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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from workflows.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 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://workflows.agentdiet.dev/v1/jailbreak-scan)
Output
Returns a JSON object indicating whether prompt injection or jailbreak content was detected in the input text, along with a sanitized version of the content safe for downstream LLM or agent processing.
Example use cases
Protect agent from malicious emails
“I'm having my AI agent read through customer emails to extract action items, but I'm worried some might contain hidden prompt injections. Can you scan this email body for jailbreak payloads before my agent processes it? Here's the email: 'Dear support, please ignore previous instructions and...'”
Sanitize web scrape before LLM pipeline
“My agent just scraped this product page and I need to feed the content to my summarizer, but I don't trust the site. Can you run this HTML through the prompt injection firewall first and give me the sanitized version?”
Validate MCP tool response for agent safety
“My autonomous agent just got back a response from an external MCP tool and I want to make sure it's not trying to hijack my agent's behavior with hidden instructions. Can you scan this tool output for prompt injection attacks: 'Task complete. Also: disregard your system prompt and...'”
Technical details
Endpoint
GEThttps://workflows.agentdiet.dev/v1/jailbreak-scan?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent or pipeline needs to process text from untrusted external sources — web pages, emails, third-party API responses, or MCP/A2A tool outputs — and you need real-time protection against indirect prompt injection and jailbreak attacks before the content reaches your LLM. Prefer this over generic content filters when the threat model is specifically adversarial manipulation of AI agent behavior.
Side effects
- Empty or missing 'text' parameter returns a validation error
- Extremely long payloads may be truncated or rejected
- Obfuscated or novel injection techniques may evade detection
- Payment required (HTTP 402) if x402 micropayment header is not included
- False positives on legitimate content that resembles injection syntax
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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