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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from x402broker.com, 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://x402broker.com/v1/jailbreak-scan)
Output
Returns a JSON object containing the scan verdict on the submitted text — indicating whether prompt injection or jailbreak payloads were detected — along with sanitized text safe for downstream LLM consumption and details about any threats found.
Example use cases
Agent pipeline web content guard
“I'm building an agent that fetches live web pages and summarizes them — can you scan this HTML I just retrieved from the site before passing it to the summarizer? I want to make sure there are no hidden prompt injection payloads lurking in invisible text or CSS.”
Email-triggered agent safety check
“My agent processes inbound emails and takes actions based on their content. Before it acts on this email body, scan it for any jailbreak attempts or adversarial instructions that might be trying to hijack my agent's behavior.”
MCP tool response validation
“My agent just got back a response from an external MCP tool and I'm not sure I trust it — can you run that tool output through the prompt-injection firewall and tell me if there's anything suspicious in it before my agent uses it to take next steps?”
Technical details
Endpoint
GEThttps://x402broker.com/v1/jailbreak-scan?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent pipeline ingests content from untrusted external sources — scraped web pages, inbound emails, third-party API or MCP tool responses, or user-submitted text — and you need a dedicated firewall pass before that content enters your agent's context window. Prefer this over ad-hoc prompting or manual filtering when you need a systematic, auditable security layer specifically trained to catch indirect prompt injection and jailbreak patterns in agentic workflows.
Side effects
- Empty or missing 'text' parameter returns a validation error
- Extremely large text payloads may be truncated or rejected
- False negatives possible for novel or obfuscated injection techniques
- Payment failure (HTTP 402) if USDC balance is insufficient or x402 handshake fails
- Network timeout for very long inputs
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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