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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 injection and jailbreak attacks, 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://shopify-spy.agentdiet.dev/v1/injection-firewall)
Output
A JSON object containing the scan result for the submitted text, including whether prompt injection or jailbreak content was detected and a sanitized version of the input text safe for downstream agent consumption.
Example use cases
Screening scraped web content for agent safety
“I just scraped a competitor's product page and want to feed it into my agent pipeline — can you first scan it for any hidden prompt injections or adversarial instructions embedded in the HTML?”
Validating MCP tool response before use
“My agent just got a response back from an external MCP tool and I'm worried it might contain a hidden jailbreak payload — can you run it through the injection firewall and give me the sanitized version?”
Filtering user-submitted email for LLM processing
“A user emailed us some feedback and I want to summarize it with my AI, but I need to first check if the email body contains any indirect prompt injection attempts — can you scan it and return the clean text?”
Technical details
Endpoint
GEThttps://shopify-spy.agentdiet.dev/v1/injection-firewall?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent needs to process untrusted third-party content — such as scraped web pages, external API responses, MCP tool outputs, or user-submitted emails — before feeding that content into an LLM or agent pipeline. It is particularly valuable in autonomous A2A and MCP orchestration scenarios where agent-to-agent communication creates indirect prompt injection risk. Prefer this over general-purpose content filters when you specifically need injection and jailbreak detection tuned for agentic workflows.
Side effects
- Empty or missing 'text' parameter returns a 400 validation error
- Extremely long payloads may hit query string length limits since text is passed as a GET query parameter
- Payment required (HTTP 402) if x402 USDC micropayment is not provided
- Ambiguous or obfuscated injections may not be detected if sufficiently novel
- Non-English injection attempts may have lower detection accuracy
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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