Store a request/response capture for non-200 responses so failed
requests can be inspected in the activity log's Capture dialog, matching
the existing behavior for successful requests.
- extract storeCapture/decodeResponseBody helpers to share capture logic
between the success and non-200 paths
- record non-200 bodies (decompressed) so error details are viewable
- the activity UI already gates the View button on has_capture, so it
now appears for failed requests with no UI changes
- add tests for capturing failed requests and the disabled-captures case
closes#766
- add support for http handlers in the request chain to append metadata
to the request
- metrics middleware will include metadata in the activity log
- update Activity UI to support metadata, drag sort columns
- update Activity UI capture dialog to use more screen space
Updates #834
- When a model is manually loaded show a cancel buttton and a queued
status
- Implement cancellation in scheduler.Scheduler interface and FIFO
scheduler
- Add cache bust query parameter to bypass browser cache
Fixes#844
internal/config,server: implement model capabilities
- define the capabilities of a model using a simple config block on the
model
- v1/models renders out capabilities to be compatible with openrouter,
huggingface chat, and mistral formats for broader compatibility
- add support for capabilities in UI
Fixes#734
Implement performance monitoring on OSX for Apple Silicon hardware.
The implementation uses a combination of mactop and ioreg. If mactop is
installed (`brew install mactop`) it is used in a headless cli mode to
stream usage metrics. mactop hooks into unpublished(?) C based APIs in
OSX. Rather than introduce a cgo dependency into llama-swap's build
chain only for darwin I opted to go the external process route.
ioreg, which comes bundled with OSX is used as the fallback. It does not
provide temperature and power usage data but is able to show accurate
GPU and memory utilization.
Updates #771, #814
The backend uses cache_tokens=-1 as a sentinel for endpoints that don't
report cache stats (embeddings, vLLM). The activity table correctly
renders these as "-", but the totals widget summed the sentinels
directly, so each such request subtracted 1 from the displayed total.
- clamp cache_tokens with Math.max(0, ...) when reducing
This improves the support for activity logging from the v1/responses and
v1/messages endpoints.
- add chat endpoint selection to Playground > Chat > Settings
- improve metrics extraction for streaming v1/messages and v1/responses
endpoints (tested with llama-server)
Fixes#742
Add system theme detection with automatic switching when OS theme
changes.
- Add ThemeMode type with "light", "dark", and "system" options
- Add system theme listener using matchMedia API
- Update theme toggle to cycle through System → Light → Dark
- Add combined sun/moon icon for system theme mode
- Migrate existing theme preferences to new format
Add a comprehensive performance monitoring system that collects CPU, memory, swap, load average, network IO, and GPU stats. Provides both a REST API for the UI and a Prometheus /metrics endpoint.
Backend changes:
- New internal/perf package with configurable interval-based stats collection
- GPU monitoring via LACT (Unix socket) and nvidia-smi fallback on Linux
- Ring buffer (internal/ring) for time-series stat storage
- Prometheus /metrics endpoint with all system and GPU metrics
- Moved LogMonitor to internal/logmon package
- New PerformanceConfig for hot-reloadable monitoring settings
- REST /api/performance endpoint replacing SSE streaming
UI changes:
- New Performance page with real-time charts for CPU, memory, GPU, and network
- Reusable PerformanceChart component
- LLAMA_SWAP_URL environment variable support
- Improved capture dialog display
Other:
- Example Grafana dashboard for Prometheus metrics
- monitor-test standalone binary
- Config schema and example updates
fixes#596
- inference handles to store an activity record for all inference endpoints
- add path, status code, and content type to Activities page
- toggle on/off columns no Activities page
- add configurable capture level for inference endpoints so large binary blobs are not stored in memory
- store captures in compressed binary format
- Fix the histogram calculation to use server provided generation
tokens/second.
- Move histogram to Activities page where it can exist with the rest of
the token metrics
Fixes#681
Add proxy routes for stable-diffusion.cpp's /sdapi/v1/txt2img,
/sdapi/v1/img2img, and /sdapi/v1/loras endpoints. POST endpoints
use proxyInferenceHandler (model in JSON body), GET /loras uses
proxyGETModelHandler (model in query param).
Update the image playground with a dual-mode UI supporting both
OpenAI and SDAPI backends. In SDAPI mode, loras are fetched first
to prime the server-side cache, and all txt2img parameters are
exposed (negative prompt, steps, cfg_scale, seed, batch_size,
clip_skip, sampler, scheduler, lora selection with multipliers).
- Add 3 sdapi route registrations in proxymanager.go
- Add sdApi.ts client with generateSdImage and fetchSdLoras
- Add SDAPI types (SdApiTxt2ImgRequest, SdApiResponse, etc.)
- Add /sdapi to vite dev proxy config
- Add backend tests for sdapi routing
- Support batch image display in gallery grid
https://claude.ai/code/session_0186MGX6NXdHVBTv2KH45fqn
---------
Co-authored-by: Claude <noreply@anthropic.com>
Upgrade vite and related dependencies to take advantage of Vite 8's
improved build times via Rolldown and Oxc.
- vite: ^6.3.5 → ^8.0.0
- @sveltejs/vite-plugin-svelte: ^5.0.3 → ^7.0.0
- svelte: ^5.19.0 → ^5.46.4
- vite-plugin-compression2: ^2.4.0 → ^2.5.1
- vitest: ^4.0.18 → ^4.1.0
---------
Co-authored-by: Claude <noreply@anthropic.com>
Use natural sorting for model names.
Previously the model list was sorted lexicographically, which resulted
in unintuitive ordering when numbers were included in the name.
Example:
Before
qwen3.5:2B
qwen3.5:35B-3AB
qwen3.5:9B
After
qwen3.5:2B
qwen3.5:9B
qwen3.5:35B-3AB
This change sorts models using natural order so numeric parts are
compared numerically.
Add a copy-to-clipboard button that appears on hover for each code block
rendered in the chat interface assistant messages.
- Svelte action `codeBlockCopy` injects a button into every `<pre>`
element
- MutationObserver reattaches buttons as streaming content arrives
- Button shows a check icon for 2 seconds after a successful copy
- Uses clipboard API with execCommand fallback for non-secure contexts
- CSS hides button by default and reveals it on pre:hover
https://claude.ai/code/session_01PTA5ao5YQuFAS6a9juLeZW
---------
Co-authored-by: Claude <noreply@anthropic.com>
Add a new Rerank tab to the playground that lets users test /v1/rerank
endpoints. Supports a visual table editor and a JSON editor mode that
stay in sync when toggling between them.
- add rerankApi.ts with typed wrapper for /v1/rerank
- add RerankInterface.svelte with query input, sortable document table,
color-coded scores, auto-add row, cancel/clear, and token usage
- add rerankLoading store to playgroundActivity derived store
- register Rerank tab in Playground.svelte
Updates #481
Add setParamsByID filter that applies different request parameters based
on the requested model ID, enabling per-alias behaviour for a single
loaded model.
- add SetParamsByID field to Filters struct and SanitizedSetParamsByID
method
- substitute ${MODEL_ID} and other macros in setParamsByID keys and
values
- validate no unknown macros remain in keys or values after substitution
- apply setParamsByID in proxyInferenceHandler after setParams (can
override it)
- update config-schema.json with setParamsByID definition
- update UI to show aliases and make them selectable in the Playground
closes#534
Pause auto-scroll when the user scrolls up to review logs, and resume
when they scroll back to the bottom.
- add `userScrolledUp` state variable
- add `handleScroll` to detect scroll position with 40px threshold
- guard the auto-scroll effect with `!userScrolledUp`
closes#529
- Keep Playground component mounted when navigating away, preserving
streaming/generating state
- Add animated gradient effect on Playground nav link when activity is
in progress
Add saving request and response headers and bodies that go through
llama-swap in memory.
- captureBuffer added to configuration. Captures are enabled by default.
- 5MB of memory is allocated for req/response captures in a ring buffer.
Setting captureBuffer to 0 will disable captures.
- UI elements to view captured data added to Activity page. Includes
some
QOL features like json formatting and recombining SSE chat streams
- capture saving is done at the byte level and has minimal impact on
llama-swap performance
Fixes#464
Ref #503
Reorganizes control placement in the playground interfaces and
improves form interactions for better UX, particularly on mobile
devices.
## Key Changes
- **AudioInterface & ImageInterface**: Moved "Clear" buttons from the
top control bar into the action button group below the form inputs for
better visual hierarchy and logical grouping
- **ImageInterface**:
- Added prompt clearing to the `clearImage()` function so the input
field is reset when clearing generated images
- Updated Clear button disabled state to also check if prompt is empty,
allowing users to clear an empty prompt
- Added responsive flex styling (`flex-1 md:flex-none`) to the Clear
button for better mobile layout
- **ExpandableTextarea**:
- Imported `untrack` from Svelte to properly handle reactive
dependencies
- Wrapped `expandedValue.length` in `untrack()` to prevent unnecessary
reactivity when setting cursor position
- Improved button visibility on mobile by changing opacity from
`opacity-0` to `opacity-60` with `md:opacity-0` breakpoint, making the
expand button more discoverable on touch devices
## Implementation Details
The `untrack()` usage in ExpandableTextarea ensures that reading the
text length doesn't create a reactive dependency, preventing potential
infinite loops while still allowing the effect to run when `isExpanded`
changes.
* .github/workflows: add UI tests and path-filter Go CI
Add ui-tests.yml workflow to run svelte type checking and vitest
on push/PR to main when ui-svelte/ files change.
- Add path filters to go-ci.yml and go-ci-windows.yml to skip
Go tests when only non-backend files change
- Filter on **/*.go, go.mod, go.sum, and Makefile
https://claude.ai/code/session_01E6acq54D8JjuE7pczxPGT7
* ui-svelte: remove unused declarations in SpeechInterface
Remove unused `generatedText` state and `clearAudio` function
that caused svelte-check errors.
https://claude.ai/code/session_01E6acq54D8JjuE7pczxPGT7
* .github/workflows: update Node.js to v24
Node 23 is end-of-life; bump to 24 in ui-tests.yml and release.yml.
https://claude.ai/code/session_01E6acq54D8JjuE7pczxPGT7
---------
Co-authored-by: Claude <noreply@anthropic.com>
Replace the legacy React UI with the new Svelte-based one. Introduce a Playground in the UI to quickly test out text, image, text to speech and speech to text models behind llama-swap.
Key Changes
New Svelte UI (ui-svelte/)
- Multi-tab Playground with Chat, Image Generation, Audio Transcription, and Speech interfaces
- Chat: message editing/regeneration, markdown rendering with LaTeX math support, image attachments, code syntax highlighting
- Image: size selector, download/fullscreen viewing
- Audio: transcription with peer support
- Speech: voice caching with manual refresh, download button
- Responsive mobile layout with collapsible navigation
- XSS fixes and accessibility improvements
Proxy Improvements
- Add gzip/brotli compression for UI static assets (proxy/ui_compress.go)
- Add GET /v1/audio/voices?model={model} endpoint for voice listing
- Add peer support for /v1/audio/transcriptions
Trying out svelte for the UI. The port was done by Claude Code on the iOS app w/ Opus 4.5.
---
* ui: add Svelte port of React UI
Port the React-based UI to Svelte 5 with the following changes:
- Create new ui-svelte directory with complete Svelte 5 implementation
- Use Svelte stores instead of React contexts for state management
- Implement custom ResizablePanels component to replace react-resizable-panels
- Port all pages: LogViewer, Models, Activity
- Port all components: Header, ConnectionStatus, LogPanel, ModelsPanel, etc.
- Use svelte-spa-router for client-side routing
- Same build output directory (proxy/ui_dist) and base path (/ui/)
- Tailwind CSS 4 with same theme configuration
https://claude.ai/code/session_01F3xXLYsd62gePVSFv7aboP
* ui-svelte: simplify state management
- Remove redundant state syncing pattern in LogPanel and ModelsPanel
- Use store values directly with $ syntax instead of manual subscriptions
- Consolidate duplicate title sync logic in App.svelte
- Use existing syncTitleToDocument() from theme.ts
https://claude.ai/code/session_01F3xXLYsd62gePVSFv7aboP
* ui-svelte: use idiomatic Svelte 5 patterns
- Use $effect for document side effects (theme, title) instead of
store subscriptions
- Use class: directive for active nav links in Header
- Remove SSR guards (unnecessary for client-only SPA)
- Remove leaked subscription in syncThemeToDocument
- Simplify theme.ts by removing sync functions
https://claude.ai/code/session_01F3xXLYsd62gePVSFv7aboP
* ui-svelte: fix build warnings and improve accessibility
Fix Svelte build warnings and add proper accessibility support
to interactive components.
- add aria-labels to buttons for screen readers
- implement keyboard navigation for resizable separator
- suppress intentional state initialization warnings
- update Makefile to use ui-svelte build directory
- add peer:true to package-lock.json dependencies
* ui-svelte: reorganize navigation and add log view toggle
Make Models the default landing page and add view mode toggle
to the Logs page with persistent state.
- set Models as default route at /
- move Logs to /logs route
- reorder navigation: Models, Activity, Logs
- add view toggle with three modes: Panels, Proxy only, Upstream only
- fix horizontal overflow with width constraints
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