# A2A Indirect Prompt-Injection & Jailbreak Firewall

> A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from company-enrich.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown (last checked 2026-10-21).

Scans untrusted text, HTML, emails, MCP responses, or A2A payloads for hidden prompt injections and jailbreak attempts, returning sanitized output.

## Facts

- Endpoint: GET https://company-enrich.agentdiet.dev/v1/injection-guard?utm_source=zero.xyz
- Price: $0.005/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: company-enrich.agentdiet.dev
- Website: https://company-enrich.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/company-enrich-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-2256a985
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1la1dtzRXgsBxzcCVlV70

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 company-enrich-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-2256a985
```

Example prompt: Before my agent processes this scraped webpage content, run it through the injection-guard firewall to check for hidden prompt injections or jailbreak payloads and give me back the sanitized version: [paste untrusted HTML or text here].

## When to prefer this

Use this endpoint when your AI agent or pipeline is about to consume untrusted external content — scraped web pages, user-submitted text, third-party API responses, MCP tool outputs, or A2A agent messages — and you need to strip hidden prompt injections or jailbreak payloads before they reach your LLM. Prefer this over generic input validation when the threat model specifically involves adversarial text crafted to manipulate AI behavior rather than standard data quality issues.

## Known failure modes

- Empty or missing 'text' parameter returns a 400 validation error
- Extremely long payloads may exceed request size limits
- False negatives possible for novel or obfuscated injection techniques
- Service unavailability returns 402 or 5xx if payment or server issues occur
- Non-text binary content may not be correctly parsed or scanned

## How this service works

Scans untrusted web pages, emails, MCP responses, or A2A payloads for hidden prompt injections and returns sanitized text. (Live x402 v2, IETF MPP & MCP endpoint at https://company-enrich.agentdiet.dev/v1/injection-guard)

## Output

Returns a structured object containing the sanitized version of the input text with any detected prompt injection or jailbreak content neutralized, along with detection metadata indicating whether threats were found.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "text": {
   "type": "string",
   "minLength": 1,
   "description": "Untrusted text, HTML, or tool output to scan for hidden prompt injection or jailbreak payloads"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/company-enrich-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-2256a985/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from company-enrich.agentdiet.dev](https://www.zero.xyz/host/company-enrich.agentdiet.dev/llms.txt)