Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@web3juice-mcp What does USDC lending pay on each chain right now?"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
Evidence-backed DeFi yield data for your AI assistant. Ask Claude, Cursor or any MCP client what ~17,000 DeFi pools pay, where the yield comes from (base vs reward tokens), how it has moved over 90 days and how pools compare — with every number dated and linked to its source.
This package is a tiny, dependency-free bridge from a local stdio MCP client to the hosted Web3Juice MCP server at
https://web3juice.com/api/mcp. Clients that support remote servers can connect to that URL directly; see
web3juice.com/mcp.
Read-only: it never sees a wallet's keys, signs a transaction or moves funds. Not financial advice.
Claude Desktop → Settings → Developer → Edit Config, then add:
{
"mcpServers": {
"web3juice": {
"command": "npx",
"args": ["-y", "web3juice-mcp"]
}
}
}Restart Claude Desktop and ask: "What does USDC lending pay on each chain right now?"
Requires Node.js 18.17 or newer.
Create a key on your Web3Juice account page and add it as an environment variable:
{
"mcpServers": {
"web3juice": {
"command": "npx",
"args": ["-y", "web3juice-mcp"],
"env": {"WEB3JUICE_API_KEY": "w3j_your_key_here"}
}
}
}Related MCP server: MoltLlama
Claude Code (remote, no install):
claude mcp add --transport http web3juice https://web3juice.com/api/mcpClaude Code plugin (this repository is also a plugin marketplace):
claude plugin marketplace add jimbob1414/web3juice-mcpclaude plugin install web3juice@web3juiceSet WEB3JUICE_API_KEY in your environment to use your own limits.
Cursor, VS Code, ChatGPT, Claude.ai and others: see web3juice.com/mcp.
Claude Desktop extension: download web3juice.mcpb from the latest release and open it.
Tool | What it does |
| Market overview for any filter: median and TVL-weighted APY by chain, protocol or strategy. |
| Find and rank pools by token, chain, protocol, APY and TVL. |
| One pool: APY split, TVL, data age, contract and token addresses, deposit and source links, assessment. |
| 7/30/90-day APY trend with dated samples. |
| 2–5 pools side by side with 30-day ranges. |
| Feed health and last update. |
| How the experimental evidence assessment works. |
With a Pro, Power or Team key, read-only workspace tools are added: list_alerts, get_alert,
list_notebook_entries, get_notebook_entry, list_investments, list_wallets, get_wallet_positions.
Prompts: find_stablecoin_yields, analyse_pool, compare_yields, yield_market_snapshot.
Resources: web3juice://guide, web3juice://methodology, web3juice://data-sources, web3juice://pool/{poolId}.
No key | Free account key | Pro (£10/month) | Power (£39/month) | |
Calls per day | 500 per address | 500 | 10,000 | 50,000 |
Calls per minute | 30 | 30 | 120 | 300 |
Your alerts, notebook, investments, wallets | — | — | yes | yes |
Current prices: web3juice.com/pricing.
Variable | Default | Purpose |
| none | Optional key ( |
|
| Server URL. Must be |
| off | Set to |
The bridge writes only MCP messages to stdout; diagnostics go to stderr.
Your API key is sent only to the configured HTTPS URL, in the Authorization header. It is never logged.
Keys can only read. Revoke a key at any time on your account page; the next call fails with a clear message.
Pool names and labels come from third-party data sources and are treated as data, not instructions.
Problem | Fix |
| Install Node.js 18.17+ from nodejs.org, then restart your client. |
"API key is not valid or has been revoked" | Create a new key on your account page and update |
"Daily MCP limit reached" | Wait until 00:00 UTC, add a key, or upgrade at web3juice.com/pricing. |
Search returns nothing | Results default to pools with at least $100K TVL and data under 60 minutes old; ask for smaller pools or older data. |
Rates look 100× too big | Filters use fractions: 0.05 means 5%. |
MIT for this bridge. The data and service at web3juice.com are not covered by this licence.
This server cannot be deployed
Crypto yield data for AI agents: lending, savings, staking, borrowing & stablecoin rates. 18 tools.
Evidence-based market data for AI agents deploying capital in DeFi. Empirical, not advertised.
Paid DeFi data for agents via x402 on Base: yields, APY moves, stablecoin pegs, token risk.
DeFi pool yield+security intelligence & token/contract risk scanner. USDC on Base via x402.
