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Add Mida plugin - #273

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donaldng:add-mida-plugin
Open

Add Mida plugin#273
donaldng wants to merge 5 commits into
cursor:mainfrom
donaldng:add-mida-plugin

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@donaldng

@donaldng donaldng commented Aug 27, 2026

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What this adds

Mida — an A/B testing and personalization platform. A JavaScript tag on the customer's site assigns visitors to variants and reports conversions; this plugin connects Cursor to that account so the whole loop — build a test, launch it, read the result, conclude it, serve the winner — happens without leaving the code the test is changing.

Vendored at third_party/mida/, following the intercom / similarweb layout.

  • 1 MCP server: https://mcp.mida.so/mcp (hosted, type: http, OAuth)
  • 2 skills
Skill Covers
mida Project selection, reading Bayesian "chance to beat original" vs. frequentist p-values, and the order of operations for concluding a test and serving a winner
mida-experiments The workflow: hypothesis → variants → goal → preview → launch → call the result

The skills exist because a few Mida behaviours are easy to get wrong from the tool schemas alone — an experiment's display number is not its API id, a concluded test stops serving even while its status still reads active, and setting a test's status clears a conclusion written before it. Each is documented with the correct sequence.

Checks

  • node scripts/validate-plugins.mjsAll plugins validated successfully. (Node 20, ajv + ajv-formats, same as CI)
  • Entry added to .cursor-plugin/marketplace.json; row added to the README table.
  • category: integrations, author Mida, MIT licensed.

Network and credentials

https://mcp.mida.so/mcp is the only host this plugin contacts; it reaches Mida's API server-side. Auth is OAuth to the user's own Mida account, handled by the MCP client — no API keys, no environment variables, no local credential files. The server advertises spec-compliant discovery (WWW-Authenticate/.well-known/oauth-protected-resource/mcp), dynamic client registration, and PKCE S256.

No local execution: no hooks, commands, or scripts — one remote MCP server plus Markdown skills.

Ownership

I'm the founder of Mida and maintain the MCP server. The same plugin content is published under our org at mida-so/mida-grok-plugin — happy to relicense, rename, or restructure if you'd prefer a different shape here.

🤖 Generated with Claude Code


Note

Low Risk
Additive marketplace entry and vendored plugin content only; auth and API calls go through the remote MCP server like other third-party integrations.

Overview
Adds the Mida third-party plugin at third_party/mida-so/ and registers mida-so in .cursor-plugin/marketplace.json and the root README plugin table.

The plugin wires Cursor to Mida’s hosted HTTP MCP server (https://mcp.mida.so/mcp, OAuth) and ships two agent skills—mida (project scoping, reading results, conclude/serve ordering) and mida-experiments (hypothesis → launch → call workflow). Also includes manifest, mcp.json, docs, MIT license, and logo; no local hooks or scripts.

Reviewed by Cursor Bugbot for commit 77012a8. Bugbot is set up for automated code reviews on this repo. Configure here.

donaldng and others added 5 commits August 27, 2026 17:25
Mida is an A/B testing and personalization platform. Vendors the hosted Mida
MCP server (mcp.mida.so, OAuth) with two skills covering project selection,
result interpretation, and the experiment workflow.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Tagline and logo-consistent wording in the README, backlinks to mida.so,
app.mida.so and the API docs, and a link to the plugin source repo. Removed
em-dashes throughout, per Mida copy style.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
mida.so/mcp now carries the server URL, per-client setup, and the OAuth
flow, so it is a better landing spot than the marketing homepage.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
"mida" collides with several unrelated projects across these catalogs
(geekmidas, midasflow, vornicx-midas, codespar-midaz). mida-abtesting is
unambiguous and says what the plugin does. Display name stays "Mida".

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Matches the GitHub org and repo prefix. Display name stays "Mida".

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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