# Agent Delivery Partial Result Check

> Agent Delivery Partial Result Check 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).

Validates whether a delivered agent result meets a minimum fraction threshold relative to expected items, returning acceptance or rejection with mismatch reasons.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/agent-delivery-partial-result-check
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-delivery-partial-result-check-886e8ce1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KPO8ZQKvEIU1UKyT0BFr0

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agent-delivery-partial-result-check-886e8ce1 -d '<json body>'
```

Example prompt: Before I accept and pay for this agent delivery, check if the partial result coverage is acceptable — I expected 100 items, 78 were delivered, and my minimum acceptable fraction is 0.75.

## When to prefer this

Use this endpoint when you need a lightweight, in-memory, stateless check on whether an agent delivery's item count satisfies a caller-defined minimum fraction — especially before approving an x402 payment or accepting an agentic result. Prefer this over building custom fraction logic when you need normalized evidence and explicit accept/reject semantics without external dependencies or data retention.

## Known failure modes

- Missing required parameters (expected_items, delivered_items, or minimum_fraction) result in validation error
- expected_items of zero causes division-by-zero or undefined fraction error
- minimum_fraction outside 0–1 range may return invalid input error
- Non-integer values for expected_items or delivered_items may cause type errors
- Negative item counts may result in rejection or error response

## How this service works

Agent Delivery Partial Result Check: Agent Delivery Partial Result Check checks partial-result coverage against a minimum fraction from bounded caller-supplied values without an external provider. Call Agent Delivery Partial Result Check 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 Delivery Par…

## Output

Returns a structured response containing: explicit acceptance or rejection status, the computed coverage fraction (delivered/expected), normalized evidence of the calculation, contract-specific checks, and any mismatch reasons explaining why the result was rejected (if applicable).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "expected_items": {
   "type": "integer",
   "description": "Expected Items supplied to Agent Delivery Partial Result Check; used only for this bounded calculation and processed in memory without retention."
  },
  "delivered_items": {
   "type": "integer",
   "description": "Delivered Items supplied to Agent Delivery Partial Result Check; used only for this bounded calculation and processed in memory without retention."
  },
  "minimum_fraction": {
   "type": "number",
   "description": "Minimum Fraction supplied to Agent Delivery Partial Result Check; used only for this bounded calculation and processed in memory without retention."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "accepted": true,
   "missing_items": 5,
   "coverage_fraction": 0.95
  },
  "schema": "delx/util-agent-delivery-partial-result-check/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "affb680a7fddb6b209266018c6f793c927bfae39d20b6308e3bfb48ece18d11d",
   "external_calls": 0
  },
  "operation": "delivery_contract:agent_delivery_partial_result_check"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-delivery-partial-result-check-886e8ce1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)