# HALOWERK Social Post Generator from Recording

> HALOWERK Social Post Generator from Recording is a paid API for AI agents from medien.halowerk.com, paid per call via x402, $0.035/call, status unknown (last checked 2026-10-31).

Transcribes an audio/video recording and generates platform-tailored social media posts (LinkedIn, X, Instagram, Facebook, Threads, Mastodon) with hashtags and clip timestamps, in multiple variants per platform.

## Facts

- Endpoint: POST https://medien.halowerk.com/v1/social-posts?utm_source=zero.xyz
- Price: $0.035/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-social-post-generator-from-recording-63cbd5bd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ws1p5MqZ490LXXLmhH6N3

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 halowerk-social-post-generator-from-recording-63cbd5bd -d '<json body>'
```

Example prompt: Take my 45-minute podcast episode at https://example.com/episode12.mp3 and write social posts for LinkedIn, X, and Instagram — give me 2 variants each, in English, with hashtags and timestamps for clip pairing.

## When to prefer this

Choose this endpoint when you need to repurpose an existing audio or video recording into ready-to-publish social posts across multiple platforms in a single call, especially when platform-specific formatting, length enforcement, hashtag generation, and clip timestamp alignment are all needed together. It is particularly strong for podcast producers, webinar marketers, and content teams who want multi-platform output with variant drafts without running separate transcription and copywriting steps.

## Known failure modes

- Recording URL not publicly accessible — returns error asking for a valid URL or base64 content
- File exceeds supported duration (>120 minutes) — billing and processing cap exceeded
- Unsupported media format — transcription fails
- Language detection fails on very short or silent recordings
- base64 payload too large (>12 MB) — must use URL instead
- Invalid platform enum value — schema validation error
- duration_minutes missing or out of range (1–120) — rejected

## How this service works

Takes a recording of up to 120 minutes and the platforms you want, and writes posts for each: a LinkedIn post, an X post or short thread, an Instagram caption, and so on, each within the platform length limit (checked and trimmed here), with fitting hashtags and a reference to the moment in the recording, for clip pairing. Several variants per platform are possible.

## Output

A structured response containing one or more drafted posts per requested platform, each respecting that platform's character/length limits, with relevant hashtags, a reference timestamp pointing to the relevant moment in the recording for clip pairing, and up to 3 variants per platform if requested.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "source": {
   "type": "object",
   "properties": {
    "url": {
     "type": "string",
     "maxLength": 2048,
     "description": "Public http(s) URL of the file."
    },
    "filename": {
     "type": "string",
     "maxLength": 260
    },
    "content_base64": {
     "type": "string",
     "maxLength": 12000000,
     "description": "The file inline, base64. Larger files by url."
    }
   },
   "description": "The recording. Either url or content_base64.",
   "additionalProperties": false
  },
  "language": {
   "type": "string",
   "maxLength": 12,
   "description": "Spoken language (BCP-47). Omit to detect."
  },
  "variants": {
   "type": "integer",
   "default": 1,
   "maximum": 3,
   "minimum": 1
  },
  "platforms": {
   "type": "array",
   "items": {
    "enum": [
     "linkedin",
     "x",
     "instagram",
     "facebook",
     "threads",
     "mastodon"
    ],
    "type": "string"
   },
   "default": [
    "linkedin",
    "x"
   ],
   "maxItems": 6,
   "minItems": 1,
   "uniqueItems": true
  },
  "output_language": {
   "enum": [
    "de",
    "en",
    "es",
    "fr",
    "it",
    "nl",
    "pt",
    "pl",
    "tr",
    "sv",
    "da",
    "cs",
    "ru",
    "uk",
    "ja",
    "zh",
    "ko",
    "ar"
   ],
   "type": "string",
   "description": "Language of the text. Default: spoken language."
  },
  "duration_minutes": {
   "type": "integer",
   "maximum": 120,
   "minimum": 1,
   "description": "Length in started minutes — this is what you are billed for."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-social-post-generator-from-recording-63cbd5bd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from medien.halowerk.com](https://www.zero.xyz/host/medien.halowerk.com/llms.txt)