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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-injection and jailbreak attacks, 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://polymarket-odds.agentdiet.dev/v1/llm-guard)
Output
Returns a JSON object containing the scan result for the submitted text, including whether a prompt injection or jailbreak payload was detected and a sanitized version of the text safe for downstream LLM processing.
Example use cases
Sanitize scraped web content before agent use
“I need you to check this HTML I scraped from an external website for hidden prompt injections before you summarize it — can you run it through the firewall and give me the clean text?”
Guard agent pipeline from malicious email
“Before my agent acts on this email body, scan it for any embedded jailbreak instructions or prompt injection attempts and tell me if it's safe to process.”
Validate MCP tool response before chaining
“I'm about to pass this MCP tool response to the next step in my agent workflow — first, scan it for any hidden prompt injection payloads and return the sanitized version I should use instead.”
Technical details
Endpoint
GEThttps://polymarket-odds.agentdiet.dev/v1/llm-guard?utm_source=zero.xyzWhen to prefer
Use this endpoint when your AI agent needs to process content from untrusted external sources — scraped web pages, third-party emails, MCP tool responses, or A2A payloads — before feeding that content to an LLM, to prevent indirect prompt injection and jailbreak attacks from hijacking your agent's behavior.
Side effects
- Empty or missing 'text' parameter returns a 400 validation error
- Very large payloads may hit length limits or timeout
- Sophisticated obfuscated injections may evade detection (false negatives)
- Payment failure or insufficient balance returns HTTP 402
- 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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