Harvey MCP Server

Token safety, trading signals, and social intel for AI agents. Pay-per-call USDC.

Local serverstdio

What is the Harvey MCP server?

Most developer tooling work still happens through a UI a human drives. Harvey MCP server moves it into the conversation instead. Token safety, trading signals, and social intel for AI agents. Pay-per-call USDC.

The short version

MCP server for AI agents. Token safety scoring, trading signals, market regime detection, and social intelligence. Two payment options: x402 USDC micropayments or API key subscriptions.

The tools it exposes

The server publishes 4 tools. What each one is for:

  • Tier — Rate Limit
  • Free — 100 calls/day
  • Pro — Unlimited
  • PAYG — Unlimited

What it needs from you

Configuration is passed through the environment: SOLANA_SECRET_KEY. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.

Getting it running

The server ships on npm as mcpay, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.

How it compares

This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Harvey's toolset — Tier, Free, Pro and 1 more — is a fair guide to whether it matches your workflow. It is maintained by meltingpixelsai; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.

Things to watch

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Available tools

ToolWhat it does
TierRate Limit
Free100 calls/day
ProUnlimited
PAYGUnlimited

How to install the Harvey MCP server

{
  "mcpServers": {
    "harvey-intel": {
      "command": "npx",
      "args": ["-y", "mcpay"],
      "env": {
        "SOLANA_SECRET_KEY": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

VariableDescriptionRequired
SOLANA_SECRET_KEYCredential the server authenticates with.Yes

Example prompts to try

  • Use Harvey to Tier.
  • Use Harvey to Free.
  • Use Harvey to Pro.

Frequently asked questions

It connects Harvey to MCP-compatible AI assistants such as Claude and Cursor, exposing 4 tools (Tier, Free, Pro, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Harvey directly.