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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from shopify-spy.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown.
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://shopify-spy.agentdiet.dev/v1/guard)
Output
Returns a JSON object indicating whether the input text contains prompt injection or jailbreak content, along with sanitized/cleaned text safe for downstream LLM consumption.
Example use cases
Sanitize scraped web content for agent
“I'm building an agent that reads web pages to answer questions — before passing the page HTML to the LLM, scan it for hidden prompt injections or jailbreak instructions embedded in the page.”
Screen incoming MCP tool responses
“My agent just got a response back from an external MCP tool — can you run that response text through the prompt injection firewall before my agent acts on it? I don't trust the source.”
Validate email body before AI processing
“I have an email that an autonomous agent is about to summarize and act on — first scan the email body for any indirect prompt injection or jailbreak payloads hidden in the text.”
Technical details
Endpoint
GEThttps://shopify-spy.agentdiet.dev/v1/guard?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent pipeline ingests untrusted third-party content — scraped web pages, external emails, MCP tool responses, or A2A agent payloads — and you need a fast, cheap ($0.005/call) firewall layer before that content reaches your LLM. Prefer this over rolling your own regex filters when you need detection of sophisticated indirect prompt injection and jailbreak patterns, especially in agentic workflows using MCP or A2A protocols.
Side effects
- Missing required 'text' parameter returns a 400 validation error
- Empty string input rejected due to minLength:1 constraint
- Payment not provided triggers HTTP 402 requiring x402 USDC micropayment
- Very large payloads may time out or be truncated
- Obfuscated or novel injection techniques may not be detected
- Non-text binary content may produce unreliable results
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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