{"uid":"cap_FncP8n4qdNPqh9i8_w7sh","slug":"shopify-spy-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-9c80a9be","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/llm-guard)","url":"https://shopify-spy.agentdiet.dev/v1/llm-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_3f5EsyJczOd0X3PUJU4TA","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 content.","exampleAgentPrompt":"Before you process that scraped webpage, run it through the prompt injection firewall first — I want to make sure there are no hidden instructions or jailbreak payloads embedded in the HTML before you act on it.","exampleUseCases":[{"title":"Sanitizing scraped web pages for agent pipelines","prompt":"I'm building an agent that browses websites to gather research. Before my agent processes any page content, scan this HTML for hidden prompt injections so it doesn't get hijacked by malicious instructions embedded in the page."},{"title":"Guarding against malicious email instructions","prompt":"I have an AI agent that reads and summarizes emails. Can you check this email body for any hidden jailbreak attempts or prompt injection tricks before the agent processes it?"},{"title":"Validating MCP tool responses before LLM consumption","prompt":"My agent just got back a response from an external MCP tool. Can you scan that payload for any injected instructions or jailbreak content before I feed it into my main LLM?"}],"resultDescription":"Returns an object containing the sanitized version of the input text with any detected prompt injection or jailbreak payloads removed or flagged, along with detection metadata indicating whether threats were found.","failureModes":["Empty or missing 'text' field returns a validation error","Extremely long payloads may time out or exceed size limits","Highly obfuscated or novel injection techniques may evade detection","Payment failure via x402 returns a 402 status before scanning occurs","Malformed JSON body returns a 400 bad request error"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline ingests content from untrusted external sources — scraped web pages, emails, third-party tool responses, MCP payloads, or A2A messages — and you need to detect and strip hidden prompt injections or jailbreak instructions before they reach your LLM. Prefer this over general content moderation services when the threat model is specifically indirect prompt injection and adversarial instruction hijacking in agentic workflows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-28T00:33:32.150Z","isFirstParty":false,"canonicalSlug":"shopify-spy-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-2787c422"}