{"uid":"cap_pOOSKhxKqyrOSynhWl8sC","slug":"preflight-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-ffb93d0d","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://preflight.agentdiet.dev/v1/prompt-injection-shield)","url":"https://preflight.agentdiet.dev/v1/prompt-injection-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_R6TtftrKMQkbTn0j1F_OO","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"preflight.agentdiet.dev","brandSlug":"preflight-agentdiet-dev-mpp","brandBaseUrl":"https://preflight.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 the content from that scraped web page, run it through the prompt-injection firewall to check for any hidden adversarial instructions or jailbreak payloads embedded in the HTML.","exampleUseCases":[{"title":"Sanitizing scraped web content for agents","prompt":"I'm about to feed this scraped article into my agent pipeline — can you run it through the prompt-injection firewall first to strip out any hidden adversarial instructions before the LLM sees it?"},{"title":"Filtering untrusted email before processing","prompt":"Before my agent parses this inbound email from an unknown sender, scan it for embedded jailbreak attempts or indirect prompt injections that could hijack its behavior."},{"title":"Validating MCP tool response before acting","prompt":"My agent just got a response back from an external MCP tool — can you check that payload for hidden prompt injections before the agent decides what action to take next?"}],"resultDescription":"Returns a JSON object indicating whether a prompt injection or jailbreak payload was detected in the input text, along with sanitized text with adversarial instructions removed or flagged, enabling safe downstream processing by AI agents.","failureModes":["Empty or missing 'text' field returns a 400 validation error","Extremely long inputs may exceed processing limits or increase latency","Novel or highly obfuscated injection techniques may evade detection","Non-text binary content may not be parseable","Rate limits or payment failures (HTTP 402) if USDC balance is insufficient"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline ingests content from untrusted external sources — scraped web pages, emails, MCP tool responses, or A2A payloads — and you need a dedicated security layer to detect and neutralize hidden prompt injection or jailbreak attempts before they can manipulate your agent's behavior. Prefer this over generic content filters when you specifically need adversarial LLM instruction detection rather than general content moderation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:36:42.138Z","isFirstParty":false,"canonicalSlug":"preflight-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-5b5b7e27"}