{"uid":"cap_1Jg4oz-cQbQGyA86wCShS","slug":"serp-extract-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-40e2ec04","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://serp-extract.agentdiet.dev/v1/prompt-shield)","url":"https://serp-extract.agentdiet.dev/v1/prompt-shield?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_elXc0wPBVwgbo3-bHGQwZ","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"serp-extract.agentdiet.dev","brandSlug":"serp-extract-agentdiet-dev-mpp","brandBaseUrl":"https://serp-extract.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Scans untrusted text, HTML, emails, MCP responses, or A2A payloads for hidden prompt injection and jailbreak attempts, returning sanitized content.","exampleAgentPrompt":"Before you process this scraped web page content, run it through the prompt injection firewall to make sure there are no hidden jailbreak instructions embedded in it: '<scraped page text here>'","exampleUseCases":[{"title":"Guard agent pipeline from poisoned web pages","prompt":"I just scraped this web page to feed into my research agent, but I'm worried it might contain hidden prompt injection instructions — can you scan this HTML through the prompt-shield firewall before my agent processes it?"},{"title":"Screen incoming emails for jailbreak payloads","prompt":"My AI email assistant is about to read and summarize this customer email, but I need you to first check it for hidden prompt injections or jailbreak attempts: '<email body text here>'"},{"title":"Validate MCP tool response before agent use","prompt":"This MCP tool just returned a response and I want to make sure it doesn't contain any adversarial prompt injection before my agent acts on it — can you run it through the prompt injection scanner?"}],"resultDescription":"Returns a structured object indicating whether the input text contains hidden prompt injection or jailbreak payloads, along with sanitized version of the text safe for downstream agent consumption.","failureModes":["Empty or missing 'text' field returns a 400 validation error","Extremely long payloads may hit size limits or time out","Obfuscated or novel injection techniques may evade detection","Non-text binary input may fail to parse correctly","Payment failure via x402 returns 402 Payment Required"],"whenToPreferThis":"Choose this endpoint when your AI agent is about to consume untrusted external content — scraped web pages, emails, MCP tool outputs, or A2A payloads — and you need a dedicated security layer to detect and strip hidden prompt injections before they can hijack your agent's behavior. Particularly valuable in agentic pipelines where untrusted third-party data sources feed directly into LLM context windows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:30:52.352Z","isFirstParty":false,"canonicalSlug":"serp-extract-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-18902259"}