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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from defi-yield.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://defi-yield.agentdiet.dev/v1/llm-jailbreak-defense)
Output
Returns a JSON object containing the sanitized version of the input text with any detected prompt injection or jailbreak payloads removed or flagged, along with detection signals indicating whether malicious content was found.
Example use cases
Safe web scraping for agent pipelines
“I'm building an agent that scrapes third-party websites — before passing any scraped HTML to the LLM, scan it for hidden prompt injections and return only the sanitized text so my agent isn't hijacked.”
Email phishing and injection triage
“I just received this suspicious email and I want to feed it to my AI assistant — can you first scan it for embedded jailbreak or prompt injection payloads and tell me if it's safe?”
MCP tool response integrity check
“My agent just got a response back from an external MCP tool and I'm worried it might contain adversarial instructions — scan this payload for hidden prompt injections before my LLM acts on it.”
Technical details
Endpoint
GEThttps://defi-yield.agentdiet.dev/v1/llm-jailbreak-defense?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent processes untrusted external content — scraped web pages, inbound emails, third-party API responses, or MCP/A2A payloads — and you need a dedicated firewall layer before that content reaches your LLM. Prefer this over generic content filters when the threat model specifically involves indirect prompt injection or jailbreak attempts targeting an AI agent rather than traditional spam or malware detection.
Side effects
- Empty or missing 'text' parameter returns a 400 validation error
- Extremely long inputs may be truncated or rejected
- Sophisticated obfuscated injections may evade detection (false negatives)
- Payment failure (HTTP 402) if x402 USDC balance is insufficient
- Network timeout on large HTML payloads
- Non-text binary content may not be correctly parsed
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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