# Agentic Swarm Marketplace Product Evidence API

> Agentic Swarm Marketplace Product Evidence API is a paid API for AI agents from api.agentic-swarm-marketplace.com, paid per call via x402, $0.16/call, status unknown (last checked 2026-10-12).

Returns source-attributed product specifications, evidence, and confidence scores for a catalog product ID, with partial verification labeled and no invented manufacturer claims.

## Facts

- Endpoint: GET https://api.agentic-swarm-marketplace.com/x402/v1/commerce/product-evidence?utm_source=zero.xyz
- Price: $0.16/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentic-swarm-marketplace-product-evidence-api-38798d00
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qrKaYyX_-gWc5w8PHC6vU

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 agentic-swarm-marketplace-product-evidence-api-38798d00
```

Example prompt: Can you pull up the source-attributed product evidence and specs for catalog product ID SKU-78342, and tell me which claims are fully verified versus only partially confirmed?

## When to prefer this

Choose this endpoint when you need trustworthy, source-attributed product specifications and evidence for a known catalog product ID — especially in procurement, compliance, or listing accuracy workflows where fabricated or unverified claims would be harmful. Prefer it over generic product lookup APIs when you need confidence scores and partial-verification labeling rather than raw, unvalidated product data.

## Known failure modes

- Missing or invalid productId returns a 400 error
- Product ID not found in catalog returns a 404 or empty evidence set
- Insufficient source data results in low-confidence or partial verification labels
- Payment failure or x402 protocol error prevents response
- Rate limiting or quota exceeded returns a 429 error

## How this service works

Returns source-attributed product evidence, specifications, and confidence for a catalog product ID. Partial verification is labeled — never invents manufacturer claims.

## Output

Returns a structured response containing source-attributed product evidence records, technical specifications, confidence scores for each claim, and clear labeling of fully verified versus partially verified information. Manufacturer claims are only included when backed by sources — nothing is invented or inferred without attribution.

## 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",
     "required": [
      "productId"
     ],
     "properties": {
      "productId": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentic-swarm-marketplace-product-evidence-api-38798d00/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.agentic-swarm-marketplace.com](https://www.zero.xyz/host/api.agentic-swarm-marketplace.com/llms.txt)