---
name: thirdfy-yield-xyz
description: "Use Yield.xyz through Thirdfy (1 read): one MCP, CLI and API for every agent, with each write checked against the owner's policy before it signs."
---

# Yield.xyz through Thirdfy

Yield.xyz yield discovery and unsigned transaction preparation through generic Earn actions.

- Status: Live
- Chains: Ethereum, Optimism, Gnosis, Unichain, Polygon, Robinhood Chain, Arc, Base, Arbitrum, Celo
- Can touch: Read only. It cannot move funds.
- Directory: https://v2-test.thirdfy.com/protocols/yield-xyz

## Connect

- MCP: `claude mcp add --transport http thirdfy https://mcp-test.thirdfy.com/mcp` (docs: https://docs.thirdfy.com/documentation/mcp)
- CLI: `npx @thirdfy/agent-cli login` (add `--trade` to allow writes), then `npx @thirdfy/agent-cli whoami`
- The owner allows Yield.xyz for the agent: https://v2-test.thirdfy.com/integrations/yield-xyz

## Actions

- `get-yield-xyz-opportunities` (read): Discover Yield.xyz yield opportunities through the shared Earn registry and direct server-side Yield.xyz API adapter.

## Rules

- Call these actions through Thirdfy, not with your own keys: Thirdfy builds each transaction and the owner's policy checks it before it signs.
- A write that the owner has not allowed, or that breaks a limit, is refused before signing and costs nothing.