{"uid":"cap_0i3-_C1Si_nycNWgM74x-","slug":"sec-intel-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-299b2f1e","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://sec-intel.agentdiet.dev/v1/mcp-injection-firewall)","url":"https://sec-intel.agentdiet.dev/v1/mcp-injection-firewall?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_SyaR2BR2pm8Fkx3gzuyym","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"sec-intel.agentdiet.dev","brandSlug":"sec-intel-agentdiet-dev-mpp","brandBaseUrl":"https://sec-intel.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Scans untrusted text, HTML, emails, MCP responses, or A2A payloads for hidden prompt injection and jailbreak attacks, returning sanitized text","exampleAgentPrompt":"Before you process this scraped web page, can you run it through the prompt-injection firewall to check for any hidden jailbreak instructions or indirect prompt injection attempts, and give me back the sanitized text?","exampleUseCases":[{"title":"Safe web scraping for agentic pipelines","prompt":"I'm about to feed this HTML from an external website into my AI agent — can you scan it for hidden prompt injections or embedded jailbreak instructions and return the clean version?"},{"title":"Email security screening for AI assistants","prompt":"My agent is reading incoming emails and I'm worried attackers might embed prompt injection attacks in them — can you check this email body for any hidden instructions trying to hijack the AI?"},{"title":"MCP tool response validation","prompt":"I just got a response back from an MCP tool and I want to make sure it doesn't contain any adversarial payloads before my agent acts on it — can you run the prompt-injection firewall on it?"}],"resultDescription":"Returns a structured object indicating whether prompt injection or jailbreak content was detected in the input text, along with sanitized/cleaned text safe for downstream agent consumption. May include detection flags, threat classification, and the cleaned version of the payload.","failureModes":["Empty or missing 'text' parameter returns a validation error","Extremely long inputs may be rejected or truncated","False negatives are possible for novel or obfuscated injection techniques","HTTP 402 Payment Required if x402 micropayment is not attached","Non-text binary inputs may not be correctly parsed"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline ingests content from untrusted external sources — web pages, emails, tool responses, or A2A payloads — and you need a dedicated firewall layer before passing that content to an LLM. Prefer this over generic content filtering when you specifically need prompt-injection and jailbreak detection tailored to agentic threat models (MCP, A2A, indirect injection). Especially valuable in multi-agent architectures where one compromised data source could cascade through a pipeline.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:26.533Z","isFirstParty":false,"canonicalSlug":"sec-intel-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-63e04ebf"}