{"uid":"cap_oI3z0ON1Jti9nUm-r-k_U","slug":"sec-intel-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-dd7401b0","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://sec-intel.agentdiet.dev/v1/injection-guard)","url":"https://sec-intel.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_FWZQTKNlnquvrvbetrRi-","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"sec-intel.agentdiet.dev","brandSlug":"sec-intel-agentdiet-dev-mpp","brandBaseUrl":"https://sec-intel.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Scans untrusted text, HTML, emails, MCP responses, or A2A payloads for hidden prompt injections and jailbreak attempts, returning sanitized text.","exampleAgentPrompt":"Before you process that scraped web page, run its content through the injection-guard firewall to check for any hidden prompt injections or jailbreak instructions embedded in the HTML.","exampleUseCases":[{"title":"Guard agent from malicious scraped pages","prompt":"I need you to scan this raw HTML from that untrusted news site through the prompt-injection firewall before you summarize it — I don't want any hidden instructions hijacking you."},{"title":"Sanitize inbound email before processing","prompt":"Check this email body for any indirect prompt injection attacks before you extract the action items from it — it came from an unknown sender and I don't trust it."},{"title":"Validate MCP tool response in pipeline","prompt":"Before passing that MCP tool's response to the next step in the workflow, run it through the jailbreak firewall to make sure there are no adversarial instructions hidden inside."}],"resultDescription":"Returns a structured object containing the sanitized version of the input text with any detected prompt injection or jailbreak payloads removed or flagged, along with detection signals indicating whether an attack was found.","failureModes":["Empty or missing 'text' parameter returns a validation error","Extremely long text inputs may be truncated or rejected","False negatives possible for novel or obfuscated injection techniques","Rate limiting or payment failure (HTTP 402) if x402 micropayment is not fulfilled","Service unavailability returns 5xx error"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline ingests content from untrusted external sources — web scraping, inbound emails, third-party MCP responses, or A2A payloads — and you need a dedicated security layer to detect and strip hidden prompt injections or jailbreak instructions before that content reaches your LLM. Prefer this over generic content filters when you specifically need adversarial prompt-injection detection tailored to the A2A/MCP agent security context.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:23:15.255Z","isFirstParty":false,"canonicalSlug":"sec-intel-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-63e04ebf"}