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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from email-verify.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://email-verify.agentdiet.dev/v1/jailbreak-scan)
Output
Returns a JSON object containing the scan result, including whether prompt injection or jailbreak content was detected, and a sanitized version of the input text with any malicious instructions removed or flagged.
Example use cases
Protect agent from malicious web content
“I'm about to feed this scraped blog post to my AI agent — can you scan it for any hidden prompt injection attacks or jailbreak instructions first, and give me back the clean, safe text?”
Screen incoming email for adversarial instructions
“This email from an unknown sender is going to be processed by my automated agent. Can you check the email body for any embedded jailbreak or prompt injection attempts before I let my agent read it?”
Sanitize MCP tool response before LLM ingestion
“My agent just got back a response from an external MCP tool and I don't fully trust it — please scan this payload for any hidden instructions or adversarial content trying to manipulate my LLM.”
Technical details
Endpoint
GEThttps://email-verify.agentdiet.dev/v1/jailbreak-scan?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent pipeline ingests content from untrusted external sources — scraped web pages, inbound emails, third-party MCP/A2A tool responses — and you need to detect and neutralize indirect prompt injection or jailbreak payloads before they reach your LLM. Prefer this over generic content moderation tools when the threat model is specifically adversarial manipulation of AI agents via crafted text.
Side effects
- Empty or missing 'text' parameter returns a validation error
- Extremely long payloads may be truncated or rejected
- Obfuscated injections using unusual encoding may evade detection
- Network timeout if upstream service is unavailable
- HTTP 402 Payment Required if x402 micropayment is not included
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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