{"generated_at":"2026-10-05T22:44:43.654Z","notice":"Public HTTP purchase preview. Testnet only: every payment is in test tokens (USDC on Base Sepolia, and where listed USDC on Arc Testnet, pathUSD on Tempo Moderato or USDC on Solana devnet) and moves no real money. Services marked simulated return prepared, simulated output.","authority":"An agent can ask for a purchase; only the owner can pay for it. Every payment is approved by the owner on superstables.com with their own wallet, which signs one authorization for exactly the amount and recipient shown. Superstables never holds a key or funds, and an agent never receives the signature.","supported":{"protocol":"x402","x402_version":2,"scheme":"exact","network":"eip155:84532","network_label":"Base Sepolia (testnet)","testnet":true,"asset":{"symbol":"USDC","address":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","decimals":6},"wallet":{"supported":"a browser wallet whose account is a regular key (an EOA), such as the MetaMask extension on a computer, or the browser inside a wallet's phone app, such as MetaMask Mobile (open the full approval link there)","not_yet":["smart-contract wallets, such as Coinbase Smart Wallet or a Safe","a phone's ordinary browser, which has no wallet"],"funds":"test USDC on Base Sepolia, at least the amount of the payment (free at https://faucet.circle.com); no ETH is needed"}},"links":{"entry":"https://www.superstables.com/api/v1/purchase","purchases":"https://www.superstables.com/api/v1/purchases","quickstart":"https://www.superstables.com/docs/purchase.md"},"services":[{"id":"superstables-demo-market-data","name":"Superstables demo market data","description":"Spot price and 24-hour change for BTC or ETH from Coinbase's public spot prices: a controlled test service operated for the Superstables demo; it charges test USDC on Base Sepolia and moves no real money.","operator":"Superstables (demo service on the testnet)","simulated":false,"testnet":true,"available":true,"request":{"method":"GET","endpoint":"https://www.superstables.com/api/demo/market","params":[{"name":"asset","in":"query","required":true,"description":"Which asset to return market data for.","enum":["BTC","ETH"],"example":"BTC"}],"unknown_params":"rejected","example_url":"https://www.superstables.com/api/demo/market?asset=BTC"},"payment":{"protocol":"x402","x402_version":2,"scheme":"exact","network":"eip155:84532","network_label":"Base Sepolia (testnet)","asset":{"symbol":"USDC","address":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","decimals":6},"amount":{"decimal":"0.01","atomic":"10000"},"price_display":"0.01 test USDC per request","pay_to":"0xAfcd5F5C7622a5C09422A0e8FB850460bdA9E48E","max_timeout_seconds":300},"returns":{"asset":"string","price_usd":"number|null","change_24h_pct":"number|null","as_of":"ISO 8601","source":"string"},"example_prompts":["Buy the current BTC market data from Superstables on the testnet, and show me the price before I approve."],"links":{"self":"https://www.superstables.com/api/v1/purchase/services/superstables-demo-market-data","purchase":"https://www.superstables.com/api/v1/purchases","quickstart":"https://www.superstables.com/docs/purchase.md"}},{"id":"superstables-demo-market-data-arc","name":"Superstables demo market data on Arc","description":"Spot price and 24-hour change for BTC or ETH from Coinbase's public spot prices, paid over x402 in test USDC on Arc Testnet. A controlled test service operated for the Superstables demo; it moves no real money.","operator":"Superstables (demo service on the testnet)","simulated":false,"testnet":true,"available":true,"request":{"method":"GET","endpoint":"https://www.superstables.com/api/demo/market/arc","params":[{"name":"asset","in":"query","required":true,"description":"Which asset to return market data for.","enum":["BTC","ETH"],"example":"BTC"}],"unknown_params":"rejected","example_url":"https://www.superstables.com/api/demo/market/arc?asset=BTC"},"payment":{"protocol":"x402","x402_version":2,"scheme":"exact","network":"eip155:5042002","network_label":"Arc Testnet","asset":{"symbol":"USDC","address":"0x3600000000000000000000000000000000000000","decimals":6},"amount":{"decimal":"0.01","atomic":"10000"},"price_display":"0.01 test USDC per request","pay_to":"0x39aB3b4CE541Bbae9BF5c8E1401fb5bD9a4175c4","max_timeout_seconds":300},"returns":{"asset":"string","price_usd":"number|null","change_24h_pct":"number|null","as_of":"ISO 8601","source":"string"},"example_prompts":["Buy the current BTC market data from Superstables on Arc Testnet, and show me the purchase price before I approve."],"links":{"self":"https://www.superstables.com/api/v1/purchase/services/superstables-demo-market-data-arc","purchase":"https://www.superstables.com/api/v1/purchases","quickstart":"https://www.superstables.com/docs/purchase.md"}},{"id":"superstables-demo-market-data-tempo","name":"Superstables demo market data on Tempo","description":"Spot price and 24-hour change for BTC or ETH from Coinbase's public spot prices, paid over MPP (tempo.charge) in test pathUSD on Tempo Moderato. A controlled test service operated for the Superstables demo; it moves no real money.","operator":"Superstables (demo service on the testnet)","simulated":false,"testnet":true,"available":true,"request":{"method":"GET","endpoint":"https://www.superstables.com/api/demo/market/tempo","params":[{"name":"asset","in":"query","required":true,"description":"Which asset to return market data for.","enum":["BTC","ETH"],"example":"BTC"}],"unknown_params":"rejected","example_url":"https://www.superstables.com/api/demo/market/tempo?asset=BTC"},"payment":{"protocol":"mpp","method":"tempo","intent":"charge","network":"eip155:42431","network_label":"Tempo Moderato (testnet)","asset":{"symbol":"pathUSD","address":"0x20C0000000000000000000000000000000000000","decimals":6},"amount":{"decimal":"0.001","atomic":"1000"},"price_display":"0.001 test pathUSD per request","pay_to":"0xAfcd5F5C7622a5C09422A0e8FB850460bdA9E48E","max_timeout_seconds":900},"returns":{"asset":"string","price_usd":"number|null","change_24h_pct":"number|null","as_of":"ISO 8601","source":"string"},"example_prompts":["Buy the current BTC market data from Superstables on Tempo Moderato, and show me the price before I approve."],"links":{"self":"https://www.superstables.com/api/v1/purchase/services/superstables-demo-market-data-tempo","purchase":"https://www.superstables.com/api/v1/purchases","quickstart":"https://www.superstables.com/docs/purchase.md"}},{"id":"superstables-demo-market-data-solana","name":"Superstables demo market data on Solana","description":"Spot price and 24-hour change for BTC or ETH from Coinbase's public spot prices, paid over x402 in test USDC on Solana devnet. A controlled test service operated for the Superstables demo; it moves no real money.","operator":"Superstables (demo service on the testnet)","simulated":false,"testnet":true,"available":true,"request":{"method":"GET","endpoint":"https://www.superstables.com/api/demo/market/solana","params":[{"name":"asset","in":"query","required":true,"description":"Which asset to return market data for.","enum":["BTC","ETH"],"example":"BTC"}],"unknown_params":"rejected","example_url":"https://www.superstables.com/api/demo/market/solana?asset=BTC"},"payment":{"protocol":"x402","x402_version":2,"scheme":"exact","network":"solana:EtWTRABZaYq6iMfeYKouRu166VU2xqa1","network_label":"Solana devnet (testnet)","asset":{"symbol":"USDC","address":"4zMMC9srt5Ri5X14GAgXhaHii3GnPAEERYPJgZJDncDU","decimals":6},"amount":{"decimal":"0.01","atomic":"10000"},"price_display":"0.01 test USDC per request","pay_to":"p98Q3DwT47icygYqRkgnGkDE54LZ78vHEomuMbTgFp1","max_timeout_seconds":300},"returns":{"asset":"string","price_usd":"number|null","change_24h_pct":"number|null","as_of":"ISO 8601","source":"string"},"example_prompts":["Buy the current BTC market data from Superstables on Solana devnet, and show me the price before I approve."],"links":{"self":"https://www.superstables.com/api/v1/purchase/services/superstables-demo-market-data-solana","purchase":"https://www.superstables.com/api/v1/purchases","quickstart":"https://www.superstables.com/docs/purchase.md"}},{"id":"superstables-demo-wallet-briefing","name":"Wallet briefing","description":"A plain-language briefing on a sample wallet: balances, activity over a period, notable transactions and open positions. Simulated service output. Payment uses test USDC on Base Sepolia.","operator":"Superstables (prepared demo service on the testnet)","simulated":true,"testnet":true,"available":true,"request":{"method":"GET","endpoint":"https://www.superstables.com/api/demo/services/wallet-briefing","params":[{"name":"sample_wallet","in":"query","required":true,"description":"Which prepared sample wallet to brief on. These are fictional wallets, not the owner's.","enum":["demo-active","demo-dormant","demo-treasury"],"example":"demo-active"},{"name":"period","in":"query","required":false,"description":"How far back the briefing looks.","enum":["7d","30d"],"default":"7d","example":"7d"}],"unknown_params":"rejected","example_url":"https://www.superstables.com/api/demo/services/wallet-briefing?sample_wallet=demo-active"},"payment":{"protocol":"x402","x402_version":2,"scheme":"exact","network":"eip155:84532","network_label":"Base Sepolia (testnet)","asset":{"symbol":"USDC","address":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","decimals":6},"amount":{"decimal":"0.003","atomic":"3000"},"price_display":"0.003 test USDC per request","pay_to":"0xAfcd5F5C7622a5C09422A0e8FB850460bdA9E48E","max_timeout_seconds":300},"returns":{"wallet":"{ label, address }","period":"string","balances":"[{ asset, amount, chain }]","activity":"{ transactions, inflow_usdc, outflow_usdc, notable[] }","positions":"[{ protocol, kind, value_usdc, note }]"},"example_prompts":["Buy me a briefing on the sample wallet demo-active for the last 7 days.","Get a 30-day wallet briefing for demo-treasury and tell me where the money went."],"links":{"self":"https://www.superstables.com/api/v1/purchase/services/superstables-demo-wallet-briefing","purchase":"https://www.superstables.com/api/v1/purchases","quickstart":"https://www.superstables.com/docs/purchase.md"}},{"id":"superstables-demo-contract-screening","name":"Token and contract screening","description":"A risk screening of a sample token contract: ownership, mint authority, transfer restrictions, liquidity lock, holder concentration, verified source, findings by severity and a plain verdict. Simulated service output. Payment uses test USDC on Base Sepolia.","operator":"Superstables (prepared demo service on the testnet)","simulated":true,"testnet":true,"available":true,"request":{"method":"GET","endpoint":"https://www.superstables.com/api/demo/services/contract-screening","params":[{"name":"token_id","in":"query","required":true,"description":"Which prepared sample contract to screen. These are fictional contracts, not live tokens.","enum":["sample-usdc-base","sample-meme-token","sample-lp-token"],"example":"sample-usdc-base"}],"unknown_params":"rejected","example_url":"https://www.superstables.com/api/demo/services/contract-screening?token_id=sample-usdc-base"},"payment":{"protocol":"x402","x402_version":2,"scheme":"exact","network":"eip155:84532","network_label":"Base Sepolia (testnet)","asset":{"symbol":"USDC","address":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","decimals":6},"amount":{"decimal":"0.005","atomic":"5000"},"price_display":"0.005 test USDC per request","pay_to":"0xAfcd5F5C7622a5C09422A0e8FB850460bdA9E48E","max_timeout_seconds":300},"returns":{"token":"{ label, symbol, address, chain }","checks":"{ verified_source, ownership, upgradeable, mint_authority, transfer_restrictions, liquidity_lock, holder_concentration }","findings":"[{ severity: info | low | medium | high, finding }]","verdict":"{ risk: low | medium | high, note }"},"example_prompts":["Screen the sample token sample-meme-token before I consider buying it.","Run a contract screening on sample-lp-token and tell me what the medium findings are."],"links":{"self":"https://www.superstables.com/api/v1/purchase/services/superstables-demo-contract-screening","purchase":"https://www.superstables.com/api/v1/purchases","quickstart":"https://www.superstables.com/docs/purchase.md"}},{"id":"superstables-demo-web-search","name":"Web search","description":"Prepared web search results for one of three fixed queries about agent payments: ranked results with title, URL and snippet, and a short answer drawn from them. Simulated service output. Payment uses test USDC on Base Sepolia.","operator":"Superstables (prepared demo service on the testnet)","simulated":true,"testnet":true,"available":true,"request":{"method":"GET","endpoint":"https://www.superstables.com/api/demo/services/web-search","params":[{"name":"query_id","in":"query","required":true,"description":"Which prepared query to answer: x402-facilitators (what is an x402 facilitator), base-sepolia-faucet (how to get test USDC and ETH on Base Sepolia) or eip-3009-authorizations (how EIP-3009 transferWithAuthorization works). No other query is searched.","enum":["x402-facilitators","base-sepolia-faucet","eip-3009-authorizations"],"example":"x402-facilitators"},{"name":"max_results","in":"query","required":false,"description":"How many of the prepared ranked results to return.","enum":["3","5"],"default":"5","example":"5"}],"unknown_params":"rejected","example_url":"https://www.superstables.com/api/demo/services/web-search?query_id=x402-facilitators"},"payment":{"protocol":"x402","x402_version":2,"scheme":"exact","network":"eip155:84532","network_label":"Base Sepolia (testnet)","asset":{"symbol":"USDC","address":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","decimals":6},"amount":{"decimal":"0.003","atomic":"3000"},"price_display":"0.003 test USDC per request","pay_to":"0xAfcd5F5C7622a5C09422A0e8FB850460bdA9E48E","max_timeout_seconds":300},"returns":{"query_id":"string","query":"string","result_count":"number","results":"[{ rank, title, url, snippet }]","answer":"string","note":"string"},"example_prompts":["Search the web for what an x402 facilitator does, query_id x402-facilitators, and give me the top 3 results.","Run the base-sepolia-faucet search and tell me where to get test USDC on Base Sepolia."],"links":{"self":"https://www.superstables.com/api/v1/purchase/services/superstables-demo-web-search","purchase":"https://www.superstables.com/api/v1/purchases","quickstart":"https://www.superstables.com/docs/purchase.md"}},{"id":"superstables-demo-whitepaper-extraction","name":"Whitepaper extraction","description":"A structured extraction from one section of a sample whitepaper: key points, named figures and short direct quotes with the section they came from. Simulated service output. Payment uses test USDC on Base Sepolia.","operator":"Superstables (prepared demo service on the testnet)","simulated":true,"testnet":true,"available":true,"request":{"method":"GET","endpoint":"https://www.superstables.com/api/demo/services/whitepaper-extraction","params":[{"name":"document_id","in":"query","required":true,"description":"Which prepared sample whitepaper to extract from. These are fictional documents, not real projects.","enum":["sample-lending-protocol","sample-stablecoin"],"example":"sample-lending-protocol"},{"name":"section","in":"query","required":false,"description":"Which section of the whitepaper to extract.","enum":["summary","tokenomics","risks"],"default":"summary","example":"summary"}],"unknown_params":"rejected","example_url":"https://www.superstables.com/api/demo/services/whitepaper-extraction?document_id=sample-lending-protocol"},"payment":{"protocol":"x402","x402_version":2,"scheme":"exact","network":"eip155:84532","network_label":"Base Sepolia (testnet)","asset":{"symbol":"USDC","address":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","decimals":6},"amount":{"decimal":"0.005","atomic":"5000"},"price_display":"0.005 test USDC per request","pay_to":"0xAfcd5F5C7622a5C09422A0e8FB850460bdA9E48E","max_timeout_seconds":300},"returns":{"document":"{ id, title }","section":"string","key_points":"string[]","figures":"{ [name]: value }","quotes":"[{ text, section }]"},"example_prompts":["Extract the tokenomics section of the sample-lending-protocol whitepaper and list the token allocation.","Pull the key risks out of the sample-stablecoin whitepaper, with direct quotes."],"links":{"self":"https://www.superstables.com/api/v1/purchase/services/superstables-demo-whitepaper-extraction","purchase":"https://www.superstables.com/api/v1/purchases","quickstart":"https://www.superstables.com/docs/purchase.md"}},{"id":"superstables-demo-specialist-research","name":"Specialist research","description":"A prepared research brief on one agent-payments topic: findings with reasoning, what they mean, open questions and a confidence level. Simulated service output. Payment uses test USDC on Base Sepolia.","operator":"Superstables (prepared demo service on the testnet)","simulated":true,"testnet":true,"available":true,"request":{"method":"GET","endpoint":"https://www.superstables.com/api/demo/services/specialist-research","params":[{"name":"topic_id","in":"query","required":true,"description":"Which prepared topic to brief on.","enum":["stablecoin-settlement-latency","agent-payment-rails","testnet-facilitators"],"example":"agent-payment-rails"},{"name":"depth","in":"query","required":false,"description":"How much comes back: brief gives three findings, standard gives five and the open questions.","enum":["brief","standard"],"default":"standard","example":"standard"}],"unknown_params":"rejected","example_url":"https://www.superstables.com/api/demo/services/specialist-research?topic_id=agent-payment-rails"},"payment":{"protocol":"x402","x402_version":2,"scheme":"exact","network":"eip155:84532","network_label":"Base Sepolia (testnet)","asset":{"symbol":"USDC","address":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","decimals":6},"amount":{"decimal":"0.02","atomic":"20000"},"price_display":"0.02 test USDC per request","pay_to":"0xAfcd5F5C7622a5C09422A0e8FB850460bdA9E48E","max_timeout_seconds":300},"returns":{"topic":"{ id, title, question }","depth":"string","findings":"[{ claim, reasoning }]","what_this_means":"string","open_questions":"string[]","confidence":"\"low\" | \"medium\" | \"high\"","method":"string"},"example_prompts":["Buy a research brief on agent-payment-rails and summarise how x402, MPP and ACP differ.","Get me a brief on testnet-facilitators: what does a facilitator actually do, and what do I have to trust?"],"links":{"self":"https://www.superstables.com/api/v1/purchase/services/superstables-demo-specialist-research","purchase":"https://www.superstables.com/api/v1/purchases","quickstart":"https://www.superstables.com/docs/purchase.md"}},{"id":"superstables-demo-image-creation","name":"Image creation","description":"A prepared image for one of three fixed briefs, delivered as a link to a hand-drawn SVG with its dimensions, palette and alt text. Simulated service output. Payment uses test USDC on Base Sepolia.","operator":"Superstables (prepared demo service on the testnet)","simulated":true,"testnet":true,"available":true,"request":{"method":"GET","endpoint":"https://www.superstables.com/api/demo/services/image-creation","params":[{"name":"brief_id","in":"query","required":true,"description":"Which prepared brief to deliver. Each is a fixed composition for the fictional Sample Co.","enum":["launch-poster","product-icon","social-card"],"example":"launch-poster"},{"name":"style","in":"query","required":false,"description":"How the composition is treated. The sample file is rendered flat; outline is described in the notes only.","enum":["flat","outline"],"default":"flat","example":"flat"}],"unknown_params":"rejected","example_url":"https://www.superstables.com/api/demo/services/image-creation?brief_id=launch-poster"},"payment":{"protocol":"x402","x402_version":2,"scheme":"exact","network":"eip155:84532","network_label":"Base Sepolia (testnet)","asset":{"symbol":"USDC","address":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","decimals":6},"amount":{"decimal":"0.02","atomic":"20000"},"price_display":"0.02 test USDC per request","pay_to":"0xAfcd5F5C7622a5C09422A0e8FB850460bdA9E48E","max_timeout_seconds":300},"returns":{"asset_url":"string, site-relative path to the SVG","width":"number","height":"number","format":"string, always svg","alt_text":"string","palette":"[hex string]","brief":"string","variant":"\"flat\" | \"outline\"","style_notes":"string","style_note":"string"},"example_prompts":["Buy me the launch-poster image and tell me its dimensions and palette.","Get the product-icon image in the outline style and describe what it looks like."],"links":{"self":"https://www.superstables.com/api/v1/purchase/services/superstables-demo-image-creation","purchase":"https://www.superstables.com/api/v1/purchases","quickstart":"https://www.superstables.com/docs/purchase.md"}},{"id":"superstables-demo-audio-transcription","name":"Audio transcription","description":"A prepared transcript of one of three short sample audio clips: clip details, timestamped speaker-labelled segments and any action items. Simulated service output. Payment uses test USDC on Base Sepolia.","operator":"Superstables (prepared demo service on the testnet)","simulated":true,"testnet":true,"available":true,"request":{"method":"GET","endpoint":"https://www.superstables.com/api/demo/services/audio-transcription","params":[{"name":"clip_id","in":"query","required":true,"description":"Which prepared sample clip the transcript is for. These are fictional clips; there is no audio file behind them.","enum":["standup-2026-09-14","customer-call-excerpt","podcast-intro"],"example":"standup-2026-09-14"},{"name":"format","in":"query","required":false,"description":"Timestamped segments, or the whole transcript as one speaker-labelled string.","enum":["segments","text"],"default":"segments","example":"segments"}],"unknown_params":"rejected","example_url":"https://www.superstables.com/api/demo/services/audio-transcription?clip_id=standup-2026-09-14"},"payment":{"protocol":"x402","x402_version":2,"scheme":"exact","network":"eip155:84532","network_label":"Base Sepolia (testnet)","asset":{"symbol":"USDC","address":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","decimals":6},"amount":{"decimal":"0.01","atomic":"10000"},"price_display":"0.01 test USDC per request","pay_to":"0xAfcd5F5C7622a5C09422A0e8FB850460bdA9E48E","max_timeout_seconds":300},"returns":{"clip":"{ id, title, duration_seconds, language, speakers[] }","format":"string","segments":"[{ start_seconds, end_seconds, speaker, text }], when format is segments","transcript":"string, one speaker-labelled line per segment, when format is text","action_items":"string[]"},"example_prompts":["Buy a transcript of the sample clip standup-2026-09-14 and list the action items.","Get the customer-call-excerpt transcript as plain text and tell me why the payment failed."],"links":{"self":"https://www.superstables.com/api/v1/purchase/services/superstables-demo-audio-transcription","purchase":"https://www.superstables.com/api/v1/purchases","quickstart":"https://www.superstables.com/docs/purchase.md"}},{"id":"superstables-demo-product-search","name":"Product lookup","description":"A prepared product comparison for one of three fixed shopping queries under a price ceiling in EUR: fictional products with vendor, price, rating, availability, a one-line note and a best-value pick. Simulated service output. Payment uses test USDC on Base Sepolia.","operator":"Superstables (prepared demo service on the testnet)","simulated":true,"testnet":true,"available":true,"request":{"method":"GET","endpoint":"https://www.superstables.com/api/demo/services/product-search","params":[{"name":"query_id","in":"query","required":true,"description":"Which prepared shopping query to answer. The products and vendors are fictional.","enum":["usb-c-hub","standing-desk","noise-cancelling-headphones"],"example":"usb-c-hub"},{"name":"max_eur","in":"query","required":false,"description":"The price ceiling in EUR; only prepared products at or under it are returned.","enum":["50","150","400"],"default":"400","example":"400"}],"unknown_params":"rejected","example_url":"https://www.superstables.com/api/demo/services/product-search?query_id=usb-c-hub"},"payment":{"protocol":"x402","x402_version":2,"scheme":"exact","network":"eip155:84532","network_label":"Base Sepolia (testnet)","asset":{"symbol":"USDC","address":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","decimals":6},"amount":{"decimal":"0.003","atomic":"3000"},"price_display":"0.003 test USDC per request","pay_to":"0xAfcd5F5C7622a5C09422A0e8FB850460bdA9E48E","max_timeout_seconds":300},"returns":{"query":"string","filters":"{ max_eur, currency }","products":"[{ name, vendor, price_eur, rating, availability, note }]","best_value":"{ name, price_eur, reason }"},"example_prompts":["Find me a usb-c-hub for under 50 EUR and tell me which one to buy.","Compare noise-cancelling-headphones up to 400 EUR and pick the best value."],"links":{"self":"https://www.superstables.com/api/v1/purchase/services/superstables-demo-product-search","purchase":"https://www.superstables.com/api/v1/purchases","quickstart":"https://www.superstables.com/docs/purchase.md"}},{"id":"superstables-demo-job-search","name":"Job search","description":"Prepared sample job listings for one role in one region: title, company, location, salary range, requirements and how to apply. Simulated service output. Payment uses test USDC on Base Sepolia.","operator":"Superstables (prepared demo service on the testnet)","simulated":true,"testnet":true,"available":true,"request":{"method":"GET","endpoint":"https://www.superstables.com/api/demo/services/job-search","params":[{"name":"role_id","in":"query","required":true,"description":"Which prepared role to list openings for.","enum":["solidity-engineer","developer-advocate","product-designer"],"example":"solidity-engineer"},{"name":"region","in":"query","required":false,"description":"Where the listings are based: EU cities with EUR bands, US cities with USD bands, or remote-first teams in mixed currencies.","enum":["eu","us","remote"],"default":"remote","example":"remote"}],"unknown_params":"rejected","example_url":"https://www.superstables.com/api/demo/services/job-search?role_id=solidity-engineer"},"payment":{"protocol":"x402","x402_version":2,"scheme":"exact","network":"eip155:84532","network_label":"Base Sepolia (testnet)","asset":{"symbol":"USDC","address":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","decimals":6},"amount":{"decimal":"0.003","atomic":"3000"},"price_display":"0.003 test USDC per request","pay_to":"0xAfcd5F5C7622a5C09422A0e8FB850460bdA9E48E","max_timeout_seconds":300},"returns":{"role":"string","region":"string","listings":"[{ title, company, location, remote, salary_range, posted_on, requirements, apply_note }]","market_note":"string"},"example_prompts":["Buy me the sample job listings for solidity-engineer in the eu region.","Find developer-advocate openings and tell me which ones are remote."],"links":{"self":"https://www.superstables.com/api/v1/purchase/services/superstables-demo-job-search","purchase":"https://www.superstables.com/api/v1/purchases","quickstart":"https://www.superstables.com/docs/purchase.md"}},{"id":"superstables-demo-website-performance","name":"Website performance check","description":"A prepared performance report for a sample page: score, core metrics, a pass/fail against common thresholds and the top opportunities with a one-line fix each. Simulated service output. Payment uses test USDC on Base Sepolia.","operator":"Superstables (prepared demo service on the testnet)","simulated":true,"testnet":true,"available":true,"request":{"method":"GET","endpoint":"https://www.superstables.com/api/demo/services/website-performance","params":[{"name":"page_id","in":"query","required":true,"description":"Which prepared sample page to report on. These are fictional pages under sample.example, not a live site.","enum":["sample-landing","sample-checkout","sample-docs"],"example":"sample-landing"},{"name":"device","in":"query","required":false,"description":"The device class the report describes.","enum":["mobile","desktop"],"default":"mobile","example":"mobile"}],"unknown_params":"rejected","example_url":"https://www.superstables.com/api/demo/services/website-performance?page_id=sample-landing"},"payment":{"protocol":"x402","x402_version":2,"scheme":"exact","network":"eip155:84532","network_label":"Base Sepolia (testnet)","asset":{"symbol":"USDC","address":"0x036CbD53842c5426634e7929541eC2318f3dCF7e","decimals":6},"amount":{"decimal":"0.005","atomic":"5000"},"price_display":"0.005 test USDC per request","pay_to":"0xAfcd5F5C7622a5C09422A0e8FB850460bdA9E48E","max_timeout_seconds":300},"returns":{"page":"{ id, label, url }","device":"string","score":"number, 0 to 100","metrics":"{ lcp_ms, cls, inp_ms, ttfb_ms, total_bytes_kb, requests }","thresholds":"{ lcp_ms, cls, inp_ms }","checks":"{ lcp_ms, cls, inp_ms, overall }, each \"pass\" or \"fail\"","opportunities":"[{ title, estimated_savings_ms, fix }]"},"example_prompts":["Buy a performance check of sample-checkout on mobile and tell me what is slowing it down.","Get the website performance report for sample-landing on desktop."],"links":{"self":"https://www.superstables.com/api/v1/purchase/services/superstables-demo-website-performance","purchase":"https://www.superstables.com/api/v1/purchases","quickstart":"https://www.superstables.com/docs/purchase.md"}}]}