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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from sec-intel.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 injection and jailbreak attacks, returning sanitized text.
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://sec-intel.agentdiet.dev/v1/prompt-injection-shield)
Output
Returns a sanitized version of the input text with hidden prompt injections removed or neutralized, along with detection results indicating whether adversarial content was found and what type of threat was identified.
Example use cases
Sanitize scraped web content before agent ingestion
“I'm about to feed this scraped webpage into our agent pipeline — can you first scan it for hidden prompt injections or jailbreak payloads and give me the sanitized version?”
Screen inbound emails for adversarial instructions
“Before my agent reads and acts on this customer email, run it through the prompt injection firewall to make sure there are no hidden instructions trying to hijack the agent's behavior.”
Validate MCP tool response before chaining
“My agent just got back a response from an external MCP tool — can you check this payload for any embedded prompt injection or jailbreak attempts before I pass it to the next step in the workflow?”
Technical details
Endpoint
POSThttps://sec-intel.agentdiet.dev/v1/prompt-injection-shield?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent is about to ingest or act on content from untrusted external sources — scraped web pages, inbound emails, third-party API responses, MCP tool outputs, or A2A payloads — and you need to ensure no hidden prompt injection or jailbreak instructions are embedded. Prefer this over generic content filters when the specific threat model is adversarial LLM manipulation rather than spam or NSFW content.
Side effects
- Empty or whitespace-only text input returns validation error
- Extremely large payloads may be rejected or truncated
- Sophisticated obfuscated injections may evade detection
- Payment required (HTTP 402) if USDC balance is insufficient
- Timeout on very large HTML documents
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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