DeFi Yield Finder API

io.github.Br0ski777Published by GitHub account Br0ski777v1.1.0Updated Oct 24, 2026

Best DeFi yields by token — APY, TVL, risk, protocol. DeFiLlama-powered. x402.

The publisher's own server: Finder Jobs

VerifiedSSEWeb executableFinanceData & Analytics

Overview

AI-generated overview

A remote MCP endpoint that returns ranked DeFi yield opportunities (APY, TVL, risk, protocol) for a token, paid per call in USDC via x402.

What you can do
Find and rank DeFi yield pools for a given token across chains and protocols, with optional chain filter, minimum TVL and result limit; results include pool, protocol, chain, APY, TVL, risk level and yield type. The same lookup is offered as a GET and a POST variant.
When to use it
Useful when comparing lending, staking, LP and vault yields for a token, or when an assistant needs current DeFi yield data to discuss capital deployment options. Not intended for swap quotes, wallet balances or liquidation risk.
Requirements
A remote SSE endpoint; no signup or API key. Each call is paid per request in USDC on Base L2 through the x402 protocol, so an x402-capable client with a funded wallet is needed to complete the payment challenge. Network access to the endpoint is required.
Before you install
Every call costs money (listed at $0.005 per request) in USDC on Base, settled through a wallet, so an assistant could spend funds without explicit limits. Payment goes through third-party facilitators (Coinbase CDP, PayAI). Yield and risk figures come from DeFiLlama and are informational, not investment advice.

Installation

In SourceWeft

  1. Open DeFi Yield Finder API in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via SSE. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.Br0ski777%2Fdefi-yields/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "defi-yield-finder-api": {
      "type": "sse",
      "url": "https://defi-yields.api.klymax402.com/mcp"
    }
  }
}

README

DeFi Yield Finder API

[MCP Server] [x402] [License: MIT]

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.):

json
{  "mcpServers": {    "defi-yields": {      "url": "https://defi-yields.api.klymax402.com/mcp"    }  }}

Quickstart -- HTTP (x402)

bash
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

ToolMethodPathPriceDescription
defi_find_best_yieldsGET/api/yields$0.005Find best DeFi yield opportunities for a token
defi_find_best_yieldsPOST/api/yields$0.005Find best DeFi yield opportunities for a token (POST variant)

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

NameTypeRequiredDescription
tokenstringyesToken symbol to find yields for (e.g. USDC, ETH, WBTC)
chainstringnoFilter by chain (e.g. base, ethereum, arbitrum, polygon). Optional — returns all chains if omitted.
minTvlnumbernoMinimum TVL in USD to filter pools (default: 100000)
limitnumbernoNumber of results to return (default: 10, max: 50)

Returns

  • pool -- pool/vault name and pair
  • protocol -- protocol name (Aave, Compound, Lido, Aerodrome, etc.)
  • chain -- which blockchain network
  • apy -- current annual percentage yield
  • tvl -- total value locked in USD
  • riskLevel -- risk assessment (low/medium/high)
  • type -- yield type (lending, staking, LP, vault)

Example response:

json
{"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).

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. POST variant of defi_find_best_yields -- same params passed as JSON body instead of query string.

Parameters

NameTypeRequiredDescription
tokenstringyesToken symbol to find yields for (e.g. USDC, ETH, WBTC)
chainstringnoFilter by chain (e.g. base, ethereum, arbitrum, polygon). Optional — returns all chains if omitted.
minTvlnumbernoMinimum TVL in USD to filter pools (default: 100000)
limitnumbernoNumber of results to return (default: 10, max: 50)

Returns

  • pool -- pool/vault name and pair
  • protocol -- protocol name (Aave, Compound, Lido, Aerodrome, etc.)
  • chain -- which blockchain network
  • apy -- current annual percentage yield
  • tvl -- total value locked in USD
  • riskLevel -- risk assessment (low/medium/high)
  • type -- yield type (lending, staking, LP, vault)

Example response:

json
{"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"
  • "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.

License

MIT

Source: README.md at commit 63db0bc

Tools

0
SourceWeft has not read this server's tools yet.

Version history

1
  1. v1.1.0LatestSep 16, 2026

Score

50% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declaredRequired10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

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