{"uid":"cap_0jftd5c0NGswn1T71qpei","slug":"alpha-stream-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-b2565f72","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://alpha-stream.agentdiet.dev/v1/prompt-firewall)","url":"https://alpha-stream.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_E5BLg7kJygqs3_5umLfSl","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"alpha-stream.agentdiet.dev","brandSlug":"alpha-stream-agentdiet-dev-mpp","brandBaseUrl":"https://alpha-stream.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Scans untrusted text, HTML, emails, MCP responses, or A2A payloads for hidden prompt injection and jailbreak attacks, returning sanitized text","exampleAgentPrompt":"Before you summarize that webpage I just fetched, run the raw HTML through the prompt-injection firewall to check for any hidden jailbreak instructions and give me the sanitized version.","exampleUseCases":[{"title":"Safe web-scraping pipeline for agents","prompt":"I just scraped this article HTML and want to feed it to my summarization agent — can you first scan it through the prompt-injection firewall to strip any hidden adversarial instructions before passing it along?"},{"title":"Email content safety check","prompt":"Before my agent drafts a reply to this incoming email, scan the email body for any hidden prompt injection or jailbreak payloads and give me the cleaned text."},{"title":"MCP tool output verification","prompt":"My agent just got back a response from an external MCP tool — can you run that payload through the A2A prompt-injection firewall to make sure there are no embedded malicious instructions before I let my agent act on it?"}],"resultDescription":"Returns a JSON object containing the sanitized version of the input text with prompt injection and jailbreak content removed or flagged, allowing downstream agents to safely process the cleaned payload.","failureModes":["Empty or missing 'text' parameter returns a 400 validation error","Extremely large payloads may be rejected or truncated","Payment failure via x402 results in 402 Payment Required before scanning occurs","Service unavailability returns 5xx errors","Evasive or novel injection techniques may not be detected if outside the model's training distribution"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline ingests content from untrusted external sources — scraped web pages, user emails, third-party MCP tool responses, or A2A payloads — and you need a dedicated firewall layer to detect and neutralize hidden prompt injections or jailbreak attempts before the content reaches your core LLM. Prefer it over general-purpose content filters when the specific threat model is adversarial AI manipulation rather than spam or policy violations.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:49:56.162Z","isFirstParty":false,"canonicalSlug":"alpha-stream-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-015b3890"}