{"uid":"cap_-I2lhLtwtXHvsnPIVHcQv","slug":"alpha-stream-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-015b3890","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://alpha-stream.agentdiet.dev/v1/guard)","url":"https://alpha-stream.agentdiet.dev/v1/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_FZSLWDaH4PwqGDkFiX40F","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"alpha-stream.agentdiet.dev","brandSlug":"alpha-stream-agentdiet-dev-mpp","brandBaseUrl":"https://alpha-stream.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 web page I just scraped, can you run it through the prompt injection firewall to check for any hidden jailbreak instructions and give me back the sanitized version?","exampleUseCases":[{"title":"Sanitizing scraped web content before LLM processing","prompt":"I'm about to feed this scraped article into my summarizer agent — can you first scan this HTML for any hidden prompt injections or jailbreak commands and give me the safe, cleaned version?"},{"title":"Guarding agent pipeline from poisoned email inputs","prompt":"This customer email is going to be processed by my support agent. Before it does, scan the email body for any embedded prompt injection attacks or manipulation instructions hidden in the text."},{"title":"Validating MCP tool response before chaining to next agent","prompt":"My MCP tool just returned this response and I want to pass it to the next agent in my workflow — can you check it for any hidden adversarial instructions or jailbreak payloads first?"}],"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 text safe for downstream agent consumption.","failureModes":["Empty or missing 'text' parameter returns a 400 validation error","Very large payloads may exceed size limits or cause timeouts","Payment failure (HTTP 402) if USDC balance is insufficient for the $0.005 per-call fee","Sophisticated obfuscated injections may evade detection (false negatives)","Non-text binary content passed as text may produce unreliable results"],"whenToPreferThis":"Choose this endpoint when your AI agent pipeline ingests untrusted external content — web pages, emails, third-party API responses, MCP tool outputs, or A2A payloads — and you need a dedicated security layer to detect and neutralize hidden prompt injections or jailbreak attempts before that content reaches your LLM. Prefer this over manual filtering when you need automated, per-call protection at $0.005 with x402 micropayment support in an agent-native workflow.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:49.518Z","isFirstParty":false,"canonicalSlug":"alpha-stream-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-015b3890"}