feat: add unofficial Codex plugin surface - #96
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Expose the Slack skills to Codex via a new .codex-plugin/plugin.json manifest and a repo-scoped .agents/plugins/marketplace.json for local installation. sync_versions.py now keeps the Codex manifest version in lockstep with the other plugin surfaces, and the maintainers guide documents how to test in Codex. The hosted MCP server is not yet wired into the Codex surface; this ships the skills only for now. Co-Authored-By: Claude <svc-devxp-claude@slack-corp.com>
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Replace the placeholder metadata in .codex-plugin/plugin.json, where description, shortDescription, and longDescription were all the same generic sentence. Give each field distinct, capability-accurate copy following Codex's documented field semantics, and point homepage at the publisher docs hub (docs.slack.dev) and websiteURL at the official Slack MCP server docs page. Co-Authored-By: Claude <svc-devxp-claude@slack-corp.com>
Set an empty mcpServers object in .codex-plugin/plugin.json so Codex does not fall back to reading the repo-root .mcp.json, which would silently load the Slack MCP server under Claude Code's OAuth client ID. Add the required interface.defaultPrompt so the manifest passes Codex's plugin validator, and rewrite the install-surface copy to describe the skills rather than an MCP server that isn't wired into this surface. Align the dev marketplace category with the manifest (Productivity). Co-Authored-By: Claude <svc-devxp-claude@slack-corp.com>
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Summary
Adds unofficial Codex support to this plugin by exposing the Slack skills through a Codex plugin surface. This mirrors the existing Claude Code and Cursor surfaces.
.codex-plugin/plugin.jsonmanifest that exposes the skills to Codex, version-matched to the other plugin manifests.scripts/sync_versions.pynow keeps the Codex manifest version in lockstep withpackage.json, the Claude, and Cursor manifests.The hosted MCP server is not yet wired into the Codex surface, this ships the skills only for now.
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Test plan
codex plugin marketplace add ./thencodex plugin add slack@slack-devinstalls the plugin from a local checkout$block-kit)make lint/make typecheck/make test-unitpass🤖 Generated with Claude Code