# Crypto Shark Bazaar – Grammar & Text Correction

> Crypto Shark Bazaar – Grammar & Text Correction is a paid API for AI agents from cryptoshark.duckdns.org, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-11).

Corrects and improves grammar in a given text string using an AI language model, returning a polished result

## Facts

- Endpoint: POST https://cryptoshark.duckdns.org/ai/grammar?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-shark-bazaar-grammar-text-correction-b5382de5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_b9eixaatQXTNw3eCvbS7J

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 crypto-shark-bazaar-grammar-text-correction-b5382de5 -d '<json body>'
```

Example prompt: Fix the grammar in this text for me: 'Their going to the store but forgets they wallet, so me and him had to help them out yesterday.'

## When to prefer this

Choose this endpoint when you need a low-cost ($0.03 USDC), pay-per-call grammar correction service accessible via x402 micropayment protocol, especially in autonomous agent pipelines that handle text correction at scale without committing to a subscription. It is well-suited for lightweight proofreading tasks where the input fits within 6000 characters and the x402 payment rail is already integrated.

## Known failure modes

- Input text exceeds 6000 character limit — request rejected or truncated
- Missing required 'input' field — 400 validation error
- Payment not completed via x402 protocol — 402 Payment Required response
- Downstream AI model unavailable — 500 or timeout error
- Empty string input — may return empty or unchanged result

## How this service works

Low-cost x402 blockchain primitives, market intelligence, and AI utilities for autonomous agents

## Output

A JSON object containing the name of the AI model used (e.g. 'gpt-5.6-luna') and the grammar-corrected version of the submitted text as a string under 'result'.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string",
   "maxLength": 6000
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "model": "gpt-5.6-luna",
  "result": "..."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-shark-bazaar-grammar-text-correction-b5382de5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cryptoshark.duckdns.org](https://www.zero.xyz/host/cryptoshark.duckdns.org/llms.txt)