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Jonathan Camp 1ea2f2f02c
agent: Sanitize MCP server IDs in tool name disambiguation (#45789)
Release Notes:

- Fixed an issue where a request could fail if an MCP server with names
containing whitespace was used

## Summary

When multiple MCP servers expose tools with the same name, Zed
disambiguates them by prefixing the tool name with the server ID from
settings.json. If the server ID contains spaces or special characters
(e.g., `"Azure DevOps"`), the resulting tool name like `Azure
DevOps_echo` violates Anthropic's API pattern `^[a-zA-Z0-9_-]{1,128}$`,
causing API errors:

> "Received an error from the Anthropic API: tools.0.custom.name: String
should match pattern '^[a-zA-Z0-9_-]{1,128}$'"

## Solution

Convert server IDs to snake_case (using the `heck` crate already
available in the workspace) before using them as prefixes during tool
name disambiguation.

| Server ID in settings.json | Disambiguated Tool Name |
|---------------------------|------------------------|
| `"Azure DevOps"` | `azure_dev_ops_echo` |
| `"My MCP Server"` | `my_mcp_server_echo` |

## Test plan

- [x] Added test case for server name with spaces ("Azure DevOps") in
`test_mcp_tool_truncation`
- [x] Verified existing tests pass
- [x] Manually tested with two MCP servers having overlapping tool names

After (left), Before (right):

<img width="2880" height="1800" alt="Screenshot_20251228_163249"
src="https://github.com/user-attachments/assets/09c4e8f0-e282-4620-9db3-3e2c7d428d15"
/>


🤖 Generated with (some) help from [Claude
Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: Bennet Bo Fenner <bennetbo@gmx.de>
2026-02-12 14:43:14 +00:00
.cargo ci: Update typos versions and fix new occurrences (#40784) 2025-10-21 10:43:22 +00:00
.cloudflare docs: Document context servers (#21170) 2024-11-25 11:05:14 -05:00
.config git: Side-by-side diff UI (#47349) 2026-01-22 02:31:14 -05:00
.factory/prompts/docs-automation docs: Automatic Documentation Github Action using Droid (#45374) 2025-12-19 11:19:12 -06:00
.github Revert "ci: Use cargo-mtime to track timestamps" (#48987) 2026-02-12 00:08:46 +00:00
.zed gpui: Rewrite Windows PlatformTextSystem for better performance (#48087) 2026-02-01 13:32:22 +01:00
assets settings: Add ability to select audio input/output devices for collab (#49015) 2026-02-12 14:27:55 +01:00
ci Move Nightly release to gh-workflow (#41349) 2025-10-28 13:57:23 -06:00
crates agent: Sanitize MCP server IDs in tool name disambiguation (#45789) 2026-02-12 14:43:14 +00:00
docs bedrock: Enable 1M context window (#48542) 2026-02-12 14:32:24 +00:00
extensions extension_ci: Merge extension workflow files into one file (#48810) 2026-02-09 21:18:53 +01:00
legal Fix the markdown table (#38729) 2025-09-23 16:49:45 +00:00
nix nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
script Remove unnused line from bundle-mac (#48972) 2026-02-11 21:33:01 -07:00
tooling Revert "ci: Use cargo-mtime to track timestamps" (#48987) 2026-02-12 00:08:46 +00:00
.git-blame-ignore-revs Add PR 15352 to .git-blame-ignore-revs (#30870) 2025-05-17 11:35:58 +00:00
.gitattributes windows: Make sure zed.sh using the correct line ending (#37650) 2025-09-05 16:25:55 +00:00
.gitignore docs: Improve Git documentation accuracy and structure (#47419) 2026-01-23 08:43:24 -08:00
.mailmap Update .mailmap (#47413) 2026-01-22 23:57:26 +05:30
.prettierrc ci: Add check for formatting default.json (#30034) 2025-05-06 18:55:26 +00:00
.rules Remove -q from .rules (#46670) 2026-01-13 03:03:30 +00:00
AGENTS.md ai: Symlink an AGENTS.md file to .rules (#45939) 2026-01-19 15:29:42 +01:00
Cargo.lock agent: Sanitize MCP server IDs in tool name disambiguation (#45789) 2026-02-12 14:43:14 +00:00
Cargo.toml settings: Add ability to select audio input/output devices for collab (#49015) 2026-02-12 14:27:55 +01:00
CLAUDE.md Initial .rules file for agent with symlinks for other rules file paths (#29014) 2025-04-17 23:41:23 +00:00
clippy.toml Revert "Revert scheduler update (#46659)" (#46671) 2026-01-14 07:19:13 +00:00
CODE_OF_CONDUCT.md Remove community content from docs and point to zed.dev (#19895) 2024-10-29 09:44:58 -04:00
compose.yml Remove Postgres and stripe-mock from Docker Compose (#48313) 2026-02-04 03:42:58 +00:00
CONTRIBUTING.md Surface UI checklist in CONTRIBUTING.md (#49013) 2026-02-12 10:08:49 +00:00
debug.plist
default.nix nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
Dockerfile-collab build: Bump Rust version to 1.93 (#47358) 2026-01-23 13:22:41 +01:00
Dockerfile-collab.dockerignore ci: Move collab to Dockerfile-collab (#18515) 2024-09-30 16:14:26 -04:00
Dockerfile-cross.dockerignore Add remote server cross compilation (#19136) 2024-10-12 23:23:56 -07:00
Dockerfile-distros Support More Linux (#18480) 2024-09-30 17:46:21 -04:00
Dockerfile-distros.dockerignore Support More Linux (#18480) 2024-09-30 17:46:21 -04:00
flake.lock nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
flake.nix Try to improve nix caching (#48297) 2026-02-03 20:31:02 -07:00
GEMINI.md Add missing GEMINI.md rule file for gemini-cli (#38885) 2025-10-02 09:47:29 -04:00
LICENSE-AGPL Update license year (#24191) 2025-02-04 09:02:59 -05:00
LICENSE-APACHE Update license year (#24191) 2025-02-04 09:02:59 -05:00
LICENSE-GPL Licenses: change license fields in Cargo.toml to AGPL-3.0-or-later. (#5535) 2024-01-27 13:51:16 +01:00
livekit.yaml Add LiveKit server to Docker Compose (#7907) 2024-02-16 10:49:48 -05:00
lychee.toml ci: Check for broken links (#30844) 2025-06-06 09:39:35 +00:00
Procfile Update instructions for local collaboration (#35689) 2025-08-06 11:10:28 -07:00
Procfile.all Add agent thread sharing (#46140) 2026-01-06 12:49:51 -08:00
Procfile.web Remove PostgREST (#41299) 2025-10-27 13:27:59 -04:00
README.md Add sponsor button to main Zed repo (#46807) 2026-01-14 10:38:51 -06:00
renovate.json Remove workspace-hack (#40216) 2025-10-17 18:58:14 +00:00
REVIEWERS.conl Remove previous teammates from REVIEWERS.conl (#46934) 2026-01-15 18:43:34 +00:00
rust-toolchain.toml toolchain: Include rust-src in the rust-toolchain components (#48210) 2026-02-02 21:07:42 +00:00
rustfmt.toml nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
shell.nix nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
typos.toml Support LSP document symbols in breadcrumbs and outline UI (#48780) 2026-02-11 21:30:03 +02:00

Zed

Zed CI

Welcome to Zed, a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.


Installation

On macOS, Linux, and Windows you can download Zed directly or install Zed via your local package manager (macOS/Linux/Windows).

Other platforms are not yet available:

Developing Zed

Contributing

See CONTRIBUTING.md for ways you can contribute to Zed.

Also... we're hiring! Check out our jobs page for open roles.

Licensing

License information for third party dependencies must be correctly provided for CI to pass.

We use cargo-about to automatically comply with open source licenses. If CI is failing, check the following:

  • Is it showing a no license specified error for a crate you've created? If so, add publish = false under [package] in your crate's Cargo.toml.
  • Is the error failed to satisfy license requirements for a dependency? If so, first determine what license the project has and whether this system is sufficient to comply with this license's requirements. If you're unsure, ask a lawyer. Once you've verified that this system is acceptable add the license's SPDX identifier to the accepted array in script/licenses/zed-licenses.toml.
  • Is cargo-about unable to find the license for a dependency? If so, add a clarification field at the end of script/licenses/zed-licenses.toml, as specified in the cargo-about book.

Sponsorship

Zed is developed by Zed Industries, Inc., a for-profit company.

If youd like to financially support the project, you can do so via GitHub Sponsors. Sponsorships go directly to Zed Industries and are used as general company revenue. There are no perks or entitlements associated with sponsorship.