Practices for building software with coding agents, each with a test you check on your repo.

A real inbox for AI agents: send, receive and thread email, behind a prompt-injection firewall.

Track Australian work-related tax deductions: expenses, assets, car trips and work-from-home days.

Verify a company before paying it: OFAC sanctions, UK/Canada registries, contractor licences (x402)

Security basics of a website: HTTPS certificate, redirection, headers, mixed content, DNS filtering.

Brazilian deals: search active promos, coupons and price history from Brazilian online stores.

Your vocabulary notebook: save, browse, edit and practise your own words with spaced repetition.

Official economic and demographic figures for a country, with IMF projections and World Bank data.

Turn assistant output into ready-to-send action links and files, with no sign-in.

Search your private marketing email archive and organize collections with optional write access.

Human-only capabilities for AI agents: ground truth, verification, judgement and real-world action.

Verified Swiss company profiles for AI agents: search, read and contact firms via allowed actions.

Cited supplement evidence, biomarker effects, interaction checks and brand quality

Translate text inside images while preserving layout; OCR extraction. Free API key.

Marketing data and actions for AI agents: GA4, Search Console, ads, social, SEO and WordPress.

Read Twelfth workspace products, sales, inventory, suppliers, pricing, projects and actions.

Organize and track your Magic: The Gathering collection, decks, prices and imports.

Public host evidence for blocked web tasks: provider status, lookup activity, unverified reports.

Pay-per-call checks for AI agents: sanctions, MiCA, French KYB, AI Act. USDC via x402.

Paid web research, fact-check, page summary and extraction for AI agents (USDC via x402).

US pre-construction land-use filings, alerts, lists, and exports.

Search Brazil's public tenders, check company sanctions and find catalog codes on Olhary.

AI visibility (GEO): how ChatGPT, Gemini and Google AI talk about your brand, with an action plan.

Open-source CRM for AI agents: humans, orgs, interactions, deals, tasks, links and an activity log.