{"uid":"cap_LZw3W0eHO8_l2vmSsRR9q","slug":"shopify-intel-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-af95c87e","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://shopify-intel.agentdiet.dev/v1/prompt-shield)","url":"https://shopify-intel.agentdiet.dev/v1/prompt-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_GPP3AV1SxQPMKxzDnupJb","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"shopify-intel.agentdiet.dev","brandSlug":"shopify-intel-agentdiet-dev-mpp","brandBaseUrl":"https://shopify-intel.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Scans untrusted text, HTML, emails, MCP responses, or A2A payloads for hidden prompt injections and jailbreak attempts, returning sanitized text.","exampleAgentPrompt":"Before you process that scraped web page, run the full HTML through the prompt-shield firewall to check for hidden prompt injections or jailbreak payloads and give me the sanitized version.","exampleUseCases":[{"title":"Safe web scraping for agent pipelines","prompt":"I'm about to feed this scraped article HTML into my summarization agent — can you first scan it through the prompt-shield firewall to make sure there are no hidden injection attacks embedded in it?"},{"title":"Email safety check before agent processing","prompt":"Before my agent reads and acts on this incoming email, run the full email body through the prompt-injection firewall and tell me if anything suspicious was found or removed."},{"title":"MCP tool response sanitization","prompt":"My agent just got a response back from an external MCP tool — can you scan that response text for any hidden jailbreak or prompt injection payloads before I let the agent continue using it?"}],"resultDescription":"Returns a sanitized version of the input text with any detected prompt injection or jailbreak payloads removed or flagged, along with threat detection metadata indicating whether malicious content was found.","failureModes":["Empty or whitespace-only text input returns a validation error","Extremely long payloads may be truncated or rejected","Service may produce false positives on legitimate instruction-like text","Network timeout for large HTML documents","x402 payment failure if USDC balance is insufficient"],"whenToPreferThis":"Use this endpoint when your AI agent pipeline ingests content from untrusted external sources — web pages, emails, third-party API responses, or MCP/A2A tool outputs — and you need to sanitize them before passing content to an LLM. Especially valuable in agentic workflows where indirect prompt injection could hijack agent behavior.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:24:20.781Z","isFirstParty":false,"canonicalSlug":"shopify-intel-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-2f446dd7"}