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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 attempts, 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/mcp-injection-firewall)
Output
Returns a structured object containing the scan result for the submitted text, including whether prompt injection or jailbreak payloads were detected and a sanitized version of the input safe for downstream agent consumption.
Example use cases
Sanitizing scraped web content for agents
“I just scraped this article from an external site — can you run it through the injection firewall to strip out any hidden prompt-injection payloads before you summarize it for me?”
Checking MCP tool responses before use
“Before you act on that MCP tool response, please scan it for embedded jailbreak instructions — I don't trust the source and want to make sure nothing malicious is hiding in there.”
Validating user-submitted email content
“A user just submitted this email body to our agent pipeline. Can you check it for indirect prompt injection or jailbreak attempts before we let the agent process it?”
Technical details
Endpoint
GEThttps://polymarket-odds.agentdiet.dev/v1/mcp-injection-firewall?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent is about to process any externally sourced text — web scrapes, emails, MCP tool outputs, or A2A payloads — and you need a dedicated security layer to detect and strip prompt injection or jailbreak attempts before they reach your model. It is particularly valuable in automated agent pipelines where untrusted third-party content flows directly into an LLM context window.
Side effects
- Empty or missing 'text' parameter returns a validation error
- Very long inputs may be truncated or rejected depending on size limits
- False negatives are possible for novel or obfuscated injection techniques
- Payment not completed (HTTP 402) if x402 micropayment is not properly handled
- Network timeout if the scanning service is overloaded
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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