HPP x402 MCP Bridge

MCP bridge for autonomous x402 payments in HPP USDC.e — discover and pay for services per call.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "hpp-x402-mcp-bridge": {
      "command": "npx",
      "args": [
        "-y",
        "hpp-x402-mcp-bridge"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

@hpp-io/x402-mcp-bridge

The agent payment rail for HPP. A stdio MCP bridge + the hpp-x402 CLI that let Claude Desktop / Claude Code / Cursor / Windsurf / OpenClaw make autonomous HPP USDC.e payments over x402 — discover paid services, pay per call, within a spend cap. No API keys, no manual signing.

📖 Full documentation

hpp-io/x402-tools — the complete manual: how it works, every command, buyer and seller flows, payment schemes (exact / upto), wallet modes, and troubleshooting. This README is a quick reference.

Install

bash

# macOS / Linux
curl -fsSL https://raw.githubusercontent.com/hpp-io/x402-tools/main/install/install.sh | bash
# Windows (PowerShell)
irm https://raw.githubusercontent.com/hpp-io/x402-tools/main/install/install.ps1 | iex
# …or npm
npm install -g @hpp-io/x402-mcp-bridge

Needs Node 20+. On a headless box (no OS keychain) use setup --print-key — see the manual.

Quick start

bash

hpp-x402 setup --install claude-code   # create a wallet + register into your host
hpp-x402 fund                          # where to send USDC.e (gasless, no native gas)
hpp-x402 status                        # confirm it's wired

Restart your host and your agent can discover and pay for services. Browse and pay from the terminal too:

bash

hpp-x402 discover "price prediction"               # semantic search; your network only
hpp-x402 describe <id>                             # input args (schema + example) — no payment
hpp-x402 call <url-or-id> --body '{"hi":"there"}'  # pay + call — a URL, or an id from discover

Full command reference, selling (serve), schemes, and Safe mode → the manual.

Use it from an MCP host

The host spawns the bridge over stdio. A bare entry boots zero-config on HPP Sepolia with an auto-created keychain wallet:

JSON Config

{ "mcpServers": { "hpp-x402": {
  "command": "npx", "args": ["-y", "@hpp-io/x402-mcp-bridge"]
} } }

hpp-x402 install <host> writes this for you. Note: a bare npx @hpp-io/x402-mcp-bridge runs the MCP server (what the host wants) — for the CLI use npx -y -p @hpp-io/x402-mcp-bridge hpp-x402 <command>.

Host-facing tools

Tool	What it does
`wallet_address`	report your wallet address (to fund it)
`hpp_discover`	list/search the curated HPP directory (read-only)
`hpp_describe`	one service's input args — schema + example (read-only)
`hpp_call`	call a discovered service (HTTP/MCP/A2A); pays via your wallet
`x402_http_call`	pay + call any x402 HTTP endpoint
`pay_a2a_agent`	pay + message another A2A agent

Every paid call stays within your spend cap; discovery never holds funds or sees your keys.

Key env (all optional)

Var	Notes
`DELEGATE_PRIVATE_KEY`	auto-created in the OS keychain if unset
`HPP_NETWORK`	`eip155:181228` Sepolia (default) / `eip155:190415` Mainnet
`RESOURCE_SERVER_URL`	proxy one upstream MCP server (omit = local tools only)
`SAFE_ADDRESS` + `ALLOWANCE_MODULE_ADDRESS`	set both = Safe (governance) mode

Full environment reference + Safe/governance setup are in the manual.

Building an agent / SDK integration (LangChain, OpenAI function-calling, AgentKit, A2A)? See the runnable gallery → hpp-io/hpp-x402-agent-sample

License

Apache-2.0

Read the full README →View source on GitHub →

Related MCP Servers

View all in Finance & Fintech View all alternatives

Reviews

No reviews yet — be the first to share how this listing worked for you.

Frequently Asked Questions about HPP x402 MCP Bridge

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "hpp-x402-mcp-bridge": { "command": "npx", "args": ["-y", "HPP x402 MCP Bridge"] } }

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Technical Specs & Signals

CategoryFinance & Fintech

27Quality signal: Emerging · 27/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20

Documentation & tools11/30

Adoption & activity1/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

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HPP x402 MCP Bridge

MCP bridge for autonomous x402 payments in HPP USDC.e — discover and pay for services per call.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "hpp-x402-mcp-bridge": {
      "command": "npx",
      "args": [
        "-y",
        "hpp-x402-mcp-bridge"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

@hpp-io/x402-mcp-bridge

The agent payment rail for HPP. A stdio MCP bridge + the hpp-x402 CLI that let Claude Desktop / Claude Code / Cursor / Windsurf / OpenClaw make autonomous HPP USDC.e payments over x402 — discover paid services, pay per call, within a spend cap. No API keys, no manual signing.

📖 Full documentation

Install

bash

# macOS / Linux
curl -fsSL https://raw.githubusercontent.com/hpp-io/x402-tools/main/install/install.sh | bash
# Windows (PowerShell)
irm https://raw.githubusercontent.com/hpp-io/x402-tools/main/install/install.ps1 | iex
# …or npm
npm install -g @hpp-io/x402-mcp-bridge

Needs Node 20+. On a headless box (no OS keychain) use setup --print-key — see the manual.

Quick start

bash

hpp-x402 setup --install claude-code   # create a wallet + register into your host
hpp-x402 fund                          # where to send USDC.e (gasless, no native gas)
hpp-x402 status                        # confirm it's wired

Restart your host and your agent can discover and pay for services. Browse and pay from the terminal too:

bash

hpp-x402 discover "price prediction"               # semantic search; your network only
hpp-x402 describe <id>                             # input args (schema + example) — no payment
hpp-x402 call <url-or-id> --body '{"hi":"there"}'  # pay + call — a URL, or an id from discover

Full command reference, selling (serve), schemes, and Safe mode → the manual.

Use it from an MCP host

The host spawns the bridge over stdio. A bare entry boots zero-config on HPP Sepolia with an auto-created keychain wallet:

JSON Config

{ "mcpServers": { "hpp-x402": {
  "command": "npx", "args": ["-y", "@hpp-io/x402-mcp-bridge"]
} } }

Host-facing tools

Tool	What it does
`wallet_address`	report your wallet address (to fund it)
`hpp_discover`	list/search the curated HPP directory (read-only)
`hpp_describe`	one service's input args — schema + example (read-only)
`hpp_call`	call a discovered service (HTTP/MCP/A2A); pays via your wallet
`x402_http_call`	pay + call any x402 HTTP endpoint
`pay_a2a_agent`	pay + message another A2A agent

Every paid call stays within your spend cap; discovery never holds funds or sees your keys.

Key env (all optional)

Var	Notes
`DELEGATE_PRIVATE_KEY`	auto-created in the OS keychain if unset
`HPP_NETWORK`	`eip155:181228` Sepolia (default) / `eip155:190415` Mainnet
`RESOURCE_SERVER_URL`	proxy one upstream MCP server (omit = local tools only)
`SAFE_ADDRESS` + `ALLOWANCE_MODULE_ADDRESS`	set both = Safe (governance) mode

Full environment reference + Safe/governance setup are in the manual.

Building an agent / SDK integration (LangChain, OpenAI function-calling, AgentKit, A2A)? See the runnable gallery → hpp-io/hpp-x402-agent-sample

License

Apache-2.0

Read the full README →View source on GitHub →

Related MCP Servers

View all in Finance & Fintech View all alternatives

Reviews

No reviews yet — be the first to share how this listing worked for you.

Frequently Asked Questions about HPP x402 MCP Bridge

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "hpp-x402-mcp-bridge": { "command": "npx", "args": ["-y", "HPP x402 MCP Bridge"] } }

AllMCPs Directory Badge

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Showcase your server listing on GitHub or your project documentation. Embed this dynamic SVG badge to highlight official listing status and live engagement.

Badge Style:

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<a href="https://allmcps.com/mcp/hpp-x402-mcp-bridge"><img src="https://allmcps.com/api/badge/hpp-x402-mcp-bridge?style=directory" alt="HPP x402 MCP Bridge on AllMCPs" /></a>

Technical Specs & Signals

CategoryFinance & Fintech

27Quality signal: Emerging · 27/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20

Documentation & tools11/30

Adoption & activity1/15

Community engagement0/10

★ Spotlight Slot

Feature Your MCP Server

Get maximum visibility for your server across our directory, search results, and detail pages.

Spotlight Your Server

Own this project?

Free dofollow backlink: add your website and place the AllMCPs badge on it — no claim needed. We detect it automatically and keep it verified as long as the badge stays live.

Claim & get free dofollow

Share & Embed

Add our SVG badge (dark/light directory styles) or embeddable widget to your site.

Explore more

More in 💰 Finance & Fintech →Best MCP servers for Finance & Fintech →Alternatives to HPP x402 MCP Bridge →Install in Claude Desktop Install in Cursor Install in VS Code