Evenpost

Do you evenpost enough?

Evenpost lets your AI agent draft posts and threads for X (Twitter) from the work you are already doing. Your agent writes the draft, attaches photos, checks the length and link cost, and asks you to look. You verify each post in your app before anything is posted. This plugin gives your agent the Evenpost tools and seven writing skills, and it works in Claude, Codex, Cursor and Grok Build.

Say /evenpost this (in Codex, $evenpost) and the agent turns what you are working on into a draft and sends it to Evenpost.

What it sends, and where

• The plugin connects your agent to the Evenpost server at https://beta.evenpost.app/mcp (beta).
• Your agent sends only what it drafts: the text of a post or thread, photos you attach, and requests such as "list my drafts".
• You sign in with your Evenpost account the first time the plugin connects. Evenpost needs an invite while it is in beta: join the waitlist.
• Your agent drafts and asks for approval. Today you approve, queue and post each one in the Evenpost app on your phone or the web; approving from inside the app you're already using is coming next.
• The plugin has no code, no scripts and no hooks. It contains manifests, skills and one connection address.

Skills

Skill	What it does
evenpost	/evenpost this turns your work into a draft and sends it to Evenpost for your approval.
write-tweet	Drafts a single post, checks length and link cost, hands it to you.
write-thread	Drafts an X thread, one claim per tweet, hands it to you.
hook-lab	Generates and ranks opening lines from 8 structures.
research-brief	Turns a topic into a sourced fact table and three post angles.
style-guide	Writes a one-page style guide and a pre-approval checklist.
voice-capture	Builds a short voice profile from posts you paste in.

The skills are MIT licensed.

Install

Claude on the web, Desktop and mobile

1. Open Customize > Plugins.
2. Add the marketplace ncdrone/evenpost-plugin.
3. Install Evenpost, then sign in when Claude asks you to connect.

You can also upload the zip from the latest GitHub release with Upload plugin.

Claude Code

/plugin marketplace add ncdrone/evenpost-plugin
/plugin install evenpost@evenpost

Then run /mcp to sign in. The skill is /evenpost:evenpost.

OpenAI Codex and ChatGPT

codex plugin marketplace add ncdrone/evenpost-plugin

Then open /plugins in Codex, install Evenpost and start a new session. The skill is $evenpost. The ChatGPT plugin directory listing comes after the production release.

Cursor

The repository is a Cursor plugin (.cursor-plugin/plugin.json). A Cursor Marketplace listing is pending review. Until then, add the server to ~/.cursor/mcp.json:

{ "mcpServers": { "evenpost": { "url": "https://beta.evenpost.app/mcp" } } }

and copy the folders in skills/ into your Cursor skills folder.

Grok Build

The repository carries .mcp.json, skills/ and .grok-plugin/plugin.json, the layout the xAI plugin marketplace expects. Until the marketplace entry is merged, add the server yourself:

grok mcp add --transport http evenpost https://beta.evenpost.app/mcp

and copy the folders in skills/ to ~/.grok/skills/.

Any other agent

Add a remote MCP server with the URL https://beta.evenpost.app/mcp (Streamable HTTP, sign in with OAuth).

Beta and production

Version 0.1.0 is a beta and points at https://beta.evenpost.app/mcp. Version 1.0.0 will point at the production server instead. Reconnect once after you update.

Maintainers

Everything is one tree. Hosts read their own manifest and ignore the rest:

File	Read by
.claude-plugin/plugin.json, .claude-plugin/marketplace.json	Claude (claude.ai, Desktop, mobile, Claude Code); Codex also reads the marketplace file
plugin.json, mcp.json	OpenAI Codex and ChatGPT (portable Agent Plugin format, Streamable HTTP, OAuth with dynamic client registration)
.agents/plugins/marketplace.json	Codex repo marketplace
.cursor-plugin/plugin.json	Cursor
.grok-plugin/plugin.json, .mcp.json	Grok Build; .mcp.json is also the Claude and Cursor server file
skills/	All hosts. Front matter stays name and description only, because claude.ai rejects other keys

Rules: no bin/, no hooks, no scripts the hosts run, no secrets, no CLAUDE.md at the root. Skill text is copied unchanged from the Evenpost skills source; set EVENPOST_SKILLS_DIR to a checkout of it and the check compares them.

Check before every commit and in CI:

node scripts/check.mjs
npm test
claude plugin validate .

scripts/check.mjs fails unless all manifests agree on name, version, description and MCP URL, every folder in skills/ is listed in this README, and the URL matches the major version (0.x uses beta, 1.x and later use https://my.evenpost.app/mcp).

Release: change the version in all four plugin manifests and package.json, run the checks, tag vX.Y.Z and publish a GitHub release with a zip. The xAI marketplace entry pins a 40-character commit SHA, so each release is a tag plus a one-line pull request to xai-org/plugin-marketplace.

Flip to production (v1.0.0): set the URL in .mcp.json and mcp.json to https://my.evenpost.app/mcp, update the URL in this README, bump the version, run the checks, tag. Directory submissions go in only with the production URL.

Formats were confirmed against these pages on 2026-11-11:

• Claude plugin manifest: https://code.claude.com/docs/en/plugins-reference
• Claude marketplace: https://code.claude.com/docs/en/plugin-marketplaces
• Claude plugin MCP servers: https://code.claude.com/docs/en/mcp
• OpenAI Codex plugin package, plugin.json, mcp.json, marketplaces: https://developers.openai.com/codex/plugins/build
• OpenAI listing fields and limits: https://developers.openai.com/plugins/deploy/submission
• Cursor plugins: https://cursor.com/docs/plugins and https://cursor.com/docs/reference/plugins
• Cursor marketplace example: https://github.com/cursor/plugin-template
• xAI Grok Build plugin marketplace: https://github.com/xai-org/plugin-marketplace
• xAI Grok Build MCP servers: https://docs.x.ai/build/features/mcp-servers

X is a trademark of X Corp. Evenpost is not affiliated with X Corp. MIT licensed.