Agent stacks
Curated MCP server picks for common agent patterns — each stack links to a live LLM API cost estimate. This is not a full registry; we optimize for decisions, not volume.
Large directories list hundreds of servers. We list the ones that show up in production agent stacks — and show what the LLM layer costs for that workload.
Curated servers…
Registry synced…
Agent patterns6
Loading stacks…
mcp_selection_rules.json and enriched from the
official MCP Registry
when a pin has a published registry entry ( synced).
Official monorepo servers not yet published to the registry keep static metadata from our pins.
Verify each repo before production use.
Cost estimates use the same OpenRouter pricing pipeline as the calculator.