{"uid":"cap_CPy_idvoTe41vII6Q_sVH","slug":"workflows-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-1d1c2676","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://workflows.agentdiet.dev/v1/llm-guard)","url":"https://workflows.agentdiet.dev/v1/llm-guard?utm_source=zero.xyz","method":"POST","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_asbOmEXhcpOBYjGGsBJsr","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"workflows.agentdiet.dev","brandSlug":"workflows-agentdiet-dev-mpp","brandBaseUrl":"https://workflows.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Scans untrusted text, web pages, emails, MCP responses, or A2A payloads for hidden prompt injection and jailbreak payloads, returning sanitized text.","exampleAgentPrompt":"Before you process this scraped webpage, run it through the prompt injection firewall to check for any hidden jailbreak instructions or adversarial content embedded in the text.","exampleUseCases":[{"title":"Protect agent from malicious web content","prompt":"I'm about to feed this scraped product page into my AI agent — can you first scan it for any hidden prompt injection attacks or embedded jailbreak instructions before passing it along?"},{"title":"Screen incoming email for AI manipulation","prompt":"This email came from an external vendor and my agent is about to summarize it — please check it for hidden prompt injections or adversarial LLM instructions first so it doesn't hijack my agent's behavior."},{"title":"Validate MCP tool response before pipeline use","prompt":"My agent just got a response back from a third-party MCP tool and I need you to run it through the prompt injection firewall before we use that output in the next step of the workflow."}],"resultDescription":"Returns a sanitized version of the submitted text along with detection results indicating whether prompt injection or jailbreak payloads were found, enabling safe downstream consumption by AI agents or LLM pipelines.","failureModes":["Empty or missing 'text' field returns a 400 validation error","Extremely long payloads may time out or be truncated","Novel or obfuscated injection techniques may evade detection","Service unavailability returns 5xx errors","False positives may flag benign content as injections"],"whenToPreferThis":"Choose this endpoint when your AI agent needs to process untrusted external content — scraped web pages, emails, MCP tool responses, or A2A payloads — and you need a dedicated security layer to detect and strip hidden prompt injection or jailbreak attempts before they reach your LLM. Prefer it over manual filtering or generic content moderation when you specifically need protection against adversarial LLM manipulation techniques embedded in third-party data sources.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:34:44.445Z","isFirstParty":false,"canonicalSlug":"workflows-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-c768e008"}