Vellium & Co Testing Lab
Independent checks of paid x402 data sellers and of AI-agent access to shopping and travel sites
| Endpoint | https://velliumandco.com/mcp (streamable-http) |
|---|---|
| Registry version | 1.0.0 |
| Now | 9 tools · grade B (88) · pin ts_7368f765a9c3e32f34e69af3028fb814 · protocol 2025-06-18 |
| First / last listed | 2026-11-02 02:10 UTC / 2026-11-02 02:10 UTC |
| Grade over time | 2026-11-02: B (88), 9 tools |
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Tools: search_sellers check_seller sellers_on_domain list_categories check_website batch changes find_route list_websites
search_sellers | Find paid x402 data services AI agents can buy, inside one category, ranked. Use before paying any seller. params: category*, q, max_price, min_buyers, answering, sort, tools_honoured, min_accuracy, limit, cursor |
check_seller | Our latest independent check of one paid seller, by its address (any spelling) or id: answering, price, buyers, and its paid answers checked against an independent record (with proof). params: resource, id |
sellers_on_domain | Every paid seller we check on one host. params: domain*, limit |
list_categories | Every category of paid service agents buy, with sellers, buyers and how we check it; names in your language with lang. params: lang |
check_website | Can AI agents use this shopping or travel website? Plain-agent access, each AI agent at the door, robots rules, llms.txt, history. params: domain* |
batch | Check up to 25 sellers and 25 websites in one call (cheapest for many checks). params: sellers, websites |
changes | What changed since a day — keep a local copy in sync. params: since |
find_route | Where to go for a job, before you spend tokens on trial and error: the best tested free official source with its exact call and how much it returns (and a fallback). Ask in plain words, e.g. 'UK company directors', 'Apple revenue', 'EU gas storage'. detail=full adds the paid sellers we rate and other sources. params: q*, country, detail |
list_websites | Rated websites, filtered by market (e.g. 'United States', 'Japan'), plain-agent outcome (open, blocked, timeout) or price honesty (does the price agents read match what people see). params: prices, market, plain_agent, limit, cursor, detail |
Entries describe changes in tool definitions. They are not statements about a server, its quality or its author. The grade measures how the tool definitions fit model providers (token cost, schema compatibility, confusable names) as scored by the ToolFit engine at the time of the listing. JSON: append .json. Opt-out: how or hello@youraitools.co.