# fastapi.online — Meta Description Generator

> fastapi.online — Meta Description Generator is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Generates a concise meta description for a given piece of content, suitable for SEO or page summaries

## Facts

- Endpoint: POST https://api.fastapi.online/meta-description
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fastapi-online-meta-description-generator-4f407c10
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2CXZKL-cONXGS8JafU1lT

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 fastapi-online-meta-description-generator-4f407c10 -d '<json body>'
```

Example prompt: Generate a meta description for the following article text — keep it under 160 characters and make it punchy for SEO: 'We review the top 10 JavaScript frameworks for 2025, comparing performance, ecosystem, and developer experience to help you pick the best one for your next project.'

## When to prefer this

Choose this endpoint when you need a quick, cheap ($0.001 USDC), no-signup-required meta description generation with configurable length, especially in automated pipelines where you want crypto micropayment billing per call rather than a subscription. It is well-suited for bulk CMS workflows, agent-driven SEO enrichment, or developer tooling where you need a lightweight summarization step without integrating a full LLM API.

## Known failure modes

- Content too short or empty — returns validation error
- max_length out of bounds (below 50 or above 300) — returns 422 Unprocessable Entity
- Content exceeds 20,000 character limit — returns 422 error
- Payment not included or insufficient — returns HTTP 402 Payment Required
- Model inference timeout — returns 500 or timeout error

## How this service works

Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&amp;A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding &amp; crypto utilities, date/time calculators, geo/coordinate math, math &amp; finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.

## Output

A short, generated meta description string derived from the input content, trimmed to fit within the specified max_length (50–300 characters), suitable for use as an HTML meta description or search engine snippet.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "content": {
   "type": "string",
   "maxLength": 20000,
   "minLength": 1
  },
  "max_length": {
   "type": "integer",
   "maximum": 300,
   "minimum": 50
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fastapi-online-meta-description-generator-4f407c10/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.fastapi.online](https://www.zero.xyz/host/api.fastapi.online/llms.txt)