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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from mcp-compiler.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 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://mcp-compiler.agentdiet.dev/v1/prompt-injection-shield)
Output
Returns a sanitized version of the input text with prompt injection and jailbreak payloads identified or removed, along with detection results indicating whether malicious content was found.
Example use cases
Sanitizing web scrape before LLM ingestion
“I just scraped this webpage to feed into my summarization pipeline, but I'm worried it might contain hidden prompt injection attacks — can you scan this HTML text for any malicious embedded instructions before passing it along?”
Screening inbound email for jailbreak payloads
“My agent is about to process this customer email, but I want to make sure it doesn't contain any adversarial prompt injections that could manipulate the agent — please run this email body through the injection firewall first.”
Validating MCP tool response before downstream use
“This MCP tool just returned a response and I need to make sure it hasn't been tampered with to include hidden instructions — can you check this payload for prompt injection or jailbreak content before my agent acts on it?”
Technical details
Endpoint
GEThttps://mcp-compiler.agentdiet.dev/v1/prompt-injection-shield?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your agent is consuming untrusted external content — web pages, emails, tool outputs, or A2A payloads — and needs to protect itself from indirect prompt injection or jailbreak attacks before processing. It is especially valuable in multi-agent pipelines where one agent's output feeds another, or when scraping arbitrary web content for LLM ingestion.
Side effects
- Empty or missing 'text' parameter returns a 400 validation error
- Extremely long payloads may hit size limits or time out
- Subtle or novel injection techniques may evade detection
- Payment required (HTTP 402) if x402 payment header is absent or invalid
- Service unavailability returns 5xx errors
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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