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original uri https://github.com/zed-industries/zed
https://zed.dev
ca2d7fd9e5
# Objective - Fixes #59614. - A stdio `context_servers` entry defined with only a `command` (the minimal form most MCP hosts accept, e.g. `{ "command": "echo" }`) fails to deserialize. `ContextServerCommand.args` is a required field, so the entry matches no variant of the untagged `ContextServerSettingsContent`; the server silently never loads, and the only log line is the opaque `data did not match any variant of untagged enum ContextServerSettingsContent`. Other fields (`env`, `timeout`) are already optional, and the docs only ever show `args` with a value without stating it is required, so users reasonably assume it is optional. ## Solution - Add `#[serde(default)]` to `ContextServerCommand.args` in `crates/settings_content/src/project.rs`, so it defaults to an empty list when omitted, the same way `env` and `timeout` are already optional. `{ "command": "echo" }` now defines a valid stdio server with no arguments. ## Testing - Added `test_stdio_context_server_without_args` in `crates/settings_content/src/project.rs`, which deserializes `{ "command": "echo" }` (asserts empty `args`) and `{ "command": "echo", "args": ["hello"] }` (regression guard). - Fail-before/pass-after confirmed: without the change the new test fails with the exact error from the issue; with it, `cargo test -p settings_content` passes (24 passed, 0 failed). - `cargo clippy -p settings_content --tests` and `cargo fmt -p settings_content -- --check` are clean. - serde-only change; platform-independent. ## Self-Review Checklist: - [x] I've reviewed my own diff for quality, security, and reliability - [x] Unsafe blocks (if any) have justifying comments - [x] The content adheres to Zed's UI standards ([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist) and [icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md) guidelines) - [x] Tests cover the new/changed behavior - [x] Performance impact has been considered and is acceptable --- Release Notes: - Fixed stdio MCP servers configured with only a `command` (no `args`) failing to load. |
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Zed
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:
- Web (tracking discussion)
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
Zed source code is licensed primarily under GPL-3.0-or-later, with Apache-2.0 components where marked.
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 specifiederror for a crate you've created? If so, addpublish = falseunder[package]in your crate's Cargo.toml. - Is the error
failed to satisfy license requirementsfor 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 theacceptedarray inscript/licenses/zed-licenses.toml. - Is
cargo-aboutunable to find the license for a dependency? If so, add a clarification field at the end ofscript/licenses/zed-licenses.toml, as specified in the cargo-about book.
Sponsorship
Zed is developed by Zed Industries, Inc., a for-profit company.
If you’d 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.