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IMPERIUM PREFLIGHT Injection Firewall
x402
IMPERIUM PREFLIGHT Injection Firewall is a paid API for AI agents from preflight.agentdiet.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-22).
Scans untrusted web pages, emails, MCP responses, or A2A payloads for hidden prompt injections and related threats via an 8-gate readiness audit pipeline.
Price / call$0.005
Success—
StatusUnknown
How this service works
Automated 8-gate pre-flight readiness auditor for x402 v2, Dexter gas floor, IETF MPP, MCP Streamable HTTP, A2A v0.3.0 agent cards, OASF records, and ERC-8004 identity.
Output
Returns a JSON object with a status field ('ok' or error), a data object containing gate-by-gate audit findings, and an roi_proof object including a compression_ratio_pct metric indicating how efficiently the content was analyzed.
Example use cases
Screening untrusted web content before processing
“I'm about to have my agent summarize this external web page — can you first scan it for prompt injections or hidden instructions that might hijack my agent's behavior?”
Validating A2A agent card payload safety
“My agent just received an A2A v0.3.0 agent card from an unknown source — can you audit the payload for any embedded injection attacks before I allow my agent to act on it?”
Checking email content for adversarial manipulation
“I got an email that my AI assistant is going to read and act on — please scan it through the injection firewall first to make sure there are no hidden instructions trying to manipulate the agent.”
Technical details
Endpoint
GEThttps://preflight.agentdiet.dev/v1/injection-firewall?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent needs to safely process content from untrusted external sources — web pages, emails, MCP tool responses, or A2A payloads — before acting on them. It is specifically designed for the x402/MCP/A2A agent ecosystem and provides structured multi-gate audit results rather than a simple binary safe/unsafe flag.
Side effects
- Missing required 'input' field returns validation error
- Invalid method enum value (not GET or POST) causes schema rejection
- Malformed query text may return empty or partial gate results
- Network timeout if upstream scanning pipeline is overloaded
- Payment not processed results in 402 response before audit runs
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {},
"status": "ok",
"roi_proof": {
"compression_ratio_pct": 91.4
}
}
}Tags
x402
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