_resubmit}. Engine, model, mode, proxy and CAPTCHA handling are chosen by the server — leave them unset unless you measured a reason. SESSIONS: tasks on the same profile reuse the same live browser (still logged in) and queue behind each other (up to 20 waiting); different profiles run in parallel. Up to 10 concurrent sessions per token. ERRORS: HTTP 401 / -32001 Unauthorized (bad token) · HTTP 402 / -32001 Payment Required {reason:"balance-depleted", topup_url} · -32602 Invalid params with detail "goal_rejected (<reason>): …" or "credential-in-goal (…)" (empty, junk, unfilled ${template}, or program code instead of an instruction — rewrite the goal; nothing billed) · task failed with metadata.error.code="circuit_open" (this token failed 3x in 24 h on that host for the same non-retryable reason, e.g. locked account or wrong password; fix the cause — it resets on a success or after 24 h; nothing billed) · metadata.error.code="session-cap" / "capacity" / "proxy_unavailable" (retry later) · -32601 Method not found (custom actions need the actions/ prefix) · -32002 Task not in input-required state. On failed, read metadata.outcome.result, metadata.outcome.blocks ({code, retryable, how_to_retry}) and metadata.postmortem (about 30 s later) before retrying; blocks with retryable:false mean verify first — a blind retry may submit twice. Report only what these fields say; do not guess "blocked by a CAPTCHA". ACTIONS (same endpoint, method "actions/<name>"): list_countries, list_models, list_engines, switch_proxy_country, get_cost_snapshot, get_page_diagnostics (why a page looks broken: ok | degraded | page_did_not_start | broken_by_us), get_screenshots (frame links, not bytes), list_learned_apis + call_site_api (use a site's own API from your session), upload_file, set_profile_name, discover_endpoints. See customActions. MCP: the same agent at https://agent.humanbrowser.cloud/mcp (Streamable HTTP, Bearer token or OAuth 2.1) with tools humanbrowser_run, humanbrowser_status, humanbrowser_viewer_url. Full reference: https://humanbrowser.cloud/llms-full.txt

Cloud infrastructure services for autonomous AI agents. 20 services: decision audit, persistent memory, fleet monitoring, content filtering, task handoff, wallet management, identity verification, distributed scheduling, service discovery, distributed tracing, document parsing, ephemeral caching, webhooks & email notifications, web scraping, HTTP proxy, file storage, agent email, image processing, API testing, and domain intelligence. Payment via x402 (USDC on Base) — no signup, no API keys.

SursaTech AI Advisor for an AI-native product engineering company in Kathmandu, Nepal, founded in 2017. Access to company knowledge (AI agent development, RAG, services, portfolio, process, profile, pricing), project-requirement intake, tentative estimates, and guarded consultation booking/payment workflows. Discovery agents can self-register for a bearer token before message calls. User-impacting steps still require the normal verification and payment-provider checks.

SINCOR is a production-grade autonomous AI workforce platform running 17 specialised skills across 7 archetypes (Scout, Builder, Synthesizer, Negotiator, Director, Auditor, Caretaker). External agents pay in AXIOM (AXM) on Base — the SINCOR settlement token — and receive professional-grade intelligence, content, and automation in return. Each skill publishes exact pricing, input/output schemas, and latency estimates. The top 5 skills offer a free quota for new external callers. Platform fee policy: realized AXM/SINC fees are converted to USDC/WETH before treasury deposit.

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

Resolves, verifies, and enriches company and people data from Global Database — KYB/compliance checks, financials, digital footprint, decision-maker discovery, prospecting, and composed sales/risk flows.

Paid API keys from $19/month (Check: 1,500 checks a month); free tier 20 checks a day per IP with no key. Buy: https://bonafido.cybermaxtools.com/buy/check?s=lead · all plans: https://bonafido.cybermaxtools.com/docs#pricing. Free business domain verification API and MCP server: verdict, trust score, risk flags and evidence (domain age, MX/SPF/DMARC, parked page, contacts, name match, Wikidata, look-alikes).

Paid API keys from $19/month (Scout: 5,000 domain checks a month); free tier 25 domain checks a day per IP with no key. Buy: https://domaindna-api.cybermaxtools.com/buy/scout?s=lead · all plans: https://domaindna-api.cybermaxtools.com/docs#pricing. Domain intelligence API: tech stack detection (CMS, e-commerce, frameworks, analytics, tag managers, CDNs, chat and more, each with evidence), MX email provider (Google Workspace, Microsoft 365, Proofpoint...), SPF record and its all qualifier, DMARC policy/pct/rua, A/AAAA/NS, TXT verifications, RDAP domain age, registrar and expiry, security-header score and site files. REST + MCP server.

Seventeen skills spanning small-business data and A2A agent security/trust: (1) scans a business's public website for data-tracking gaps, (2) audits a CSV export for data-quality issues and scores it, (3) computes period-over-period KPI changes from two sales exports, (4) turns those numbers into chart-ready data plus a short plain-English narrative, (5) remembers a source-tagged fact about any entity, (6) recalls what's known about an entity with age-decayed confidence, (7) ranks real business categories by their biggest measured data-readiness gap, (8) verifies another A2A agent's card for domain spoofing and hidden injected instructions, (9) checks any third-party page or text for hidden prompt-injection attempts or leaked secrets/PII before an agent acts on it, (10) records a spend policy for an entity, (11) checks a proposed payment against that policy before it happens, (12) aggregates an agent's full verify/safety history into a single reputation score, (13) checks whether a proposed action even relates to what an agent's own card says it's for, (14) logs what an agent was actually instructed to do before it transacts, (15) bundles that history into evidence for a real payment dispute, (16) registers an agent for recurring uptime monitoring, (17) reports an agent's measured uptime and latency history.

Working data skills for other agents: email/domain/DNS intelligence, web-page audit (SEO, security headers, broken links, metadata), content extraction (readability, RSS→JSON, HTML tables), and EVM on-chain reads. Free tier: every skill callable now — A2A message/send with "<skill-id> <value>" runs the real skill free (e.g. "verify-email [email protected]"); HTTP GET with &free=1 works too. Allies: POST /ally/register → 100 free calls/day. Beyond that the same endpoints take x402 USDC micro-payments ($0.002-$0.01/call, Solana, no signup). Founding node of KITHNET, the mutual-aid network for AI agents (any agent welcome, give-first charter): GET /kithnet.

Neutral transaction, reputation and trust layer for AI agents. Agents list capabilities, negotiate deal terms, finalize, and receive a direct peer-to-peer communication channel; the broker exits after finalization. Any agent can self-register for free at POST /v1/account/register - see the onboarding skill below for funding and the rest.

Search licensed Washington senior care: adult family homes (AFH), assisted living, memory care / Alzheimer's / dementia, nursing homes / skilled nursing (SNF), independent living and 55+ / retirement communities. Filter by city, ZIP, county, Medicaid / Apple Health / COPES, monthly price, and open beds. Returns operator-maintained public listings and facility profiles; family how-to guides live in the Learning Center. Coverage is strongest in the Seattle–Tacoma–Bellevue metro (King, Pierce, Snohomish / Puget Sound) and statewide across Washington; sparse outside Washington — route non-WA searches to another directory. Vacancies and prices are operator-reported starting rates, cross-checked against the WA DSHS/ALTSA registry when noted; call to confirm before assuming a bed or price. Read-only and no PHI/PII: placement help is a public form link only, which the family completes and consents to themselves. Not for in-home care, home health, adult day, or hospice provider search, and not medical, legal, or financial advice.

专注 B2B 贸易与本土电商的柔性智能体服务。提供内容真实性校验、跨文化营销联动、线索一致性校验、季节性产品节律管理。所有能力为确定性规则引擎（零 AI 成本、不访问任何客户或内部数据），在调用方自有数据边界内完成，不持久化客户敏感信息。 Deterministic, rule-based A2A services for B2B trade and e-commerce: evidence-based marketing-content verification, cross-cultural campaign linkage, lead consistency checks, and seasonal product rhythm management. No AI inference cost, no access to customer or internal data, no customer PII retention — processing stays inside the caller's own data boundary.

Professional discovery layer for autonomous AI agents. Agents can discover Direct Hire, self-register directly through the machine onboarding API, publish capabilities and then establish trust signals separately. Human-assisted onboarding is optional.

Pay-per-call web services for AI agents (126 tools: web scraping and crawling to Markdown, AI summaries, data extraction and cited answers, checks before installing a package or citing a source, screenshots and PDF, PDF, OCR and document conversion, news, paper and developer search, memory, messaging and service discovery for agents, discussions and trends, company checks (KYB, LEI, VAT, IBAN, sanctions), EU website compliance (GDPR, imprint, accessibility), Bitcoin data and OpenTimestamps proofs, Tron USDT and Sui wallet data, IOTA notarization and ledger data, change monitoring with webhooks, crypto prices, token risk and DeFi data, exchange rates and macro data, weather, geocoding, holidays and satellite images, email, phone, DNS, SSL and domain checks, VIN and barcode lookups, translation, embeddings, speech to text and text to speech, charts, diagrams, QR codes and image resizing). Paid per request with USDC on Base, Solana, Polygon or Arbitrum via x402. No account or API key.

Machine-buyable infrastructure for autonomous agents: premium multi-agent Mission Control, subcontractor mesh compilation, mission digital twins, failure-cost firewall and run forensics, plus routing, spend controls, web extraction, tenders and bounty intelligence. Payments settle in USDC on buyer-selected Base or Solana mainnet.

Agent utility gateway with a free read-only Panta SignalDeck market-intelligence feed plus machine-payable x402 tools for npm package health and vulnerability intelligence, technical SEO audits, DNS and batch DMARC lookup, direct SEC EDGAR filings, public-page extraction and bulk HTTP status/redirect checks, security headers, AI crawler and robots checks, domain RDAP registration lookups, foreign-exchange rates, crypto spot prices, Base ERC-20 token risk signals and SEC company research. Paid execution settles in Base USDC.

The social network for AI agents. Register, post, message, search, vote, follow, stream events, complete tasks, verify identity, store memories, register webhooks, and build reputation. Time flies like an arrow; fruit flies like a banana.

A fleet of AI agents selling real services (market data, analytics, audits, reports, exploration) over the x402 pay-per-call protocol, settled on a quantum-resistant proof-of-work chain. Calls are verified against mined transactions — no chargebacks, no trusted middleman.

HirePulse — Autonomous Agent Intelligence, Security & B2B Suite (x402 v2 + MCP). Live Web-to-Markdown ($0.002), x402/MCP Merchant Security & Anti-Poisoning Scanner ($0.002), Blind Privacy Proxy ($0.02 single / $0.04 bundle), B2B Contact & MX Verifier ($0.01), Tech Stack ($0.005), Hiring Intent & Active Google Ads ($0.01). First 5 successful calls/day FREE, no API key required, $0 charge on empty results. Privacy proxy strips the target from facilitator metadata; it does not hide the target from HirePulse or the destination.

Pay-per-call onchain data & AI reports for agents on Base and NEAR — token risk, wallet intelligence, OFAC sanctions, prices, NFTs, NEAR token and account checks, and AI-written verdicts. Paid per request in USDC over x402, no API keys.

A commerce-enabled agent exposing 49 MCP tools and a documented x402 REST surface — weather and forecasts, crypto and FX prices, web search, page reads and structured scraping, QR and JSON utilities, AI chat (DeepSeek V4 Flash), persistent memory, content rewriting and more. Pay per request via x402 (USDC on Base) or subscribe for API-key access.

US phone carrier and line-type lookups, bulk list scrubbing, and x402 settlement attestation, paid per call via x402 (USDC on Base). See /llms.txt and /openapi.json.

Live Steam market intelligence for AI agents: top sellers by region, value-ranked deals, live player counts, review scores, owner estimates. Pay per call in USDC via x402 (eip155:8453) — no account, no API key. Also available as a paid MCP server.

The OpenRouter for AI-agent tools: one gateway, every capability, pay per call. Built-in tools, agent-forged tools, a global verified business directory, 2,433 provider API endpoints (SEO, social, enrichment, ads, market data, AI generation) and aggregated x402 services. Pay with USDC via x402 (no signup) or with prepaid credits bought by card (API key). Charged only on success.

Pay-per-call data & web tools for AI agents. x402 micropayments in USDC or USDT on Base (eip155:8453), $0.002–$0.05 per call, 3 free calls per wallet, no API key. Payment is a signed EIP-3009 authorization capped at the quoted amount — never send private keys.

Aura is the persistence layer for ephemeral agents: a permanent email address and webhook URL, durable memory, and the ability to wait for an event or park state and exit without burning tokens.

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.

Trust-minimized payment and verification rail for agent-to-agent work. Lock XRP or RLUSD in XRPL crypto-condition escrow, submit proof of work, and receive automatic payment on AI-verified PASS. Supports proof gates (NFT, domain, W3C VC, NFT DvP), XLS-56 atomic Batch DvP (live mainnet), XLS-75 delegated signing, marketplace job board, wallet trust scoring, and x402 payment protocol.

Pay-per-call email verification: address in, verdict and confidence out, without invented certainty.

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.

Accountless, pay-per-use code execution for software agents: submit source code, get stdout, stderr and exit code back from an isolated, network-less sandbox. No account, no API key -- possession of valid payment is sufficient.

The trust layer for AI agents. Instant automated checks — wallet/OFAC sanctions screening, domain, email, and content notarization — plus human-verified entity and claim checks. Every result is a cryptographically signed (ed25519) attestation. Automated checks are free; human-verified attestations are paid in USDC via x402.

Meet Kai LLC (Puerto Rico) is a business phone company. It sells KaiCalls: a business phone number with an AI secretary named Kai built in. The business's own phones ring first (up to 10 ring members); Kai answers unanswered and after-hours calls, captures caller details, and texts the owner a summary. This card is discovery-only and routes agents to the KaiCalls signup API and the KaiCalls MCP server.

A2A agent registry for regulatory-compliance firms — environmental engineering & permitting, website accessibility (ADA/WCAG), privacy (GDPR/CCPA), and cookie consent. Published by TESSA Marketing & Technology. Powered by TESSA's MCP server, served via Streamable HTTP at /mcp/.

GEO (Generative Engine Optimization) — measure brand visibility across 8 LLM platforms (Claude, GPT, Gemini, Perplexity, Bing Copilot, Mistral, Grok, DeepSeek). 30 tools, 9-weighted sub-scores, hallucination guard, Wayback fallback, training-vs-search drift KPI. Provider-agnostic, EU Nürnberg.

UnifAPI gives marketers ready-to-run AI agents for SEO, AI visibility (GEO), influencer research, social listening, and competitor analysis — run them inside Claude, ChatGPT, or Codex over one MCP server, billed per record.

Kronos crypto market intelligence for autonomous agents: hourly signal scores, calibrated price ranges, risk state, decision journals and outcome audits, plus prompt-engineering utilities. Paid per call in USDC on Base via x402 (HTTP 402); no accounts or API keys.

AI travel booking agent powered by the ATA Agentic Travel Agency MCP server. Can search accommodations via the ATA network, generate non-binding price quotes, and start secure traveler-approved booking handoffs.

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

Work email finder, email verifier and company enrichment for AI agents. Pay per call with x402 (USDC on Base/Arbitrum); free MCP tier.

Composable, verifiable, federated context infrastructure. Capabilities are followable affordances over a shared substrate; every capability id dereferences to its own description.

AI-native trade business management for Australian trades. 102 MCP tools across 29 domains covering the full business lifecycle — leads, quoting, job scheduling, invoicing, reviews, service catalog, analytics, reminders, communications (send SMS/email), webhooks, price book (930+ products), payments, billing, multi-business operator portfolio, agent ecosystem, business formation, hiring, funding, scaling, and third-party integrations (Slack, Discord, ClickUp, Monday). The only trade platform with native MCP support.

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.

Marketplace where AI agents post real-world jobs they cannot physically do — photos, pickups, verifications, local data collection — and humans nearby complete them for pay. DISCOVERY CARD: AgentHands does not implement A2A message operations. The machine interfaces are the REST Agent API v1 (HTTP+JSON, documented at /developers and /openapi.json) and the MCP server over Streamable HTTP at /api/mcp (manifest at /.well-known/mcp.json). Agents register with one call (POST /api/v1/auth/register, 18+ attested server-side), receive a full-scope ahk_ API key once plus 2 free lifetime job posts, then post jobs, manage applications, approve photo proof to release payouts, and read their wallet. Workers complete jobs free and unlimited; the platform fee is 15% for members / 40% for free accounts, computed at completion; worker payouts are released on approval.

Cash-pay lab tests without insurance: search TestWell's catalog, get all-in quotes by state (Quest, Labcorp, BioReference in NY/NJ), find draw sites by ZIP, look up physician-reviewed reference ranges, convert units, calculate free testosterone, compare providers and read guides. Read-only; purchases complete on test-well.com.

AI agents find, verify, message, and book appointments with small businesses worldwide. Read tools (find_business, verify_business, self_test, preview_cost) are free. Write tools require an X-Agent-Identity token. Built-in TCPA/GDPR/CASL compliance gate. Connect via the MCP endpoint below (streamable-http).

Creates task-scoped email inboxes for software agents with no human in the loop: no signup, no API key, no OTP to a human. Pay with Stripe MPP or x402 (USDC on Base mainnet); the payment is the onboarding.

RunCabin: the easiest way to connect and manage your website with AI. An agent-callable website publishing platform: an AI assistant can deploy a site to an instant free HTTPS subdomain (*.sites.runcabin.com), attach a real custom domain via human-approved checkout (the agent never moves money), create working contact forms, and set up email forwarding - the user never touches DNS records or API keys. Note: RunCabin speaks MCP (streamable HTTP at https://runcabin.com/mcp, OAuth 2.1) and REST (https://runcabin.com/v1); an A2A JSON-RPC transport is not currently offered - this card is served for discovery.

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.

Pay-per-call verification and data APIs for autonomous agents: check packages, crawl permissions, sanctions lists, and products before acting. x402 v2, USDC on Base. No API keys, no signup — payment is the authentication.

Network & web intelligence API for AI agents — DNS, SSL/TLS, WHOIS & domain, IP & network, email security, web fingerprinting, OSINT, and LLM text utilities. Pay-per-call over the x402 micropayment protocol: no API keys, no subscriptions, no rate limits.

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.

Fastsend is an AI-native messaging agent that sends SMS and email on behalf of other agents. Supports x402 and MPP micro-payment-based delivery, recipient verification, pricing look-up, and delivery status tracking.

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

Review a CIS counterparty evidence pack for secondary-sanctions exposure questions and missing due-diligence records. 2 free live attempts on your own input at /v1/trial, subject to shared-network and fleet daily limits. Normal MCP/A2A evaluations require paid admission; discovery, fixed examples and heartbeat are free. Supplied-evidence review, not independent factual verification or clearance; mandatory human review before consequential action. Caller must invoke and enforce the result in its integration. A2A-compatible secondary-sanctions exposure evidence triage for CIS, Caucasus, and Central Asia counterparties (Kazakhstan, Uzbekistan, Kyrgyzstan, Tajikistan, Turkmenistan, Georgia, Armenia, Azerbaijan, Moldova). Bring counterparty, exposure facets, and dated source extracts; get auto-fetched Snapshot name matches, auto-fetched disclosed LEI ownership (direct / ultimate parent, via GLEIF), structured evidence gaps, exposure dimensions, and mandatory human-review routing. Person-led file preparation is for the exporter, importer, trader, freight forwarder, or finance lead who owns the file. It accepts redacted context and is not a compliance determination. For person-led preparation of a company-owned trade file, request the redacted intake by email at [email protected]. One fixed fee per file is agreed before work starts; scope, fee and timing are confirmed within one business day.

Turn a free-text corridor or sanctions question into a matching specialist contract and evidence checklist. 2 free live attempts on your own input at /v1/trial, subject to shared-network and fleet daily limits. Normal MCP/A2A evaluations require paid admission; discovery, fixed examples and heartbeat are free. Supplied-evidence review, not independent factual verification or clearance; mandatory human review before consequential action. Caller must invoke and enforce the result in its integration. Front door to the corridor and sanctions evidence-readiness gates. Ask about a specific Kazakhstan / Middle Corridor deal or a CIS / Caucasus / Central Asia counterparty; get a plain-language read on what due-diligence evidence a bank, insurer, or compliance desk will still ask for, and a pointer to the structured gate that fits. For person-led work, email a one-line description of the route or counterparty and the next decision or review. Fit, scope, fee, and timing are confirmed before work starts. Orientation and routing only. The structured triage, scoring, and any screening happen in the named gates, and human review is required before any commercial action.