- Replace glamour-based markdown rendering with herald/herald-md
- Update go.mod and go.sum with new dependencies
- Refactor styles.go to use Typography cache instead of TermRenderer
- Update enhanced_styles.go for compatibility
- Update btca.config.jsonc configuration
- Update github.com/indaco/herald v0.9.0 -> v0.10.0
- Update charm.land/bubbles/v2 v2.0.0 -> v2.1.0
- Update AWS SDK v2 packages
- Update google.golang.org/genai v1.51.0 -> v1.52.0
- Update various other dependencies
refactor(ui): use herald.CodeBlock for Read tool output
- Replace manual renderCodeBlock() with herald.CodeBlock()
- Add WithCodeLineNumberOffset() support for correct line numbers
- Extract language hint from file extension for syntax highlighting
- Preserve existing syntax highlighting via WithCodeFormatter()
- Remove unused codeLine struct and renderCodeBlock function
- Replace MessageRenderer with herald-based implementation
- Use herald alerts (Note, Tip, Warning, Caution) for message types
- Use blockquote for thinking/reasoning content
- Use KVGroup for startup info display
- Add margin-bottom to all message types for visual separation
- Simplify Read tool with herald CodeBlock and line numbers
- Add detectLanguage helper for syntax highlighting
- Capture extension startup messages and print after startup banner
- Remove ~200 lines of custom rendering code
- Update all Go dependencies to latest versions
- Remove internal/app/usage_test.go (import cycle)
- Add sanitizeToolCallID function to fix message tests
- All tests pass with race detection
- Upgrade charm.land/fantasy from v0.16.0 to v0.17.1
- Add buildCodexProviderOptions() to pass system prompt as 'instructions'
- The Codex API requires instructions as a top-level field, not as system message
- Set Store=false to prevent server-side conversation storage
- Use ResponsesProviderOptions.Instructions for system prompt
- Replace custom multi-select with huh.NewMultiSelect for kit install --select
- Replace raw bufio prompts in cmd/auth.go with huh.NewConfirm and huh.NewInput
- Fix extension discovery to use opinionated conventions (only scan root,
extensions/, ext/, examples/extensions/ directories, skip cmd/internal/pkg/)
- Fix loader to use same convention-based scanning for installed git repos
- Fix errcheck lint warning in loader.go
Add /model command that allows switching LLM models mid-session.
When invoked without arguments, opens a full-screen selector overlay
showing only models with configured API keys, with inline fuzzy search,
cursor navigation, and current model indicator. When invoked with an
argument (e.g. /model anthropic/claude-haiku-4-5), switches directly.
Also upgrades all Go dependencies to latest versions.
Remove the entire internal/builtin package (bash, fetch, todo, http, fs
servers) and all inprocess/builtin transport support from config and
connection pool.
Add internal/core package with 7 direct fantasy.AgentTool implementations
matching pi's coding agent: bash, read, write, edit, grep, find, ls.
These execute in-process with zero MCP/JSON serialization overhead.
Add internal/message package with crush-inspired custom content blocks:
ContentPart interface with TextContent, ReasoningContent, ToolCall,
ToolResult, and Finish types. Messages carry heterogeneous Parts slices
with type-tagged JSON serialization for persistence and a ToFantasyMessages
bridge for LLM provider integration.
Core tools are always registered on the agent. External MCP servers remain
supported for additional tools, but MCP loading failures are now non-fatal
since core tools guarantee a working baseline.
Replace catwalk dependency with direct models.dev integration (97 providers,
3039 models vs catwalk's 22/679). Auto-route @ai-sdk/openai-compatible
providers through fantasy's openaicompat using the api URL from models.dev,
eliminating the need for --provider-url. Add --all flag to 'mcphost models'
to show all providers vs just fantasy-compatible ones.
Fix all 74 golangci-lint issues: errcheck (53), staticcheck SA4006 (24),
SA9003 (2), ST1005 (5), ineffassign (3). Restructure styles.go color
handling into a colorScheme struct to eliminate SA4006 false positives
from new(x) syntax.
- Make model validation advisory: unknown models pass through to the
provider API with a stderr warning instead of blocking. Catwalk
metadata is used for cost tracking and suggestions when available.
- Add LookupModel() as the primary registry API (returns nil for
unknown models, no error).
- Add 'mcphost update-models' subcommand to refresh the model database
from a catwalk server (defaults to https://catwalk.charm.sh), a local
file, or reset to the embedded version. Supports ETag caching.
- Add disk cache layer at ~/.local/share/mcphost/providers.json;
registry loads cached data first, falls back to embedded.
- Add vercel provider support via fantasy.
- Add io.Closer plumbing to ProviderResult and Agent.Close() for
providers that hold resources.
Each spinner created a new tea.NewProgram which sent DECRQM queries for
synchronized output mode 2026. When the program exited and restored
cooked terminal mode, the terminal's DECRPM response leaked as visible
^[[?2026;2$y characters. Replace Bubble Tea spinner with a simple
goroutine animation loop writing directly to stderr via lipgloss.
Add support for using Claude models via Google Cloud Vertex AI through
the `google-vertex-anthropic` provider. This enables users who have
Claude access through their Google Cloud account to use mcphost with
Vertex AI authentication.
Changes:
- Add `google-vertex-anthropic` provider case and createVertexAnthropicProvider()
- Support multiple env var names for project/region to match eino-claude:
- Project: ANTHROPIC_VERTEX_PROJECT_ID, GOOGLE_CLOUD_PROJECT, GCLOUD_PROJECT
- Region: CLOUD_ML_REGION (defaults to "global" if not set)
- Upgrade eino from v0.5.11 to v0.7.11 (required by eino-claude v0.1.12)
- Migrate schema API from OpenAPI v3 to JSON Schema (eino v0.7.11 change)
Usage:
# Authenticate with Google Cloud
gcloud auth application-default login
# Set required environment variables
export ANTHROPIC_VERTEX_PROJECT_ID="your-project-id"
export CLOUD_ML_REGION="us-east5" # or use default "global"
# Run mcphost
mcphost --model google-vertex-anthropic:claude-sonnet-4@20250514
Reference: https://docs.anthropic.com/en/docs/claude-code/google-vertex-ai🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
* Add support of config for SSE servers. Add Authorization header support
* Change the format of JSON for SSE servers to be similar to other tools
---------
Co-authored-by: Roman Gelembjuk <Roman Gelembjuk>
* add google/gemini support
* fix user/model role issues, use chat session
* properly maintain history
* update gemini/google provider, pipe context through runPrompt, minor fixes
* minor formatting fix in usage tooltip
* update readme to showcase Google/Gemini support
---------
Co-authored-by: Ed Zynda <ezynda3@users.noreply.github.com>
Ed Zynda