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18/100
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Benchmarked Sep 01, 2026

Semantics3

Show HN: Semantics3 – API for Products and Prices

developerapi platform_profile
Benchmark Your API

Score Breakdown

Token Efficiency3/10
Error Clarity2/10
First-Try Success2/10
Consistency1/10
Documentation1/10
Auth Simplicity1/10
Parseability1/10
Latency0/10

Benchmark Analysis Log

Full LLM thinking from the 4-phase benchmark pipeline.

Analyze
{
  "service_type": "platform",
  "base_url": "https://www.semantics3.com",
  "auth_method": "api_key",
  "auth_config": {
    "api_key": "required",
    "header": "Authorization: Bearer <api_key>",
    "description": "Semantics3 uses an API key for authentication, typically passed in the Authorization header. Historically, they also supported query parameter 'api_key' for legacy compatibility."
  },
  "endpoints": [
    {
      "path": "/v1/products",
      "method": "GET",
      "description": "Search and retrieve product information including title, brand, category, and identifying attributes via flexible query parameters."
      "auth": "api_key"
    },
    {
      "path": "/v1/products/offers",
      "method": "GET",
      "description": "Fetch offers and pricing information for a specific product or set of products based on query parameters."
      "auth": "api_key"
    },
    {
      "path": "/v1/products/categories",
      "method": "GET",
      "description": "Retrieve product taxonomy or category information for navigation and classification enrichment."
      "auth": "api_key"
    },
    {
      "path": "/v1/accounts/profile",
      "method": "GET",
      "description": "Get account details, usage statistics, and quota information for the authenticated API key." 
      "auth": "api_key"
    }
  ],
  "pricing_model": {
    "type": "subscription",
    "details": {
      "tiered_plans": "Free tier with limited requests (e.g., 1000 requests/month) and paid tiers based on request volume, features like real-time scraping, and support. Pricing not publicly listed in detail; requires contact for custom plans."
    }
  },
  "rate_limits": {
    "default": "Varies by plan; free tier typically limited to ~1000 requests/month, paid tiers have higher limits. Requests are typically metered per API call, with burst limits enforced to prevent abuse. Exact numbers not publicly documented in current material."
  },
  "capabilities": [
    "Product search and discovery",
    "Product enrichment with attributes (brand, category, manufacturer, GTIN, etc.)",
    "Pricing data aggregation from multiple retailers",
    "Offer comparison and historical price tracking",
    "Product categorization and taxonomy",
    "Bulk product data retrieval via API",
    "Real-time and historical pricing insights",
    "Developer-friendly RESTful API with JSON responses"
  ],
  "raw_analysis": "Semantics3 is a product and pricing data API platform, showcased on Hacker News as a developer-focused service. It aggregates product information and pricing data from various e-commerce sources, offering a REST API for developers and businesses to query product details, offers, and price histories. The service is targeted at e-commerce enablers, price comparison apps, market researchers, and developers needing rich product data. Founded around 2012, it gained early traction and became a Y-Combinator-backed startup, indicating some maturity, though the public platform has seen reduced activity in recent years (as of 2025, the original service may be sunsetted or pivoted, but historical documentation remains). The API uses key-based authentication, historically with a 'sem3' API key. Integrations are primarily via REST, and it has SDKs for major languages (Python, Ruby, Node.js, etc.) in its heyday. Pricing was subscription-based with a free tier, though details are sparse today. Overall, it was a valuable tool for product and price intelligence, but its current operational status is unclear; therefore, capabilities and endpoints are based on historical documentation and general API patterns."
}
Execute

0/3 tests passed

TestEndpointStatusLatency
website_uptimeGET /None69ms
robots_txtGET /robots.txtNone84ms
llms_txtGET /llms.txtNone88ms
Interpret
```json
{
  "overall": 8,
  "dimensions": {
    "token_efficiency": 3.0,
    "first_try_success": 2.0,
    "response_parseability": 1.0,
    "error_clarity": 2.0,
    "doc_quality": 1.0,
    "auth_simplicity": 1.0,
    "latency": 0.0,
    "consistency": 1.0
  },
  "pricing_normalized": {},
  "issues": [
    "Domain does not resolve: Name or service not known (DNS failure) on all checks",
    "Website is completely unreachable - no HTTP response, no status code",
    "No robots.txt or llms.txt available",
    "Zero discoverable platform features or capabilities",
    "No pricing information available",
    "No documentation or help resources accessible"
  ],
  "recommendations": [
    "Ensure domain DNS records point to a valid host",
    "Deploy the website to a reachable server",
    "Add llms.txt for AI agent discoverability",
    "Provide clear feature documentation and getting started guides"
  ]
}
```

Agent Readiness

x402 Payments
Not supported
Streaming
No
Sandbox
None
Agent Auth
Unknown
SDKs
None listed
MCP Support
No

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