# AgentShelf Profile Image Alt Extractor

> AgentShelf Profile Image Alt Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-29).

Extracts alt text values from image elements on a public webpage or from provided HTML markup, with SSRF protection.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/profile-img-alt?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-profile-image-alt-extractor-ce49105f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_H-YCCBA_nsAzhMHVmpKVf

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-profile-image-alt-extractor-ce49105f -d '<json body>'
```

Example prompt: Can you pull all the image alt text values from https://example.com/profile — I need to see what alt attributes are set on the images there.

## When to prefer this

Use this endpoint when you need to specifically extract img alt attribute values from a public webpage URL or raw HTML string, especially in agentic pipelines requiring SSRF-safe access. Prefer the free sandbox POST /v1/sandbox/profile-img-alt endpoint first if available; fall back to this paid endpoint when the sandbox is unavailable or rate-limited.

## Known failure modes

- URL is not publicly accessible or returns non-200 status — extraction fails
- SSRF protection blocks private/internal IP ranges or localhost URLs
- HTML input exceeds 200,000 character limit — request rejected
- No img tags with alt attributes found — returns empty result
- Malformed HTML may cause incomplete parsing
- Payment of exactly $0.01 USDC required; missing or incorrect payment causes rejection

## How this service works

Call when an agent needs img alt values extracted from a public page or HTML (SSRF-safe). Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/profile-img-alt first.

## Output

A list or structured collection of alt attribute values extracted from img tags found in the provided URL or HTML. May include empty strings where alt attributes are present but blank, and may omit images with no alt attribute.

## 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 name=\"description\" content=\"Desc\"><meta property=\"og:title\" content=\"OG\">\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-profile-image-alt-extractor-ce49105f/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)