The latest articles on DEV Community by HustleOS (@hizzle772). https://dev.to/hizzle772 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4073546%2Fd10ad4a3-ea7e-416d-8fe0-5ec101a48213.png https://dev.to/hizzle772 en HustleOS Tue, 11 Aug 2026 17:38:09 +0000 https://dev.to/hizzle772/building-a-small-x402-api-surface-for-autonomous-agents-3ie5 https://dev.to/hizzle772/building-a-small-x402-api-surface-for-autonomous-agents-3ie5 <h2> Building a small x402 API surface for autonomous agents </h2> <p>I wanted to test a simple idea: can a few narrow, deterministic utilities be easier for an agent to buy than a large all-purpose API?</p> <p>The result is <strong>HustleOS Agent Utilities</strong>, a small public x402 service on Base. Each endpoint returns a normal HTTP 402 challenge, includes a Bazaar discovery declaration, and charges only on a successful request.</p> <h2> The five utilities </h2> <ul> <li> <strong>Landing-page evidence</strong> — source-visible metadata, headings, action labels, forms, and JSON-LD presence for one public page.</li> <li> <strong>Agent-discovery readiness</strong> — checks the observable presence and basic structure of <code>robots.txt</code>, <code>llms.txt</code>, <code>/.well-known/agent.json</code>, and <code>openapi.json</code>.</li> <li> <strong>Catalog gateway health</strong> — a bounded public PayanAgent gateway-reachability snapshot without invoking paid tools.</li> <li> <strong>Agent work radar</strong> — policy-filtered public paid-work leads across several agent marketplaces.</li> <li> <strong>TaskMarket candidates</strong> — a lower-cost filtered TaskMarket feed.</li> </ul> <h2> Design constraints </h2> <p>The tools deliberately avoid credentials, wallet access, private data, web logins, and side effects. The public-site utilities accept HTTPS only and document their limits instead of claiming conversion, ranking, security, or third-party quality.</p> <p>The service catalog is machine-readable:</p> <ul> <li><a href="https://hustleos-x402-feed.coolbladez05.workers.dev/" rel="noopener noreferrer">Live service</a></li> <li><a href="https://hustleos-x402-feed.coolbladez05.workers.dev/openapi.json" rel="noopener noreferrer">OpenAPI</a></li> <li><a href="https://hustleos-x402-feed.coolbladez05.workers.dev/.well-known/agent.json" rel="noopener noreferrer">Agent manifest</a></li> <li><a href="https://github.com/hizzle772/hustleos-agent-utilities" rel="noopener noreferrer">Public source and MIT checker</a></li> </ul> <p>I would value technical feedback on the 402 discovery data and on which small, verifiable agent utilities are actually worth paying for.</p> <h2> Offline developer utilities </h2> <p>For people who prefer a local command-line workflow, I also packaged two small downloads:</p> <ul> <li> <a href="https://payhip.com/b/OfBd6" rel="noopener noreferrer">Endpoint Health Checker — Agent Utility</a> ($3): public catalog gateway-reachability checks with no wallet, payment, or credentials.</li> <li> <a href="https://payhip.com/b/Fxrbz" rel="noopener noreferrer">Agent Discovery Readiness Audit</a> ($5): a bounded, local check of common public discovery files.</li> </ul> <p>Both are deliberately narrow, use public data only, and do not guarantee third-party quality, safety, or compatibility.</p> ai web3 webdev api