MCP connectors for ChatGPT

x402 Bazaar Rank

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Ranked search over 15k+ live x402 services by real 30-day usage; free top-5, paid depth via x402.

x402-data-gateway

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Paid x402 and MPP tools for agent discovery, payment safety, data, and DeFi.

x402 Discovery MCP

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Discover x402 APIs by capability, price & trust.

x402 Doctor

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Diagnose x402 seller endpoints: what is wrong with your 402 challenge, and how to fix it.

x402 economy tools

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Measured x402 ecosystem data, facilitator reliability, and live endpoint checks.

x402-endpoints

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x402 paid API tools for AI agents on Base: EU/global registries, crypto, wallet & agent trust.

Discover x402 paid APIs and inspect fresh payment requirements before authorizing spend.

Buy private git repos and agent skills with USDC over x402.

x402-list-mcp

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Find and vet x402 payment APIs before your agent pays one: uptime, price, on-chain volume.

x402-mcp

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Pay for HTTP APIs and charge for your own: x402 micropayments in USDC on Base.

x402 MCP Starter

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Free self-hosted x402 USDC billing for Cloudflare MCP servers, with a Base Sepolia test endpoint.

x402 Merchant Check

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Pre-payment merchant trust checks for x402 agents on Base and Solana.

Pay for APIs with USDC.

x402-payment-safety

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Authorize x402 payments before signing with request-bound, signed safety decisions.

x402-plaza-services

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Paid AI agent services for Claude, Cursor, and every MCP client: web scraping to JSON, CAPTCHA solving & Cloudflare bypass, agent code audits &…

• Scrape.To Json: Extract clean JSON from messy HTML
• Security.Audit Agent Code: Security audit for backdoors and data drains
• Credits.Buy Firewall: Buy 1000 prompt-injection scans

x402 Preflight

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Inspect and validate an x402 endpoint before an autonomous agent spends USDC.

x402-receipt-verifier

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Audits NEXUS's own x402 payment logs against its own delivery logs and issues a signed proof-of-deli

x402-seller — rug protection & safe-alpha for trading agents

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Rug-check & launch radar for trading agents: composite honeypot score, EVM+Solana, keyless x402.

x402-services

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The only x402 MCP server for Robinhood Chain (chainId 4663) - 147 onchain, trading & AI tools.

x402-solana

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x402 paid API tools for AI agents on Solana: crypto safety, market data, KYB/AML verification.

x402-suite

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Production Model Context Protocol (MCP) Suite of 12 Autonomous Security, Intelligence & Code Remediation Tools with sub-cent x402 protocol settlement on Base…

• Remediate.Code Patch: AST Code Patch & Vulnerability Remediation Generator: Generates ready-to-merge unified git diffs fixing security flaws, missing Schema.org tags, or performance bottlenecks. (Pric
• Signals.Intent Feed: Real-Time B2B Buying Intent & Web3 RFP Stream: Streams verified high-budget software and crypto buyer signals with confidence scoring and pre-drafted outreach angles. (Price: $0.9
• Audit.Smart Contract: Smart Contract Vulnerability & Invariant Security Audit: Automated deep invariant analysis for Solidity and Rust/Anchor contracts with CEI checks and severity breakdown. (Price:

x402-vend — WebIntel

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Pay-per-call web & EU business intelligence for AI agents (x402 USDC on Base).

x402 Web Extract

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Pay-per-use web extract, token prices, and wallet balances via x402 USDC micropayments.

x402nano

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Machine-payable prediction-market briefs and probability-change monitoring for AI agents.

x402tools

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10 pay-per-call tools for AI agents: QR, screenshots, DNS, OCR, PDF, email & more.

x402watch

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Wash-filtered intelligence for x402: categories, services, wash analysis, trends.

Xcatcher — Recent X Posts

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Fetch recent public X/Twitter posts by named handle for monitoring, comparison, OSINT, and research.

xDEO — Earnings Oracle

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Reputation-ranked analyst earnings estimates.

xestando

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Spanish SME suite: VeriFactu invoices, time clock, e-sign.

xfinlab

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Real-time market events, sentiment, and technical analysis as MCP tools, backed by real data.