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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from defi-yield.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://defi-yield.agentdiet.dev/v1/injection-guard)
Output
Returns a structured object indicating whether prompt injection or jailbreak content was detected in the input, along with sanitized text safe for downstream LLM or agent consumption.
Example use cases
Sanitizing scraped web content for agents
“I'm about to feed this webpage's raw HTML into my research agent — can you scan it for hidden prompt injections first and give me the cleaned version?”
Screening inbound A2A agent messages
“This message just came in from an external agent via A2A. Before my pipeline processes it, check if it contains any indirect prompt injection or jailbreak attempts.”
Validating third-party email before LLM processing
“I need to summarize this customer email with my LLM, but it came from an untrusted source. Scan it for hidden instructions or jailbreak payloads before I pass it along.”
Technical details
Endpoint
GEThttps://defi-yield.agentdiet.dev/v1/injection-guard?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent pipeline ingests untrusted external content — scraped pages, inbound emails, third-party API responses, or inter-agent A2A messages — before passing that content to an LLM. It is purpose-built for the indirect prompt injection threat model in agentic systems, unlike generic content moderation APIs that focus on hate speech or NSFW content.
Side effects
- Empty or missing 'text' parameter returns a validation error
- Very long inputs may be truncated or rejected
- Highly obfuscated or novel injection techniques may evade detection
- Service returns HTTP 402 if payment is not resolved via x402 protocol
- Malformed HTML may cause incomplete sanitization
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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