# A2A Indirect Prompt-Injection & Jailbreak Firewall

> A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from polymarket-odds.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown (last checked 2026-10-23).

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

## Facts

- Endpoint: POST https://polymarket-odds.agentdiet.dev/v1/workflows/rag-context-sanitizer?utm_source=zero.xyz
- Price: $0.005/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: polymarket-odds.agentdiet.dev
- Website: https://polymarket-odds.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/polymarket-odds-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-41852168
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OujcRy7SQIX8svcuuluo0

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 polymarket-odds-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-41852168 -d '<json body>'
```

Example prompt: Before I pass this scraped web page content into my RAG pipeline, can you scan it for any hidden prompt injections or jailbreak payloads and give me the sanitized version? Here's the raw HTML: <paste content>

## When to prefer this

Choose this endpoint when your agent pipeline ingests content from untrusted external sources — scraped web pages, user-submitted text, third-party API responses, MCP tool outputs, or A2A payloads — and you need to detect and neutralize indirect prompt injection or jailbreak attempts before passing content to an LLM. Especially valuable in multi-agent architectures where one compromised data source could cascade malicious instructions through the entire pipeline.

## Known failure modes

- Empty or missing 'text' field returns a 400 validation error
- Extremely large payloads may exceed processing limits or time out
- Obfuscated or novel injection techniques may evade detection
- Non-text binary content may not be processed correctly
- Payment not completed (402) blocks execution until x402/MPP payment is made

## 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://polymarket-odds.agentdiet.dev/v1/workflows/rag-context-sanitizer)

## Output

Returns a JSON object containing the sanitized version of the input text with any detected prompt injection or jailbreak content removed or flagged, allowing the agent to safely use the cleaned output in downstream LLM calls or RAG pipelines.

## 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/polymarket-odds-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-41852168/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from polymarket-odds.agentdiet.dev](https://www.zero.xyz/host/polymarket-odds.agentdiet.dev/llms.txt)