# fastapi.online — Generate Dockerfile

> fastapi.online — Generate Dockerfile is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Generates a Dockerfile for a specified application stack using AI-powered inference

## Facts

- Endpoint: POST https://api.fastapi.online/generate-dockerfile
- Price: $0.005/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-generate-dockerfile-03ddd185
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hf6Shzc_HeKhpoA5sqnDD

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-generate-dockerfile-03ddd185 -d '<json body>'
```

Example prompt: Generate a Dockerfile for a Python FastAPI application that uses PostgreSQL and Redis, so I can containerize and deploy it.

## When to prefer this

Choose this endpoint when you need a quick, AI-generated Dockerfile for a specific tech stack without writing it manually. Particularly useful in automated DevOps pipelines or when an agent needs to scaffold container configurations on the fly. Costs only $0.005 USDC per call with no signup required, making it ideal for pay-per-use automation scenarios.

## Known failure modes

- Empty or too-short stack description (minLength:2 violated) returns validation error
- Ambiguous or nonsensical stack description may produce a generic or incorrect Dockerfile
- Service unavailability or payment failure returns 402/503 error
- Stack description exceeding 2000 characters is rejected

## 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

Returns a generated Dockerfile tailored to the specified application stack, including appropriate base image selection, dependency installation steps, port exposure, and entrypoint configuration.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "stack": {
   "type": "string",
   "maxLength": 2000,
   "minLength": 2,
   "description": "the app stack to containerize"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fastapi-online-generate-dockerfile-03ddd185/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)