A free, read-only Model Context Protocol server for pump.fun and Solana. It gives Claude — or any MCP client — live token discovery, on-chain bonding-curve and holder analysis, creator fee-claim tracking, Solana Name Service resolution, KOL signals, read-only swap quotes, and shareable live 3D token snapshots. Every Solana RPC and pump.fun API call runs server-side on the canonical three.ws backend, so the data is live and on-chain while the client stays zero-config: no API keys, no RPC URL, no wallet.

Install

Claude Code (one-liner)

claude mcp add pumpfun -- npx -y @three-ws/pumpfun-mcp

Claude Desktop / Cursor / any MCP client

Add to your MCP config (claude_desktop_config.json, .cursor/mcp.json, .mcp.json, etc.):

{
	"mcpServers": {
		"pumpfun": {
			"command": "npx",
			"args": ["-y", "@three-ws/pumpfun-mcp"]
		}
	}
}

Restart the client and the pump.fun tools appear. No install step required.

Run directly

npx -y @three-ws/pumpfun-mcp
# or install globally and run the bin
npm i -g @three-ws/pumpfun-mcp && pumpfun-mcp

Quick start

The server speaks stdio JSON-RPC — your MCP client spawns it via the npx command above. Once configured, ask your client natural-language questions and it picks the right tool:

"What's trending on pump.fun right now?"        → get_trending_tokens
"Show the bonding curve for <mint>"             → get_bonding_curve
"Who are the top holders of <mint>?"            → get_token_holders
"Resolve bonfida.sol"                           → sns_resolve
"Build a 3D snapshot for <mint>"                → pumpfun_token_3d

Tools

All tools are read-only — nothing signs or sends a transaction. pumpfun_quote_swap only quotes; pumpfun_vanity_mint returns a keypair for you to use yourself.

| Tool | What it does | | -------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | search_tokens | Search pump.fun tokens by name, symbol, or mint. | | get_token_details | Full metadata for a mint. | | get_bonding_curve | Real/virtual reserves + graduation progress (on-chain). | | get_token_trades | Recent buy/sell history for a token. | | get_trending_tokens | Top tokens by market cap. | | get_new_tokens | Most recently launched tokens. | | get_graduated_tokens | Tokens that graduated to the Raydium AMM. | | get_king_of_the_hill | Highest-cap token still on the bonding curve. | | get_token_holders | Top holders with concentration analysis (on-chain). | | get_creator_profile | A creator's tokens with rug-pull risk flags. | | kol_radar | gmgn-style early-detection radar signals. | | kol_leaderboard | Top KOL traders ranked by P&L. | | pumpfun_list_claims | Recent creator fee-claim events (on-chain). | | pumpfun_watch_claims | Fee claims for a creator within a look-back window. | | pumpfun_first_claims | First-ever creator claims — a cash-out signal. | | pumpfun_quote_swap | Read-only pump.fun AMM swap quote (no signing). | | pumpfun_watch_whales | Collect large trades on a token over a short window. | | pumpfun_vanity_mint | Grind a vanity Solana keypair (secret returned to caller, never stored). | | sns_resolve | Resolve a .sol domain to its owner wallet. | | sns_reverseLookup | Reverse-lookup a wallet to its primary .sol domain. | | social_cashtag_sentiment | Deterministic lexicon sentiment over supplied posts. | | social_x_post_impact | Correlate an X post to bonding-curve price impact. | | pumpfun_token_3d | Live 3D snapshot of a token — composes metadata, holders, and graduation into a shareable three.ws/coin3d viewer (spinning coin medallion + holder galaxy + graduation ring) and returns the deep-link, an embeddable iframe, and the underlying data. |

The live tool list is fetched from the backend at startup; a bundled copy ships as an offline fallback so a fresh install always advertises a correct surface.

Inspect the tools

npx -y @modelcontextprotocol/inspector npx @three-ws/pumpfun-mcp

Configuration

No configuration is required. One optional override exists:

| Env var | Default | Purpose | | ----------------- | ----------------------------------- | --------------------------------------------------------- | | PUMPFUN_MCP_URL | https://three.ws/api/pump-fun-mcp | Backend endpoint. Override only to self-host the handler. |

How it works

This package is a small stdio ↔ HTTP bridge. It forwards MCP tools/call requests to the canonical three.ws pump.fun JSON-RPC backend, which performs the actual Solana RPC reads and pump.fun API queries. That keeps one authoritative implementation, ships no secrets to clients, and means the tool surface stays current automatically.

pumpfun_token_3d is a native tool: it runs in-process, orchestrating several backend reads (metadata + bonding curve + holders) and resolving the token logo from its on-chain metadata URI, then returns a deep-link into the three.ws 3D viewer. It needs no extra keys and adds no new backend dependency.

Requirements

• Node.js >= 20 (from engines).
• No API keys, RPC URL, or wallet. Outbound HTTPS to the three.ws backend (or your PUMPFUN_MCP_URL).

Related

• @three-ws/mcp-server — the paid, x402-settled three.ws MCP (text→3D mesh, avatars, pose seeds, ERC-8004 reputation, and a paid pump_snapshot).

Links

• Homepage: https://three.ws
• Changelog: https://three.ws/changelog
• Issues: https://github.com/nirholas/three.ws/issues
• License: Apache-2.0 — see LICENSE