{"uid":"cap_CGl10QaSsnXjSNsKInE6I","slug":"polymarket-odds-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-d20c69d1","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://polymarket-odds.agentdiet.dev/v1/llm-guard)","url":"https://polymarket-odds.agentdiet.dev/v1/llm-guard?utm_source=zero.xyz","method":"POST","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_aXLWRTWt4s_Has3wen0uD","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"polymarket-odds.agentdiet.dev","brandSlug":"polymarket-odds-agentdiet-dev-mpp","brandBaseUrl":"https://polymarket-odds.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 summarize this scraped webpage content, run it through the prompt-injection firewall to check for any hidden jailbreak payloads or adversarial instructions embedded in the HTML: [paste content here].","exampleUseCases":[{"title":"Safe web scraping for an AI agent","prompt":"I just scraped this article page for you to summarize, but first scan the raw HTML through the prompt-injection firewall to make sure there are no hidden adversarial instructions buried in it before you process it."},{"title":"Screening inbound emails before agent handling","prompt":"Before my agent replies to this customer email, run the full email body through the LLM guard to check whether it contains any prompt injection or jailbreak attempts hidden in the text."},{"title":"Validating third-party MCP tool output","prompt":"My agent just got a response back from an external MCP tool — can you scan that payload for hidden prompt injections before we pass it along to the next step in the workflow?"}],"resultDescription":"Returns a JSON object containing the sanitized version of the input text with any detected prompt injection or jailbreak payloads neutralized, along with detection metadata indicating whether threats were found.","failureModes":["Empty or missing 'text' field returns a 400 validation error","Extremely large payloads may time out or be truncated","False negatives: sophisticated obfuscated injections may not be detected","Payment failure via x402 returns 402 Payment Required","Service unavailability returns 503"],"whenToPreferThis":"Choose this endpoint when your AI agent needs to process untrusted external content — scraped web pages, inbound emails, third-party API or MCP responses, or A2A payloads — and must guard against indirect prompt injection or jailbreak attacks before that content influences downstream LLM behavior. It is especially valuable in multi-agent pipelines where one agent's output becomes another agent's input.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T06:34:53.880Z","isFirstParty":false,"canonicalSlug":"polymarket-odds-agentdiet-dev-a2a-indirect-prompt-injection-jailbreak-8ce8b4f9"}