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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from token-intel.agentdiet.dev, paid per call via MPP, $0.005/call, status unknown (last checked 2026-10-21).
Scans untrusted text, web pages, 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://token-intel.agentdiet.dev/v1/indirect-injection-guard)
Output
Returns a JSON object containing the scan result for the submitted text, including whether prompt injection or jailbreak payloads were detected and a sanitized version of the input text safe for downstream agent consumption.
Example use cases
Protecting agent from malicious web scrape
“I just scraped this webpage to feed into my research agent, but I'm worried it might contain hidden prompt injection instructions. Can you run it through the injection firewall and give me the sanitized text before I pass it along?”
Screening inbound email for jailbreak attempts
“My AI assistant reads and summarizes customer emails, but I'm nervous about adversarial inputs. Can you scan this email body for any jailbreak or prompt injection payloads before my agent sees it?”
Validating MCP tool response safety
“My agent just got back a response from an external MCP tool and I want to make sure it's not trying to hijack my agent with hidden instructions. Can you check this tool output for indirect prompt injections and return the safe version?”
Technical details
Endpoint
GEThttps://token-intel.agentdiet.dev/v1/indirect-injection-guard?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent pipeline consumes untrusted external content — web pages, emails, MCP tool responses, A2A payloads, or user-submitted text — and you need a dedicated security layer to detect and neutralize indirect prompt injection and jailbreak attempts before they reach your LLM. Prefer this over generic content filters when the specific threat model is adversarial prompt manipulation targeting AI agents.
Side effects
- Empty or missing 'text' parameter returns a 400 validation error
- Very large payloads may exceed size limits or increase latency
- Payment failure (HTTP 402) if x402 micropayment is not properly handled
- False negatives on novel or obfuscated injection techniques
- False positives flagging legitimate instructional text as injections
- Non-English or heavily encoded injection patterns may reduce detection accuracy
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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