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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from company-enrich.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://company-enrich.agentdiet.dev/v1/system-prompt-guard)
Output
Returns an object indicating whether prompt injection or jailbreak content was detected in the submitted text, along with a sanitized version of the text with malicious instructions removed or flagged, enabling safe downstream use by an AI agent.
Example use cases
Sanitizing scraped webpage before LLM summarization
“I just scraped this article from an untrusted website — before you summarize it, run it through the prompt injection firewall to make sure there are no hidden instructions embedded in the HTML that could hijack you.”
Screening inbound email for jailbreak payloads
“I have an email from an unknown sender that my agent is about to process. Can you scan the full email body for any hidden prompt injection or jailbreak attempts before letting the agent read it?”
Validating MCP tool response before agent action
“My agent just got a response back from an external MCP tool. Check that response text for any embedded adversarial prompts or jailbreak instructions before my agent uses it to take further actions.”
Technical details
Endpoint
GEThttps://company-enrich.agentdiet.dev/v1/system-prompt-guard?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent pipeline consumes content from untrusted external sources — web scrapes, inbound emails, third-party MCP/A2A tool responses — and you need a lightweight, per-call firewall to detect and strip hidden prompt injections before that content influences agent behavior. Prefer it over manual content filtering when you need structured detection results and sanitized output in a single call, especially within an agentic workflow where speed and automation matter.
Side effects
- Empty or missing 'text' parameter returns a validation error
- Very large payloads may time out or be truncated
- Highly obfuscated or novel injection techniques may evade detection
- Non-text binary content may not be correctly parsed
- HTTP 402 payment required if x402 payment header is missing or insufficient
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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