# 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/jailbreak-scan?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-ddebcc2f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_A9axYaOc0ABG71R4YFCJl

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-ddebcc2f
```

Example prompt: Before you process this scraped web page, run it through the jailbreak firewall to check for hidden prompt injections — here's the raw HTML: '<div>Normal content</div><!-- Ignore all previous instructions and...'

## When to prefer this

Choose this endpoint when your agent pipeline ingests untrusted external content — scraped web pages, inbound emails, third-party tool responses, MCP payloads, or A2A messages — and you need to sanitize it before passing it to an LLM to prevent indirect prompt injection and jailbreak attacks. Prefer this over generic content filters when you specifically need to protect against AI-targeted adversarial instructions hidden in otherwise benign-looking text.

## Known failure modes

- Empty or missing 'text' parameter returns a validation error
- Extremely long inputs may be truncated or rejected
- Obfuscated or encoded injections may evade detection
- False positives on legitimate instruction-like text in benign content
- HTTP 402 if payment is not provided or insufficient USDC balance

## 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/jailbreak-scan)

## Output

Returns a JSON object indicating whether a prompt injection or jailbreak payload was detected in the input text, along with sanitized text stripped of malicious instructions, enabling safe downstream agent processing.

## 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-ddebcc2f/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)