Try Solscan MCP for Free: Introducing the Public MCP Server

AI agents are getting good at answering questions about Solana, as long as they can reach real on-chain data. Solscan MCP was built for exactly that: a standard interface that connects Claude, Codex, and other MCP-compatible agents to live, decoded Solana data.

Until now, using it meant a Pro plan. Today we're opening it up with the Solscan Public MCP server: a free way to connect your agent to Solscan, using nothing but a free Level 1 API key. No paid plan and no credit card. Just register a Solscan account and you're in.

What you get

Free network & analytics tools. These cover the network overview and daily, network-wide analytics, and they're fully usable on a Level 1 key.

Tool	Returns
Chain Info	Solana network overview: block height, epoch, slot, transaction count
Transaction Analytics	Daily transactions: total / vote / non-vote
Compute Units Analytics	Daily compute units consumed
Stake Analytics	Daily active stake (SOL + USD)
Fees Analytics	Daily transaction fees: base + priority (SOL + USD)
Slots Analytics	Blocks / slots produced per day
DEX Activity Analytics	Daily DEX/DeFi activity: trade count, trader count, volume USD, active DEX count

The analytics tools accept a range or a from_date / to_date window, and Transaction Analytics also takes a filter.

Live-demo tools. This is a hands-on sample of core Pro tools. They return the same real on-chain data as their Pro counterparts, under much stricter rate limits and request caps.

Tool	Returns
Account Transfer	SOL / SPL transfer history for an address
Account DeFi Activity	Swaps, liquidity, lending for an address
Account Transaction Enhanced	Transaction history with server-side filtering
Account Portfolio	Token holdings and USD value for an address
Token Transfer	Transfer history for a token
Token DeFi Activity	DeFi activity for a token
Token Meta	Metadata, supply, price, and market data for a token
Transaction Decode	Decoded actions for a transaction

Things to ask your agent

Once it's connected, try prompts like these:

"How have Solana's daily priority fees trended over the last 30 days?"
"Show me the portfolio and USD value of this wallet."
"What DeFi activity has this token seen recently?"
"Decode this transaction and explain what it did."

Get set up in three steps

Register a Solscan account to get your free Level 1 API key.
Add the Public server to your MCP client. For Claude Desktop, drop this into your config:

{
  "mcpServers": {
    "solscan": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://public-mcp.solscan.io/mcp",
        "--header",
        "token:${SOLSCAN_API_KEY}"
      ],
      "env": {
        "SOLSCAN_API_KEY": "YourFreeApiKey"
      }
    }
  }
}

Restart your client and start asking. Your agent can now call Solscan tools directly.

Endpoint: https://public-mcp.solscan.io/mcp

Good to know

Free tier, tight limits. A Level 1 key has low rate limits and request caps. That's fine for testing and experimentation, but not for production traffic.
A sample of Pro tools. The live-demo set is a subset. The full tool set and advanced data live on the Pro server.
No credit card. Just register a Solscan account to get a Level 1 key.

Ready for production?

When you're ready to build for real, switch to the Pro server at https://mcp.solscan.io/mcp. It has the full tool set, advanced data, and production limits.

Full setup guides for Claude Desktop, Claude Code, and Codex are in the Solscan MCP docs.