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Add USMail.ai plugin - #429

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USMailAI wants to merge 2 commits into
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usmail-ai:add-usmail-plugin
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USMailAI wants to merge 2 commits into
cursor:mainfrom
usmail-ai:add-usmail-plugin

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@USMailAI

@USMailAI USMailAI commented Sep 25, 2026 •

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Adds the USMail.ai third-party plugin under third_party/usmail/.

USMail.ai lets an agent in Cursor prepare print-to-mail jobs through the production MCP server at https://app.usmail.ai/mcp (OAuth, no API key). The agent uploads the letter and recipients, configures the job, and generates a proof. A human funds the meter and approves production on the app.

Source: https://github.com/usmail-ai/usmail-cursor-plugin (v0.2.0, MIT)

Files

  • third_party/usmail/.cursor-plugin/plugin.json
  • third_party/usmail/mcp.json
  • third_party/usmail/README.md
  • third_party/usmail/LICENSE
  • third_party/usmail/CHANGELOG.md
  • third_party/usmail/assets/logo.svg
  • third_party/usmail/skills/usmail-mcp/SKILL.md
  • .cursor-plugin/marketplace.json entry (usmail, third_party/usmail)
  • Root README.md table row

Validation: node scripts/validate-plugins.mjs passes (All plugins validated successfully.).

Website: https://www.usmail.ai


Note

Low Risk
Additive third-party plugin and marketplace listing only; no changes to core repo logic beyond registration and bundled integration assets.

Overview
Adds USMail.ai as a new third-party Cursor integration so agents can prepare print-to-mail jobs (upload, recipients, print options, proof) via an HTTP MCP server at https://app.usmail.ai/mcp with OAuth (no API keys in the repo).

The change ships third_party/usmail/ (manifest, mcp.json, usmail-mcp skill, docs, MIT license, logo) and registers usmail in .cursor-plugin/marketplace.json plus the root README plugin table. The skill enforces a human-in-the-loop flow: meter funding and production approval stay on the app unless the user explicitly opts into a capped postage spend grant after proof review.

Reviewed by Cursor Bugbot for commit 951f78b. Bugbot is set up for automated code reviews on this repo. Configure here.

cursoragent and others added 2 commits September 25, 2026 13:14
List USMail.ai v0.2.0 in the marketplace. The plugin prepares print-to-mail through the production MCP at https://app.usmail.ai/mcp; a human funds the meter and approves production on the app.

Co-authored-by: broadstrokeinc <broadstrokeinc@users.noreply.github.com>
Co-authored-by: USMail AI <USMailAI@users.noreply.github.com>
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2 participants