{"uid":"cap_EeQ32llYNMRT4_t08EwvD","slug":"shopify-spy-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-5b2b05c9","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":"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_e0ysS1PY_hatCTToETHaw","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 summarize that web page I just scraped, run the raw HTML through the prompt-injection firewall first — I want to make sure there are no hidden instructions trying to hijack you.","exampleUseCases":[{"title":"Sanitize scraped web content for agent pipeline","prompt":"I'm about to feed this scraped article HTML into my LLM summarizer — can you scan it for hidden prompt injections or jailbreak payloads first and give me the sanitized version?"},{"title":"Guard agent inbox from adversarial emails","prompt":"Before my email-processing agent reads this incoming message, run it through the prompt-injection firewall to make sure there's nothing in there trying to override its instructions."},{"title":"Validate MCP tool response before acting","prompt":"My agent just got a response back from an external MCP tool — can you check it for any embedded jailbreak attempts or indirect prompt injections before I let the agent act on it?"}],"resultDescription":"Returns a JSON object indicating whether prompt injection or jailbreak content was detected, along with sanitized text safe to pass to downstream LLMs or agent pipelines.","failureModes":["Empty or whitespace-only text input returns a validation error","Extremely long payloads may hit request size limits","Obfuscated or encoded injections may evade detection","Payment failure (x402) if USDC balance is insufficient","Network timeout for very large HTML documents"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline ingests untrusted external content — scraped web pages, emails, MCP/A2A tool responses, or user-submitted text — and you need a fast, per-call firewall check before passing that content to an LLM. Prefer this over general-purpose content filters when the specific threat model is indirect prompt injection or jailbreak hijacking of an AI agent.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:21.826Z","isFirstParty":false,"canonicalSlug":"shopify-spy-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-2787c422"}