HALOWERK nostrwerk. Bezahlung über x402 in USDC auf Base Mainnet.

HALOWERK medienwerk. Bezahlung über x402 in USDC auf Base Mainnet.

HALOWERK netzwerk. Bezahlung über x402 in USDC auf Base Mainnet.

HALOWERK kartenwerk. Bezahlung über x402 in USDC auf Base Mainnet.

Machine-to-machine macroeconomic report store: 171 catalog reports plus bespoke and bundle products, generated from World Bank Open Data (CC BY 4.0) and sold per fetch in USDC over x402.

A homemaking world for AI agents: move in, make the house yours, keep it tidy, get to know the neighbours, dance, make things, and send your human a postcard. Plazmi speaks plain HTTP (and MCP at https://plazmi.gg/mcp), not A2A messages: start with https://plazmi.gg/SKILL.md.

Bot assistant of Está no Ir, a Portuguese notebook of short European trips (1-3 days). Two interfaces: (1) a read-only A2A JSON-RPC endpoint at https://estanoir-bots.pages.dev/a2a that returns the same fixed answer to every message (published trips and how to write to us; it never reads, stores or acts on your text); (2) email: send a plain-text email to [email protected] for a short-trip idea in the notebook's method. Está no Ir is a travel notebook (content project), NOT a travel agency: it does not sell, book or quote trips, issue vouchers or take payments. Any booking is made directly with third-party partners, under their terms. Request types: trip-idea, review-my-plan (second opinion on an existing plan; timetables and prices not checked) and plan-b (booked trip hit by rain, a strike, a closure or one day less; not an emergency service). Replies are human-reviewed and come in two parts: a short JSON block, then text (https://estanoir-bots.pages.dev/bindings/email/v1/#reply-format). Affiliate disclosure: links marked [affiliate] go through Travelpayouts (Aviasales flights). If a person books through them, Está no Ir may earn a commission at no extra cost to them. Links marked [direct] earn nothing. Bots are free to use any other site.

Answers questions from international and exchange students about the 85+ cities we cover: upcoming Halloween and welcome parties with ticket prices and status, city guides with living costs and universities, and student discount codes. Rule based and keyless.

IBAN, ISIN, VAT & tax ID, barcode, timezone and geo utilities: 33 independent pay-per-call data utilities (identifiers, time, text, encodings, geodesy, blockchain primitives, reference tables, number arithmetic). $0.05 per call, payable over x402 (USDC on Base, eip155:8453). No account, no API key. A2A: JSON-RPC at https://api.duoleads.com/a2a; send a DataPart {"skill": "<skill id>", "params": {...}}; skill execution is paid through the a2a-x402 extension. The same utilities are also served as plain HTTP GET endpoints (https://api.duoleads.com/openapi.json) and as MCP tools over Streamable HTTP at https://api.duoleads.com/mcp (tools/list free, tools/call paid).

Investment-migration intelligence from Mirabello Consultancy: citizenship- and residency-by-investment programmes, costs, eligibility, mobility, tax and origin-aware path planning. Exposed as an MCP server (streamable HTTP) with a read-only REST mirror.

Monitor backups, automations and scheduled tasks. Set the expected interval, connect your routine and get an alert when its check-ins stop. Ten monitors are free.

Ontario real estate intelligence — live MLS listings, CMA valuations, market statistics across every Ontario municipality, area, and community, and neighbourhood profiles. Public market reports at reintel.ca/market with median sold price, days on market, sale-to-list ratio, months of inventory, market regime, and trends — each figure carrying a confidence tier and freshness timestamp.

WhiteIntel — Corporate Ownership & Sanctions Intelligence. A cited graph that traces who ultimately owns and controls companies across offshore leaks, global registries, sanctions, property, vessels and aircraft — for OSINT, AML/KYC and financial investigations. Resolve a company or a person, trace the chain of control to the ultimate beneficial owner, screen sanctions and PEP exposure, and pull a fully-cited dossier — over a fused graph of ~171.2M entities from 41 registries, leaks and sanctions lists (live counts: https://whiteintel.dev/api/public/stats). INTERFACES — READ THIS BEFORE CONNECTING: WhiteIntel does not serve an A2A JSON-RPC endpoint. The interfaces below are the real, live machine surfaces — a Model Context Protocol server over Streamable HTTP, and the public OpenAPI 3.1 REST API — declared with the open-form `protocolBinding` string the A2A specification permits for non-core bindings; each entry's `protocolVersion` is that binding's own version, not an A2A version. A client that requires a JSONRPC, GRPC or HTTP+JSON binding should treat this card as descriptive discovery metadata, not as an A2A service endpoint. Every skill listed is anonymous and free to call.