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Agent Delivery Quality Score
x402
Agent Delivery Quality Score 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).
Calculates a weighted quality score for agent deliveries by combining completeness, validity, freshness, and latency metrics to produce an accept/reject decision.
Price / call$0.001
Success—
StatusUnknown
How this service works
Agent Delivery Quality Score: Agent Delivery Quality Score calculates a transparent weighted score from completeness, validity, freshness, and latency from bounded caller-supplied values without an external provider. Call Agent Delivery Quality Score before paying for or accepting an x402 or agent delivery assembled from caller-supplied challenge and result metadata. Returns contract-specific checks, normalized evidence, mismatch reasons, and an explicit acceptance or rejection status for Agent…
Output
Returns a weighted composite quality score, an explicit accept or reject status, normalized evidence values for each input dimension, contract-specific check results, and mismatch reasons explaining any failures.
Example use cases
Pre-payment x402 delivery gate
“I just received an agent delivery for my x402 task and want to know if it's worth paying for — run a quality score check on it with completeness 0.95, validity 0.8, freshness 0.6, latency 500, and equal weights across all four dimensions.”
Low-freshness delivery rejection check
“This agent result came back with completeness 0.75, validity 0.9, freshness 0.2, and latency 200 — weight freshness heavily at 0.5, and tell me if that stale result should be accepted or rejected.”
High-throughput delivery acceptance pipeline
“Score this batch of agent delivery metrics — completeness 1.0, validity 1.0, freshness 0.95, latency 80 — using weights 0.25 each, and confirm whether this delivery passes quality checks so I can auto-accept it.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/agent-delivery-quality-scoreWhen to prefer
Use this endpoint when you need a transparent, deterministic quality gate before accepting or paying for an x402 agent delivery. It is ideal when you have caller-supplied metrics and want a normalized, weighted score with an explicit pass/fail verdict rather than running ad hoc threshold logic yourself. Prefer this over manual scoring when auditability and mismatch explanations are required.
Side effects
- Missing required input fields (completeness, validity, freshness, latency) returns a validation error
- Out-of-range values (e.g. scores above 1.0 or negative latency) may produce incorrect scoring
- Weights object with more than 128 properties is rejected
- Malformed JSON body returns a 400 bad request
- Payment not sent or insufficient USDC results in 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| latency | number | Latency supplied to Agent Delivery Quality Score; used only for this bounded calculation and processed in memory without retention. |
| weights | object | Weights supplied to Agent Delivery Quality Score; used only for this bounded calculation and processed in memory without retention. |
| validity | number | Validity supplied to Agent Delivery Quality Score; used only for this bounded calculation and processed in memory without retention. |
| freshness | number | Freshness supplied to Agent Delivery Quality Score; used only for this bounded calculation and processed in memory without retention. |
| completeness | number | Completeness supplied to Agent Delivery Quality Score; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"score": 0.9400000000000001,
"metrics": {
"latency": 0.8,
"validity": 1,
"freshness": 0.9,
"completeness": 1
},
"weight_sum": 1,
"transparent": true
},
"schema": "delx/util-agent-delivery-quality-score/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "cce23822ce9e5cb7271993a6931664faf8680057ceef67cebf099e946d13ba8f",
"external_calls": 0
},
"operation": "delivery_contract:agent_delivery_quality_score"
}
}Tags
x402
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