{"uid":"cap_HwwUkRCZLlDo4i-e9yqUw","slug":"shopify-spy-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-82e21ccf","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://shopify-spy.agentdiet.dev/v1/guard)","url":"https://shopify-spy.agentdiet.dev/v1/guard?utm_source=zero.xyz","method":"POST","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_mkD9cDuL0lVUjIzzAUvQg","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"shopify-spy.agentdiet.dev","brandSlug":"shopify-spy-agentdiet-dev-mpp","brandBaseUrl":"https://shopify-spy.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 this scraped product page, run it through the prompt-injection firewall to make sure there are no hidden jailbreak instructions embedded in the HTML: [paste content here].","exampleUseCases":[{"title":"Guard agent pipeline from poisoned web pages","prompt":"I'm about to feed this scraped webpage into my agent — can you run it through the prompt-injection firewall first to strip out any hidden instructions or jailbreak payloads before my LLM sees it?"},{"title":"Screen inbound emails for injection attacks","prompt":"This email came in from an unknown sender and my agent is about to summarize it — please scan the full email body for any indirect prompt injections or jailbreak attempts and give me the sanitized version."},{"title":"Validate MCP tool output before agent acts","prompt":"My agent just got a response back from an external MCP tool — before it acts on the result, can you check that response text for hidden prompt-injection payloads and return a clean version?"}],"resultDescription":"Returns a JSON object containing the sanitized version of the input text with any detected prompt injection or jailbreak content removed or flagged, along with detection metadata indicating whether threats were found.","failureModes":["Empty or missing 'text' field returns a 400 validation error","Extremely long payloads may hit size limits or time out","Ambiguous or benign-looking injections may not be detected with 100% accuracy","Payment failure (402) if x402 micropayment is not properly attached","Malformed HTML that the scanner cannot parse may return partial results"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline consumes untrusted external content — scraped web pages, emails, third-party API responses, MCP tool outputs, or A2A messages — and you need a dedicated firewall step to neutralize hidden prompt injections before the content reaches your LLM. Prefer it over generic content filtering when the threat model is specifically adversarial prompt injection or jailbreak payloads embedded in otherwise legitimate-looking text.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:36:35.768Z","isFirstParty":false,"canonicalSlug":"shopify-spy-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-2787c422"}