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A2A Indirect Prompt-Injection & Jailbreak Firewall
A2A Indirect Prompt-Injection & Jailbreak Firewall is a paid API for AI agents from whale-momentum.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://whale-momentum.agentdiet.dev/v1/tool-poisoning-shield)
Output
Returns a JSON object containing the scanned result, likely including a sanitized version of the input text, detection flags indicating whether prompt injection or jailbreak content was found, and potentially threat classification details.
Example use cases
Sanitizing scraped web content before agent use
“I just scraped this article to feed into my agent pipeline — can you scan it for any hidden prompt injections or adversarial instructions embedded in the HTML before we process it?”
Screening incoming emails for injection attacks
“Before my agent reads and summarizes this inbound email, run it through the prompt-injection firewall to check whether it contains any hidden jailbreak payloads or embedded instructions trying to hijack the agent.”
Validating MCP tool responses in an agentic workflow
“My agent just got back a response from an external MCP tool — scan that response text for any indirect prompt injection attempts or poisoned instructions before I let the agent act on it.”
Technical details
Endpoint
GEThttps://whale-momentum.agentdiet.dev/v1/tool-poisoning-shield?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent is consuming content from untrusted external sources — scraped web pages, external emails, third-party MCP/A2A tool responses — and you need a dedicated security layer to detect and neutralize hidden prompt injection or jailbreak payloads before they influence your agent's behavior. It is especially valuable in multi-agent pipelines where one agent's output feeds into another, creating indirect injection risk.
Side effects
- Empty or missing 'text' parameter returns a validation error
- Extremely large payloads may exceed size limits or timeout
- False negatives: sophisticated obfuscated injections may not be detected
- False positives: legitimate content resembling injection patterns may be flagged
- Payment failure (HTTP 402) if x402 micropayment is not fulfilled
- Service unavailability returns 5xx 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 |
Output
Schema · Response
{
"type": "object"
}Reviews
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