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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 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 sanitized version of the submitted text with prompt injection and jailbreak content removed or flagged, along with detection metadata indicating whether malicious payloads were found.
Example use cases
Sanitize scraped web page for agent
“I'm about to feed this web page's HTML into you for summarization — can you first scan it for any hidden prompt injection or jailbreak payloads and give me only the safe, sanitized text?”
Screen inbound email before processing
“This email came in from an unknown sender and I want you to check it for embedded jailbreak instructions or hidden prompt injections before you do anything with it.”
Validate MCP tool response safety
“That MCP tool just returned a response — can you run it through the indirect injection guard to make sure it doesn't contain adversarial instructions before you act on it?”
Technical details
Endpoint
GEThttps://polymarket-odds.agentdiet.dev/v1/indirect-injection-guard?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent is about to process content from untrusted external sources — scraped web pages, inbound emails, third-party API responses, MCP tool outputs, or A2A agent payloads — and needs to guard against indirect prompt injection or jailbreak attacks before that content influences agent behavior. Prefer this over general content moderation endpoints when the specific threat model is adversarial LLM instruction hijacking rather than harmful content.
Side effects
- Empty or whitespace-only text input returns a validation error
- Extremely large payloads may time out or be truncated
- Obfuscated or encoded injections may evade detection if not decoded first
- Non-text binary content is not supported
- Payment failure via x402 returns HTTP 402 before scan occurs
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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