{"uid":"cap_RbNnxLklz0v3bLSQxv37O","slug":"email-verify-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-97d6cc0a","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://email-verify.agentdiet.dev/v1/prompt-firewall)","url":"https://email-verify.agentdiet.dev/v1/prompt-firewall?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_hKYtsYJETN8XdqIwlKU4s","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"email-verify.agentdiet.dev","brandSlug":"email-verify-agentdiet-dev-mpp","brandBaseUrl":"https://email-verify.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 that scraped web page content, run it through the prompt injection firewall to check for any hidden jailbreak instructions or embedded prompt manipulation — here's the raw HTML text to scan.","exampleUseCases":[{"title":"Sanitizing scraped web content for agents","prompt":"I'm about to feed this webpage's text into my AI pipeline — can you scan it for hidden prompt injections or jailbreak payloads first and give me the sanitized version?"},{"title":"Checking third-party API responses","prompt":"My agent just got a response from an external MCP tool and I want to make sure it doesn't contain any sneaky embedded instructions — can you run it through the prompt firewall before I process it?"},{"title":"Filtering user-submitted email content","prompt":"A user forwarded me this email and I need to pass its content to my AI assistant, but I'm worried it might have hidden prompt injection text — please scan it and return the cleaned version."}],"resultDescription":"Returns a JSON object containing the scan result for the submitted text, including detection of any hidden prompt injection payloads or jailbreak attempts and a sanitized version of the input text safe for further LLM processing.","failureModes":["Missing or empty 'text' parameter returns a 400 validation error","Extremely long text inputs may be truncated or time out","Novel or obfuscated injection patterns may evade detection","Non-text binary content may not be parsed correctly","Payment not completed (x402) results in 402 Payment Required response"],"whenToPreferThis":"Choose this endpoint when your AI agent needs to process content from untrusted external sources — scraped web pages, forwarded emails, third-party API or MCP tool responses, or A2A payloads — before passing them to an LLM. It is specifically designed for the indirect prompt injection threat vector where malicious instructions are hidden inside external content rather than typed directly by a user. Prefer this over generic content filters when the threat model is LLM manipulation rather than spam or NSFW content.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:40:41.980Z","isFirstParty":false,"canonicalSlug":"email-verify-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-dd577fbf"}