This PR adds a button in the `git: branch diff` view that allows to
quickly and easily send the entire diff to your last used agent for a
review. What this does is automatically submits a (pre-written and
generic) prompt to the last agents you were using in the agent panel
with the whole content of your diff.
<img width="750" height="1964" alt="Screenshot 2026-02-18 at 3 35@2x"
src="https://github.com/user-attachments/assets/493d8cf4-4815-4b01-91a0-6a39ad6219fe"
/>
Release Notes:
- Added a "Review Branch" button in the `git: branch diff` view so that
the whole diff can be quickly sent for review to an agent.
---------
Co-authored-by: Bennet Bo Fenner <bennetbo@gmx.de>
<img width="800" height="1200" alt="image"
src="https://github.com/user-attachments/assets/2b765edc-4be4-476e-891a-9dd81fac2626"
/>
Add icon decorations on the agent icon in the sidebar to show thread
status:
- **Generation done**: blue dot (existing behavior, unchanged)
- **Blocked on tool permission/confirmation**: yellow warning triangle
- **Thread stopped due to an error**: red X
Priority order for decorations: confirmation > error > done > running
spinner.
Confirmation and error decorations persist as long as the thread is
actually in that state and always show regardless of whether the
workspace is active (unlike the blue dot which is notification-based).
(No release notes because this is all feature-flagged.)
Release Notes:
- N/A
This PR fixes issues with subagent cancellation, prior to this we would
still show a wait indicator for subagents that were cancelled from the
parent thread. We also removed the `stop_by_user` workaround, that code
path now uses `thread.cancel` directly
Before you mark this PR as ready for review, make sure that you have:
- [x] Added a solid test coverage and/or screenshots from doing manual
testing
- [x] Done a self-review taking into account security and performance
aspects
- [x] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
Release Notes:
- N/A
---------
Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>
This showed up mostly in agents that stream terminal output to Zed that
the title wasn't updated in time to see the command when needing to
provide permissions.
Release Notes:
- acp: Fix for ACP terminal titles not always being updated to their
latest value.
Co-authored-by: Bennet Bo Fenner <bennetbo@gmx.de>
Removes the feature flag around listing and loading existing sessions
for external agents.
Release Notes
- acp: Expose session history for all external agents that support it.
Co-authored-by: Bennet Bo Fenner <bennetbo@gmx.de>
Before you mark this PR as ready for review, make sure that you have:
- [ ] Added a solid test coverage and/or screenshots from doing manual
testing
- [x] Done a self-review taking into account security and performance
aspects
- [x] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
Release Notes:
- N/A
### Description
Related Discussions: #44499, #35742, #31851
Display cost multiplier for GitHub Copilot models in the model selectors
(Both in Chat Panel and Inline Assistant)
<img width="436" height="800" alt="image"
src="https://github.com/user-attachments/assets/c9ebd8fa-4d55-4be8-b3e1-f46dbf1f0145"
/>
### Some technical notes
Although this PR's primary intent is to show the cost multiplier for
GitHub Copilot models alone, I have included some necessary plumbing to
allow specifying costs for other providers in future. I have introduced
an enum called `LanguageModelCostInfo` for showing cost in different
ways for different models. Now, this enum is used in `LanguageModel`
trait to get the cost info.
For now to begin with, in `LanguageModelCostInfo`, I have specified two
ways of pricing: Request-based (1 Agent request - GitHub Copilot uses
this) and Token-based (1M Input tokens / 1M Output tokens). I had
initially thought about adding a `Free` type, especially for Ollama but
didn't do it after realizing that Ollama has paid plans. Right now, only
the Request-based pricing is implemented and used for Copilot models.
Feel free to suggest changes on how to improve this design better.
Release Notes:
- Show cost multiplier for GitHub Copilot models
---------
Co-authored-by: Danilo Leal <daniloleal09@gmail.com>
## Summary
Fixes https://github.com/zed-industries/zed/issues/48684
- Await `parsing_idle()` after `set_language()` in both
`Diff::finalized()` and `PendingDiff::finalize()` so that tree-sitter
parsing completes before buffer snapshots are taken for excerpts
- Without this, the 1ms sync parse timeout almost always expires for
non-trivial files, causing excerpts to be created with empty syntax
trees and missing syntax highlighting
## Root Cause
When the agent panel creates or finalizes a diff, it creates a new
`Buffer`, calls `set_language()` (which triggers async tree-sitter
parsing), then immediately proceeds to take buffer snapshots and create
excerpts **without waiting for parsing to complete**. The sync parse
timeout is only 1ms in production (`buffer.rs:1138`), so large files
almost always fail the sync parse and fall back to async parsing — but
no one awaits the async parse before building the diff.
## Fix
Add `buffer.update(cx, |buffer, _| buffer.parsing_idle()).await` after
`set_language()` in both code paths (`Diff::finalized()` and
`PendingDiff::finalize()`). This is the same pattern already used in
`buffer_diff.rs:1728-1731`.
## Test plan
- [x] `cargo test -p acp_thread` — all relevant tests pass
- [x] `./script/clippy` — no warnings
- [x] Manual test: open agent panel, ask it to generate a Python file
with multiline strings (`"""`), verify syntax highlighting is correct
after diff is finalized
Release Notes:
- Fixed missing syntax highlighting for multiline strings in agent panel
diffs
Closes #ISSUE
Before you mark this PR as ready for review, make sure that you have:
- [x] Added a solid test coverage and/or screenshots from doing manual
testing
- [x] Done a self-review taking into account security and performance
aspects
- [x] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
Release Notes:
- Fixed an issue where no error was shown when an LLM request exceeded
the maximum tokens supported by the model
This PR actually fixes two issues:
- the thread title being overridden even after it's been manually
edited; as you go and come back from the thread history view, the edited
title would get swapped for the auto-summarized one
- the parent thread title sometimes displaying the title of a subagent
thread; this would also override the manual edit
- - -
- [x] Tests
- [x] Code Reviewed
- [x] Manual QA
Release Notes:
- Agent: Fixed thread titles being overridden even when manually edited.
---------
Co-authored-by: Bennet Bo Fenner <bennetbo@gmx.de>
This PR updates the model selector to highlight the latest models that
are available through the Zed provider:
<img width="388" height="477" alt="Screenshot 2026-02-06 at 1 46 41 PM"
src="https://github.com/user-attachments/assets/70760399-ecf6-46e3-80a7-cb998216c192"
/>
Closes CLO-205.
Release Notes:
- Added a "Latest" indicator to highlight the latest models available
through the Zed provider.
This PR extends error telemetry coverage in the agent panel, building on
#46836 which added telemetry for thread errors.
`"Agent Panel Error Shown"` (extended)
Now also fires for:
- **Load errors** - when an agent fails to start
- **Configuration errors** - when LLM provider setup is incomplete
`"Agent Token Limit Warning"` (new event)
Fires when a thread approaches or exceeds its token/context limit. This
is tracked separately from errors because it's an informational warning,
not a failure.
## Implementation Notes
- All telemetry fires **once per error occurrence**, not on every render
- Load error telemetry fires in `handle_load_error()` when the error is
first received
- Token limit telemetry uses a flag to track state transitions (Normal →
Warning → Exceeded)
- Configuration error telemetry tracks the last emitted error kind to
avoid duplicates
Release Notes:
- N/A *or* Added/Fixed/Improved ...
---------
Co-authored-by: Michael Benfield <mbenfield@zed.dev>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Follow up to https://github.com/zed-industries/zed/pull/47637
- Removes the requirement for the terminal to be focused to use the
`cmd->` keybinding. This way, we match the behavior of buffer selections
and you can always add what's selected in the terminal inside the agent
panel
- Add number of lines selected in the mention button as well
- Make the "Selection" menu item inside the "Add Context" menu also
observe terminal selections
<img width="420" height="254" alt="Screenshot 2026-01-29 at 1 36@2x"
src="https://github.com/user-attachments/assets/25d2eb00-096f-44d9-8882-273932ca43e4"
/>
Release Notes:
- Agent: Add number of liners selected in the terminal context mention
Summary
This PR adds the ability to quote terminal selections into Agent
threads, similar to how editor selections can be quoted. Users can now
select text in the terminal and add it as context to their agent
conversation.
### Features
- **Context menu**: Added "Add to Agent Thread" option to the terminal's
right-click menu (only shows when text is selected)
- **Keyboard shortcut**: The existing `cmd->` / `ctrl->` shortcut now
works in the terminal
- **Collapsed display**: Terminal output appears as a collapsed
"Terminal" crease in the chat, just like code references
- **Works with both thread types**: Supports both ACP-style threads
(Claude Code) and text threads
### Implementation
- Extended `quote_selection` handler to check for terminal panel focus
after checking for editor selections
- Terminal content is formatted as ` ```terminal` code blocks via new
`insert_terminal_crease` method
- Refactored crease insertion into `insert_crease_impl` helper to
support both code snippets (with `TextSnippet` icon) and terminal output
(with `Terminal` icon)
- Added automatic detection and folding of ` ```terminal` blocks in
`set_message` so terminal content stays collapsed in sent message
history
- Terminal creases use a trailing space instead of newline so cursor
behavior matches user expectations
### Demo
1. Select text in terminal
2. Right-click → "Add to Agent Thread" (or press `cmd->`)
3. Terminal content appears as collapsed "Terminal" block in chat
4. Send message - AI receives full terminal output, but chat history
shows it collapsed
### General note
I'm new to open source and the codebase in general so let me know if
anything should be different!
I tried to stay in line with other patterns I saw.
I didn't see a way to setup an end to end test with a real terminal so I
just added a unit test for the adding of the text to the chat, if it
exists and I missed it then I think the test coverage could be improved
with a test that uses a real terminal + running the command
<img width="431" height="148" alt="image"
src="https://github.com/user-attachments/assets/854732f9-2a7f-4f31-867e-d54af068c97c"
/>
Release Notes:
- agent: Added the ability to send selections from terminals into the
Agent thread
---------
Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>
## Summary
This PR extends the `always_allow` tool permission patterns to work with
Nushell, Elvish, and Rc shells. Previously, these shells were
incorrectly excluded because they don't use `&&`/`||` operators for
command chaining. However, brush-parser can safely parse their command
syntax since they all use `;` for sequential execution.
## Changes
- Add `ShellKind::Nushell`, `ShellKind::Elvish`, and `ShellKind::Rc` to
`supports_posix_chaining()`
- Split `ShellKind::Unknown` into `ShellKind::UnknownWindows` and
`ShellKind::UnknownUnix` to preserve platform-specific fallback behavior
while still denying `always_allow` patterns for unrecognized shells
- Add comprehensive tests for the new shell support
- Clarify documentation about shell compatibility
## Shell Notes
- **Nushell**: Uses `;` for sequential execution. The `and`/`or`
keywords are boolean operators on values, not command chaining.
- **Elvish**: Uses `;` to separate pipelines. Does not have `&&` or `||`
operators. Its `and`/`or` are special commands operating on values.
- **Rc (Plan 9)**: Uses `;` for sequential execution and `|` for piping.
Does not have `&&`/`||` operators.
## Security
Unknown shells still return `false` from `supports_posix_chaining()`, so
`always_allow` patterns are denied for safety when we can't verify the
shell's syntax.
(No release notes because granular tool permissions are still
feature-flagged.)
Release Notes:
- N/A
---------
Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>
- **title_bar: Extract platform_title_bar from title_bar**
- **file_finder no longer depends on search and agent_servers no longer
depend on language_models**
Release Notes:
- N/A
---------
Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>
We might interface with the LSP using URL heres across remotes that have
differing path styles which then breaks every now and then when we have
windows to unix connections. This should helps us fix these occurences
more correctly
Release Notes:
- N/A *or* Added/Fixed/Improved ...
This is behind the beta flag. But some agents don't support a full load
flow, but rather just a resume from the current state of the session.
They don't emit notifications for past thread messages, which isn't
ideal, but the user can at least resume their work without completely
losing it.
We use it as a fallback if the agent doesn't support loading only, and
signal to the user that they won't be able to see previous messages.
Release Notes:
- N/A
Many editors such as vim and emacs support "modelines", a comment at the
beginning of the file that allows the file type to be explicitly
specified along with per-file specific settings
- The amount of configurations, style and settings mapping cannot be
handled in one go, so this opens up a lot of potential improvements.
- I left out the possiblity to have "zed" specific modelines for now,
but this could be potentially interesting.
- Mapping the mode or filetype to zed language names isn't obvious
either. We may want to make it configurable.
This is my first contribution to zed, be kind. I struggled a bit to find
the right place to add those settings. I use a similar approach as done
with editorconfig (merge_with_editorconfig). There might be better ways.
Closes#4762
Release Notes:
- Add basic emacs/vim modeline support.
Supersedes #41899, changes:
- limit reading to the first and last 1kb
- add documentation
- more variables handled
- add Arc around ModelineSettings to avoid extra cloning
- changed the way mode -> language mapping is done, thanks to
`modeline_aliases` language config
- drop vim ex: support
- made "Local Variables:" handling a separate commit, so we can drop it
easily
- various code style improvements
---------
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>
This PR implements a UI for the side-by-side diff, using blocks to align
the two sides and adding a coherent `SplitEditorElement`.
Release Notes:
- N/A
---------
Co-authored-by: cameron <cameron.studdstreet@gmail.com>
Co-authored-by: Anthony Eid <hello@anthonyeid.me>
Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>
Closes#31351
# Diagnostics Mention in New Threads
## Overview
Adds the `@diagnostics` mention to the new Agent Panel threads so users
can inject current LSP diagnostics (errors by default) without switching
to a text thread. The diagnostics mention is fully integrated into ACP
mention parsing, the context picker, and the message-editor pipeline so
it round-trips cleanly and shows up in the standard `@` menu.
## Context
- **Request:** bring `/diagnostics` parity to the “New Thread” assistant
experience.
- **Scope:** diagnostics only; `/terminal` mention would be implemented
in a separate PR.
- **Docs:** updated Agent Panel docs + changelog.
## Implementation Details
1. **Mention plumbing**
- Added `MentionUri::Diagnostics` to `acp_thread`, including parsing
(`zed:///agent/diagnostics?include_warnings=true`) and icon/name
metadata.
- Tests ensure diagnostics links round-trip via Markdown mention
serialization.
2. **Context picker / completion**
- New `ContextPickerMode::Diagnostics` exposes an `@diagnostics` entry
in the mention menu.
- Completions turn `@diagnostics` into a fully fledged mention, reusing
the existing confirmation pipeline.
3. **Message editor + thread serialization**
- Resolving the mention calls the existing diagnostics collector from
`assistant_slash_commands`, embedding the tool output inline with other
context blocks (`<diagnostics>…</diagnostics>`).
- Thread-link handling ignores diagnostics backlinks so clicking them
doesn’t try to reopen nonexistent resources.
# How it looks
<img width="800" height="480" alt="image"
src="https://cf5gpe8lxo.ufs.sh/f/EmJ5Xl877qJO1mzC9Zrn8AmJZHeShC4RoUwvTMlF2tfPzj06"
/>
Release Notes:
- Allow mentioning diagnostics in the agent panel via `@diagnostics`
---------
Co-authored-by: Bennet Bo Fenner <bennet@zed.dev>
This makes sure all of the new granular permission logic and ui only
applies to the zed agent and doesn't affect the UI of external agents.
Release Notes:
- N/A
This feature cost $15.
Up -> Tokens we're sending to the model
Down -> Tokens we've received from the model.
<img width="377" height="69" alt="Screenshot 2026-01-14 at 12 31 01 PM"
src="https://github.com/user-attachments/assets/fc15824f-de5d-466b-8cc1-329f3c1940bb"
/>
Release Notes:
- Changed the display of tokens for OpenAI models to reflect the
input/output limits.
---------
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
## Summary
This PR adds the UI for displaying subagent tool calls:
### Thread view changes
- Add `expanded_subagents` state HashMap for tracking expanded cards
- Implement `render_subagent_tool_call()` for collapsed card with label
and chevron
- Add subagent detection via `is_subagent()` and `tool_name` field
- Handle `SubagentThread` content type in tool call rendering
- Add expand/collapse toggle button for subagent cards
- Style collapsed cards similar to terminal tool calls
- Support inline image rendering in content blocks
### Agent panel changes
- Add `open_external_thread_with_server()` for testing with stubbed
servers
### Test support
- Add `acp_thread/test-support` feature to agent_ui
- Add base64 dev dependency for image tests
Release Notes:
- N/A
---------
Co-authored-by: Amp <amp@ampcode.com>
Release Notes:
- Agent: Added a menu item in the agent panel right-click menu for
copying a given agent's response.
---------
Co-authored-by: Danilo Leal <daniloleal09@gmail.com>
Closes#40322
When users run multi-line terminal commands, the confirmation dialog was
only showing the first line with '- N more lines' truncated. This meant
dangerous commands like 'rm -rf' or 'sudo' operations could be hidden
from view, creating a security risk.
Now terminal commands always display in full, with scroll support for
very long commands (20+ lines) to keep the confirmation buttons visible.
Other tools continue using truncation for better UI efficiency since
they don't pose the same security concerns.
Release Notes:
- Agent: Fixed terminal command truncation in the agent panel to better
expose long commands (e.g., potentially dangerous multi-line commands
are now fully visible before execution)
---------
Co-authored-by: Danilo Leal <daniloleal09@gmail.com>
Co-authored-by: dino <dinojoaocosta@gmail.com>
Feature flagged for now as we test this out with actual agents to see if
we need to provide any more feedback to the RFD before committing to the
current setup.
Release Notes:
- N/A
This should move almost all access of the threadstore behind the trait,
which unlocks external agents supplying the list
Release Notes:
- N/A
---------
Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>
This PR improves the visual test infrastructure:
- Adds controllable foreground executor for deterministic task
scheduling
- Adds tooltip hover testing capability
- Improves error handling in visual test runner
- Includes planning documentation for the approach
Release Notes:
- N/A
I really enjoyed this feature in Claude Code. Helps me get a sense of
how effortful something is.
Release Notes:
- Added a "show_turn_stats" setting, default to false, that shows the
timer and the number of tokens down.
Before this we failed to parse some file:/// links the agent would
generate causing it to open in the system default app and not zed.
Release Notes:
- N/A
Previously, if you stopped the terminal prematurely, the agent would
assume the terminal process had timed out. Now it knows what happened
and can see the output:
<img width="718" height="885" alt="Screenshot 2026-01-07 at 12 40 23 AM"
src="https://github.com/user-attachments/assets/a5ea14b2-249c-4ada-9f20-d6b608f829e5"
/>
Release Notes:
- Stopping the terminal tool now allows the agent to see its output up
to that point.
Now when the agent reads images (which the tool now explicitly
advertises to agents that it is capable of; previously the tool said it
could only read text even though it can actually read images), we see
them in the thread, and also they are auto-expanded by default so you
can see them when scrolling through:
<img width="725" height="1019" alt="Screenshot 2026-01-06 at 2 57 11 PM"
src="https://github.com/user-attachments/assets/5c908bad-48f2-46c2-afaa-7f189a178e05"
/>
This also adds a visual regression test that verifies images render
correctly in the agent thread view.
Unlike our previous visual tests, this one only renders the agent panel,
not the entire Zed window.
The "screenshot" it generates (rendered to a Metal texture) is from
completely mocked/simulated data structures, and looks like this:
<img width="546" height="984" alt="Screenshot 2026-01-06 at 2 54 41 PM"
src="https://github.com/user-attachments/assets/89a0921f-59e9-4dfe-94b2-4c3b625a851b"
/>
## Changes
- **New visual test**: `agent_thread_with_image` renders an
`AcpThreadView` containing a tool call with image content (the Zed app
icon)
- **Test infrastructure**: Added `StubAgentServer` helper and required
feature flags for visual testing
- **Test-support API**: Added `expand_tool_call()` method to
`AcpThreadView` to allow expanding tool calls for visual testing
- **Baseline screenshot**: Included baseline image showing the Zed logo
rendered in a tool call output
## How to run
```bash
# Run the visual tests
cargo run -p zed --bin visual_test_runner --features visual-tests
# Update baselines if UI intentionally changed
UPDATE_BASELINE=1 cargo run -p zed --bin visual_test_runner --features visual-tests
```
Release Notes:
- N/A
---------
Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>
Co-authored-by: Amp <amp@ampcode.com>
