# ApexAPI Instagram Caption Generator

> ApexAPI Instagram Caption Generator is a paid API for AI agents from apex-api-gamma.vercel.app, paid per call via x402, $0.093609/call, status unknown (last checked 2026-10-09).

Generates AI-written captions for Instagram posts based on a text query or topic input

## Facts

- Endpoint: POST https://apex-api-gamma.vercel.app/api/ai/caption/instagram?utm_source=zero.xyz
- Price: $0.093609/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-09
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apexapi-instagram-caption-generator-de7bf4d5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_COI_ilRAVka1ZyJ_jmycE

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 apexapi-instagram-caption-generator-de7bf4d5 -d '<json body>'
```

Example prompt: Write me an engaging Instagram caption for a post about a homemade pasta dinner I had in Rome — keep it warm and food-lover friendly with relevant hashtags.

## When to prefer this

Choose this endpoint when you need a quick AI-generated Instagram caption without managing API keys, paying with USDC on Base per call. Ideal for agents automating social media content workflows where per-call micropayment billing is acceptable.

## Known failure modes

- Empty or vague query may return generic unhelpful caption
- Payment failure in USDC on Base results in 402 response
- Service unavailable returns 5xx error
- Query too long or unsupported content may return 400 error

## How this service works

Crypto, AI, Social Media, Finance, Weather, Tools &amp; more. Pay per call in USDC on Base. No API keys.

## Output

Returns an AI-generated Instagram caption tailored to the provided query or topic, likely including suggested hashtags and engaging copy optimized for Instagram audiences.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Search query or input parameter"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "description": "API response data"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apexapi-instagram-caption-generator-de7bf4d5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apex-api-gamma.vercel.app](https://www.zero.xyz/host/apex-api-gamma.vercel.app/llms.txt)