{"uid":"cap_ACrSRJQulCnqsdKOknvqk","slug":"domain-osint-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-9c30a2f9","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/llm-guard)","url":"https://domain-osint.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_keWW_rk8uJckwj30fE0F3","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, MCP responses, or A2A payloads for hidden prompt injections and jailbreak attempts, returning sanitized output.","exampleAgentPrompt":"Before you summarize that webpage I just scraped, run the raw HTML through the LLM Guard firewall to check for any hidden prompt injections or jailbreak instructions embedded in the content.","exampleUseCases":[{"title":"Sanitize scraped web content before LLM processing","prompt":"I'm about to feed this scraped article HTML to my summarization agent — can you scan it through the prompt injection firewall first to make sure there are no hidden adversarial instructions embedded in the page?"},{"title":"Screen incoming emails for prompt injection attacks","prompt":"This email was forwarded by an external contact and my agent is about to read it — please run the full email body through the LLM Guard to check if it contains any jailbreak or prompt injection attempts before my agent processes it."},{"title":"Guard agent pipeline from malicious MCP tool responses","prompt":"My agent just received a response from an external MCP tool and I'm worried it might contain embedded prompt injection payloads — scan that tool output for hidden instructions before we pass it along to the next step in the pipeline."}],"resultDescription":"Returns a structured JSON object indicating whether the input text contained prompt injection or jailbreak payloads, along with a sanitized version of the text safe for downstream LLM consumption.","failureModes":["Empty or missing 'text' field returns a 400 validation error","Payload exceeding size limits may be rejected or truncated","Payment failure (402) if x402 micropayment is not properly attached","Transient upstream errors may return 5xx responses requiring retry with Idempotency-Key","Extremely obfuscated injections may evade detection (false negatives)"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline ingests untrusted external content — scraped HTML, emails, MCP tool responses, or A2A messages — that could contain adversarial prompt injection or jailbreak instructions. It is specifically designed for agent-to-agent and LLM security contexts, making it preferable over generic content moderation APIs when the threat model involves hidden instructions targeting language model behavior rather than user-facing harmful content.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:31:22.630Z","isFirstParty":false,"canonicalSlug":"domain-osint-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-d28cd535"}