{"uid":"cap_0cmOD0sBpwpWvB8UKQGa4","slug":"prompt-guard-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-a7627bf7","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://prompt-guard.agentdiet.dev/v1/indirect-injection-guard)","url":"https://prompt-guard.agentdiet.dev/v1/indirect-injection-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_yU0rKv98iNMp0tU1L8Jvb","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"prompt-guard.agentdiet.dev","brandSlug":"prompt-guard-agentdiet-dev-mpp","brandBaseUrl":"https://prompt-guard.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Scans untrusted text, HTML, emails, MCP responses, or A2A payloads for hidden prompt injection and jailbreak attempts, returning sanitized output.","exampleAgentPrompt":"Before you summarize that webpage, run its raw HTML through the prompt injection firewall to check for hidden adversarial instructions trying to hijack you, then show me the sanitized version.","exampleUseCases":[{"title":"Guard agent from malicious webpage","prompt":"I'm about to feed you the contents of a user-submitted URL — before you process it, scan the raw HTML for any hidden prompt injections or jailbreak payloads and only use the sanitized text."},{"title":"Sanitize incoming email before LLM summarization","prompt":"This email came from an unknown sender — can you run the body text through the prompt injection firewall to make sure it's not trying to hijack you before you summarize it for me?"},{"title":"Validate MCP tool response safety","prompt":"The MCP tool just returned a response from an external server — scan that payload for any embedded prompt injection attempts before you act on the instructions inside it."}],"resultDescription":"A JSON object containing the scan result for the submitted text, including detection of hidden prompt injections or jailbreak payloads and a sanitized version of the input text safe for downstream LLM consumption.","failureModes":["Empty or missing 'text' field returns a validation error","Extremely large payloads may exceed size limits or time out","Obfuscated or novel injection techniques may evade detection","Non-text binary content may not be correctly parsed","Payment failure (402) if x402 micropayment is not properly handled"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline ingests content from untrusted external sources — scraped web pages, user-submitted emails, third-party API responses, MCP tool outputs, or A2A agent payloads — and you need to sanitize them before passing them to an LLM to prevent indirect prompt injection or jailbreak attacks. Prefer it over manual filtering when you need a dedicated, always-on firewall specifically trained to detect adversarial LLM manipulation patterns.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:34:11.526Z","isFirstParty":false,"canonicalSlug":"prompt-guard-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-3e4a7f21"}