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Dev.to
5/11/2026
MCP Solved Tool Access. Tool Selection Is Still Unsolved

MCP Solved Tool Access. Tool Selection Is Still Unsolved

Short summary

MCP solved how agents access tools, but selecting the right ones from thousands is still a problem. ToolCairn, an MCP server, helps agents choose optimal tool combinations by querying a graph of 35+ open-source registries, checking version compatibility, decomposing requirements into composable stacks, and learning from real outcomes. It addresses tool overload, wrong library picks, and version drift in multi-tool agent workflows.

  • •MCP standardized tool access for agents; selecting the right tools remains unsolved
  • •ToolCairn is an MCP server that recommends compatible tool stacks via a cross-registry graph
  • •It addresses tool overload, wrong picks, version conflicts, and learns from usage outcomes

Generated with AI, which can make mistakes.

#ai-agents#ai-tools#open-source#product-launch
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