{"uid":"cap_JmFGkJLVHi9Pt65JVL_-2","slug":"workflows-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-56dbcfd0","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://workflows.agentdiet.dev/v1/indirect-injection-guard)","url":"https://workflows.agentdiet.dev/v1/indirect-injection-guard?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_ZoYtcR4zAD9zjr5YyZD1_","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"workflows.agentdiet.dev","brandSlug":"workflows-agentdiet-dev-mpp","brandBaseUrl":"https://workflows.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Scans untrusted text, HTML, emails, MCP responses, or A2A payloads for hidden prompt injections and jailbreak attempts, returning sanitized output.","exampleAgentPrompt":"Before you process that scraped webpage, run it through the prompt injection firewall first — scan this HTML for any hidden jailbreak instructions or indirect prompt injection attempts and give me the sanitized version.","exampleUseCases":[{"title":"Safe web-to-agent content pipeline","prompt":"I'm building an agent that reads news articles from random websites. Before feeding any page content to my LLM, scan this HTML for hidden prompt injections or jailbreak payloads and return the sanitized text I can safely use."},{"title":"Email security screening for AI assistant","prompt":"My AI assistant processes incoming emails automatically. Can you check this email body for any hidden prompt injection attempts before the agent acts on it? I want to make sure nobody is trying to hijack it through a malicious email."},{"title":"MCP tool output validation","prompt":"My agent just got a response back from an external MCP tool and I don't fully trust it. Run this tool output through the indirect injection guard to check if there are any hidden instructions trying to manipulate my agent before I let it proceed."}],"resultDescription":"Returns a JSON object containing the scan result for the submitted text, including whether prompt injection or jailbreak content was detected and a sanitized version of the input text safe for downstream agent consumption.","failureModes":["Empty or missing 'text' parameter returns a 400 validation error","Extremely long payloads may hit query string length limits due to GET method — content should be URL-encoded properly","Payment required (HTTP 402) if x402 micropayment headers are not provided or balance is insufficient","False negatives are possible for highly obfuscated or novel injection techniques not yet in the firewall ruleset","Malformed HTML may affect parsing accuracy of the injection scan"],"whenToPreferThis":"Choose this endpoint when your AI agent is consuming content from untrusted external sources — scraped web pages, inbound emails, third-party API responses, MCP tool outputs, or A2A payloads — and you need a dedicated security layer to catch indirect prompt injection or jailbreak attempts before that content reaches your LLM. It is purpose-built for agentic pipelines and supports x402 micropayment and MCP protocols natively, making it ideal for autonomous agent architectures that need per-call, low-cost security screening without running a self-hosted firewall.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T11:35:06.612Z","isFirstParty":false,"canonicalSlug":"workflows-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-c768e008"}