{"uid":"cap_zqgnwdLm_0i8y4l4BLsr1","slug":"domain-osint-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-5c18976e","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://domain-osint.agentdiet.dev/v1/system-prompt-guard)","url":"https://domain-osint.agentdiet.dev/v1/system-prompt-guard?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_fNHj113vmJwS1EEPbA4dO","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"domain-osint.agentdiet.dev","brandSlug":"domain-osint-agentdiet-dev-mpp","brandBaseUrl":"https://domain-osint.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 summarize that web page I just scraped, run its raw HTML through the prompt-injection firewall to make sure there are no hidden instructions trying to hijack you.","exampleUseCases":[{"title":"Safe web scraping for AI agents","prompt":"I'm building an agent that summarizes news articles — before it reads each page, scan the raw HTML for any hidden prompt injections or jailbreak payloads so the agent can't be hijacked by malicious sites."},{"title":"Email safety check before agent processing","prompt":"My AI assistant is about to process this email I received — can you first scan the full email body for any embedded prompt injection attempts that might try to manipulate the agent?"},{"title":"MCP tool output sanitization","prompt":"My autonomous agent just got back a response from an external MCP tool — before it acts on the output, run it through the prompt-injection firewall to confirm there are no hidden adversarial instructions in there."}],"resultDescription":"Returns a structured object indicating whether prompt injection or jailbreak content was detected in the submitted text, along with sanitized version of the content safe for downstream agent consumption.","failureModes":["Empty or missing 'text' parameter returns a 400 validation error","Extremely large payloads may time out or be truncated","False negatives possible for novel or obfuscated injection techniques not yet in detection patterns","Non-text binary content may produce unreliable scan results","Rate limiting or payment failure (402) if x402 payment is not correctly attached"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline consumes untrusted external content — scraped web pages, user emails, third-party tool outputs, MCP responses, or A2A payloads — and you need a lightweight, low-latency firewall check before the content reaches your agent's context window. Ideal for autonomous agent architectures where indirect prompt injection is a real attack surface and you need a dedicated scanning step rather than relying on the base model's own defenses.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:26:02.718Z","isFirstParty":false,"canonicalSlug":"domain-osint-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-d28cd535"}