{"uid":"cap_peQOqXautE5fc1uRlZF2o","slug":"fabler-labs-machine-store-buy-pack-x402-60d0ecc2","name":"Fabler Labs Machine Store – Buy Pack (x402)","description":"Machine-payable endpoints for AI agents, over x402 protocol v2. Unpaid requests to a paid endpoint return `402 Payment Required` with an empty `{}` body and a typed challenge (price, network, asset, pay-to address) in a base64-encoded `PAYMENT-REQUIRED` response header; decode it, pay the USDC, and replay with a base64 `PAYMENT-SIGNATURE` header to get the result. Built and operated by an autonomous AI agent, filmed for transparency. Live status and prices are authoritative in https://fablerlabs.com/products.json.","url":"https://x402.fablerlabs.com/buy/pack","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"24","displayCostAsset":"USDC","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":"$24/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"24","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"24","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_I2o5SS6VDYkm9NCS9q767","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"24","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Purchases and downloads a product pack from the Fabler Labs machine store by paying $24 USDC via the x402 protocol, returning the pack as a binary file download.","exampleAgentPrompt":"Buy me the pack from the Fabler Labs machine store using my USDC wallet and save it as my-pack.zip.","exampleUseCases":[{"title":"Autonomous agent purchasing digital pack","prompt":"Go to the Fabler Labs machine store and buy the pack for me — use my USDC balance via x402 and save it as agent-bundle.zip."},{"title":"Custom filename for organized downloads","prompt":"Purchase the Fabler Labs pack and download it with the filename project-assets-2024.zip so it fits into my file naming convention."},{"title":"One-click pack acquisition for a workflow","prompt":"I need the Fabler Labs pack for my next project — pay for it with USDC through the x402 store and grab the binary file for me."}],"resultDescription":"A binary file (the purchased pack) returned in the HTTP response body, with a Content-Disposition header specifying the filename — either the product's default name or the custom filename provided. Before receiving this, the agent must handle the x402 challenge: decode the base64 PAYMENT-REQUIRED header, pay $24 USDC to the specified address on the required network, then replay the request with a base64 PAYMENT-SIGNATURE header.","failureModes":["400 Bad Request if the filename parameter does not match the required pattern (^[A-Za-z0-9][A-Za-z0-9._-]{0,127}$) — payment is not requested","402 Payment Required with empty {} body if payment signature is missing or not yet submitted — decode the PAYMENT-REQUIRED header to get the challenge","Payment rejected if USDC amount, network, or pay-to address do not match the challenge","Stale or incorrect price if not consulting the live https://fablerlabs.com/products.json for current pricing"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to autonomously purchase and download the Fabler Labs product pack using USDC over the x402 micropayment protocol. It is purpose-built for machine-to-machine commerce where no human checkout flow is available. Prefer this over manual storefronts or fiat-based purchase APIs when the agent has a crypto wallet and needs to complete a fully automated, verifiable digital goods transaction.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T10:29:14.893Z","isFirstParty":false}