# DevX Agent Tools – Web Link & SEO Metadata

> DevX Agent Tools – Web Link & SEO Metadata is a paid API for AI agents from devx-x402-tools.nextill-pos.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-29).

Fetches a URL and returns its title, description, OpenGraph tags, icons, RSS/Atom feeds, and final resolved URL as structured JSON for $0.001 USDC per call

## Facts

- Endpoint: GET https://devx-x402-tools.nextill-pos.workers.dev/v1/web/meta?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/devx-agent-tools-web-link-seo-metadata-080f493a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xEEeYqn63rtg_1mGTCDmg

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 devx-agent-tools-web-link-seo-metadata-080f493a
```

Example prompt: Can you pull the title, description, favicon, and any RSS feeds from https://blog.example.com so I can build a link preview card for it?

## When to prefer this

Choose this endpoint when you need lightweight link/SEO metadata (title, description, OG tags, favicon, feeds) for a URL without paying for a full Markdown page fetch. It is cheaper ($0.001 vs $0.002) than the full web-reader endpoint and ideal for link preview generation, feed discovery, and SEO audits. Requires no API key or signup; payment is per-call in USDC on Base via x402.

## Known failure modes

- Invalid or malformed URL returns an error without charging
- Upstream site is unreachable or times out — not charged
- Site blocks headless fetches (403/429) — HTTP status reflected in response
- URL resolves to non-HTML content (e.g. PDF) — may return partial or empty metadata
- Redirect loops cause resolution failure — not charged

## How this service works

Pay-per-call utilities for AI agents, no API key or signup: read any web page as clean Markdown ($0.002), link/SEO metadata ($0.001), domain DNS + SPF/DMARC email-security audit ($0.003), ERC-20 token safety pre-check ($0.005), crypto address validation, on-chain payment verification, EIP-681/BIP21/Solana Pay payment requests with QR, multichain USDC balances ($0.01). x402 v2, USDC on Base. Invalid input / upstream failure is never charged.

## Output

A JSON object containing: page title, meta description (nullable), HTTP status code, final resolved URL after redirects, array of icon/favicon URLs, array of RSS/Atom feed URLs, and an OpenGraph object with social preview fields (image, type, etc.).

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "feeds": [],
  "icons": [
   "https://example.com/favicon.ico"
  ],
  "title": "Example Domain",
  "status": 200,
  "final_url": "https://example.com/",
  "opengraph": {},
  "description": null
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/devx-agent-tools-web-link-seo-metadata-080f493a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from devx-x402-tools.nextill-pos.workers.dev](https://www.zero.xyz/host/devx-x402-tools.nextill-pos.workers.dev/llms.txt)