{"uid":"cap_rO-223xGwPQwqbOI88Bdb","slug":"mcp-security-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-7d038ebe","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://mcp-security.agentdiet.dev/v1/tool-poisoning-shield)","url":"https://mcp-security.agentdiet.dev/v1/tool-poisoning-shield?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_VnW0fSuuVnSh-2F2AHfXZ","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"mcp-security.agentdiet.dev","brandSlug":"mcp-security-agentdiet-dev-mpp","brandBaseUrl":"https://mcp-security.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Scans untrusted text, HTML, emails, MCP responses, or A2A payloads for hidden prompt injection and jailbreak attacks, returning sanitized output.","exampleAgentPrompt":"Before you process that scraped webpage content, run it through the prompt-injection firewall to check for any hidden jailbreak or indirect prompt injection attempts — here's the raw HTML text to scan.","exampleUseCases":[{"title":"Securing agent web browsing pipeline","prompt":"I'm building an agent that browses the web and I'm worried about prompt injection attacks hidden in pages. Can you scan this HTML I just scraped from an untrusted site before passing it to the LLM?"},{"title":"Filtering inbound emails for AI helpdesk","prompt":"My AI support agent reads incoming customer emails — can you check this email body for hidden prompt injections or jailbreak payloads before the agent acts on it?"},{"title":"Validating MCP tool responses","prompt":"My agent just got back a response from an external MCP tool and I want to make sure it's safe. Can you run this tool output through the prompt-injection firewall before I let the agent use it?"}],"resultDescription":"Returns a structured object indicating whether the input text contains prompt injection or jailbreak content, along with sanitized text safe for downstream LLM consumption.","failureModes":["Missing required 'text' parameter returns a 400 error","Empty string input rejected due to minLength:1 constraint","Very large payloads may timeout or be truncated","Obfuscated or encoded injections may evade detection","Payment failure (402) if x402 micropayment is not completed"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline ingests untrusted external content — web pages, emails, MCP/A2A payloads, or user-submitted text — and you need a dedicated firewall step to detect and neutralize hidden prompt injection or jailbreak attempts before the content reaches your LLM. Prefer it over generic content filters when you specifically need LLM-oriented adversarial attack detection in an agent-to-agent or agentic workflow context.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:26:15.795Z","isFirstParty":false,"canonicalSlug":"mcp-security-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-b58431aa"}