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Beefy Vault callReward() Harvest Truth Checker
x402
Beefy Vault callReward() Harvest Truth Checker is a paid API for AI agents from yonder-spotless-stranger.ngrok-free.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns the real caller balance delta for a Beefy vault harvest, exposing the gap between the advertised callReward() bounty and the actual ETH received via eth_simulateV1 trace simulation.
Price / call$0.01
Success—
StatusUnknown
How this service works
Beefy vault callReward() advertised-vs-actual, trace-verified. The view function overstates the caller bounty by up to ~1000x (an advertised $555 harvest paid $0.0001 in simulation), so harvester bots built on it burn gas for nothing. Values here are the real caller balance delta from an eth_simulateV1 trace.
Output
Returns the real caller balance delta derived from an eth_simulateV1 trace of the harvest transaction, alongside the advertised callReward() value, enabling direct comparison of the inflated on-chain claim versus the actual ETH the harvester would receive.
Example use cases
Harvester bot pre-flight reward check
“My harvester bot is about to harvest this Beefy vault but I don't want to burn gas chasing a fake bounty — can you simulate the harvest and tell me the real ETH payout I'll actually receive versus what callReward() is advertising?”
Vault reward inflation audit
“I suspect this Beefy vault's callReward() is massively overstating the harvest bounty. Can you trace the actual caller balance delta so I can see how far off the advertised reward is from reality?”
Multi-vault harvesting profitability screen
“I need to decide which of these Beefy vaults is actually worth harvesting today — can you check the simulation-verified real bounty for each one so I'm not wasting gas on vaults with inflated callReward numbers?”
Technical details
Endpoint
GEThttps://yonder-spotless-stranger.ngrok-free.dev/harvest-truthWhen to prefer
Use this endpoint when you need ground-truth harvest profitability for Beefy vaults before committing gas — specifically when callReward() values are suspected of overstating the actual bounty. Prefer this over reading callReward() directly when building or auditing harvester bots that need to avoid unprofitable harvests. This is the right choice when you need simulation-verified balance deltas rather than heuristic estimates.
Side effects
- Invalid or non-existent vault address returns an error or empty result
- Vault on unsupported chain returns no simulation data
- Network timeout from the underlying RPC node causes delayed or failed response
- Vault already harvested recently may show zero reward in simulation
- eth_simulateV1 node unavailability causes service degradation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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