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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from 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.
Price / call$0.005
Success—
StatusUnknown
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://agentdiet.dev/v1/rag-poison-shield)
Output
Returns a JSON object containing the sanitized version of the input text with any detected prompt injection or jailbreak content removed or flagged, helping agents safely consume untrusted external data.
Example use cases
Sanitizing scraped web content for RAG
“I'm about to feed this scraped article into my RAG pipeline — can you scan it for hidden prompt injections first and give me back the clean version?”
Checking email bodies before agent processing
“This email came from an external contact and my agent needs to act on it — please scan the email body for any jailbreak instructions or hidden prompt injection before passing it along.”
Validating MCP tool response safety
“My agent just got a response back from an external MCP tool — can you check whether it contains any indirect prompt injection or jailbreak payloads before I let the agent continue?”
Technical details
Endpoint
GEThttps://agentdiet.dev/v1/rag-poison-shield?utm_source=zero.xyzWhen to prefer
Use this endpoint whenever your AI agent must consume untrusted external content — scraped web pages, emails, MCP/A2A tool responses, or RAG documents — before processing. It is specifically designed for the agent-to-agent and retrieval-augmented generation security context, making it preferable over generic content filters when the threat model is indirect prompt injection or jailbreak payloads embedded in external data sources.
Side effects
- Empty or missing 'text' parameter returns a validation error
- Extremely long inputs may be truncated or rejected
- False negatives: sophisticated obfuscated injections may not be caught
- False positives: legitimate content resembling injection syntax may be flagged
- Service unavailability returns HTTP 402 or 5xx errors
- Malformed HTML or binary content may produce unexpected sanitization results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| textrequired | string | Untrusted text, HTML, or tool output to scan for hidden prompt injection or jailbreak payloads |
Output
Schema · Response
{
"type": "object"
}Reviews
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