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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 2026-10-21).
Scans untrusted text, HTML, emails, MCP responses, or A2A payloads for hidden prompt injections and jailbreak attempts, 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://polymarket-odds.agentdiet.dev/v1/llm-jailbreak-defense)
Output
Returns an object containing the sanitized version of the input text with any detected prompt injection or jailbreak payloads removed or flagged, along with detection metadata indicating whether a threat was found.
Example use cases
Safe web scraping pipeline for agents
“I just scraped this article HTML from an external website — can you scan it for any hidden prompt injection instructions before you summarize it for me?”
Email safety check for AI inbox agent
“Before my email assistant responds to this incoming message, run it through the prompt injection firewall to make sure there's no jailbreak payload hidden in the text.”
MCP tool output sanitization
“My agent just got a response back from an external MCP tool — can you check that response for embedded jailbreak attempts and return the clean version before I let the agent act on it?”
Technical details
Endpoint
GEThttps://polymarket-odds.agentdiet.dev/v1/llm-jailbreak-defense?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent pipeline ingests content from untrusted external sources — web scrapes, emails, third-party API or MCP tool responses, or A2A payloads — and you need a dedicated security layer to detect and neutralize indirect prompt injection or jailbreak attempts before that content reaches your LLM. Prefer this over general-purpose content filters when the specific threat model is adversarial prompt manipulation targeting AI agents.
Side effects
- Empty or missing 'text' parameter returns a 400 validation error
- Extremely long input text may be truncated or rejected
- Payment failure (HTTP 402) if x402 USDC payment is not attached or insufficient
- False negatives: novel or obfuscated injection techniques may not be detected
- Service unavailability returns 5xx errors
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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