MCP server

x402 Micropayments MCP

io.github.kwizzlesurp10-ctrl/x402-mcp

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Pay-per-call US city property compliance and Base tx checks, paid in USDC on Base via x402.

Working at last checkAbout 4,652 tokens per request once connected20 tools

Website Source

https://x402-mcp.onrender.com/mcp/mcp

At a glance

Type: MCP server
Publisher: Not verified
Status: Working at last check
Tools: 20
Token cost: About 4,652 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to Cursor Add to VS Code VS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http x402-mcp https://x402-mcp.onrender.com/mcp/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.x402-mcp]
url = "https://x402-mcp.onrender.com/mcp/mcp"

Gemini CLI

{"mcpServers":{"x402-mcp":{"httpUrl":"https://x402-mcp.onrender.com/mcp/mcp"}}}

Cursor

{"mcpServers":{"x402-mcp":{"url":"https://x402-mcp.onrender.com/mcp/mcp"}}}

VS Code

{"servers":{"x402-mcp":{"type":"http","url":"https://x402-mcp.onrender.com/mcp/mcp"}}}

Antigravity

agy mcp add x402-mcp https://x402-mcp.onrender.com/mcp/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"x402-mcp","server_url":"https://x402-mcp.onrender.com/mcp/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"x402-mcp","server_url":"https://x402-mcp.onrender.com/mcp/mcp"}

Tools

a2a.resolve_card ~205 tokens
Discover and inspect an external Agent-to-Agent (A2A) node by domain or URL. Fetches .well-known/agent-card.json, validates protocol compatibility, checks for a2a-x402 and AP2 payment extensions, and extracts callable skills with pricing.
city.check ~296 tokens
Paid US city property compliance check (MCP seller x402). Unpaid calls return PaymentRequired with accepts; pay via _meta['x402/payment']. Prefer city.sample first. Price: $0.01 per call (x402, USDC on Base/Solana/Arbitrum).
city.list ~116 tokens
List US City Open-Data Compliance Network cities with paid_url, sample_url, and price. Call first, then city.sample, then city.check for the paid address lookup.
city.sample ~162 tokens
Get a free fixed-address property compliance sample for one US city code. Use before city.check to validate city_code and response shape without paying.
commerce.activate_pro ~268 tokens
Verify a Pro-tier x402 payment and unlock Pro quota limits for the agent. MCP-native: call without payment to receive x402 requirements in the tool result, then retry with _meta['x402/payment'] (@x402/mcp client). Legacy: pass PAYMENT-SIGNATURE + PAYMENT-REQUIRED after commerce.pro_requirements.
commerce.credits_requirements ~168 tokens
Build x402 payment requirements to buy a pack of per-use MCP tool credits. Next: pay those terms, then commerce.purchase_credits with the signature.
commerce.pro_requirements ~119 tokens
Build x402 payment requirements to purchase the Pro quota tier. Next: pay those terms, then commerce.activate_pro with the signature.
commerce.purchase_credits Moves money · ~273 tokens
Verify an x402 payment and add per-use tool credits to the agent. MCP-native: call without payment for x402 requirements, then retry with _meta['x402/payment']. Legacy: PAYMENT-SIGNATURE + PAYMENT-REQUIRED after commerce.credits_requirements.
ops.metrics ~167 tokens
Get host OS telemetry: CPU, memory, swap, disk, network, and an ok/warn/critical health verdict. Call to diagnose this MCP host; set include_processes=true for top memory processes.
pulse.base ~162 tokens
Get live Base Network Pulse: base fee, EIP-1559 projection, utilization, USD settlement cost, verdict. Call before settling on Base when you need a settle-now vs hold recommendation.
swarm.research ~266 tokens
Run the swarm agency: compose a research product from free inputs and list it for resale. Pass allow_paid_inputs=true only when buying upstream x402 services is intended.
swarm.revenue ~147 tokens
Get swarm composite economics: spend, composite sales, LTV:CAC, margins, per-source scores. total_revenue_usdc is swarm listings only; storefront.revenue_usdc is the full settled ledger. Call after swarm.research or swarm.settle to inspect realized economics.
swarm.settle ~242 tokens
Verify and settle a buyer's x402 payment for a listed composite product and record revenue. Call with product_id plus PAYMENT-SIGNATURE after the buyer pays.
x402.agent_card ~156 tokens
Return the A2A Protocol v1.0 Agent ID Card and MCP server card. Optional target_id filters to a skill id, name, or tag.
x402.build_seller ~626 tokens
Build seller-side x402 payment requirements for your own HTTP resource. Pass resource_url plus discovery_* fields to catalog the endpoint in Bazaar.
x402.discover ~272 tokens
Discover paid HTTP APIs in the x402 Bazaar via the facilitator catalog. Call this first to find a resource URL, then x402.probe and x402.pay_and_fetch.
x402.networks ~119 tokens
List supported settlement networks, facilitators, and x402 v2 header names. Call when choosing a preferred_network for x402.pay_and_fetch or x402.build_seller.
x402.pay_and_fetch Moves money · ~387 tokens
Pay USDC via x402 and fetch a protected HTTP resource in one call. Requires EVM_PRIVATE_KEY on this host; otherwise use x402.probe for a no-spend 402.
x402.probe ~290 tokens
Probe a URL for HTTP 402 PAYMENT-REQUIRED terms using the x402 client SDK. Use before x402.pay_and_fetch to inspect price, network, and payTo without spending.
x402.verify ~211 tokens
Verify an x402 PAYMENT-SIGNATURE against PAYMENT-REQUIRED terms via the facilitator. Call after a buyer presents a signature and before releasing paid content.

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