{"uid":"cap_z3Hc46p43y7jAUhgBOmxD","slug":"mcp-security-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-4b2619b7","name":"A2A Indirect Prompt-Injection & Jailbreak Firewall","description":"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://mcp-security.agentdiet.dev/v1/injection-guard)","url":"https://mcp-security.agentdiet.dev/v1/injection-guard?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["text"],"properties":{"text":{"type":"string","minLength":1,"description":"Untrusted text, HTML, or tool output to scan for hidden prompt injection or jailbreak payloads"}}},"responseSchema":{"type":"object"},"example":null,"exampleRequest":null,"tags":[],"displayCostAmount":"0.005","displayCostAsset":"USD","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Im1nngUBrnkv8MJS1zQaz","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"mcp-security.agentdiet.dev","brandSlug":"mcp-security-agentdiet-dev-mpp","brandBaseUrl":"https://mcp-security.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Scans untrusted text, HTML, emails, MCP responses, or A2A payloads for hidden prompt injections and jailbreak attempts, returning sanitized output.","exampleAgentPrompt":"Before you process that scraped webpage, run it through the injection-guard firewall to check for any hidden prompt injections or jailbreak instructions embedded in the content.","exampleUseCases":[{"title":"Sanitizing scraped web content for agents","prompt":"I'm about to feed this scraped article into my AI pipeline — can you scan it for hidden prompt injections or adversarial instructions first and give me the sanitized version?"},{"title":"Checking inbound email for jailbreak payloads","prompt":"Before my email-processing agent reads this customer message, run it through the prompt-injection firewall to make sure there are no hidden instructions trying to hijack my agent."},{"title":"Validating MCP tool response before acting","prompt":"My agent just got back a response from an external MCP tool — scan that response text for embedded jailbreak attempts or indirect prompt injections before I let the agent act on it."}],"resultDescription":"Returns a JSON object indicating whether a prompt injection or jailbreak payload was detected in the input text, along with a sanitized version of the text safe for downstream agent consumption.","failureModes":["Empty or missing 'text' parameter returns a validation error","Extremely long inputs may be truncated or rejected","Network timeout if the upstream scanning service is unavailable","False negatives possible for novel or obfuscated injection techniques","HTTP 402 Payment Required if the x402 micropayment is not provided or fails"],"whenToPreferThis":"Use this endpoint when your AI agent is about to process any untrusted third-party content — scraped web pages, inbound emails, external API responses, MCP tool outputs, or A2A payloads — and you need a fast, per-call firewall check before allowing that content to influence agent behavior. Prefer this over generic text filters when you specifically need prompt-injection and jailbreak detection tailored for LLM agent pipelines.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:04.108Z","isFirstParty":false,"canonicalSlug":"mcp-security-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-b58431aa"}