# fastapi.online — Congratulations Message Generator

> fastapi.online — Congratulations Message 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 congratulations message for a given occasion using AI

## Facts

- Endpoint: POST https://api.fastapi.online/congratulations-message-generate
- 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-congratulations-message-generator-94f02613
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CRKwF72Kk7TIkz-enO2kZ

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-congratulations-message-generator-94f02613 -d '<json body>'
```

Example prompt: Can you generate a congratulations message for my colleague Sarah who just got promoted to Senior Manager?

## When to prefer this

Choose this endpoint when you need a quick, AI-generated congratulations message for any occasion without needing to integrate a full LLM API. It requires no signup and accepts per-call crypto payment, making it ideal for lightweight automation or agentic workflows where bespoke celebratory text is needed on demand.

## Known failure modes

- Empty or missing 'occasion' field returns a validation error
- Occasion string exceeding 500 characters is rejected
- Payment not included results in a 402 Payment Required response
- Server-side model errors may return 500 with no message generated

## 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 generated congratulations message tailored to the specified occasion, returned as a text string suitable for sharing directly or adapting for cards, emails, or social posts.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "occasion": {
   "type": "string",
   "maxLength": 500,
   "minLength": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fastapi-online-congratulations-message-generator-94f02613/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)