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Delx Commerce — Seeded Rendezvous Rank
x402
Delx Commerce — Seeded Rendezvous Rank is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).
Deterministically ranks and selects a node from a list using a seeded rendezvous (HRW) hashing algorithm, returning a ranked list with cryptographic scores.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object with the top-selected node, a full ranked list of all nodes each with a deterministic hex score, plus an evidence block containing the SHA-256 of the inputs, a flag confirming no data was retained, and a count of zero external calls — enabling verifiable, auditable decisions.
Example use cases
Consistent task assignment across workers
“I need to consistently assign job key 'job-8821' to one of these five workers — worker1, worker2, worker3, worker4, worker5 — using the seed 'batch-run-3' so the same worker always gets the same job.”
Reproducible shard selection for a distributed cache
“Given the cache key 'user:profile:99123' and seed 'shard-epoch-v2', rank these cache nodes — cache-us-east, cache-eu-west, cache-ap-south — and tell me which one should own this key.”
Agent fleet routing with verifiable audit trail
“I want to route request 'req-alpha-77' to one of my three AI agents — agent-red, agent-blue, agent-green — using seed 'fleet-v5', and I need a cryptographic record showing which agent was selected and why.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/seeded-rendezvous-rank?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need deterministic, reproducible node selection with cryptographic evidence of the decision — particularly in distributed systems where consistent hashing, verifiable audit trails, or agent-fleet routing are required. Prefer it over random selection when reproducibility across runs matters, and over custom HRW implementations when you want a pay-per-call, no-infrastructure, verifiable result with no data retention guarantees baked in.
Side effects
- Empty nodes array returns no selection
- Exceeding 256 nodes limit returns a validation error
- Malformed input types (non-string key or seed) cause schema rejection
- Missing required fields may result in a 400 or incomplete response
- Payment failure (x402) blocks execution before computation begins
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| key | string | Key supplied to Seeded Rendezvous Rank; used only for this bounded calculation and processed in memory without retention. |
| seed | string | Seed supplied to Seeded Rendezvous Rank; used only for this bounded calculation and processed in memory without retention. |
| nodes | array | Nodes supplied to Seeded Rendezvous Rank; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"selected": "n2",
"ranked_nodes": [
{
"node": "n2",
"score": "bd039453c0ba9edb4613bcc40672868b77523fa05df3607d1284201813691a3e"
},
{
"node": "n1",
"score": "444f37c2bc2a0abc09cffc79afebfd08a086442085bfb9f26fa31b239deaca4b"
},
{
"node": "n3",
"score": "17909b5cada1fd90f21c1c871bf21f5be354a535f741ad9ea9879a42922989f9"
}
]
},
"schema": "delx/util-seeded-rendezvous-rank/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "3351b84ac1d977aa3f2c82a51fd28b618a255b972578172462ff51b4c20cf1b2",
"external_calls": 0
},
"operation": "seeded_decision:seeded_rendezvous_rank"
}
}Tags
x402
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