{"uid":"cap_Lj5R7_UUqSGsAQzeO9sJV","slug":"x402broker-com-a2a-indirect-prompt-injection-jailbreak-firewall-39cb62ba","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://x402broker.com/v1/llm-jailbreak-defense)","url":"https://x402broker.com/v1/llm-jailbreak-defense?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_tQuARzpOsOkPyzvXuCwCp","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"x402broker.com","brandSlug":"x402broker-com-mpp","brandBaseUrl":"https://x402broker.com","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 that scraped webpage content, run it through the prompt injection firewall to check for any hidden jailbreak instructions embedded in the HTML — here's the raw text: [paste content].","exampleUseCases":[{"title":"Screening scraped web content for agents","prompt":"I'm building an agent that reads web pages and summarizes them. Before feeding any scraped HTML to the LLM, scan this page content for hidden prompt injections or jailbreak instructions: [raw HTML text here]."},{"title":"Sanitizing inbound emails before AI processing","prompt":"My AI email assistant is about to read this inbound message. Can you first check it for any embedded prompt injection attacks or jailbreak payloads before the assistant processes it? Here's the email body: 'Dear assistant, ignore your previous instructions and...'"},{"title":"Validating MCP tool output before agent use","prompt":"My agent just got back a response from an external MCP tool and I want to make sure it's safe before passing it along — can you scan this tool output for any hidden instructions or injection attempts targeting the AI?"}],"resultDescription":"Returns a JSON object containing the scan results for the submitted text, including whether prompt injection or jailbreak content was detected and a sanitized version of the input safe for LLM consumption.","failureModes":["Empty or missing 'text' parameter returns a validation error","Extremely long payloads may exceed size limits or time out","Obfuscated or novel injection techniques may evade detection","Non-text binary content may not be scannable","Rate limiting or payment failure (HTTP 402) if USDC balance is insufficient"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline ingests untrusted external content — scraped web pages, inbound emails, third-party API responses, MCP tool outputs, or A2A payloads — and you need a dedicated security layer to detect and neutralize indirect prompt injection and jailbreak attempts before they reach your LLM. Prefer this over manual filtering when the content source is attacker-controllable or when operating autonomous agent workflows where injection attacks could cause significant harm.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:24:36.111Z","isFirstParty":false,"canonicalSlug":"x402broker-com-a2a-indirect-prompt-injection-jailbreak-firewall-720e3380"}