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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from json-repair.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://json-repair.agentdiet.dev/v1/indirect-injection-guard)
Output
Returns a response object indicating whether prompt injection or jailbreak content was detected in the input, along with sanitized text with adversarial instructions removed or flagged, allowing the agent to safely consume the cleaned content
Example use cases
Protecting agent from malicious web pages
“I'm about to have my agent read and summarize this article I scraped, but first can you scan the raw HTML for any hidden prompt injections or instructions that might hijack the agent's behavior?”
Screening inbound emails for jailbreak payloads
“Before my AI assistant processes this incoming email from an unknown sender, scan the full email body for any embedded prompt injection or jailbreak attempts — I don't want it manipulating my agent.”
Validating MCP tool responses before use
“My agent just got back a response from an external MCP tool and I want to make sure it's safe — can you run it through the injection guard to check for any hidden adversarial instructions before I let the agent act on it?”
Technical details
Endpoint
GEThttps://json-repair.agentdiet.dev/v1/indirect-injection-guard?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent needs to process untrusted external content — scraped web pages, incoming emails, third-party API responses, or MCP/A2A tool outputs — before acting on them. It is especially valuable in multi-agent pipelines where one agent's output feeds into another, creating indirect injection attack surfaces. Prefer this over manual filtering when you need automated, real-time scanning integrated into an agent workflow with micropayment support via x402.
Side effects
- Empty or missing 'text' parameter returns a validation error
- Extremely large payloads may be truncated or rejected
- Sophisticated obfuscated injections may evade detection
- Non-text binary content may produce unexpected results
- Payment failure (HTTP 402) if x402 micropayment is not properly handled
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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