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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 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://serp-extract.agentdiet.dev/v1/mcp-security)
Output
Returns a structured object containing the scan results: detected injection patterns, threat flags, sanitized version of the input text, and metadata about what was found or removed. Supports paginated results up to 100 items per page.
Example use cases
Sanitizing scraped web content for agents
“Before my agent processes this web page I just scraped, can you check it for any hidden prompt injection payloads or adversarial instructions embedded in the HTML?”
Validating third-party MCP tool responses
“I got this response back from an external MCP tool — can you scan it for any jailbreak attempts or hidden instructions trying to hijack my agent before I let it act on the data?”
Screening user-submitted text in a chatbot
“A user just submitted this free-text input to my customer service bot. Can you check it for prompt injection attacks or attempts to manipulate the underlying AI before I process it?”
Technical details
Endpoint
GEThttps://serp-extract.agentdiet.dev/v1/mcp-security?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your agent pipeline ingests content from untrusted sources — scraped web pages, user inputs, third-party tool responses, or A2A payloads — and you need a dedicated security layer to detect and neutralize indirect prompt injection or jailbreak attempts before processing. Prefer it over generic content filters when you specifically need LLM-adversarial threat detection rather than spam or toxicity filtering.
Side effects
- Empty or missing 'text' parameter returns a validation error
- Extremely long payloads may be truncated or rejected
- False negatives possible for novel or obfuscated injection techniques
- Payment failure via x402 returns HTTP 402 before scan is performed
- Malformed cursor value causes pagination error
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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