{"uid":"cap_bbt-HQ2_lNXr7GbTsXcwD","slug":"arxiv-digest-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-6b882469","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://arxiv-digest.agentdiet.dev/v1/rag-poison-shield)","url":"https://arxiv-digest.agentdiet.dev/v1/rag-poison-shield?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_ZYOe6WfWoxAnOHao5tMC7","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"arxiv-digest.agentdiet.dev","brandSlug":"arxiv-digest-agentdiet-dev-mpp","brandBaseUrl":"https://arxiv-digest.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Scans untrusted text, HTML, emails, MCP responses, or A2A payloads for hidden prompt injections and jailbreak attempts, returning sanitized text.","exampleAgentPrompt":"Before you process that scraped web page, run it through the prompt-injection firewall to check for any hidden jailbreak instructions embedded in the HTML and give me the sanitized version.","exampleUseCases":[{"title":"RAG pipeline poisoning defense","prompt":"I'm building a RAG system that pulls documents from the web — can you scan this document chunk for any hidden prompt injections or adversarial instructions before we embed it into our vector store?"},{"title":"Agent email inbox protection","prompt":"My AI assistant is about to read and act on this incoming email — please check it for any jailbreak payloads or indirect prompt-injection attacks hidden in the message body first."},{"title":"MCP tool response sanitization","prompt":"I just got back a response from an external MCP tool and I want to make sure it hasn't been poisoned with adversarial prompts before my agent uses it — can you run it through the injection firewall?"}],"resultDescription":"Returns a structured object containing the sanitized version of the input text with prompt-injection and jailbreak payloads removed or flagged, along with detection metadata indicating whether threats were found.","failureModes":["Empty or missing 'text' parameter returns a 400 validation error","Extremely long payloads may exceed size limits or timeout","Novel or obfuscated injection techniques may evade detection","Non-text binary content may not be parseable","Rate limiting or payment failures (HTTP 402) if USDC balance is insufficient"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline ingests untrusted third-party content — web scrapes, emails, MCP/A2A tool responses, or RAG documents — and you need a dedicated security firewall to detect and neutralize hidden prompt injections or jailbreak attempts before they reach your LLM. Prefer this over generic content filters when your threat model specifically involves adversarial instruction hijacking targeting AI agents.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:51:22.526Z","isFirstParty":false,"canonicalSlug":"arxiv-digest-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-63370fac"}