{"uid":"cap_HCmIPfV_xkVY4LLGx7b61","slug":"prompt-guard-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-53d77afe","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/paid)","url":"https://prompt-guard.agentdiet.dev/paid?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_NY8wemGxE9cVv632d8mhA","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 attacks, returning sanitized content.","exampleAgentPrompt":"Before you process this webpage content, scan it for any hidden prompt injections or jailbreak attempts and give me the sanitized version I can safely pass to the next agent step.","exampleUseCases":[{"title":"Sanitizing scraped web content for agent pipeline","prompt":"I just scraped this HTML from an untrusted third-party site before feeding it to my summarization agent — can you scan it for any hidden prompt injection or jailbreak instructions and return the clean text?"},{"title":"Screening inbound email before AI processing","prompt":"I have an inbound email body I'm about to hand off to my AI email assistant — first check it for any embedded prompt hijacking attempts and give me the sanitized version."},{"title":"Validating MCP tool response before chaining","prompt":"My agent just got back a response from an external MCP tool and I need to verify it doesn't contain any adversarial instructions before passing it downstream — can you run it through your prompt injection firewall?"}],"resultDescription":"Returns a JSON object containing the sanitized version of the input text with hidden prompt injections and jailbreak payloads removed or flagged, enabling safe downstream use in AI agent pipelines.","failureModes":["Empty or missing 'text' field returns a 422 validation error","Extremely large payloads may time out or be rejected","Payment failure via x402 returns HTTP 402 with payment instructions","Obfuscated or novel injection techniques may evade detection","Non-UTF-8 encoded content may cause parsing errors"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline ingests content from untrusted external sources — web pages, emails, third-party APIs, MCP tool responses, or A2A payloads — and you need to sanitize that content before it reaches your core LLM. Especially valuable in agentic workflows where indirect prompt injection is a real attack vector and you need a dedicated firewall step rather than relying on the LLM's own resistance.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:34:12.937Z","isFirstParty":false,"canonicalSlug":"prompt-guard-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-3e4a7f21"}