Yield Agent

YieldAgent by Yield.xyz

Access the complete on-chain yield landscape through Yield.xyz's unified API. Discover 2600+ yields across staking, lending, vaults, restaking, and liquidity pools. Build transactions and manage positions across 80+ networks.

CRITICAL: Never Modify Transactions From The API

DO NOT MODIFY unsignedTransaction returned by the API UNDER ANY CIRCUMSTANCES.

Do not change, reformat, or "fix" any part of it — not addresses, amounts, fees, encoding, or any other field, on any chain.

If the amount is wrong: Request a NEW action from the API with the correct amount. If gas is insufficient: Ask the user to add funds, then request a NEW action. If anything looks wrong: STOP. Always request a new action with corrected arguments. Never attempt to "fix" an existing transaction.

Modifying unsignedTransaction WILL RESULT IN PERMANENT LOSS OF FUNDS.

Key Rules

The API is self-documenting. Every yield describes its own requirements through the YieldDto. Before taking any action, always fetch the yield and inspect it. The mechanics field tells you everything: what arguments are needed (mechanics.arguments.enter, .exit), entry limits (mechanics.entryLimits), and what tokens are accepted (inputTokens[]). Never assume — always check the yield first.

1. Always fetch the yield before calling an action. Call GET /v1/yields/{yieldId} and read mechanics.arguments.enter (or .exit) to discover the exact fields required. Each yield is different — the schema is the contract. Do not guess or hardcode arguments.

   Each field in the schema (ArgumentFieldDto) tells you:

   • name: the field name (e.g., amount, validatorAddress, inputToken)
   • type: the value type (string, number, address, enum, boolean)
   • required: whether it must be provided
   • options: static choices for enum fields (e.g., ["individual", "batched"])
   • optionsRef: a dynamic API endpoint to fetch choices (e.g., /api/v1/validators?integrationId=...) — if present, call it to get the valid options (validators, providers, etc.)
   • minimum / maximum: value constraints
   • isArray: whether the field expects an array

   If a field has optionsRef, you must call that endpoint to get the valid values. This is how validators, providers, and other dynamic options are discovered.

2. For manage actions, always fetch balances first. Call POST /v1/yields/{yieldId}/balances and read pendingActions[] on each balance. Each pending action tells you its type, passthrough, and optional arguments schema. Only call manage with values from this response.

3. Amounts are human-readable. "100" means 100 USDC. "1" means 1 ETH. "0.5" means 0.5 SOL. Do NOT convert to wei or raw integers — the API handles decimals internally.

4. Set inputToken to what the user wants to deposit — but only if inputToken appears in the yield's mechanics.arguments.enter schema. The API handles the full flow (swaps, wrapping, routing) to get the user into the position.

5. ALWAYS submit the transaction hash after broadcasting — no exceptions. For every transaction: sign, broadcast, then submit the hash via PUT /v1/transactions/{txId}/submit-hash with { "hash": "0x..." }. Balances will not appear until the hash is submitted. This is the most common mistake — do not skip this step.

6. Execute transactions in exact order. If an action has multiple transactions, they are ordered by stepIndex. Wait for CONFIRMED before proceeding to the next. Never skip or reorder.

7. Consult {baseDir}/references/openapi.yaml for types. All enums, DTOs, and schemas are defined there. Do not hardcode values.

Quick Start

# Discover yields on a network
./scripts/find-yields.sh base USDC

# Inspect a yield's schema before entering
./scripts/get-yield-info.sh base-usdc-aave-v3-lending

# Enter a position (amounts are human-readable)
./scripts/enter-position.sh base-usdc-aave-v3-lending 0xYOUR_ADDRESS '{"amount":"100"}'

# Check balances and pending actions
./scripts/check-portfolio.sh base-usdc-aave-v3-lending 0xYOUR_ADDRESS

Scripts

Common Patterns

Enter a Position

1. Discover yields: find-yields.sh base USDC
2. Inspect the yield: get-yield-info.sh <yieldId> — read mechanics.arguments.enter
3. Enter: enter-position.sh <yieldId> <address> '{"amount":"100"}'
4. For each transaction: wallet signs → broadcast → submit hash → wait for CONFIRMED

Manage a Position

1. Check balances: check-portfolio.sh <yieldId> <address>
2. Read pendingActions[] — each has { type, passthrough, arguments? }
3. Manage: manage-position.sh <yieldId> <address> <action> <passthrough>

Full Lifecycle

1. Discover → 2. Enter → 3. Check balances → 4. Claim rewards → 5. Exit

Transaction Flow

After any action (enter/exit/manage), the response contains transactions[]. For EACH transaction:

1. Pass unsignedTransaction to wallet skill for signing and broadcasting
2. Submit the hash — PUT /v1/transactions/{txId}/submit-hash with { "hash": "0x..." }
3. Poll GET /v1/transactions/{txId} until CONFIRMED or FAILED
4. Proceed to next transaction

Every transaction must follow this flow. Example with 3 transactions:

TX1: sign → broadcast → submit-hash → poll until CONFIRMED
TX2: sign → broadcast → submit-hash → poll until CONFIRMED
TX3: sign → broadcast → submit-hash → poll until CONFIRMED

unsignedTransaction format varies by chain. See {baseDir}/references/chain-formats.md for details.

API Endpoints

All endpoints documented in {baseDir}/references/openapi.yaml. Quick reference:

References

Detailed reference files — read on demand when you need specifics.

• API types and schemas: {baseDir}/references/openapi.yaml — source of truth for all DTOs, enums, request/response shapes
• Chain transaction formats: {baseDir}/references/chain-formats.md — unsignedTransaction encoding per chain family (EVM, Cosmos, Solana, Substrate, etc.)
• Wallet integration: {baseDir}/references/wallet-integration.md — Crossmint, Portal, Turnkey, Privy, signing flow
• Agent conversation examples: {baseDir}/references/examples.md — 10 conversation patterns with real yield IDs
• Safety checks: {baseDir}/references/safety.md — pre-execution checks, constraints

Error Handling

The API returns structured errors with message, error, and statusCode. Read the message. Error shapes are in {baseDir}/references/openapi.yaml. Respect retry-after on 429s.

Add-on Modules

Modular instructions that extend core functionality. Read when relevant.

• {baseDir}/references/superskill.md — 40 advanced capabilities: rate monitoring, cross-chain comparison, portfolio diversification, rotation workflows, reward harvesting, scheduled checks

Resources

• API Docs: https://docs.yield.xyz
• API Recipes: https://github.com/stakekit/api-recipes
• Get API Key: https://dashboard.yield.xyz