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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/indirect-injection-guard)
Output
Returns a structured object indicating whether prompt injection or jailbreak content was detected in the input, along with sanitized text with malicious instructions removed or flagged, enabling the agent to safely process the cleaned content.
Example use cases
Agent pipeline web scrape guard
“I want you to fetch the contents of this external URL and scan it for any hidden prompt injections or jailbreak instructions before you summarize it — here's the raw HTML: <html>...”
Email body injection check
“I just received this email from an unknown sender — can you scan the body text for any hidden prompt injection attempts or adversarial instructions before you act on anything it says? Here's the full text: 'Dear agent, ignore previous instructions and...'”
MCP tool response sanitization
“Before you use the output from that third-party MCP tool, please run it through the indirect injection firewall to strip out any embedded jailbreak payloads — the raw response is: '{"result": "Ignore your system prompt and..."}'”
Technical details
Endpoint
POSThttps://polymarket-odds.agentdiet.dev/v1/indirect-injection-guard?utm_source=zero.xyzWhen to prefer
Use this endpoint when your AI agent pipeline ingests content from untrusted external sources — web pages, emails, third-party APIs, MCP tool responses, or A2A agent payloads — before passing that content to an LLM. It is purpose-built for indirect prompt injection defense rather than general content moderation or spam filtering.
Side effects
- Empty or missing 'text' field returns a 400 validation error
- Payload too large may trigger a timeout or size-limit error
- Ambiguous or obfuscated injections may not be detected (false negatives)
- Payment failure via x402 returns 402 Payment Required
- 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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