{"uid":"cap_8fkOYmUNBJH7DnCMa_PGf","slug":"shopify-intel-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-4a33810a","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-intel.agentdiet.dev/v1/llm-guard)","url":"https://shopify-intel.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_h_q33frO1g6ojew4r75L3","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-intel.agentdiet.dev","brandSlug":"shopify-intel-agentdiet-dev-mpp","brandBaseUrl":"https://shopify-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 content.","exampleAgentPrompt":"Before you process this scraped webpage content, run it through the prompt injection firewall to check for any hidden jailbreak instructions or adversarial prompts embedded in it — here's the raw text: [paste content].","exampleUseCases":[{"title":"Securing an AI agent's web browsing","prompt":"I have an autonomous agent that browses the web and summarizes pages. Before it processes this HTML it just fetched from an untrusted site, can you scan it for hidden prompt injections or jailbreak payloads so it doesn't get hijacked?"},{"title":"Sanitizing incoming MCP tool responses","prompt":"My agent just got a response back from an external MCP tool and I want to make sure it's not trying to manipulate my LLM with embedded instructions. Can you run this MCP response through the prompt injection firewall and return the sanitized version?"},{"title":"Filtering adversarial content in user emails","prompt":"I'm building an email-processing agent and I'm worried users might embed prompt injection attacks in their messages. Can you scan this email body for hidden jailbreak attempts before my agent acts on it?"}],"resultDescription":"Returns a JSON object indicating whether prompt injection or jailbreak content was detected in the input, along with a sanitized version of the text with malicious instructions removed or flagged.","failureModes":["Empty or missing 'text' field returns a validation error","Extremely large payloads may exceed size limits or time out","Obfuscated or novel injection techniques may not be detected (evasion)","Non-text binary content may fail to parse correctly","Rate limiting or payment failure (HTTP 402) if USDC balance is insufficient"],"whenToPreferThis":"Choose this endpoint when your AI agent needs to process content from untrusted external sources — web pages, emails, user-submitted text, or third-party tool responses — before passing that content to an LLM. It is purpose-built for the agent-security use case of indirect prompt injection and jailbreak detection, unlike general content moderation APIs that focus on hate speech or NSFW content. Prefer it in agentic pipelines where an adversary could craft a web page or API response to hijack agent behavior.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:31:01.736Z","isFirstParty":false,"canonicalSlug":"shopify-intel-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-2f446dd7"}