Side by side
Methods are deliberately fewer than catalog tools: one method aggregates every
endpoint with the same capability, and only operations whose contract and
normalized output can be kept stable are promoted. See
Why fewer methods than catalog tools.
When to use which
Reach for a Scenario Method when the capability is covered and you will parse the result in code: searching posts on a platform, fetching a product or a quote, scraping a page into markdown. You get one schema to code against, failover you don’t have to build, and a price you can budget. Reach for the catalog when you need an operation the methods don’t expose — a niche endpoint, a parameter only one provider has, a platform that has no method yet — or when the caller is an LLM that can read a tool description and adapt. The catalog is where every new provider appears first.What’s the same
- One key. The
ak_...master key authenticates both. - One balance. Credits are shared;
agentkey_accountreports it for both. - One set of providers. A Scenario Method is a contract on top of the same catalog tools; describe shows which tool each provider binding calls.
Scenario Methods
The REST surface: contract, routing, pricing, errors.
Discover → Describe → Execute
How agents use the catalog through MCP.