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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from polymarket-odds.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://polymarket-odds.agentdiet.dev/v1/mcp-security)
Output
Returns a JSON object indicating whether prompt injection or jailbreak payloads were detected in the submitted text, along with a sanitized version of the content safe for downstream LLM or agent consumption.
Example use cases
Guarding agent from malicious web pages
“I need you to scan this scraped webpage content for any hidden prompt injection attacks before you summarize it for me — here's the raw HTML: '<html>...ignore previous instructions and...</html>'”
Sanitizing MCP tool responses in pipeline
“Before you act on the response from that external MCP tool, run it through the prompt-injection firewall and check if it's trying to hijack your behavior — here's the tool output to scan.”
Screening inbound emails for LLM pipelines
“I have an email that came into my AI support inbox — can you check it for embedded jailbreak payloads or hidden instructions before my agent processes and responds to it?”
Technical details
Endpoint
POSThttps://polymarket-odds.agentdiet.dev/v1/mcp-security?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent pipeline ingests untrusted external content — web pages, emails, tool responses, or A2A payloads — and you need a real-time firewall check before passing that content to an LLM. It is especially valuable in agentic workflows where indirect prompt injection (hidden adversarial instructions embedded in external data) poses a security risk. Prefer it over generic content filters when you specifically need injection-aware sanitization rather than toxicity or spam detection.
Side effects
- Empty or missing 'text' field returns a validation error
- Extremely large payloads may hit size or timeout limits
- False negatives possible for novel or obfuscated injection techniques
- Payment failure (402) if x402 funds are insufficient
- Network timeout for very slow upstream connections
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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