- Remove deprecated GenerateWithLoopAndStreaming and TreeManager
AppendFantasyMessage / AddFantasyMessages / GetFantasyMessages to
close the SDK leakage caused by the kit.TreeManager type alias
- Switch extensionAPI method signatures to local Extension* aliases so
pkg.go.dev signatures no longer expose internal package names
- Bundle runNormalMode dependencies into a runModeDeps struct, shrinking
the runNonInteractive and runInteractive call sites from 40+ positional
args to (ctx, deps)
- Add generic subscribeTyped[E Event] helper and collapse ~30 typed OnXxx
wrappers in pkg/kit/events.go onto it (public signatures unchanged)
- Extract setupBashPipes / interpretBashExit in internal/core/bash.go to
deduplicate the buffered and streaming execution paths
- Extract resolveAutoRouteAPIKey and wrapProviderErr helpers in
internal/models/providers.go and uniformly apply them across every
createXxxProvider site
- Reimplement internal/extensions/watcher.go as a thin wrapper over the
general-purpose internal/watcher.ContentWatcher, eliminating ~130 LOC
of duplicated fsnotify logic while preserving the existing test API
- Add ctx.Err() pre-flight checks in executeRead / Write / Edit / Ls so
cancellation actually short-circuits pure file-IO tools
Thread ToolCallID, ToolKind, ParsedArgs, FileDiff metadata, StopReason,
SessionID, and StructuredMessages across the SDK event bus, extension
wrapper, app bridge, hooks, and ACP server layers.
- Gap 1: ToolCallID from Fantasy's ToolCallContent threaded end-to-end
- Gap 2: ToolKind via static lookup (execute/edit/read/search/agent)
- Gap 3+4: FileDiffInfo with DiffBlocks via fantasy.ToolResponse.Metadata
- Gap 5: StopReason from Fantasy FinishReason on TurnEndEvent/TurnResult
- Gap 6: Subagent sessions now opt-out (NoSession); SessionID in JSON output
- Gap 7: GetStructuredMessages() returns typed ContentParts
- Gap 8: ParsedArgs map[string]any on tool events for convenience
Edit/write tools attach structured diff metadata. ACP server uses real
ToolCallIDs. Extension and SDK events kept in sync with matching fields.
- Add ToolOption/WithWorkDir functional options pattern to internal/core
- Update all 7 tool constructors to accept ...ToolOption and resolve
paths relative to the configured working directory
- Create pkg/kit/tools.go with public exports: individual constructors,
bundles (AllTools, CodingTools, ReadOnlyTools), and WithWorkDir
- Add CoreTools field to AgentConfig/AgentCreationOptions so callers
can inject custom tool sets instead of hardcoding core.AllTools()
- Add Tools field to kit.Options and GetTools() to kit.Kit
- Fully backward compatible: no-arg calls use os.Getwd() as before
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.
Ed Zynda