{"uid":"cap_FDp8Ont5g34iaoj0bXKQo","slug":"x402broker-injection-guard-a2a-prompt-injection-jailbreak-firewall-235fec6b","name":"x402broker Injection Guard — A2A 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://x402broker.com/v1/injection-guard)","url":"https://x402broker.com/v1/injection-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":["x402"],"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":"unknown","protocol":"x402","network":"base","amountUsd":null,"per":"call","confidence":"unknown"},{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_bLJAarDmJ3n1BMz8HyaI6","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null},{"uid":"pm_igxw8_Uoi529sWwD1lkkw","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Scans untrusted text (web pages, emails, MCP responses, A2A payloads) for hidden prompt injections and jailbreak attempts, returning sanitized output safe for agent consumption.","exampleAgentPrompt":"Before you process that webpage I just fetched, run it through the injection-guard firewall to check for any hidden prompt injections or jailbreak instructions and give me back the sanitized version.","exampleUseCases":[{"title":"Sanitize scraped web content for agent pipeline","prompt":"I'm about to feed this scraped HTML from an external site into my research agent — can you scan it for any hidden prompt injection attacks first and return the clean text?"},{"title":"Screen incoming emails for jailbreak payloads","prompt":"Check this email body for any embedded jailbreak instructions or indirect prompt injections before my email-processing agent acts on it."},{"title":"Validate MCP tool response before agent use","prompt":"My agent just got a response back from a third-party MCP tool — can you run it through the injection guard to make sure there are no adversarial instructions hidden in there before we continue?"}],"resultDescription":"Returns sanitized text stripped of detected prompt injection attempts and jailbreak payloads, along with a threat assessment indicating whether malicious content was found and what was removed.","failureModes":["Empty or missing 'text' query parameter returns an error","Extremely large payloads may be truncated or rejected","Obfuscated or encoded injections may evade detection","Non-text binary content cannot be scanned","Service may return false positives on legitimate instructional content that resembles injection syntax"],"whenToPreferThis":"Choose this endpoint when your AI agent needs to safely consume untrusted external content — web scrapes, third-party API responses, emails, or A2A payloads — before acting on them. It is specifically designed for the agent-security use case of indirect prompt injection defense, making it preferable to generic content filters when protecting LLM pipelines from adversarial manipulation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:38:27.745Z","isFirstParty":false,"canonicalSlug":"x402broker-injection-guard-a2a-prompt-injection-jailbreak-firewall-235fec6b"}