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Exposing lineHeight tokens in MCP & adding color to token conversion - #7601

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mcp-design-token-updates
Mar 3, 2026
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Exposing lineHeight tokens in MCP & adding color to token conversion#7601
lukasoppermann merged 9 commits into
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mcp-design-token-updates

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@lukasoppermannlukasoppermann commented Feb 26, 2026

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This provides better info for AI when no shortcut for text is available and it needs to compose it from individual css variables

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CopilotAI review requested due to automatic review settings February 26, 2026 15:27
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🦋 Changeset detected

Latest commit: 662f475

The changes in this PR will be included in the next version bump.

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Pull request overview

This PR enhances the Primer MCP (Model Context Protocol) server to better expose lineHeight design tokens to AI tools. The MCP server helps AI agents understand and use Primer's design system, and this change ensures AI tools can properly compose typography using individual CSS variables when shorthand tokens aren't available.

Changes:

  • Added three new search aliases for lineHeight tokens ('line-height', 'lineheight', 'leading') to the GROUP_ALIASES map
  • Updated the typography shorthand rule documentation to include fallback guidance for using individual tokens (font-size, font-family, line-height) when component-specific shorthands don't exist
  • Enhanced the text group hint to emphasize using lineHeight tokens instead of raw numeric values when splitting typography properties

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github-actionsBot requested a deployment to storybook-preview-7601 February 26, 2026 15:36 Abandoned
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github-actionsBottemporarily deployed to storybook-preview-7601 February 26, 2026 15:46 Inactive
@lukasoppermannlukasoppermann added the integration-tests: skipped manually Changes in this PR do not require an integration test label Feb 26, 2026
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github-actionsBottemporarily deployed to storybook-preview-7601 February 26, 2026 21:23 Inactive
@lukasoppermannlukasoppermann changed the title Exposing lineHeight tokens in MCPExposing lineHeight tokens in MCP & adding color to token conversionFeb 27, 2026
github-advanced-security[bot]
github-advanced-securityAI found potential problems Feb 27, 2026
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Comment threadpackages/mcp/src/server.ts Fixed
@lukasoppermann
lukasoppermann requested review from siddharthkp and removed request for hectahertzFebruary 27, 2026 10:08
@lukasoppermann@github-advanced-security
Potential fix for code scanning alert no. 16: Incomplete string escap…
7cf7e1d
…ing or encoding
Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
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github-actionsBot requested a deployment to storybook-preview-7601 February 27, 2026 10:11 Abandoned
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🤖 Lint issues have been automatically fixed and committed to this PR.

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@lukasoppermann
lukasoppermann added this pull request to the merge queueMar 3, 2026
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Merged via the queue into main with commit e103951Mar 3, 2026
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@lukasoppermann
lukasoppermann deleted the mcp-design-token-updates branch March 3, 2026 14:18
@primerprimerBot mentioned this pull request Mar 3, 2026
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llastflowers pushed a commit that referenced this pull request Mar 3, 2026
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Exposing lineHeight tokens in MCP & adding color to token conversion (#…
b0e77ac
…7601)
Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
Co-authored-by: primer[bot] <119360173+primer[bot]@users.noreply.github.com>
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