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Mpp32 MCP Server

Pays for callable APIs over MCP using x402 on Solana or Base, with catalog browsing and Solana token intelligence.

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Install Mpp32 MCP Server

Pick your client, then add it in one click or paste the config.

STDIONode.js
~/Library/Application Support/Claude/claude_desktop_config.json
claude_desktop_config.json
{
  "mcpServers": {
    "mpp32-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "mpp32-mcp-server@latest"
      ],
      "env": {
        "MPP32_AGENT_KEY": "YOUR_VALUE_HERE",
        "MPP32_SOLANA_PRIVATE_KEY": "YOUR_VALUE_HERE",
        "MPP32_PRIVATE_KEY": "YOUR_VALUE_HERE"
      }
    }
  }
}

Settings → Developer → Edit Config, merge this into mcpServers, then fully quit and reopen Claude Desktop.

Values are written into the snippet above so you can paste it as is. They never leave your browser.

Automated check passed— started and listed 16 tools correctly (16d ago).

Overview

The mpp32-mcp-server MCP server lets agents discover and call machine-payable APIs through a federated catalog. It can pay x402 endpoints on Solana or Base, with additional support for Tempo and AGTP flows, using signing keys held on the local machine. Use it when an agent needs paid data or API services without separate provider accounts or custom 402 payment handling. The server also exposes Solana token intelligence and a free tier of 10 Intelligence Oracle calls per day with an agent key.

Use cases

  • Browse paid and free APIs from a federated catalog
  • Pay x402 services on Solana or Base
  • Call Solana token intelligence from an agent
  • Delegate capped API spending to sub-agents

Key features

  • Federated catalog discovery
  • x402 payments with USDC on Solana and Base
  • Tempo and AGTP production flows
  • Solana token intelligence
  • Delegated spend keys
  • On-chain settlement signatures

Tools16

What Mpp32 MCP Server lets your agent do. Expand a tool for its parameters.

Verified live~4.1k tokens of context

Security & health

What it can reach and how reliably it runs — from our own checks, not the maintainer’s claims.

ActiveLast checked 1d ago

Recent health check succeeded.

25/30 checks healthy over the last 91d

What it can do

From the 16 tools this server returned when we ran it.

Can delete or modify data · 1Handles credentials · 7Makes network requests · 5Read-only tools · 15
Unusual tool instructions. 1 tool description contain text aimed at the AI model rather than at you (reaches for local secrets). Read the tool descriptions before connecting.
Network at startup4 connections
Files written at startupNone
Install scriptsNone
npm provenanceNot published
Package age169 days
Maintainers1

Observed 2026-10-24 in an isolated sandbox. A description of reach, not a security audit.

Supply-chain signal

No high-severity advisories surfaced by our automated scan.

Critical 0High 0Medium 0Low 0

Scanned 2d ago via OSV.dev · mpp32-mcp-server@latest (npm)

Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

GitHub stars221Stargazers on the source repository.
npm downloads515Package downloads in the last 30 days.
Last commit3mo agoMost recent push to the default branch.
Availability100%Our rolling endpoint + install checks that succeeded.
Install checkPassedOur sandbox started it and listed its tools.
Tools exposed16Callable tools this server registers over MCP.
Directory activity1 viewsConfig copies, upvotes, and views on AllMCPs.

How Mpp32 MCP Server works

What mpp32-mcp-server MCP server does

The mpp32-mcp-server MCP server connects an MCP-compatible agent to MPP32's federated service catalog and payment proxies. Through one local process, an agent can find machine-payable APIs and invoke HTTP services that are free or require payment. The catalog includes entries for token intelligence, market data, web search, image generation, embeddings, DeFi analytics, wallet scoring, on-chain queries, trading signals, and other services described by the repository.

The server supports production payments through x402 on Solana using USDC and through x402 on Base using USDC. Tempo payments using pathUSD and AGTP identity flows are also listed as live in production. AP2 and ACP are wired into the project but disabled in production under the conditions described in the repository.

How it works

An agent first asks the catalog for services. Each result includes pricing, supported protocols, and an indication of whether the service can be called through this MCP server or is discovery-only. The agent can then invoke a callable HTTP endpoint. Free services return directly; paid services use the relevant payment flow.

For Solana and Base x402 calls, payment is made with USDC and signed using credentials configured on the local machine. The repository states that MPP32 does not hold the money or provider accounts. Settlement information includes an on-chain signature that can be checked on Solscan or Basescan. Tempo signing can use the MCP server's private key configuration.

A free tier provides 10 Intelligence Oracle calls per day without a wallet or USDC. The server also includes a Solana token intelligence tool that reports items such as alpha scoring, rug risk, whale flow, smart-money signals, and 24-hour pump probability, as described in the README.

Setup and configuration

Run the published package with:

Terminal
npx -y mpp32-mcp-server@latest

Add it as a stdio MCP server in Claude Desktop, Claude Code, Cursor, Windsurf, or another MCP-compatible client. Obtain the key from the MPP32 Agent Console.

For Solana payments, set MPP32_SOLANA_PRIVATE_KEY to a base58-encoded 64-byte Solana secret key. The wallet needs USDC and native SOL for transaction fees; the README warns that a USDC-only wallet can fail because of rent requirements. Private keys remain on the local machine.

Tools and capabilities

The mpp32-mcp-server MCP server exposes three tools:

  • list_mpp32_services searches the federated catalog and returns pricing, protocols, and callability details.
  • call_mpp32_endpoint invokes an HTTP-callable service, handling free services and paid responses.
  • get_solana_token_intelligence retrieves the documented Solana token intelligence data.

The repository also describes delegated spend keys for scoped, capped, revocable child sessions. These keys can restrict allowed services, budget, per-call price, and spending velocity, with spending rolled up to the parent session.

Limitations and notes

The free Intelligence Oracle allowance is 10 calls per agent session per day and resets at midnight UTC. Paid Solana use requires both a compatible private key and wallet balances. AP2 remains disabled until a trusted-issuer allowlist is configured, while ACP remains disabled until its checkout flow is verified end to end. Catalog entries may be discovery-only and therefore not callable through this MCP server.

Read the full README View source on GitHub

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Frequently Asked Questions about Mpp32 MCP Server

mpp32-mcp-server is an MCP server that connects AI agents to MPP32's federated catalog and payment proxies. Its main tools list callable services, invoke HTTP endpoints, and retrieve Solana token intelligence. It can pay x402 services on Solana or Base, while keeping signing keys on the agent's machine.

Install it with `npx -y mpp32-mcp-server@latest` and add that command to the MCP server configuration of a compatible client. Set the relevant environment variables in the client configuration, such as `MPP32_AGENT_KEY` and the Solana signing key for paid Solana calls.

Yes, mpp32-mcp-server works with Cursor through its standard stdio configuration. Add the `npx -y mpp32-mcp-server@latest` command and provide the environment variables required for the services and payment networks you plan to use.

No, a wallet is not needed for the documented free tier. With an `MPP32_AGENT_KEY`, an agent receives 10 free Intelligence Oracle calls per day. Paid Solana calls require a wallet with USDC and native SOL, while other payment flows require their corresponding signing configuration.

Use `MPP32_SOLANA_PRIVATE_KEY` for Solana payment signing and `MPP32_PRIVATE_KEY` for Tempo payment signing.

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