Agenticpay

Name: Agenticpay
Author: krystiangw

by krystiangwversion 0.0.1i★ –iRuns on your computer

Registry nameio.github.krystiangw/agenticpay

Install

Overview

Description from the maker (original English)

x402 USDC paywall bridge for MCP — pay per tool call on Solana.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other
You need to fill in: AGENTICPAY_BRIDGE_KEYPAIR, AGENTICPAY_BRIDGE_TOOLS

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: AGENTICPAY_BRIDGE_KEYPAIR, AGENTICPAY_BRIDGE_TOOLS, AGENTICPAY_BRIDGE_NETWORK, AGENTICPAY_BRIDGE_RPC

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "agenticpay": {
      "command": "npx",
      "args": [
        "-y",
        "@agenticpay/mcp-bridge"
      ],
      "env": {
        "AGENTICPAY_BRIDGE_KEYPAIR": "your-value",
        "AGENTICPAY_BRIDGE_TOOLS": "your-value",
        "AGENTICPAY_BRIDGE_NETWORK": "your-value",
        "AGENTICPAY_BRIDGE_RPC": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add agenticpay --env AGENTICPAY_BRIDGE_KEYPAIR=your-value --env AGENTICPAY_BRIDGE_TOOLS=your-value --env AGENTICPAY_BRIDGE_NETWORK=your-value --env AGENTICPAY_BRIDGE_RPC=your-value -- npx -y @agenticpay/mcp-bridge

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "agenticpay": {
      "command": "npx",
      "args": [
        "-y",
        "@agenticpay/mcp-bridge"
      ],
      "env": {
        "AGENTICPAY_BRIDGE_KEYPAIR": "your-value",
        "AGENTICPAY_BRIDGE_TOOLS": "your-value",
        "AGENTICPAY_BRIDGE_NETWORK": "your-value",
        "AGENTICPAY_BRIDGE_RPC": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "agenticpay": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@agenticpay/mcp-bridge"
      ],
      "env": {
        "AGENTICPAY_BRIDGE_KEYPAIR": "your-value",
        "AGENTICPAY_BRIDGE_TOOLS": "your-value",
        "AGENTICPAY_BRIDGE_NETWORK": "your-value",
        "AGENTICPAY_BRIDGE_RPC": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

AGENTICPAY_BRIDGE_KEYPAIR secret required env
Solana keypair as 64-byte JSON array (the format `solana-keygen new` writes). The bridge signs each x402 payment with this keypair.
AGENTICPAY_BRIDGE_TOOLS required env
JSON array of paid tool definitions. Each entry: { name, description, url, inputSchema, headers? }
AGENTICPAY_BRIDGE_NETWORK env
CAIP-2 network identifier. Devnet: solana:EtWTRABZaYq6iMfeYKouRu166VU2xqa1
AGENTICPAY_BRIDGE_RPC env
Solana JSON-RPC URL

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account krystiangw, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32683 servers in this category
Published to the registry more recently than 8% of the other 32683 servers in this category
Basic checks equal to or better than 100% of the other 32683 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Agenticpay safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: AGENTICPAY_BRIDGE_KEYPAIR, AGENTICPAY_BRIDGE_TOOLS

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.0.1) reached the registry 6 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, MCP Server Autocad Lisp Helper

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

agenticpay

[Website](https://agenticpay-dev.github.io/) · Spend caps · npm

Get paid by AI agents. Open-source payment infrastructure for the MCP ecosystem - declare a price on any tool, agents pay in USDC over x402, settles on Solana in ~1.5 seconds.

No Stripe. No accounts. No API keys.

The full stack is here - SDK, CLI, paywall middleware, self-hosted x402 facilitator, and a live LLM agent demo. All TypeScript, MIT licensed.

Just want to test it? Point your mcp-server at our hosted devnet

facilitator: FACILITATOR_URL=https://agentpay-facilitator-e9b20a5fee6a.herokuapp.com

No setup needed.

Live demo

A real Claude Opus agent receives a task, decides which paid tools to use, pays autonomously via x402 micropayments on Solana, and answers the user.

$ pnpm --filter @agenticpay/two-agent-demo agent

Agent wallet: 3rHoEumCpH8EGrr6Lq2vBKeyec6h3yPRGj2nGG2FzEfX Server: http://localhost:4021 Facilitator: http://localhost:4022 ← our own Model: claude-opus-4-7 Task: Reverse the string 'agentpay rocks' and tell me how many words are in 'The quick brown fox jumps over the lazy dog'.

[turn 1] tool_use: reverse_string({"text":"agenticpay rocks"}) → paying $0.001 USDC ... ✓ paid + got result in 1596ms: {"result":"skcor yaptnega"} [turn 1] tool_use: word_count({"text":"The quick..."}) → paying $0.0005 USDC ... ✓ paid + got result in 1286ms: {"count":9}

Agent final answer:

Reversed string: skcor yaptnega
Word count: 9 words

=== payments summary === reverse_string $0.0010 USDC 1596ms word_count $0.0005 USDC 1286ms TOTAL $0.0015 USDC 2 calls

On-chain proof (Solana devnet):

Settled by our self-hosted facilitator: EsqzTG8id...Bnku
Earlier settle via x402.org: 2d2HcefgJ...vkqY

Why

The current AI agent stack assumes humans hold the credit card. That breaks the moment agents act on their own initiative - calling APIs, hiring sub-agents, paying for compute. You can't OAuth your way through it.

Stablecoin micropayments over HTTP fix it. agenticpay packages the missing ergonomics for the MCP ecosystem specifically: any tool can declare a price, any agent can pay it, and the whole pipeline - including the facilitator that actually submits the on-chain settlement - is open source and self-hostable.

Architecture

┌──────────────┐     1) HTTP request                    ┌─────────────┐

│ Claude / │ ────────────────────────────────────▶ │ mcp-server │ │ GPT agent │ 2) HTTP 402 + payment requirements │ (yours) │ │ │ ◀──────────────────────────────────── │ │ │ │ 3) signed USDC payload │ │ │ │ ────────────────────────────────────▶ │ │ └──────────────┘ └─────┬───────┘ │ verify+settle ▼ ┌──────────────────────┐ │ agenticpay facilitator │ │ (also yours, this │ │ repo, port 4022) │ └──────────┬───────────┘ │ submit ▼ Solana (USDC SPL, sub-cent fees)

You can also point mcp-server at the public x402.org/facilitator for testnet/devnet, or at Coinbase CDP for mainnet. We just made the self-hosted route easy.

Packages

Package	What it does
`packages/sdk`	TypeScript primitives: USDC transfers, wallet management, network config
`packages/cli`	`agenticpay` command - wallet, balance, send
`packages/mcp-server`	HTTP server with x402 paywall middleware. Each tool has a price.
`packages/facilitator`	Self-hosted x402 facilitator - verify + settle USDC payments on Solana. Pays SOL fees on behalf of agents.
`packages/eliza-plugin`	Eliza plugin - wraps paid HTTP endpoints as native Eliza Actions. Solana-native AI agents pay per tool call.
`packages/ai-sdk`	Vercel AI SDK helpers - drop paid tools straight into `generateText` / `streamText`.
`packages/mcp-bridge`	Real MCP server (stdio + `@modelcontextprotocol/sdk`) wrapping x402 paid tools. Drop into Claude Desktop / Cursor.
`examples/two-agent-demo`	Real Claude Opus agent paying for tool calls

Install

npm install @agenticpay/sdk           # Solana + USDC primitives

npm install -g @agenticpay/cli # agenticpay command npm install @agenticpay/mcp-server # paywalled HTTP server npm install @agenticpay/facilitator # self-hosted x402 facilitator npm install @agenticpay/eliza-plugin # Eliza plugin (Solana-native agents) npm install @agenticpay/ai-sdk # Vercel AI SDK paid tools npm install -g @agenticpay/mcp-bridge # MCP server for Claude Desktop / Cursor

Or clone the monorepo to get the live two-agent demo and edit-friendly templates (recommended for first run - see Quickstart below).

Use with Claude Code

This repo ships an Anthropic Skill at .claude/skills/agenticpay/SKILL.md. Copy it into your ~/.claude/skills/ to give Claude Code first-class context about agenticpay - it'll then walk you through monetizing an MCP server, generating tool routes, and verifying on-chain settlements without re-reading the README every time.

mkdir -p ~/.claude/skills

cp -r .claude/skills/agenticpay ~/.claude/skills/

Quickstart (devnet, ~5 minutes, free)

# 1. Install

pnpm install pnpm -r build

2. Generate a payer wallet, fund it on devnet

node packages/cli/dist/index.js wallet new node packages/cli/dist/index.js wallet show

→ fund SOL at https://faucet.solana.com (paste pubkey)

→ fund USDC at https://faucet.circle.com (Solana Devnet, same pubkey)

3. (option A - fastest) Use our hosted devnet facilitator. Skip step 4.

export FACILITATOR_URL=https://agentpay-facilitator-e9b20a5fee6a.herokuapp.com

3. (option B - fully self-hosted) Start your own facilitator (terminal 1)

pnpm --filter @agenticpay/facilitator dev

Note the printed feePayer address. It needs ~0.05 SOL devnet to cover fees.

Either airdrop or use the helper:

pnpm --filter @agenticpay/facilitator fund export FACILITATOR_URL=http://localhost:4022

4. Start the paywalled mcp-server (terminal 2)

PAY_TO= pnpm --filter @agenticpay/mcp-server dev

5. Run the live LLM agent demo (terminal 3, needs ANTHROPIC_API_KEY in .env)

pnpm --filter @agenticpay/two-agent-demo agent

Framework integrations

Drop-in templates for the most common AI agent stacks live under examples/:

Framework	File
Anthropic SDK (canonical)	`examples/two-agent-demo/src/agent-llm.ts`
Real-world paid server template (Claude-backed tools)	`examples/research-server/`
LangChain.js	`examples/langchain-js/agent-with-paid-tools.ts`
LangChain Python	`examples/langchain-python/agent_with_paid_tools.py`
Eliza (Solana-native)	`examples/eliza/plugin-agenticpay.ts`
Mastra	`examples/mastra/paid-tool.ts`
Vercel AI SDK	`examples/vercel-ai-sdk/paid-tool.ts`
OpenAI Custom GPT	`examples/openai-gpt/action-schema.json`

See examples/README.md for the integration matrix.

Status

Pre-alpha. Devnet validated end-to-end. Mainnet config supported but requires funding the facilitator with real SOL and pointing at a mainnet-capable RPC (Helius, QuickNode, etc.).

Roadmap

Devnet end-to-end demo (smoke + LLM agent)
Self-hosted x402 facilitator (verify + settle, fee_payer abstraction)
Real-world MCP server template (search, fetch, summarize, extract - instead of toy reverse_string)
On-chain escrow for long-running tasks (Anchor program)
Agent reputation registry on-chain
Hosted facilitator service (agenticpay.com)

What's a facilitator?

If you've never seen x402 before: the facilitator is the trusted middleman that (1) verifies an agent's signed payment payload, (2) submits the USDC transfer on-chain, and (3) pays the SOL gas fees so the agent doesn't need any SOL - only USDC. Most MCP devs don't want to run their own; they point at a hosted one.

This repo ships a complete facilitator implementation. You can self-host it, fork it, audit it, or deploy it as a service for your own users.

What happens when a paid tool call fails?

Short version: a failed tool call is never charged. x402 settlement is an irreversible push, so the middleware is careful about *when* it settles:

Verify before execute. The payment payload (signature, funds, requirements match) is verified before your tool handler runs. Invalid payment → HTTP 402, the tool never executes.
Execute with a buffered response. The handler runs, but its response is held back - nothing is sent to the agent yet.
Settle only on success. If the handler responds with status ≥ 400, the middleware skips settlement entirely and just returns the error. The agent pays nothing for a failed call.
No result without payment. If on-chain settlement itself fails, the buffered tool result is discarded and the agent gets a payment error instead - the server never leaks a result it wasn't paid for.

What this doesn't cover: a tool that returns 200 OK with a junk answer is still charged - the protocol can't judge response quality. That's what keeps per-call prices micro ($0.0005–$0.001 in the demo): the worst case is capped at one call's price, and quality enforcement belongs to a reputation layer (see Roadmap) rather than the payment protocol.

License

MIT

Agenticpay

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

MCP Server Autocad Lisp Helper

README from the maker

agenticpay

Live demo

Why

Architecture

Packages

Install

Use with Claude Code

Quickstart (devnet, ~5 minutes, free)

2. Generate a payer wallet, fund it on devnet

→ fund SOL at https://faucet.solana.com (paste pubkey)

→ fund USDC at https://faucet.circle.com (Solana Devnet, same pubkey)

3. (option A - fastest) Use our hosted devnet facilitator. Skip step 4.

3. (option B - fully self-hosted) Start your own facilitator (terminal 1)

Note the printed feePayer address. It needs ~0.05 SOL devnet to cover fees.

Either airdrop or use the helper:

4. Start the paywalled mcp-server (terminal 2)

5. Run the live LLM agent demo (terminal 3, needs ANTHROPIC_API_KEY in .env)

Framework integrations

Status

Roadmap

What's a facilitator?

What happens when a paid tool call fails?

License