True402 MCP

Name: True402 MCP
Author: true402

by true402version 1.3.2i★ –iRuns on your computer

Registry namedev.true402/mcp-server

Install

Overview

Description from the maker (original English)

Pay-per-call AI + web + on-chain tools over x402 (USDC on Base): LLM, SEO, extract, token safety.

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: Marketing & social media
You need to fill in: WALLET_PRIVATE_KEY

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: WALLET_PRIVATE_KEY, SERVER_URL, MAX_PAYMENT_USDC

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": {
    "true402": {
      "command": "npx",
      "args": [
        "-y",
        "@true402.dev/mcp-server"
      ],
      "env": {
        "WALLET_PRIVATE_KEY": "your-value",
        "SERVER_URL": "your-value",
        "MAX_PAYMENT_USDC": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add true402 --env WALLET_PRIVATE_KEY=your-value --env SERVER_URL=your-value --env MAX_PAYMENT_USDC=your-value -- npx -y @true402.dev/mcp-server

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": {
    "true402": {
      "command": "npx",
      "args": [
        "-y",
        "@true402.dev/mcp-server"
      ],
      "env": {
        "WALLET_PRIVATE_KEY": "your-value",
        "SERVER_URL": "your-value",
        "MAX_PAYMENT_USDC": "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": {
    "true402": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@true402.dev/mcp-server"
      ],
      "env": {
        "WALLET_PRIVATE_KEY": "your-value",
        "SERVER_URL": "your-value",
        "MAX_PAYMENT_USDC": "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

WALLET_PRIVATE_KEY secret env
Funded Base wallet private key for x402 payment signing (optional; without it, paid tools return the 402 requirements).
SERVER_URL env
true402 API base (default https://true402.dev/api). Must be https (or localhost) — the signer refuses to send a payment over cleartext.
MAX_PAYMENT_USDC env
Client-side per-call spend ceiling in USDC (default 0.10). The signer refuses to auto-pay a 402 whose amount exceeds this — protects the wallet from a hostile endpoint.

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 against the domain true402.dev (the registry checks domain ownership)
… 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 Marketing & social mediai

More stars than 0% of the other 2969 servers in this category
Published to the registry more recently than 73% of the other 2969 servers in this category
Basic checks equal to or better than 100% of the other 2969 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 True402 MCP 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: WALLET_PRIVATE_KEY

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 (1.3.2) reached the registry 13 days 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?

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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.

@true402.dev/mcp-server

MCP server for the [true402](https://true402.dev) machine-native marketplace — give your agent pay-per-call access to AI inference and web tools over x402 (HTTP 402 micropayments in USDC on Base).

No accounts, no API keys. The agent's wallet is its identity: each paid tool returns an HTTP 402 challenge, the server signs an EIP-3009 USDC authorization, and the call settles on-chain. Configure a funded wallet to auto-pay, or run without one and the paid tools will surface the exact payment requirements instead of failing.

Tools

Tools are auto-discovered from the live catalog at startup, so a new marketplace stall appears without an update to this package. The catalog currently yields:

Group	Tools	Price
Token safety (Base)	`token_report` (composite avoid/caution/ok verdict — the pre-trade gate), `token_safety`, `honeypot`, `address_safety`, `address_risk`, `deployer_check`	$0.005–0.008
Base history & flow	`liquidity_history` (every observed liquidity removal + co-drained tokens), `liquidity_pulls`, `new_pairs`, `whale_swaps`	$0.003–0.005
Before you sign	`tx_preflight` — an unsigned Base transaction: does it revert, does it grant an unlimited approval, has the counterparty drained liquidity. Takes no key and no signature	$0.008
Full dossier	`token_dossier` — verdict + reasons over deployer and liquidity history, and what could not be established	$0.10
Other chains	token safety, token report and address safety on Ethereum and BSC (plus deployer check on Ethereum); token safety on Solana	$0.005–0.008
Web	`web_extract`, `link_preview`, `screenshot`, `robots_check` (AI-crawler policy + llms.txt), `headers_check`	$0.003–0.005
SEO & search	`seo_audit` (SEO + GEO audit, per page), `serp`, `backlinks`, `keyword_volume` (up to 200 keywords per call), `ranked_keywords`, `keyword_ideas`	$0.02–0.15
Markets & finance	`prediction_markets`, `defi_yields`, `quant`	$0.003–0.005
LLM	`chat` (OpenAI-compatible, per-token + 3%), `list_models` (free)	—

Prices are indicative; the live 402 challenge is authoritative, and the server refuses to sign above its per-call cap. Call list_models or read https://true402.dev/api/openapi.json for the exact set.

Install

Requires Node.js ≥ 20. Runs over stdio — point any MCP client at it via npx.

Claude Desktop / Claude Code

Add to your MCP config (claude_desktop_config.json, or .mcp.json for Claude Code):

"mcpServers": { "true402": { "command": "npx", "args": ["-y", "@true402.dev/mcp-server"], "env": { "WALLET_PRIVATE_KEY": "0xYOUR_FUNDED_BASE_WALLET_KEY" } } } }

Cursor / Cline / other MCP clients

Same idea — command npx, args ["-y", "@true402.dev/mcp-server"], and the WALLET_PRIVATE_KEY env var.

Configuration

Env var	Default	Description
`SERVER_URL`	`https://true402.dev/api`	true402 API base. Override to point at a self-hosted instance.
`WALLET_PRIVATE_KEY`	_(none)_	A funded Base wallet private key used to sign x402 payments. Needs USDC (gas is sponsored by the facilitator — no ETH required). Without it, paid tools return the 402 requirements instead of paying.
`MAX_PAYMENT_USDC`	`0.25`	Hard per-call spend ceiling in USDC. This server auto-discovers every paid stall the marketplace advertises (it walks the live OpenAPI spec, not a fixed list), so a new or repriced stall can appear above the default at any time — a call over the ceiling is refused (not paid, not crashed), and the refusal names the price and the ceiling. Raise it if a discovered tool's description shows a price close to or over your configured value; one stall (`seo_audit`) is priced per page and can itself exceed a typical ceiling on a large page.
`X402_ALLOW_NETWORKS`	_(none)_	Payments are signed for Base mainnet (`eip155:8453`) only; a 402 naming any other chain is refused. To also pay on Base Sepolia or Ethereum mainnet, list them as comma-separated CAIP-2 ids, e.g. `eip155:84532,eip155:1`. Unsupported entries are ignored.

Security: the key is read only from the environment and is never logged, echoed, or returned. Use a dedicated low-balance wallet — fund it with only what you intend to spend.

How payment works

The tool calls the true402 endpoint with no payment.
The server replies 402 with accepted payment options (USDC on Base).
This MCP server signs an EIP-3009 transferWithAuthorization with your wallet.
It retries with the signed payment in the PAYMENT-SIGNATURE header (x402 v2); the service verifies and responds.
Settlement happens on-chain. Your wallet pays only USDC — the facilitator sponsors gas.

When a newer release of this server exists, the first tool result of the session carries one extra line saying so, with the install command. Nothing is blocked; it is shown once per process.

Guides

Also available for

MCP (Claude Code / Desktop, Cursor, Hermes) · Hermes Agent · OpenClaw · ElizaOS · LangChain · CrewAI · Vercel AI SDK · Coinbase AgentKit · Virtuals GAME · CLI — same on-chain checks, one install command each: [true402.dev/integrations](https://true402.dev/integrations)

Paying, exactly

The rules below are the service's, not this package's — they bite whatever client you use, and they are the ones that surprise people writing their own payer.

Pay the EXACT amount quoted in the 402. Underpaying is rejected. Overpaying is refused with 402 and never credited — settlement submits the signed value and there is no refund path, so a surplus would simply be swept. Equality is also what binds an authorization to the resource it was quoted for.
One authorization buys exactly one response. A replay is refused, not double-charged.
You are charged on success only. Settlement is submitted only when the endpoint returns 2xx; if it errors or times out, your signed authorization is never submitted, so there is nothing to refund.
Some endpoints serve a few free calls per day per client IP, with no wallet. The per-operation description in the OpenAPI spec says which.

Full rules: [true402.dev/terms](https://true402.dev/terms) · what is logged and kept: [true402.dev/privacy](https://true402.dev/privacy)

License

MIT

True402 MCP

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 Marketing & social mediai

Common questions

Alternatives

MCP YouTube Transcript

Google Analytics MCP

BibiGPT YouTube Video Summarizer

README from the maker

@true402.dev/mcp-server

Tools

Install

Claude Desktop / Claude Code

Cursor / Cline / other MCP clients

Configuration

How payment works

Links

Guides

Also available for

Paying, exactly

License