{"uid":"cap_CBKJ1wWJPWypXZ5JoFCaV","slug":"shopify-spy-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-15289e2c","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/prompt-guard)","url":"https://shopify-spy.agentdiet.dev/v1/prompt-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__XQUUpFBODe09DMsqf75e","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 HTML page I scraped, can you run it through the prompt-injection firewall to check for any hidden jailbreak or indirect prompt injection payloads and give me the sanitized version?","exampleUseCases":[{"title":"Sanitize scraped webpage before processing","prompt":"I just scraped this e-commerce product page and I want to feed its content to my analysis agent — but first, scan it for any hidden prompt injection instructions embedded in the HTML and return the clean version."},{"title":"Screen inbound email for embedded instructions","prompt":"Can you check this email body for hidden prompt injection or jailbreak payloads before my agent reads it? I don't trust the sender and want to make sure there are no embedded override instructions."},{"title":"Validate MCP tool response before agent consumption","prompt":"My agent just got back a response from an external MCP tool — please scan it for any indirect prompt injection attempts or hidden instructions before I pass it along to the next step in the pipeline."}],"resultDescription":"Returns a sanitized version of the input text with hidden prompt injection and jailbreak payloads detected and removed or flagged, along with detection metadata indicating whether any malicious content was found.","failureModes":["Empty or whitespace-only text input returns a validation error","Extremely large payloads may exceed processing limits or time out","Obfuscated or novel injection techniques may evade detection","Payment required (HTTP 402) if x402 micropayment header is missing or invalid","Non-UTF-8 encoded content may cause parsing errors"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline ingests text from untrusted external sources — scraped web pages, user-submitted content, third-party API responses, emails, or MCP/A2A messages — and you need to sanitize them before passing to an LLM. It is specifically designed for A2A and agent-to-agent security contexts, making it more targeted than a generic content moderation API.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:33:13.699Z","isFirstParty":false,"canonicalSlug":"shopify-spy-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-2787c422"}