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PayAI Prompt Security Inspector
x402
PayAI Prompt Security Inspector is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Performs a static security scan of a text or prompt blob, detecting hidden unicode, prompt injection, data-exfiltration directives, dangerous-capability language, tool-shadowing, and obfuscation, returning a 0–100 risk score with category and findings.
Price / call$0.003
Success—
StatusUnknown
How this service works
Static security scan of a single text or prompt blob: hidden unicode, prompt injection, data-exfiltration directives, dangerous-capability and tool-shadowing language, and obfuscation. Returns a 0-100 risk score, category and findings. Security indicators, not a guarantee.
Output
A JSON object containing a numeric risk score from 0 to 100, a risk category label (e.g. low/medium/high), and a list of specific findings describing which security issues were detected — such as hidden unicode characters, prompt injection patterns, data-exfiltration directives, tool-shadowing language, or obfuscation techniques. Results are security indicators, not a definitive guarantee.
Example use cases
Vetting third-party tool specs before loading
“Before I add this new MCP tool to our agent stack, scan its description for prompt injection, tool-shadowing language, or anything trying to hijack the agent — give me the risk score and findings.”
Screening user-submitted prompts at runtime
“A user just submitted this custom instruction to our AI assistant platform — can you check it for hidden unicode, data-exfiltration directives, or injection attempts and tell me the risk category?”
Auditing an LLM system prompt for obfuscation
“I got this system prompt from a vendor claiming it's safe. Can you do a static security scan on it and flag any dangerous-capability language, obfuscation tricks, or prompt injection patterns, along with a 0–100 risk score?”
Technical details
Endpoint
POSThttps://payai.agentstools.dev/mcp/inspectWhen to prefer
Choose this endpoint when you need a fast, automated static security screen of LLM-facing text — such as third-party tool descriptions, user-submitted prompts, or system prompts — before executing them. It is especially valuable for AI agent pipelines that dynamically load tools or accept external instructions, where prompt injection, tool-shadowing, or data-exfiltration risks are a concern. Prefer it over manual review when you need a quantified risk score and structured findings at low cost per call.
Side effects
- Missing required 'text' field returns a validation error
- Empty or very short text may produce low-confidence findings
- Highly novel obfuscation techniques may be missed (not a guarantee)
- Extremely large text blobs may exceed input limits
- Non-text binary content will not be meaningfully analyzed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| kind | string | What the blob is (affects labelling only) |
| text | string | The text/prompt/tool description to inspect |
Tags
x402
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