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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 2026-10-21).
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://sec-intel.agentdiet.dev/v1/tool-poisoning-shield)
Output
Returns an object indicating whether prompt injection or jailbreak content was detected in the input text, along with a sanitized version of the text with malicious instructions removed or neutralized.
Example use cases
Protect agent from malicious web scrape
“I just scraped this webpage to feed into my research agent — can you scan it for any hidden prompt injections or jailbreak payloads before my agent processes it? Here's the raw HTML.”
Sanitize inbound email for AI assistant
“Before you let my AI assistant read and reply to this customer email, run it through the prompt-injection firewall to make sure there are no adversarial instructions embedded in it.”
Validate MCP tool output before pipeline use
“My agent just got a response back from an external MCP tool — scan that payload for any hidden prompt injection attempts or jailbreak content before I pass it downstream in the pipeline.”
Technical details
Endpoint
GEThttps://sec-intel.agentdiet.dev/v1/tool-poisoning-shield?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent pipeline ingests untrusted external content — web pages, emails, tool outputs, or A2A payloads — and you need to detect and strip adversarial prompt injections before processing. Prefer this over generic content filters when the specific threat model is LLM prompt hijacking or jailbreak via indirect injection.
Side effects
- Empty or missing 'text' parameter returns a validation error
- Extremely large payloads may time out or be truncated
- False negatives possible for novel or obfuscated injection techniques
- Non-text binary content may not be parsed correctly
- HTTP 402 returned if payment credentials are missing or insufficient
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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