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Base DeFi Yield Optimizer API

Official registry Finance and payments

Base chain DeFi yields — Aerodrome, Moonwell, APY, TVL, risk scores. x402.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (sse)
Claude Code 
claude mcp add --transport sse base-defi-yield-optimizer-api 'https://base-defi.api.klymax402.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "base-defi-yield-optimizer-api": {
            "type": "sse",
            "url": "https://base-defi.api.klymax402.com/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Base DeFi Yield Optimizer API
  2. Quickstart -- MCP
  3. Quickstart -- HTTP (x402)
  4. Tools
  5. Example agent prompts
  6. Payment
  7. Part of klymax402
  8. License

Base DeFi Yield Optimizer API

Base chain DeFi yields -- Aerodrome LP, Moonwell lending, top farms ranked by APY with TVL and risk. 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": {
    "base-defi": {
      "url": "https://base-defi.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

curl "https://base-defi.api.klymax402.com/api/opportunities"
# -> 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
base_get_defi_opportunitiesGET/api/opportunities$0.008Get DeFi yield opportunities on Base chain
base_get_defi_opportunitiesPOST/api/opportunities$0.008Get DeFi yield opportunities on Base chain (POST variant)
base_get_defi_opportunities

Use this when you need DeFi yield opportunities specifically on Base chain. Returns Base-native protocol yields in JSON.

Parameters

NameTypeRequiredDescription
protocolstringnoFilter by protocol: 'all', 'aerodrome', or 'moonwell'. Defaults to 'all'.

Returns

  • opportunities -- array of yield farms ranked by APY
  • protocol -- protocol name (Aerodrome, Moonwell)
  • pool -- pool name and token pair
  • apy -- current annual percentage yield
  • tvl -- total value locked in USD
  • riskScore -- risk rating (1-10, lower is safer)
  • type -- yield type (LP, lending, staking)

Example response:

{"opportunities":[{"protocol":"Aerodrome","pool":"USDC/WETH","apy":18.5,"tvl":45000000,"riskScore":3,"type":"LP"},{"protocol":"Moonwell","pool":"USDC Lending","apy":5.2,"tvl":120000000,"riskScore":1,"type":"lending"}],"chain":"base","totalPools":12}

When to use: deploying capital on Base chain specifically. Curated list of vetted Base-native protocols only.

Not for: swap quotes on Base (use dex_get_swap_quote), liquidation risk (use defi_get_liquidation_levels).

base_get_defi_opportunities

Use this when you need DeFi yield opportunities specifically on Base chain. Returns Base-native protocol yields in JSON. POST variant of base_get_defi_opportunities -- same params passed as JSON body instead of query string.

Parameters

NameTypeRequiredDescription
protocolstringnoFilter by protocol: 'all', 'aerodrome', or 'moonwell'. Defaults to 'all'.

Returns

  • opportunities -- array of yield farms ranked by APY
  • protocol -- protocol name (Aerodrome, Moonwell)
  • pool -- pool name and token pair
  • apy -- current annual percentage yield
  • tvl -- total value locked in USD
  • riskScore -- risk rating (1-10, lower is safer)
  • type -- yield type (LP, lending, staking)

Example response:

{"opportunities":[{"protocol":"Aerodrome","pool":"USDC/WETH","apy":18.5,"tvl":45000000,"riskScore":3,"type":"LP"},{"protocol":"Moonwell","pool":"USDC Lending","apy":5.2,"tvl":120000000,"riskScore":1,"type":"lending"}],"chain":"base","totalPools":12}

When to use: deploying capital on Base chain specifically. Curated list of vetted Base-native protocols only.

Not for: swap quotes on Base (use dex_get_swap_quote), liquidation risk (use defi_get_liquidation_levels).

Example agent prompts

  • "DeFi yield opportunities specifically on Base chain"
  • "DeFi yield opportunities specifically on Base chain"

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

Frequently asked questions

What is Base DeFi Yield Optimizer API?

Base chain DeFi yields — Aerodrome, Moonwell, APY, TVL, risk scores. x402.

How do I install Base DeFi Yield Optimizer API?

It runs as a remote server. In Claude Code: claude mcp add --transport sse base-defi-yield-optimizer-api 'https://base-defi.api.klymax402.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Base DeFi Yield Optimizer API need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Base DeFi Yield Optimizer API open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Base DeFi Yield Optimizer API?

It is published by Br0ski777. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.