Summary
Pulls real-time DeFi yield data from DeFiLlama and surfaces it through a micropayment-gated API. You get APY rates, TVL figures, risk assessments, and protocol details filtered by token, all accessed via x402 USDC payments per request. Useful when you need Claude to compare stablecoin yields across protocols, find the best farming opportunities for a specific token, or assess risk-adjusted returns without manually scraping DeFiLlama. The micropayment model means you pay only for the queries you run, which makes sense for occasional research rather than building a full integration. Connects over SSE transport to the hosted API endpoint.
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Tools
Public tool metadata for what this MCP can expose to an agent.
1 tools
defi_find_best_yieldsUse this when you need to find the best DeFi yields for a token across all chains and protocols. Returns ranked opportunities in JSON. 1. pool: pool/vault name and pair 2. protocol: protocol name (Aa4 params
Use this when you need to find the best DeFi yields for a token across all chains and protocols. Returns ranked opportunities in JSON. 1. pool: pool/vault name and pair 2. protocol: protocol name (Aa
Parameters* required
chainstringFilter by chain (e.g. base, ethereum, arbitrum, polygon). Optional — returns all chains if omitted.
limitnumberNumber of results to return (default: 10, max: 50)
tokenstringToken symbol to find yields for (e.g. USDC, ETH, WBTC)
minTvlnumberMinimum TVL in USD to filter pools (default: 100000)
DeFi Yield Finder API
Best DeFi yields ranked by APY -- lending, staking, LP across 100+ protocols. Powered by DeFiLlama. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"defi-yields": {
"url": "https://defi-yields.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl "https://defi-yields.api.klymax402.com/api/yields?token=..."
# -> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
defi_find_best_yields | GET | /api/yields | $0.002 | Find best DeFi yield opportunities for a token |
defi_find_best_yields
Use this when you need to find the best DeFi yields for a token across all chains and protocols. Returns ranked opportunities in JSON.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
token | string | yes | Token symbol to find yields for (e.g. USDC, ETH, WBTC) |
chain | string | no | Filter by chain (e.g. base, ethereum, arbitrum, polygon). Optional — returns all chains if omitted. |
minTvl | number | no | Minimum TVL in USD to filter pools (default: 100000) |
limit | number | no | Number of results to return (default: 10, max: 50) |
Returns
pool-- pool/vault name and pairprotocol-- protocol name (Aave, Compound, Lido, Aerodrome, etc.)chain-- which blockchain networkapy-- current annual percentage yieldtvl-- total value locked in USDriskLevel-- risk assessment (low/medium/high)type-- yield type (lending, staking, LP, vault)
Example response:
{"pools":[{"pool":"USDC Lending","protocol":"Aave V3","chain":"base","apy":4.82,"tvl":125000000,"riskLevel":"low","type":"lending"}],"token":"USDC","totalPools":15}
When to use: deploying idle capital to find the highest safe yield. Essential for yield optimization and DeFi strategy comparison.
Not for: swap quotes (use dex_get_swap_quote), wallet balance (use wallet_get_portfolio), liquidation risk (use defi_get_liquidation_levels).
Example agent prompts
- "Find the best DeFi yields for a token across all chains and protocols"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT
Featured
Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Give your AI agent a complete email layer—sending, inbound inboxes, and sandbox testing.
Get 4K emails/month free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →
