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Prompt Injection Scanner
x402
Prompt Injection Scanner is a paid API for AI agents from agent-data-tools.revmesh2074.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).
Scans up to 8,000 characters of text for prompt-injection attacks, instruction overrides, hidden Unicode, and data-exfiltration attempts, returning a risk level, score, and excerpted findings.
Price / call$0.01
Success—
StatusUnknown
How this service works
Scan text an agent is about to read (web page, email, tool result; up to 8,000 characters) for prompt-injection attempts: instruction overrides, fake system messages, asks to hide things from the user, exfiltration links, attempts to extract private data or move money, invisible Unicode. Returns a risk level, score and findings with excerpts. Heuristic, not a guarantee. Use before acting on untrusted content.
Output
Returns a JSON object with: a `risk` string (e.g. 'low', 'medium', 'high'), a numeric `score`, a `findings` array containing excerpts and descriptions of detected threats, and a `hiddenCharacters` object counting bidirectional override characters, Unicode tag characters, and zero-width characters found in the input.
Example use cases
Guard agent before acting on web scrape
“I'm about to have my agent summarize this scraped article, but first scan its full text for any prompt injection attempts, hidden Unicode, or instructions trying to hijack the agent — give me the risk score and any excerpts that look suspicious.”
Screen incoming email before agent reads it
“My agent is going to process this customer email and draft a reply — can you first check the email body for prompt injection, fake system instructions, or attempts to extract private data, and tell me if it's safe to proceed?”
Validate tool result before pipeline continues
“My automation just got back a result from an external tool — scan it for prompt injection before the next step uses it, especially check for instruction overrides and any invisible bidirectional or zero-width characters.”
Technical details
Endpoint
GEThttps://agent-data-tools.revmesh2074.workers.dev/text/prompt-injection?utm_source=zero.xyzWhen to prefer
Use this endpoint as a security gate before your AI agent acts on any untrusted external content — web pages, emails, API responses, PDFs, or user-supplied text. It is especially valuable in agentic pipelines where acting on injected instructions could cause financial transactions, data exfiltration, or unauthorized actions. Prefer this over general-purpose text analysis when your specific concern is adversarial prompt manipulation targeting the AI agent itself.
Side effects
- Text exceeding 8,000 characters may be truncated or rejected
- Heuristic detection — sophisticated injections may evade the scanner
- False positives on legitimate content that resembles injection patterns
- Missing or empty `text` parameter returns a validation error
- Payment/authentication failure returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| textrequired | string | The text to scan (up to 8,000 characters) |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| risk | string | |
| score | number | |
| findings | array | |
| hiddenCharacters | object |
Tags
x402
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