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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from llms-generator.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 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://llms-generator.agentdiet.dev/v1/prompt-firewall)
Output
Returns a JSON object containing the sanitized version of the input text with detected prompt-injection or jailbreak payloads removed or flagged, allowing the calling agent to safely process the cleaned content.
Example use cases
Sanitizing scraped web content for an agent
“I'm having my agent browse and summarize web pages — before it processes each page's text, scan it for hidden prompt injections or jailbreak instructions and return the clean, safe version.”
Filtering inbound emails for a support agent
“My AI support agent reads incoming customer emails — can you check this email body for any embedded prompt-injection attacks or jailbreak payloads before the agent acts on it?”
Validating MCP tool response before execution
“My agent just got a response back from an external MCP tool — scan that response payload for hidden adversarial instructions or prompt injection before I let the agent use it.”
Technical details
Endpoint
GEThttps://llms-generator.agentdiet.dev/v1/prompt-firewall?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to process content from untrusted external sources — scraped web pages, third-party API responses, MCP tool outputs, A2A payloads, or user-submitted emails — and must guard against indirect prompt injection or jailbreak attacks before acting on that content. It is especially valuable in agentic pipelines where the agent autonomously fetches and processes external data without human review of each intermediate step.
Side effects
- Empty or missing 'text' parameter returns a 400 validation error
- Extremely long payloads may time out or be truncated
- Highly obfuscated or novel injection techniques may evade detection
- Service unavailability returns 402 or 5xx errors requiring retry
- Non-text binary content passed as text may produce unreliable results
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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