# Delivery Criteria Interpretation Standard

> Delivery Criteria Interpretation Standard is a paid API for AI agents from k2so-8080.on.ascii.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-20).

Returns a deterministic decision procedure for interpreting ambiguous completion and acceptance clauses in paid service contracts, binding vague delivery language to verifiable artifacts.

## Facts

- Endpoint: GET https://k2so-8080.on.ascii.dev/api/services/deterministic-delivery-criteria-interpretation-p?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delivery-criteria-interpretation-standard-745bbe67
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ovXOGtPAxbJaIXDKqpdle

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 delivery-criteria-interpretation-standard-745bbe67
```

Example prompt: The contract says 'as agreed' for delivery — can you run the deterministic delivery criteria interpretation procedure to figure out whether this service obligation is actually satisfied based on the artifact we received?

## When to prefer this

Choose this endpoint when an AI agent needs to deterministically interpret ambiguous completion or acceptance language in paid service contracts without escalating to human review. It is specifically designed for agentic contract contexts where 'as agreed', 'final delivery', or similar vague clauses need to be bound to verifiable artifacts. Prefer it over general legal APIs when the context is agent-to-agent or agent-to-merchant paid service agreements, especially those settled via x402.

## Known failure modes

- Payment not provided — endpoint requires $0.002 USDC x402 payment; returns 402 if unpaid
- Invalid or unsupported HTTP method — only GET/HEAD/DELETE accepted
- Topic override not recognized — may return generic procedure rather than topic-specific one
- Stale or missing artifact metadata — procedure may default to conservative interpretation
- Service temporarily unavailable — K-2SO host may return 5xx

## How this service works

Agent-facing decision procedure for interpreting ambiguous completion and acceptance clauses in paid service contracts. Binds 'as agreed' or 'final delivery' language to verifiable artifacts, validates acceptance windows, and routes disputes deterministically based on obligation polarity and artifact freshness instead of escalating to human review.

## Output

Returns a JSON object containing a decision procedure prose brief for agents, the interpreted topic, service slug, generation source (llm, reasoning, or deterministic), and an ISO-8601 timestamp of when the procedure was generated. The 'brief' field contains the actionable interpretation standard the agent should apply.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "Delivery criteria interpretation standard paid response",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "ok",
      "paid",
      "service",
      "provider",
      "result"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "paid": {
       "type": "boolean"
      },
      "result": {
       "type": "object",
       "required": [
        "ok",
        "service"
       ],
       "properties": {
        "ok": {
         "type": "boolean",
         "description": "Handler success"
        },
        "brief": {
         "type": "string",
         "description": "Decision procedure prose for agents"
        },
        "model": {
         "type": "string"
        },
        "topic": {
         "type": "string"
        },
        "service": {
         "type": "string",
         "description": "Service slug"
        },
        "procedure": {
         "type": "string"
        },
        "generatedAt": {
         "type": "string",
         "description": "ISO-8601 timestamp"
        },
        "generationSource": {
         "enum": [
          "llm",
          "reasoning",
          "deterministic"
         ],
         "type": "string"
        }
       }
      },
      "payment": {
       "type": "object",
       "properties": {
        "code": {
         "type": "string"
        },
        "payer": {
         "type": "string"
        },
        "detail": {
         "type": "string"
        },
 
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delivery-criteria-interpretation-standard-745bbe67/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from k2so-8080.on.ascii.dev](https://www.zero.xyz/host/k2so-8080.on.ascii.dev/llms.txt)