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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 2026-10-23).
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/injection-firewall)
Output
Returns a structured object containing the sanitized version of the input text with any detected prompt injection or jailbreak payloads removed or flagged, allowing the agent to safely process the content downstream.
Example use cases
Securing web scrape pipelines
“I'm about to feed this scraped webpage content into my summarization agent — can you first scan it for any hidden prompt injection instructions embedded in the HTML and return the safe, sanitized text?”
Guarding agent against malicious emails
“Check this incoming email body for any embedded jailbreak or prompt injection attempts before my AI assistant reads and acts on it — I need the cleaned text if it's safe.”
Validating third-party tool responses
“My agent just got back a response from an external MCP tool. Can you run it through the injection firewall to make sure there are no adversarial override instructions hidden inside before I pass it downstream?”
Technical details
Endpoint
POSThttps://shopify-spy.agentdiet.dev/v1/injection-firewall?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your agent pipeline ingests content from untrusted external sources — web pages, emails, third-party API responses, MCP tool outputs, or user-supplied text — and you need a dedicated security layer to strip prompt injection and jailbreak payloads before the content reaches your LLM. Prefer this over manual filtering or no filtering when operating autonomous A2A or MCP workflows where adversarial content injection is a real attack vector.
Side effects
- Empty or missing 'text' field returns a 400 validation error
- Extremely large payloads may be rejected or time out
- Payment failure (HTTP 402) if x402 micropayment is not properly handled
- Ambiguous or obfuscated injections may be missed if deeply encoded
- Non-UTF8 or binary content may cause parsing errors
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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