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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 2026-10-28).
Scans untrusted text, HTML, emails, MCP responses, or A2A payloads for hidden prompt injections and jailbreak attempts, returning sanitized content.
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/llm-jailbreak-defense)
Output
Returns an object containing the sanitized version of the submitted text with any detected prompt injection or jailbreak payloads removed or flagged, allowing the agent to safely consume the cleaned content.
Example use cases
Securing an autonomous web-scraping agent
“I have an agent that scrapes news articles and summarizes them — before it passes each article's HTML to the LLM, scan it for any hidden prompt injections or jailbreak payloads embedded in the page.”
Filtering inbound emails for an AI assistant
“My AI email assistant reads and replies to emails automatically — can you scan this incoming email body for any hidden instructions trying to hijack the assistant before it processes it?”
Validating MCP tool responses in an agent pipeline
“My agent just got a response back from an external MCP tool — scan that response payload for any embedded prompt injection attempts before my agent acts on it.”
Technical details
Endpoint
POSThttps://email-verify.agentdiet.dev/v1/llm-jailbreak-defense?utm_source=zero.xyzWhen to prefer
Use this endpoint when your AI agent pipeline ingests content from untrusted external sources — scraped web pages, inbound emails, third-party API responses, MCP tool outputs, or A2A messages — and needs to sanitize them before passing to an LLM to prevent indirect prompt injection attacks hijacking agent behavior.
Side effects
- Empty or missing 'text' field returns a validation error
- Extremely large payloads may hit size limits or time out
- Novel or obfuscated injection techniques not in training may go undetected
- Service unavailability returns a 5xx error; idempotency key can be used to safely retry
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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