{"uid":"cap_yORpilFhRgboY30MCLc8v","slug":"prompt-guard-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-7e39e6d5","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://prompt-guard.agentdiet.dev/v1/rag-poison-shield)","url":"https://prompt-guard.agentdiet.dev/v1/rag-poison-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_TsXiYzX8ki9oia6_Avhxy","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"prompt-guard.agentdiet.dev","brandSlug":"prompt-guard-agentdiet-dev-mpp","brandBaseUrl":"https://prompt-guard.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 this web page I scraped, run it through the prompt-injection firewall to check for any hidden jailbreak instructions or prompt injection attacks embedded in the text.","exampleUseCases":[{"title":"Protecting RAG pipeline from poisoned documents","prompt":"I'm about to feed this document I pulled from the web into my RAG system — can you scan it for hidden prompt injection or jailbreak payloads before I index it?"},{"title":"Sanitizing email before agent processing","prompt":"I have an email body here that my agent needs to read and act on, but I don't trust the sender — please run it through the prompt-injection firewall first and give me the sanitized version."},{"title":"Guarding MCP tool response from adversarial content","prompt":"This MCP tool just returned a response with some suspicious-looking text — scan it for embedded jailbreak instructions before we pass it along to the next step in the workflow."}],"resultDescription":"Returns an 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 LLM consumption.","failureModes":["Empty or missing 'text' parameter returns a validation error","Very large payloads may exceed size limits or time out","False negatives are possible for novel or obfuscated injection techniques","Service unavailability returns HTTP 402 or 5xx if payment or quota issues arise","Malformed HTML that can't be parsed may produce incomplete sanitization"],"whenToPreferThis":"Choose this endpoint when your agent pipeline ingests content from untrusted external sources — scraped web pages, emails, third-party API responses, MCP tool outputs, or A2A payloads — and you need to detect and neutralize hidden prompt injection or jailbreak instructions before they reach your LLM. It is especially valuable in RAG pipelines and multi-agent swarms where adversarial content injection is a realistic attack vector.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:21:25.630Z","isFirstParty":false,"canonicalSlug":"prompt-guard-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-3e4a7f21"}