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Seneschal Puzzle/Bounty Contract Risk Feed
x402
Seneschal Puzzle/Bounty Contract Risk Feed is a paid API for AI agents from api.seneschal.space, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Returns an annotated watchlist of on-chain puzzle, CTF, and bounty contracts classified by payout risk (locked, front-run bait, owner-only, claimable, etc.) with ETH at stake and front-run verdicts.
Price / call$0.05
Success—
StatusUnknown
How this service works
Puzzle / bounty contract risk feed: the annotated watchlist of puzzle/CTF/bounty contracts classified as locked_no_payout (funded but value can never leave — solving pays nothing), frontrun_bait (pays msg.sender on a calldata condition — broadcast the solution and you WILL be front-run; submit privately), owner_only_payout, claimable, indeterminate or unfunded. Each entry ships payout-path evidence, front-run verdict and ETH at stake. Filters: ?classification=&funded_only=1&limit=.
Output
A JSON object with a 'totals' summary, an 'entries' array of annotated contracts each carrying classification (locked_no_payout, frontrun_bait, owner_only_payout, claimable, indeterminate, unfunded), payout-path evidence, front-run verdict, ETH value at stake, and an 'as_of_ms' Unix timestamp indicating data freshness.
Example use cases
Example prompt
“Show me all currently funded Ethereum puzzle and CTF contracts that are front-run bait — I want to see which ones will get sandwiched if I broadcast a solution publicly, with how much ETH is at stake for each.”
Technical details
Endpoint
GEThttps://api.seneschal.space/v1/premium/puzzle-riskWhen to prefer
Use this endpoint when an agent or researcher needs to evaluate on-chain Ethereum puzzle, CTF, or bounty contracts before attempting to solve or claim them — specifically to detect front-run risk, locked/unclaimable value, or owner-gated payouts. Prefer this over generic contract analysis tools when the specific risk taxonomy (locked_no_payout, frontrun_bait, etc.) and ETH-at-stake data is needed for automated decision-making about whether to attempt a contract solution.
Side effects
- Invalid classification value returns 400 or empty result set
- Payment not provided or invalid x402 payment header returns 402 Payment Required
- limit exceeds maximum of 1000 — capped silently or returns error
- funded_only with non-boolean-like value may be ignored or cause 400
- Service unavailable or upstream chain data stale returns 503 or stale as_of_ms
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"totals": {
"funded": 9,
"watched": 24,
"eth_at_frontrun_risk": 0.5,
"eth_locked_no_payout": 1
},
"entries": [
{
"notes": [
"Pays the caller on a calldata condition — submit privately."
],
"address": "0xd7c6…",
"balance_eth": 0.5,
"payout_kinds": [
"selfdestruct"
],
"classification": "frontrun_bait",
"frontrun_exposed": true
}
],
"as_of_ms": 1765532000000
}
}Tags
x402
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