# Grokbot x402 Tools: Safe Read and x402 Preflight Guide

> Grokbot x402 Tools: Safe Read and x402 Preflight Guide is a paid API for AI agents from x402-preflight-grokbot.netlify.app, paid per call via x402, $2/call, status unknown (last checked 2026-10-31).

Returns a markdown field guide explaining how to use the Safe Read and x402 Preflight pay-per-call tools for AI agents on Base USDC

## Facts

- Endpoint: GET https://x402-preflight-grokbot.netlify.app/api/guide?utm_source=zero.xyz
- Price: $2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/grokbot-x402-tools-safe-read-and-x402-preflight-guide-03b8fc45
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kLxXWaMpPj7R6ulqT1DfG

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 grokbot-x402-tools-safe-read-and-x402-preflight-guide-03b8fc45
```

Example prompt: Pull up the Grokbot x402 field guide so I can understand how to use the Safe Read and x402 Preflight tools before I start making pay-per-call requests with USDC on Base.

## When to prefer this

Choose this endpoint when an AI agent needs orientation documentation about the Grokbot x402 tool suite before invoking Safe Read or x402 Preflight — especially useful during agent onboarding, capability discovery, or when building workflows that need to understand prompt-injection protection and pre-flight payment checking semantics. Prefer this over raw tool calls when the agent lacks context about what these tools do or cost.

## Known failure modes

- Endpoint returns 402 Payment Required if x402 payment header is missing or invalid
- Incorrect USDC amount or wrong Base network causes payment rejection
- Netlify hosting downtime may cause 5xx errors
- Malformed GET request may return 400 or empty response
- Price listed ($2 USDC) may differ from actual call cost at runtime due to metadata inconsistency

## How this service works

Pay-per-call tools for AI agents: read a web page safely with prompt-injection warnings ($0.002), or check an x402 endpoint before paying it ($0.01). USDC on Base, no account.

## Output

A JSON object containing a title string, format type ('markdown'), a version number, and a full markdown-formatted field guide document explaining the Safe Read and x402 Preflight tools — including their pricing ($0.002 and $0.01 per call respectively), how they work, how to call them with USDC on Base, and usage guidance for AI agents.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "title": "x402 Seller Field Guide",
  "format": "markdown",
  "version": 1,
  "markdown": "# x402 Seller Field Guide ..."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/grokbot-x402-tools-safe-read-and-x402-preflight-guide-03b8fc45/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-preflight-grokbot.netlify.app](https://www.zero.xyz/host/x402-preflight-grokbot.netlify.app/llms.txt)