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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from domain-osint.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 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://domain-osint.agentdiet.dev/v1/injection-guard)
Output
Returns a structured object containing the sanitized version of the input text with any detected prompt injection or jailbreak payloads removed or flagged, along with detection signals indicating what threats were found.
Example use cases
Screening scraped web content for agents
“My agent just fetched this webpage to summarize it — before it processes the HTML, can you scan it for any hidden prompt injection instructions embedded in the content and give me the clean version?”
Validating MCP tool response before use
“I got this MCP tool response back from an external server and I want to pass it to my LLM, but I'm worried it might contain manipulation payloads — can you check it for jailbreak attempts and sanitize it first?”
Filtering user-submitted email for injection attacks
“A user just submitted this email to my AI-powered inbox — can you scan it for any indirect prompt injection or jailbreak content hidden in the text before my agent acts on it?”
Technical details
Endpoint
GEThttps://domain-osint.agentdiet.dev/v1/injection-guard?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent needs to safely process untrusted external content — web pages, emails, MCP tool responses, or A2A payloads — before passing them into an LLM context. It is specifically designed for agent-to-agent and MCP pipeline security scenarios, making it preferable over generic content filters when the threat model is indirect prompt injection or jailbreak payloads embedded in structured or semi-structured data.
Side effects
- Empty or missing 'text' parameter returns a 400 validation error
- Extremely long text inputs may be truncated or rejected
- False negatives: novel or obfuscated injection techniques may not be detected
- False positives: legitimate instructional content may be flagged as injection
- Service unavailability or payment failure returns 402 or 5xx error
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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