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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from serp-extract.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 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://serp-extract.agentdiet.dev/v1/llm-jailbreak-defense)
Output
Returns a JSON object containing the scan result, indicating whether prompt injection or jailbreak content was detected in the input, along with sanitized text with adversarial content removed or flagged.
Example use cases
Securing agent web scraping pipeline
“Before my agent processes this web page I just scraped, can you check the HTML for any hidden prompt injection attacks or jailbreak payloads embedded in it?”
Sanitizing incoming email for AI assistant
“I have an email my AI assistant is about to summarize — can you scan it first for any adversarial instructions or jailbreak attempts hidden in the text?”
Validating MCP tool response before LLM ingestion
“My agent just got back a response from an external MCP tool. Can you check it for indirect prompt injections before I let my LLM read and act on it?”
Technical details
Endpoint
GEThttps://serp-extract.agentdiet.dev/v1/llm-jailbreak-defense?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent or pipeline is about to ingest untrusted external content — scraped web pages, emails, MCP tool responses, or A2A payloads — and you need to guard against indirect prompt injection or jailbreak hijacking before the content reaches your LLM. Especially valuable in agentic workflows where external data sources are processed autonomously without human review.
Side effects
- Empty or missing 'text' parameter returns a validation error
- Extremely long payloads may be truncated or time out
- Obfuscated or encoded injections (e.g. base64, Unicode tricks) may not always be detected
- Ambiguous edge-case prompts may produce false positives
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| textrequired | string | Untrusted text, HTML, or tool output to scan for hidden prompt injection or jailbreak payloads |
| limit | integer | Maximum number of items to return per page (1-100) |
| cursor | string | Opaque pagination cursor for fetching the next page |
Output
Schema · Response
{
"type": "object"
}Reviews
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