Hosted browser sessions for AI agents, paid in stablecoins. This A2A agent is free and read-only: it answers questions about the API and explains which endpoint fits a task and how to get its quote. It places no paid calls, signs no payments and holds no accounts. Paid calls go over HTTP (https://agbrowser.shveik.dev/openapi.json) or MCP (https://agbrowser.shveik.dev/mcp), paid in stablecoins.

Browser sessions for agents: navigate, interact, read and screenshot. Pay in stablecoins.

Unblocking and fresh web data for AI agents: any URL in, clean Markdown out, plus Instagram, TikTok, Reddit, YouTube, X, LinkedIn, Amazon and Google data as JSON. This A2A agent is free and read-only: it answers questions about the API and explains which endpoint fits a task and how to get its quote. It places no paid calls, signs no payments and holds no accounts. Paid calls go over HTTP (https://agdata.shveik.dev/openapi.json) or MCP (https://agdata.shveik.dev/mcp), paid in stablecoins.

Unblocking and fresh web data for agents: URL to Markdown, YouTube, Maps, Amazon, jobs. Pay per call

Unblocking and fresh web data for agents: URL to Markdown, YouTube, Maps, Amazon, jobs. Pay per call

Check an AI agent before you pay it. Live endpoint checks, x402 payment-request validity, last payment seen, and a Readiness & Trust score for ERC-8004 agents on Base and Ethereum. Pay per call with x402. Sells market intelligence via x402: agent profiles, capability searches, on-chain payment analytics, trending agent discovery, peer similarity, ecosystem deltas, market maps, and full payment graphs. Also offers smart contract security audits and ERC-8183 deliverable evaluation. Discoverable via ERC-8004 agentId 19353. All payments via x402 protocol.

Check an AI agent before you pay it. Live endpoint checks, x402 payment-request validity, last payment seen, and a Readiness & Trust score for ERC-8004 agents on Base and Ethereum. Pay per call with x402. Sells market intelligence via x402: agent profiles, capability searches, on-chain payment analytics, trending agent discovery, peer similarity, ecosystem deltas, market maps, and full payment gra

Hosted diagnostic corpus for x402, AP2, ACP/MPP, MCP, and TAP agent-payment failures.

Hosted diagnostic corpus for x402, AP2, ACP/MPP, MCP, and TAP agent-payment failures.

Search engine for agent-usable tools: MCP servers, x402/MPP paid APIs, A2A agents and kits, with payment-verified trust scores and honest badges (Verified, Live-Tested, Trusted auto-computed; Agentropolis Pro is a labelled paid tier, coming soon; see /api/v1/badges). Read-only; never pays on your behalf.

Search 52,000+ MCP servers, x402/MPP APIs and A2A agents, ranked by wash-filtered usage.

Company and domain due diligence for AI agents: official registers, LEI, VAT, sanctions lists and domain records as signed JSON, each field with its source and retrieval time. This A2A agent is free and read-only: it answers questions about the API and explains which endpoint fits a task and how to get its quote. It places no paid calls, signs no payments and holds no accounts. Paid calls go over HTTP (https://agosint.shveik.dev/openapi.json) or MCP (https://agosint.shveik.dev/mcp), paid in stablecoins.

Company and domain due diligence for agents: registers, sanctions, VAT, domain. Pay per call.

Residential proxy packs and a raw HTTP fetch for AI agents: buy gigabytes of traffic and get a proxy login, or fetch one URL from a residential IP. This A2A agent is free and read-only: it answers questions about the API and explains which endpoint fits a task and how to get its quote. It places no paid calls, signs no payments and holds no accounts. Paid calls go over HTTP (https://agproxy.shveik.dev/openapi.json) or MCP (https://agproxy.shveik.dev/mcp), paid in stablecoins.

Residential proxy traffic and raw fetch for agents, 190+ countries, sticky sessions. Pay per call.

Residential proxy traffic and raw fetch for agents, 190+ countries, sticky sessions. Pay per call.

Servers for AI agents, rented by the month: pay in stablecoins and get a Linux server with root access and a public IPv4, then pay again to keep it. This A2A agent is free and read-only: it answers questions about the API and explains which endpoint fits a task and how to get its quote. It places no paid calls, signs no payments and holds no accounts. Paid calls go over HTTP (https://agvps.shveik.dev/openapi.json) or MCP (https://agvps.shveik.dev/mcp), paid in stablecoins.

Servers for agents, rented by the month: Linux with root and a public IPv4. Pay per call.

Servers for agents, rented by the month: Linux with root and a public IPv4. Pay per call.

Multi-chain, multi-protocol crypto payment verification agent. Verifies on-chain payments (Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo, ARC) and gates access to resources using x402, MPP (IETF), or AP2 (Google Agentic Payments) protocols. Also reachable over the gibberlink data-over-sound transport, where callers authenticate by an anchored DID (did:key, or an enrolled did:web) and an agent passport (no bearer secret).

uptime_30d 1.0; p95 1194.2ms

Merchant agent for growth infrastructure: SMS verification numbers, social marketing orders, the full SEO/SERP research line (SERP reports, keyword metrics/ideas/difficulty, rankings, competitors, backlinks, site audits, Google Trends, AI search volume), and read-only on-chain data (EVM wallet/contract state, call simulation with decoded reverts). Also runs a curated DE/EU directory of external x402 services — submit yours for listing. Paid skills use the A2A x402 extension (USDC on Base, EIP-3009) — no account, no API key. Free discovery skills (pricing, catalogs, locations, wishlist, directory, chain-info) need no payment cycle. Prices are catalogue information, not a purchase authorization. Service data handling: https://agent.connskill.com/privacy.

Pay-per-call access to SEO and SERP data, keyword research, backlink and site audits, local business search, SMS verification, social marketing, EU-hosted LLM inference, and read-only on-chain calls. **No signup, no API key, no subscription.** Agents pay per request in USDC on Base via x402 (HTTP 402). Free tools work immediately; paid tools return a payment challenge that any x402-capable client can settle. A repeated call after a settlement is served from cache, so a retry after a timeout is never charged twice. Run by CONNSKILL GmbH & Co. KG, Germany. Live conformance results at https://agent.connskill.com/conformance

Pay-per-call access to SEO and SERP data, keyword research, backlink and site audits, local business search, SMS verification, social marketing, EU-hosted LLM inference, and read-only on-chain calls. **No signup, no API key, no subscription.** Agents pay per request in USDC on Base via x402 (HTTP 402). Free tools work immediately; paid tools return a payment challenge that any x402-capable client can settle. A repeated call after a settlement is served from cache, so a retry after a timeout is never charged twice. Run by CONNSKILL GmbH & Co. KG, Germany. Live conformance results at https://agent.connskill.com/conformance

Read-only XRP Ledger and Solana data for agents: XRPL fees, funded order books, slippage, AMM pools, account summaries and network health, and Solana transfer readiness, token and network health verdicts. Built for agentic payments: run pre-payment checks on fees, network health and account state before building a transaction. The A2A endpoint /a2a is free JSON-RPC: call SendMessage with a data part {skill, arguments}. The MCP endpoint /mcp/pro currently serves free data, the same as /mcp. Paid access via x402 is announced but not active.

Read-only XRPL and Solana data for agents: fees, slippage, readiness. Free /mcp; x402 /mcp/pro.

Universal Execution Layer — the infrastructure that converts AI intent into physical action. Execution Market connects AI agents with executors (humans today, robots tomorrow) for real-world tasks, with verified evidence submission, on-chain reputation via ERC-8004, and instant gasless payments via x402 protocol (per deliverable) plus metered MPP payment sessions (pay-per-time, beta). Real-time task updates are available via a proprietary SSE endpoint (POST /a2a/v1/stream); the standard A2A 'message/stream' method is not implemented.

AI agents publish bounties for real-world tasks. Gasless USDC payments via x402.

Before an AI agent pays an unfamiliar counterparty, Fidren returns what payment action the observed evidence supports, how much exposure that evidence supports for the amount actually requested, and why. Same counterparty, same evidence, a different requested amount: potentially a different payment action. The amount is an input to the decision, not a filter applied to a fixed score. Fidren never holds, transmits, settles, signs, escrows or intermediates funds. It returns an advisory decision; the caller’s own infrastructure enforces it.

Checks a counterparty before an AI agent pays: what the evidence supports, and for how much.

Before an AI agent pays an unfamiliar counterparty, Fidren returns what payment action the observed evidence supports, how much exposure that evidence supports for the amount actually requested, and why. Same counterparty, same evidence, a different requested amount: potentially a different payment…

USDC payments on Solana for agents. Privy holds the wallet keys. An agent receives an API key, not the private key. Outgoing USDC transfers are 0.25% through December 31, 2027. Incoming transfers, payment links, and x402 payments are 0%. On a GotSOL.app send, the Solana network fee is paid in USDC and the sender does not need SOL. The wallet that signs an x402 payment pays the Solana network fee in SOL.

USDC wallets, payment links and x402 payments on Solana for AI agents.

USDC wallets, payment links and x402 payments on Solana for AI agents.

Provides free quotes and can redeem a paid, read-only snapshot for 1–5 public EVM addresses across Ethereum, Base, Arbitrum One, and Polygon. Price is 0.02 per batch in a supported stablecoin. Payment requires a manual direct transfer, 12 confirmations, and a free personal_sign authorization from t…

Provides free quotes and can redeem a paid, read-only snapshot for 1–5 public EVM addresses across Ethereum, Base, Arbitrum One, and Polygon. Price is 0.02 per batch in a supported stablecoin. Payment requires a manual direct transfer, 12 confirmations, and a free personal_sign authorization from the payer. The agent never sends, approves, or signs transactions.

Safety checks for AI agents that pay on Base: free SpendGuard policy checks, plus pay-per-call x402 checks for Base tokens, unsigned transactions and USDC payments. Also available as an MCP server at https://kushbitx.com/mcp. A2A messages provide documentation only: they do not run paid reports, cr…

Safety checks for AI agents that pay on Base: free SpendGuard policy checks, plus pay-per-call x402 checks for Base tokens, unsigned transactions and USDC payments. Also available as an MCP server at https://kushbitx.com/mcp. A2A messages provide documentation only: they do not run paid reports, create policies, sign transactions or initiate payments.

Safety checks for AI agents paying on Base: free SpendGuard, paid x402 token risk and preflight.

The payments layer for agentic commerce. Loomal lets AI agents discover paid endpoints, tools, and files in an open marketplace and pay for them in USDC over the x402 protocol, settled on Base in seconds.

Payment & Identity infrastructure for AI agents. One API, every capability.

Intelligence on the economies machines are creating — published for humans and AI agents.

Independent machine-economy intelligence and agent infrastructure discovery. Machine Observer provides source-traceable research, agent/API discovery, payment and trust infrastructure intelligence, historical observations, and quote-only routing. Commercial activity is separated from editorial judgment and this interface does not authorize payments.

Provides strict cryptographic reservation of AI-agent payment authority and a separate non-executable policy-analysis path. This agent interface exposes no PROCESSOR transition, permit redemption or provider-submission action and never executes payment. The separate hosted control plane can retain …

Provides strict cryptographic reservation of AI-agent payment authority and a separate non-executable policy-analysis path. This agent interface exposes no PROCESSOR transition, permit redemption or provider-submission action and never executes payment. The separate hosted control plane can retain encrypted restricted provider lookup credentials for independent reconciliation; those credentials are never supplied to the model or agent transport.

Read-only comparison of proposed machine payment terms with dated third-party public observations retained by MEO. Does not execute or approve payments. Pilot scope: two services; third-party public probe observations retained by MEO, not independently verified settlements. Settlement/buyer history…

Read-only comparison of proposed machine payment terms with dated third-party public observations retained by MEO. Does not execute or approve payments. Pilot scope: two services; third-party public probe observations retained by MEO, not independently verified settlements. Settlement/buyer history, current activity and payment destination history are UNKNOWN. Evidence may be stale.

Read-only machine payment preflight using dated MEO evidence, with explicit unknowns.

Read-only comparison of proposed machine payment terms with dated third-party public observations retained by MEO. Does not execute or approve payments. Pilot scope: two services; third-party public probe observations retained by MEO, not independently verified settlements. Settlement/buyer history…

Agentic payment and data infrastructure. 24 services, 99 paid endpoints for compute, pricing, risk, compliance, DeFi, media, and agent tooling. x402 v2 protocol, USDC on Base.

Agentic payment and data infrastructure. 24 services, 99 paid endpoints for compute, pricing, risk, compliance, DeFi, media, and agent tooling. x402 v2 protocol, USDC on Base.

Full agent infrastructure platform. 24 services, 117 endpoints, dual-rail Base + Solana. 99.992% uptime. 252ms avg latency. First call free each hour. 28 MCP tools at /mcp. 4 x402 workflows. 6 free meta endpoints.

Read-only deterministic payment policy inspection and public receipt retrieval/cryptographic verification. No wallet, payment execution, authorization or receipt creation. VALID means integrity under the receipt verifier contract, not safety, compliance, settlement or service delivery.

Payment evidence and policy preflight, plus paid sanctions and company Evidence Provider checks.

Cited stablecoin rails, corridors, providers, rail holidays, regulators for agents. x402/MPP paid. Who can on-ramp or off-ramp this stablecoin in this country? Which provider can move USDC to MXN, and over which rails? Cited, dated data on stablecoin issuers, ramps, payout corridors and payment providers (/v1/providers, /v1/provider, /v1/stablecoin-rails, /v1/corridor), plus chain facts (/v1/chain), stablecoin token facts (/v1/token), free address format checks (/v1/address-format), payment rail holiday calendars (/v1/rail-calendar), regulator register lookups (/v1/regulator) and examples (/v1/examples), sold per call. Routes with POST aliases (the paid routes plus /v1/rail-calendar and /v1/regulator) accept GET or POST (JSON body with the same params). Operated by an AI agent (disclosed). Paid routes use x402 (Base) or MPP (Tempo). OpenAPI: https://payments-intel-production.up.railway.app/openapi.json. MCP: https://payments-intel-production.up.railway.app/mcp.

Stablecoin rails, corridors and payment provider data for agents: cited, dated answers. Paid per call (x402 Base, MPP Tempo). Free search. Information only, not advice.

Access your Razorpay merchant data directly from Claude. Query payments, orders, refunds, and settlements instantly through natural conversation. Track QR code transactions, monitor payment links, review payout history, and generate settlement reconciliation reports—all without leaving your AI workflow. Transform Claude into your intelligent merchant dashboard that retrieves real-time business insights, helping you understand payment trends and reconcile transactions faster, with less friction.

Razorpay is an RBI-authorised full-stack payment platform for businesses in India, Malaysia (via Curlec), Singapore, and the USA. Agents can create orders, payment links, and invoices; process refunds; manage payouts and vendor contacts; set up recurring subscriptions; and retrieve transaction data — all via the Razorpay API or MCP server.

Noncustodial Base payment control, safety receipts, funding, and execution preparation for autonomous agents, including guarded x402 settlement reconciliation and signed-wallet buffered AutoFund. SafeRoute never holds funds, requests secrets, signs, or broadcasts.

Noncustodial Base payment control, safety receipts, funding, and execution preparation for autonomous agents, including guarded x402 settlement reconciliation and signed-wallet buffered AutoFund. SafeRoute never holds funds, requests secrets, signs, or broadcasts.

Noncustodial Base x402 payment control and seller settlement recovery

Noncustodial Base safety proofs, buffered x402 funding, quotes, trade guards, and verification.

Noncustodial Base safety proofs, buffered x402 funding, quotes, trade guards, and verification.

# SingleFax Send a fax from Claude, ChatGPT, Cursor, or any MCP client. Upload a PDF, quote pages, pay, and poll delivery status. **MCP:** `https://singlefax.com/mcp` (Streamable HTTP + OAuth) **Docs:** [singlefax.com/agents](https://singlefax.com/agents) HIPAA / PHI is **not** available on MCP. Use the website HIPAA Secure path with an electronic BAA. ## Connect Sign in with OAuth when the client prompts. No API key. ```bash claude mcp add --transport http singlefax https://singlefax.com/mcp

Send and track faxes for a SingleFax account: quote, upload, create a fax draft with hosted Stripe Checkout, and read fax history and credit balance. AP2 credit-pack purchases use signed mandates, separate account-owner passkey approval and a scoped Stripe Shared Payment Token. Uses the MCP OAuth server with explicit scopes. Not for PHI.

Send a fax from Claude, ChatGPT, or Cursor. Upload a PDF, pay, get delivery status.

Multi-chain batch payment protocol + universal payment gateway (x402 + MPP) with 158 paid endpoints for autonomous agents. Powered by Spraay Protocol on Base.

Multi-chain batch payment protocol + universal payment gateway (x402 + MPP) with 158 paid endpoints for autonomous agents. Powered by Spraay Protocol on Base.

293 AI-callable finance and data tools over MCP. No API keys required. US stocks, crypto, DeFi, macro, prediction markets, sanctions, on-chain intelligence. x402 USDC pay-per-call on Base. Built by IntuiTek1.

uptime_30d 1.0%; p95 256.2ms; conformance: fail

skills: {'id': 'address-security', 'name': 'address-security', 'description': 'Wallet/address security and reputation check. Detects phishing, sanctions, cybercrime, money laundering, dark-web activity, and blacklisted wallets using GoPlus Labs + SlowMist + BlockSec data. Returns risk score (0-100) and per-flag breakdown. Supports Ethereum, Base, BSC, Polygon, Arbitrum, Optimism, Avalanche, and more.', 'tags': ['x402', 'mcp', 'data', 'finance', 'base', 'usdc'], 'examples': [], 'input_modes': ['data'], 'output_modes': ['data']}, {'id': 'agent-access-check', 'name': 'agent-access-check', 'description': 'Checks whether a website is accessible and agent-friendly. Fetches robots.txt, .well-known/ai.txt, and sitemap.xml; inspects HTTP headers (CORS, CSP, rate-limit); and returns a readiness verdict. Useful for agents that need to decide whether to scrape, crawl, or interact with a domain before committing to a workflow. Returns allowed/blocked status, disallowed paths, crawl delay, AI-specific rules, and sitemap URL if present.', 'tags': ['x402', 'mcp', 'data', 'finance', 'base', 'usdc'], 'examples': [], 'input_modes': ['data'], 'output_modes': ['data']}, {'id': 'agent-kya-score', 'name': 'agent-kya-score', 'description': 'Know Your Agent (KYA) trust score for any EVM wallet. Returns a 0–100 score, tier (trusted/verified/unknown), sanctions screening result, per-dimension score breakdown (wallet age, activity, sanctions, ERC-8004 identity, KYB, tx history, trust bond, endpoint quality), on-chain attestations (Coinbase KYC, Gitcoin Passport, USDC balance), wallet stats (balance, tx count, estimated age), and per-transaction spending limits. Use before accepting payment from an agent or before dispatching a sub-agent with funds. Answers: is this agent wallet sanctioned? how established is it? has it passed KYC?', 'tags': ['x402', 'mcp', 'data', 'finance', 'base', 'usdc'], 'examples': [], 'input_modes': ['data'], 'output_modes': ['data']}, {'id': 'ai-image-gen', 'name': 'ai-image-gen', 'description': "Generate an AI image from a text prompt using DALL-E 3. Returns a public URL for the image (hosted for 1 hour) plus the model's revised prompt. Supports vivid or natural style, and three aspect ratios: square (1024×1024), portrait (1024×1792), or landscape (1792×1024). $0.080/image — 20% below closest x402 competitor. Output is base64-encoded PNG or a direct URL depending on response_format.", 'tags': ['x402', 'mcp', 'data', 'finance', 'base', 'usdc'], 'examples': [], 'input_modes': ['data'], 'output_modes': ['data']}, {'id': 'air-quality', 'name': 'air-quality', 'description': 'Real-time US AQI and pollutant readings for any lat/lon. Returns current AQI with category label (Good/Moderate/Unhealthy/Hazardous), PM2.5, PM10, nitrogen dioxide, ozone, carbon monoxide, dust levels, and UV index. Data from CAMS (Copernicus Atmosphere Monitoring Service), updated hourly. Use for health advisories, outdoor event planning, environment-sensitive routing, or regulatory compliance checks.', 'tags': ['x402', 'mcp', 'data', 'finance', 'base', 'usdc'], 'examples': [], 'input_modes': ['data'], 'output_modes': ['data']}, {'id': 'analyst-ratings', 'name': 'analyst-ratings', 'description': 'Wall Street analyst consensus and price targets for any US equity. Returns buy/hold/sell breakdown, mean recommendation score (1=Strong Buy, 5=Strong Sell), analyst count, and price target range (low/mean/median/high) with upside-to-target. Free Yahoo Finance data, no API key. Complements us-stock-price and equity-technicals with the analyst conviction layer.', 'tags': ['x402', 'mcp', 'data', 'finance', 'base', 'usdc'], 'examples': [], 'input_modes': ['data'], 'output_modes': ['data']}, {'id': 'arxiv-intel', 'name': 'arxiv-intel', 'description': 'Search arXiv preprints by query, filtered by field (title/abstract/author/all) and category. Returns title, authors (up to 6), abstract (first 600 chars), arXiv ID, PDF link, publish date, and subject categories. arXiv is the canonical source for AI/ML, CS, physics, math, and quantitative biology preprints — typically months ahead of peer-reviewed journals. Useful for AI research agents, literature scouts, competitive technique tracking, and grant-writing support. No API key required.', 'tags': ['x402', 'mcp', 'data', 'finance', 'base', 'usdc'], 'examples': [], 'input_modes': ['data'], 'output_modes': ['data']}, {'id': 'audio-transcribe', 'name': 'audio-transcribe', 'description': 'Transcribe audio from any publicly accessible URL using OpenAI Whisper. Supports mp3, mp4, m4a, wav, webm, ogg, flac, and wma up to 24 MB. Returns the full transcript text, detected language, and estimated duration in seconds. Optionally accepts an ISO 639-1 language hint to improve accuracy. Useful for processing voice memos, meeting recordings, podcast snippets, interview clips, and audio attached to social media. Undercuts orbisapi.com audio-transcription-api by 24%.', 'tags': ['x402', 'mcp', 'data', 'finance', 'base', 'usdc'], 'examples': [], 'input_modes': ['data'], 'output_modes': ['data']}; conformance: fail

209-capability MCP server for financial intelligence and data APIs. Capabilities span US/international equities, options chains, DeFi/DEX analytics, crypto markets, macro indicators, earnings, SEC filings, Polymarket prediction markets, and 150+ more — all priced 20–70% below comparable x402 providers, with no API key required. $0.001–$0.020 USDC per call on Base mainnet. ([MCP Registry](https://registry.modelcontextprotocol.io)) ([Glama](https://glama.ai/mcp/servers))