Add ctok - Claude token estimator extension

[KP-MobileTechie]

Summary

Adds the ctok extension - a Claude token estimator for Zed.

• Estimates token count and cost for any text or current file
• Refines prompts to reduce tokens while preserving intent
• Scans a project directory and reports token usage by file

Extension details

• ID: ctok
• Version: 0.1.0
• Repository: https://github.com/ctok-cli/ctok-zed
• License: MIT

Slash commands provided

Command	Description
/ctok-check	Estimate token count and cost
/ctok-refine	Refine a prompt to reduce tokens
/ctok-scan	Scan project directory for token usage

Checklist

• Extension has a valid extension.toml at the repo root
• Extension compiles against zed_extension_api = "0.2"
• Repository is public
• Submodule added to extensions/ctok

[cla-bot]

We require contributors to sign our Contributor License Agreement, and we don't have @KP-MobileTechie on file. You can sign our CLA at https://zed.dev/cla. Once you've signed, post a comment here that says '@cla-bot check'.

[cla-bot]

We require contributors to sign our Contributor License Agreement, and we don't have @KP-MobileTechie on file. You can sign our CLA at https://zed.dev/cla. Once you've signed, post a comment here that says '@cla-bot check'.

[cla-bot]

We require contributors to sign our Contributor License Agreement, and we don't have @KP-MobileTechie on file. You can sign our CLA at https://zed.dev/cla. Once you've signed, post a comment here that says '@cla-bot check'.

[KP-MobileTechie]

Hi, I'm unable to sign the CLA at zed.dev/cla - my account is blocked from signing up (Cloudflare error: 'This account is blocked from signing up'). I've emailed billing-support@zed.dev to get it resolved. Could a maintainer manually approve the CLA for GitHub user KP-MobileTechie? Thanks.

[cla-bot]

We require contributors to sign our Contributor License Agreement, and we don't have @KP-MobileTechie on file. You can sign our CLA at https://zed.dev/cla. Once you've signed, post a comment here that says '@cla-bot check'.

[KP-MobileTechie]

Hey team! Just wanted to give a heads-up on the changes I made since the original submission:

The initial version used slash commands, but I saw those have been deprecated and are no longer accepted. So I rewrote the extension to use an MCP context server instead - it now launches @ctok/mcp (the ctok MCP server) which exposes the check, refine, and scan tools directly in the Agent Panel.

Also bumped the version to 0.2.0 to reflect the new approach. All CI checks are passing now. Let me know if you have any feedback!