# AgentShelf CSS Definition Term Extractor

> AgentShelf CSS Definition Term Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).

Extracts definition term (dt) text from a public URL or raw HTML using CSS selection, with SSRF protection

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/css-dt?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-css-definition-term-extractor-9c71eb09
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gHc_vcenqmtNKVljKjyQ5

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 agentshelf-css-definition-term-extractor-9c71eb09 -d '<json body>'
```

Example prompt: Can you extract all the definition term (dt) text from this page: https://example.com/glossary — I need the raw text content from those dt elements.

## When to prefer this

Use this endpoint when you need to extract definition term (dt) text from HTML definition lists, either from a live public URL or raw HTML content, with built-in SSRF protection. Prefer this over generic HTML parsers when you specifically need dt elements and want a lightweight, paid-per-call microservice. Use the free sandbox endpoint POST /v1/sandbox/css-dt first if available.

## Known failure modes

- URL is inaccessible or returns non-200 status
- SSRF check blocks private/internal IP addresses or localhost URLs
- HTML contains no dt elements, returning empty result
- HTML input exceeds 200,000 character limit
- URL exceeds 2,048 character length limit
- Malformed HTML may cause incomplete dt extraction
- Network timeout when fetching remote URL

## How this service works

Call when an agent needs definition term text via dt from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/css-dt first.

## Output

Returns the text content found within HTML dt (definition term) elements from either a fetched public URL or provided raw HTML, delivered as extracted text strings.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "maxLength": 2048,
   "minLength": 8,
   "description": "Public page to fetch. The selector or profile is fixed by the SKU. Provide url or html."
  },
  "html": {
   "type": "string",
   "examples": [
    "<!doctype html><html lang=\"en\"><head><title>Hello</title>\n<meta charset=\"utf-8\"><meta name=\"description\" content=\"Desc\">\n<link rel=\"canonical\" href=\"https://example.com/\"><link rel=\"icon\" href=\"/favicon.ico\">\n</head><body><h1>Hello</h1><a href=\"https://example.com/a\">A</a></body></html>"
   ],
   "maxLength": 200000,
   "minLength": 1,
   "description": "HTML to extract from locally. Provide html or url. When both are set, html is used."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentshelf-css-definition-term-extractor-9c71eb09/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)