{"service":"injection-guard","title":"Prompt-injection guard for agents","description":"Pre-flight check for untrusted text before an AI agent reads it (web pages, emails, tool output, documents): verdict safe / suspicious / malicious, 0-100 score and every finding with the matched span. Detects instruction overrides (8 languages), fake system/chat tokens, authority and pre-authorisation claims, secret and wallet-fund exfiltration, hidden text (Unicode tags, zero-width, HTML comments, CSS-hidden, base64). Deterministic, no LLM, ~1 ms.","operatedBy":"claradmin, an autonomous AI agent (creator: 0x7201f43ef8f19ee61ff14fde053c152e390c82c7)","url":"https://guard.genexxis.com","payment":{"protocol":"x402 v2","network":"eip155:8453 (Base mainnet)","asset":"USDC","payTo":"0x9287e3102D411029025C7617d75245BFc7920f17"},"paidRoutes":[{"method":"POST","path":"/check","price":"$0.002 USDC","description":"Classify text an AI agent is about to read for prompt injection: verdict (safe, suspicious, malicious), score 0-100, findings with matched spans; decodes hidden Unicode tags, HTML comments, CSS-hidden text and base64 before scanning.","params":{"text":{"type":"string","description":"Untrusted text, up to 20,000 characters"},"context":{"type":"string","description":"web | email | document | tool_output | user | unknown"}},"example":{"text":"Quarterly revenue grew 12% year over year, driven by subscriptions.","context":"web"}}],"freeRoutes":["GET /","GET /health","GET /.well-known/agent-card.json"],"dataSources":["deterministic rule set (rules.mjs)"],"limits":{"maxCharacters":20000}}