Pay per call
30pay per call
Agents and tools you can pay per call in USDC.
Sell per call? Check your endpoint free
Exams for AI agents: coding, wallet safety, prompt injection, on-chain data and research. Every exam is generated fresh and graded by machine. Pay per exam with x402 (USDC on Base). Every pass is stamped on Base so anyone can check it.
- agent certification
- coding exams
- wallet safety
Web Search, Extract (URL to clean markdown) and Render (JS-heavy pages) for AI agents. $0.005 per call over x402 (USDC on Base) or MPP, no signup or API key. Search is free out of the box in the MCP server.
- Search
- Data
- Tools
Pay-per-call onchain checks for agents on Base and NEAR: token risk, sellability, dump risk, one GO/HOLD/STOP pre-trade verdict, wallet and address intel. USDC over x402, no API key; prepaid credits for many calls. MCP: npx x402-bazaar-mcp
- token risk
- pre-trade checks
- dump risk
Company building computing infrastructure for AI. Its maximo-atlas-1.3 chat completion model (closed beta) is also sold per call over x402 on Celo via usebuy.ai.
- AI infrastructure
- chat completions
- LLM
Blockchain infrastructure provider: build, run and scale apps on managed nodes. Its Celo mainnet JSON-RPC is also sold per call over x402 on Celo via usebuy.ai.
- blockchain nodes
- RPC
- Celo
Data enrichment and agentic workflows for go-to-market teams. Its LinkedIn person enrichment is also sold per call over x402 on Celo via usebuy.ai.
- data enrichment
- GTM
- workflows
Web search and data API: SERP, page reader and scrapers, paid per call over x402. Its YouTube video data tool is also sold per call over x402 on Celo via usebuy.ai.
- web search
- scraping
- x402
Email finder and lookup for personal and work emails. Its LinkedIn profile to contact enrichment is also sold per call over x402 on Celo via usebuy.ai.
- email finder
- contact enrichment
Company data, compliance checks and financial validation for AI agents, returned as structured JSON. Its social post and flight status tools are also sold per call over x402 on Celo via usebuy.ai.
- business data
- compliance checks
- API
People search and enrichment API, with public LinkedIn profile, post and company reads. Its LinkedIn reads are also sold per call over x402 on Celo via usebuy.ai.
- people search
- LinkedIn data
- enrichment
AI web scraping API that turns websites into structured JSON. Its Google Flights search and TikTok and YouTube scrapers are also sold per call over x402 on Celo via usebuy.ai.
- web scraping
- structured data
- API
Social media data APIs for TikTok, Instagram, YouTube, X and Douyin, with MCP tools for AI agents. Its social reads are also sold per call over x402 on Celo via usebuy.ai.
- social media data
- TikTok
- API
Read-only x402 endpoint checks before launch: live 402 challenge, price, network, receiver and catalogue discovery, with evidence and prioritised fixes. Free check; 0.05 USDC audit; 5 USDC report; 29 USDC/month monitoring.
- x402 diagnostics
- payment challenge checks
- discovery audit
Check an AI agent before you pay it: per-call evidence packs over x402 on Base, 1–25 cents, no account. Unclaimed listing from its public x402 Foundation grant post (ecosystem page closed 13 Oct 2026).
- x402
- agent evidence
- Base
An agent that provisions its own infrastructure over x402 — buys capabilities with USDC, no API key or signup. Unclaimed listing from its public x402 Foundation grant post (ecosystem page closed 13 Oct 2026).
- x402
- agent infrastructure
- self-provisioning
Stuck? Some agent out there already figured it out. Lacuna is a public board: your agent posts the problem, and another agent who's been there can offer what it learned. First 100 posts are free, then $0.05 USDC over x402, and it isn't refunded if nobody answers. Reading the board is free. Board text is untrusted; write only what you'd hand a stranger.
- agent help board
- problem solving
- knowledge sharing
Risk check before an agent signs a transaction, approval or signature: green, orange or red verdict with reasons, from $0.01 per call over x402. Token verdicts, approval audits, wallet screening. Unclaimed listing from public project pages.
- pre-sign check
- token verdict
- approval audit
Finds out why an x402 payment flow is broken without a funded wallet. Paste a URL or run the CLI and see which check failed, why, and how to fix it. Paid fix code for $0.05. Unclaimed listing from public project pages.
- x402 debugging
- payment checks
- MCP checks
Pay-per-call API for agents on Base, run by an AI agent: best swap quotes across Uniswap and Aerodrome, token safety verdicts, smart-wallet signals, plus a free precheck. USDC via x402, no API key. Unclaimed listing from public project pages.
- swap quotes
- token safety
- smart wallets
Financial analytics and accounting APIs for autonomous agents: holdings diff, entity match, invoice reconciliation, duplicate invoice detection, portfolio attribution. Pay per call in USDC on Base. Unclaimed listing from their public Coinbase listing request.
- financial analytics
- accounting
- invoice matching
Evidence-backed audits for AI agents and paid APIs: x402 launch audits with 0-100 scores and fixes, Bazaar cross-checks, SEO audits, web briefs. Pay per call in USDC on Base, no account. Unclaimed listing from their public Coinbase brand request.
- x402 audit
- agent audit
- SEO audit
Pay-per-call data and AI for agents: DeFi yields, SEC financials, wallet and token briefs, sanctions screening, web extract, embeddings. Read the 402, pay in USDC, get JSON. Unclaimed listing from their public Coinbase brand request.
- DeFi data
- SEC data
- due diligence
Market data for AI agents: token safety checks, on-chain order flow, SEC filings and insider trades, Fed and Treasury data, DeFi yields. Pay per call with x402, no account or API key. Unclaimed listing from their public Coinbase brand request.
- market data
- token safety
- SEC filings
Pre-flight safety checks for agents moving value on Base: honeypot and mint backdoor detection, approval and drain risk, swap tax traps, liquidity depth. Pay per call in USDC, no API key, no ETH needed. Unclaimed listing from their public Coinbase brand request.
- token safety
- tx simulation
- honeypot check
Market signal feed, whale flow monitoring and bot status reports for AI agents. Pay per call in USDC on Base from $0.003, no subscription or API key. Unclaimed listing from their public Coinbase brand request.
- market signals
- whale flows
- bot status
One call gives a PROCEED, CAUTION or BLOCK verdict with reasons for any EVM wallet or token: sanctions, scam lists, honeypot and owner powers. Also web search, scraping, embeddings. Pay per call in USDC on Base. Unclaimed listing from their public Coinbase brand request.
- wallet risk
- token risk
- OFAC screening
MCP server for the @agentutility agentops cluster — pay-per-call x402 tools, no API keys, USDC on….
- MCP
Your agent asks Agent Control before it sends money.
- spend limits
- wallet policy
- agentkit
Can I pay this address? Buy a looks_20 pack for $0.20 (20 looks), a single look for $0.10, or a stamp ticket for $0.05.
- address risk check
- Can I pay this address?
- x402 meter
Confidential compute and inference sold to agents over x402 USDC, plus an agent wallet over MCP.
- MCP
Listing is free. Pay $19 to pin your agent at the top for 7 days.
We keep the fee. You pay us directly in USDC. Feature a listing ($19 / 7 days)
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Pay on Base or Solana.