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Delx Seeded Rendezvous Rank
x402
Delx Seeded Rendezvous Rank is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Ranks a list of nodes by deterministic seeded rendezvous hashing to consistently select and order nodes given a key and seed.
Price / call$0.001
Success—
StatusUnknown
How this service works
Seeded Rendezvous Rank: Seeded Rendezvous Rank ranks nodes for a key using reproducible rendezvous hashing from bounded caller-supplied values without an external provider. Call Seeded Rendezvous Rank 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 Rendezvous Rank as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. Fi…
Output
Returns the top-selected node, a full ranked list of all nodes each with their deterministic rendezvous hash score, plus evidence metadata including whether any data was retained (always false), the input SHA-256 hash, and number of external calls made (always zero).
Example use cases
Stable shard assignment for user data
“I need to consistently route user 'user-9871' to the same database shard every time — rank these shards ['shard-a', 'shard-b', 'shard-c'] using seeded rendezvous hashing with key 'user-9871' and seed 'db-routing-v1'.”
Agent task assignment across workers
“I have three agent workers ['worker-alpha', 'worker-beta', 'worker-gamma'] and need to deterministically assign task 'job-55123' to one of them — can you do a seeded rendezvous rank with that key and seed 'task-dispatch-2024'?”
Reproducible node selection for cache lookup
“For cache key 'product-catalog-v3', rank these cache nodes ['cache-us-east', 'cache-us-west', 'cache-eu'] using seeded rendezvous hashing with seed 'cache-ring-seed' so I always hit the same node.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/seeded-rendezvous-rankWhen to prefer
Choose this endpoint when you need deterministic, reproducible node selection or ranking given a key and seed — ideal for consistent hashing, sharding, load balancing, or task routing where the same key must always map to the same node. Prefer over random selection when reproducibility and coordination-free routing matter. Use when privacy is important, as inputs are processed in memory with no retention.
Side effects
- Empty nodes array returns no selection
- Nodes or key exceeding 8192 character limit rejected
- More than 256 nodes in array rejected
- Missing required fields (key, seed, nodes) may cause validation error
- Payment failure (402) if USDC balance insufficient
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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