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Delx Seeded Tie Break
x402
Delx Seeded Tie Break is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Deterministically selects one candidate from a list using a seed string, breaking ties or making seeded decisions reproducibly.
Price / call$0.001
Success—
StatusUnknown
How this service works
Seeded Tie Break: Seeded Tie Break breaks a tie reproducibly among equally scored candidates from bounded caller-supplied values without an external provider. Call Seeded Tie Break when an agent needs a reproducible decision that another run can independently replay. Returns the deterministic selection plus seed provenance, population bounds, and the operation-specific outcome for Seeded Tie Break as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, stateless, memo…
Output
Returns a JSON object with the selected candidate string, its zero-based index in the input array, a status of 'pass', the operation name, and an evidence block confirming no data was retained and no external calls were made, plus a SHA-256 hash of the input for auditability.
Example use cases
Assigning tasks to competing agents
“I have five worker agents ready to handle this job — 'worker-1', 'worker-2', 'worker-3', 'worker-4', 'worker-5' — use the seed 'task-batch-42' to deterministically pick which one gets it.”
Reproducible A/B variant selection
“Pick one of these two landing page variants — 'variant-control' or 'variant-bold' — using the seed 'user-session-8821' so the same user always gets the same variant.”
Seeded winner selection from submissions
“We have four contest entries — 'alice', 'bob', 'carol', 'dave' — use the seed 'contest-2024-q3' to pick a winner in a way I can audit and verify later.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/seeded-tie-breakWhen to prefer
Use this endpoint when you need a deterministic, reproducible, auditable tie-break or seeded selection from a bounded list of candidates — particularly when the same seed must always produce the same winner, external randomness is untrustworthy, or you need an evidence hash for audit trails. Prefer it over random selection when reproducibility matters, and over hash-based selection when you want a managed, governed API call with a verifiable evidence block.
Side effects
- Empty candidates array returns an error or undefined behavior
- Seed exceeds 8192 character limit returns a validation error
- Candidates array exceeds 256 items returns a payload rejection
- Malformed JSON body returns a 400 bad request
- Network timeout on the POST returns no result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| seed | string | Seed supplied to Seeded Tie Break; used only for this bounded calculation and processed in memory without retention. |
| candidates | array | Candidates supplied to Seeded Tie Break; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"index": 1,
"selected": "agent-b"
},
"schema": "delx/util-seeded-tie-break/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "2af40d10ca5c00077ce59778ecab5e4435550298c2af584fa9395592d9a9208c",
"external_calls": 0
},
"operation": "seeded_decision:seeded_tie_break"
}
}Tags
x402
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