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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from preflight.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.
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://preflight.agentdiet.dev/v1/rag-poison-shield)
Output
Returns a structured object indicating whether prompt injection or jailbreak content was detected, along with sanitized text with malicious instructions removed or flagged, allowing safe downstream consumption by AI agents or LLMs.
Example use cases
RAG pipeline content screening
“I'm building a RAG system that pulls from random websites — before indexing any chunk, scan it for embedded prompt injection attacks so nothing malicious gets into my vector store.”
Email-driven agent protection
“My agent reads incoming emails and takes actions based on them — can you check this email body for hidden jailbreak instructions before the agent processes it?”
A2A tool output safety check
“This external A2A tool just returned a response — before I pass it to the next agent in my pipeline, please scan it for any adversarial prompt injection payloads hiding inside.”
Technical details
Endpoint
GEThttps://preflight.agentdiet.dev/v1/rag-poison-shield?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent or RAG pipeline consumes untrusted external content — web pages, emails, tool responses, or A2A payloads — and you need a dedicated firewall layer to strip hidden prompt injections before they reach your LLM. Prefer this over general-purpose content filters when the specific threat model is adversarial LLM manipulation (indirect prompt injection, jailbreaks) rather than generic spam or malware.
Side effects
- Empty or missing 'text' parameter returns validation error
- Extremely long payloads may be truncated or rejected
- Sophisticated obfuscated injections may evade detection
- Payment failure (402) if x402 USDC micropayment is not provided
- False positives on legitimate content that resembles injection patterns
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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