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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 (last checked 2026-10-21).
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/indirect-injection-guard)
Output
Returns a JSON object containing the scan result for the submitted text, indicating whether prompt injection or jailbreak payloads were detected, along with a sanitized version of the content safe for downstream agent consumption.
Example use cases
Sanitize scraped web content for agent
“I'm about to feed this HTML from a third-party website into my agent pipeline — can you scan it for hidden prompt injections or jailbreak attempts and give me the cleaned version?”
Screen inbound email before LLM processing
“Check this email body for any embedded prompt injection attacks before my AI assistant reads and summarizes it — I don't want hidden instructions hijacking its behavior.”
Validate A2A tool response safety
“My agent just got back a response from an external tool via MCP — can you run it through the indirect injection guard to make sure there are no hidden instructions or jailbreak payloads buried in it?”
Technical details
Endpoint
GEThttps://shopify-spy.agentdiet.dev/v1/indirect-injection-guard?utm_source=zero.xyzWhen to prefer
Use this endpoint when your agent pipeline ingests content from untrusted external sources — scraped web pages, inbound emails, third-party API responses, MCP tool outputs, or A2A messages — and you need to screen for hidden prompt injections or jailbreak payloads before passing the content to an LLM. Prefer this over manual filtering when you need automated, API-native protection with x402 micropayment support in agentic workflows.
Side effects
- Empty or missing 'text' parameter returns validation error
- Extremely large payloads may timeout or be truncated
- False negatives possible for novel or obfuscated injection techniques
- Payment failure (HTTP 402) if USDC balance is insufficient
- Rate limiting if too many requests are made in quick succession
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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