# 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 text.

## Facts

- Endpoint: GET https://company-enrich.agentdiet.dev/v1/indirect-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-99e62648
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PQMLbZ7oJ3bKLJsiRNCYG

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-99e62648
```

Example prompt: Before you process that scraped web page, run it through the indirect injection guard and give me the sanitized version — I want to make sure there are no hidden prompt injections or jailbreak payloads lurking in the HTML.

## When to prefer this

Choose this endpoint when your AI agent pipeline ingests content from untrusted external sources — scraped web pages, third-party API responses, MCP tool outputs, A2A payloads, or user-submitted emails — and you need a dedicated security layer to strip hidden prompt injections and jailbreak payloads before those inputs reach your LLM. Prefer it over generic content filtering when you specifically need protection against adversarial instruction injection targeting AI agents.

## Known failure modes

- Empty or missing 'text' parameter returns a 400 validation error
- Extremely long inputs may time out or be truncated
- False negatives possible for novel or obfuscated injection techniques not yet in the detection ruleset
- Non-text binary content may not be parseable
- HTTP 402 payment required if USDC micropayment is not included

## 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/indirect-injection-guard)

## Output

Returns a structured object containing the sanitized version of the input text with hidden prompt injection attempts and jailbreak payloads removed or flagged, 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-99e62648/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)