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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 2026-10-23).
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/injection-firewall)
Output
Returns an object indicating whether the input text contained prompt injection or jailbreak payloads, along with a sanitized version of the text with malicious instructions removed or flagged.
Example use cases
Safe web scraping for AI pipelines
“I'm about to feed this scraped article HTML into my summarization agent — can you first scan it for hidden prompt injections or jailbreak payloads so I know the content is safe to process?”
Email triage agent protection
“My agent is reading incoming emails to triage support tickets — before it acts on each email, scan the body text for any embedded prompt injection attempts that could hijack its behavior.”
MCP tool response validation
“My AI just got back a response from an external MCP tool — can you run that response through the injection firewall to make sure it doesn't contain any hidden instructions trying to redirect my agent?”
Technical details
Endpoint
POSThttps://serp-extract.agentdiet.dev/v1/injection-firewall?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent is consuming content from untrusted external sources — web pages, emails, user-submitted inputs, third-party tool responses, or A2A payloads — and you need to ensure those inputs do not contain hidden instructions designed to manipulate the agent's behavior. Prefer it over generic content filters when your threat model specifically includes indirect prompt injection and jailbreak attacks targeting LLM-based pipelines.
Side effects
- Empty or missing 'text' field returns a 400 validation error
- Very large payloads may exceed size limits and return a 413 error
- Ambiguous or borderline adversarial content may not be detected with full confidence
- Non-text binary data (e.g., raw images) cannot be scanned and will error
- Payment not attached or insufficient funds returns HTTP 402
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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