feat: add --bare for running without project context - #109
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Kit reads a lot from whatever directory it starts in: AGENTS.md, skills, extensions, named agents, prompt templates and a project .kit.yml. That is right for working on a project and wrong for asking a question, and the existing off-switches are scope-blind — --no-skills and --no-extensions disable the user's own setup too. --bare disables every form of automatic discovery. Explicitly supplied values are untouched: --extension, --skill, --prompt-template, --system-prompt and @file all still apply. Core tools stay enabled and the working directory is unchanged, so --bare composes with --no-core-tools rather than deciding tool policy itself. The flag is deliberately not bound to viper. It exists to ignore project config, so letting a project .kit.yml set it would be self-defeating. Bare sessions share one store instead of the per-directory bucket, so `kit --bare -c` resumes the last bare conversation from anywhere. Adds Options.Bare to the SDK and ConfigInitOptions/InitConfigWithOptions for callers that need to skip project config discovery. InitConfig is retained unchanged.
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📝 WalkthroughWalkthroughKit adds a ChangesBare mode
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: 🔵 Low · up to Bare sessions may fail to resume persisted subagent conversations, and an SDK comment names an invalid option for disabling core tools. The PR is otherwise mergeable with explicit owner follow-up on these bounded issues. Sequence Diagram(s)sequenceDiagram
participant CLI
participant Config
participant Kit
participant Loaders
participant SessionTree
participant TUI
CLI->>Config: initialize with ConfigInitOptions.Bare
Config-->>Kit: retain home and explicit config
CLI->>Kit: initialize with Options.Bare
Kit->>Loaders: load scoped resources
Loaders-->>Kit: skip automatic directories
Kit->>SessionTree: select shared bare session bucket
Kit->>TUI: pass bare startup state
TUI-->>CLI: display no project context
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 77.78% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 45 functions across 13 files. (1 skipped: 1 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Actionable comments posted: 3
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Inline comments:
In `@internal/session/tree_manager.go`:
- Around line 1439-1444: Separate BareSessionKey from working-directory-derived
keys used by DefaultSessionDir so a normal session rooted at /__bare__ cannot
share the bare-session directory. Update the key/namespace handling consistently
in ListSessions, CreateTreeSession, and ContinueRecent, preserving bare-mode
--continue behavior while ensuring normal working-directory sessions remain
distinct.
In `@pkg/kit/kit.go`:
- Around line 1252-1266: Propagate the parent’s isolation setting when creating
child Kit instances: set childOpts.Bare from m.opts.Bare, guarding against nil
options, so bare parents prevent automatic discovery and extension loading in
children. Update the child-options construction path without changing
resumed-session lookup behavior.
In `@www/pages/cli/flags.md`:
- Around line 53-58: Update the bare-mode exclusions list in the CLI flags
documentation to include system extension directories alongside project and user
extensions, so the documented behavior accurately states that bare mode skips
all extension sources.
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cmd/root.gointernal/extensions/bare_test.gointernal/extensions/loader.gointernal/extensions/loader_test.gointernal/kitsetup/setup.gointernal/prompts/loader.gointernal/session/tree_manager.gointernal/ui/model.gopkg/kit/bare_config_test.gopkg/kit/bare_test.gopkg/kit/config.gopkg/kit/kit.gowww/pages/cli/flags.md
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12 tasks
- Major (security): propagate Bare to subagents. A bare parent built childOpts without Bare, so the child re-ran project discovery and loaded the AGENTS.md, skills and extensions the parent refused — including executing extension code from an untrusted directory. Added inheritIsolationOptions, matching the existing inheritMCPTaskOptions / inheritProviderConfig pattern so future isolation fields propagate from one place. - Minor (data integrity): separate the bare session bucket from the cwd-keyed namespace. encodeCwdForDir is lossy — "/__bare__" and "__bare__" both encode to "__bare__" — so a project directory at /__bare__ shared the bare bucket and --continue could resume the wrong conversation. Bare sessions now live in ~/.kit/bare-sessions, outside the sessions/ subtree, which makes the collision structurally impossible rather than merely unlikely. Ordinary cwds keep their existing paths. - Minor (docs): bare mode also skips system extension directories, not just project and user ones. Corrected in www/pages/cli/flags.md and the Options.Bare godoc, which had the same omission. Both code fixes have regression tests verified to fail against the previous implementation.
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Inline comments:
In `@internal/session/tree_manager.go`:
- Around line 1472-1474: Update the SessionID lookup flow around
FindSessionPathByID so bare parents also search the ~/.kit/bare-sessions bucket.
When the parent cwd represents a bare session, pass BareSessionKey into the
lookup or include that bucket in its fallback while preserving existing cwd and
regular sessions lookup behavior.
In `@pkg/kit/kit.go`:
- Around line 1262-1265: Update the comment near the core-tools option guidance
to use the public Options field name DisableCoreTools instead of NoCoreTools,
without changing the documented behavior.
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internal/session/bare_dir_test.gointernal/session/tree_manager.gopkg/kit/bare_test.gopkg/kit/kit.gowww/pages/cli/flags.md
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- www/pages/cli/flags.md
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- Minor (correctness): restore ID lookup for bare sessions. Moving the bare bucket out of ~/.kit/sessions in the previous commit fixed the cwd collision but put it beyond FindSessionPathByID, which scans only the cwd directory and the sessions/ subtree — so a subagent started in bare mode could not be resumed by SessionID. The bare bucket is now checked last, so ordinary lookups are unaffected. Fixing it in the store rather than at the call site covers every caller. The sessions/ scan no longer aborts the whole lookup when that directory is absent. - Minor (docs): Options.Bare godoc named NoCoreTools, which is not the exported field. It also named Extensions, which is not an Options field at all — extensions come from the "extension" config key / -e flag. Both corrected and linked with doc references so they stay checkable. Regression tests added for both, verified to fail against the previous implementation.
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Description
Kit reads a lot from whatever directory it starts in:
AGENTS.md, skills, extensions, named agents, prompt templates and a project.kit.yml. That is the right behaviour when working on a project and the wrong one when you just want to ask a question —cdinto an unfamiliar repo and the agent's context is shaped by it before you type anything.The existing off-switches don't cover this.
--no-skillsand--no-extensionsare scope-blind: they disable the user's own~/.agents/skillsand~/.config/kit/extensionsalong with the project's. And project.kit.ymlhas no off-switch at all, despite being the most consequential of the lot — it can definemcpServers(which spawn processes) and overridesystem-prompt.This adds a single
--bareflag that disables every form of automatic discovery. The governing rule is explicit stays, implicit goes: anything named on the command line still applies (--extension,--skill,--prompt-template,--system-prompt,@file), while anything Kit would have found on its own is skipped. Core tools remain enabled and the working directory is unchanged, so--barecomposes with--no-core-toolsrather than deciding tool policy itself.Before / after in the same repo:
Two deliberate design decisions worth reviewer attention:
--bareis not bound to viper. Every other flag can be set from a config file. This one exists to ignore project config, so letting a project.kit.ymlenable or disable it would be self-defeating. It follows the precedent of--quietand--continue, which are also package-level vars.~/.kit/sessions/__bare__bucket rather than the per-directory one. A bare session isn't tied to a directory, sokit --bare -cresumes your last bare conversation from anywhere on the filesystem.Type of Change
Checklist
go vet,gofmtandgolangci-lintclean; the 17 pre-existingmodernizehints are unchanged frommaster)go test -race ./...)Additional Information
Public SDK surface
Two additions to
pkg/kit/, both backward compatible:Options.Bare bool— disables automatic discovery for SDK consumersConfigInitOptions+InitConfigWithOptions(opts)— config loading with control over project-directory discoveryInitConfig(configFile, debug)is unchanged and keeps its existing behaviour; it now delegates to the same internal path withbare=false. No deprecation needed.Internal API changes
extensions.LoadExtensionsScoped(paths, bare)added;LoadExtensions(paths)retained as a wrapperprompts.LoadOptions.Barefield addedsession.BareSessionKeyconstant addedkitsetup.AgentSetupOptions.Barefield addedFiles
Added
pkg/kit/bare_test.go— 4 tests over the composed system promptpkg/kit/bare_config_test.go— 3 tests over config discoveryinternal/extensions/bare_test.go— 2 tests over extension path discoveryModified
cmd/root.go— flag registration,kit.Optionswiring, prompt-template and file-watcher gatingpkg/kit/kit.go—Options.Bare, gating for context files / skills / agents,environmentSectionhelper, bare session bucketpkg/kit/config.go—ConfigInitOptions,InitConfigWithOptions, project config-path gatinginternal/extensions/loader.go— scoped discovery, split intodiscoverExtensionDirs/appendExplicitExtensionPathsinternal/prompts/loader.go—Bareoption gating the three discovery directoriesinternal/session/tree_manager.go—BareSessionKeyinternal/kitsetup/setup.go— threadsBareinto extension loadinginternal/ui/model.go— splash reportsbare — no project contextinternal/extensions/loader_test.go— updated for the newdiscoverExtensionPathssignaturewww/pages/cli/flags.md— new Context section documenting the flagTesting notes
Each behavioural test has a paired control that runs the same fixture without
--bare, so a passing assertion can't be a false positive from a broken fixture — e.g.TestBare_Disabled_LoadsProjectContextproves the test directory really does contain a loadableAGENTS.mdand skill.The primary assertion checks the composed system prompt string rather than loader internals, since that is what actually ships to the provider.
Manually verified in tmux against a live model, including an adversarial
/tmp/evil-repocontaining anAGENTS.mdinstruction override and a.kit.ymlmodel override: normal mode adopted both, bare mode adopted neither. Cross-directory session continuity (--bare -cfrom a different directory) also confirmed.Backward compatibility
No behaviour changes when the flag is absent. All existing flags, config keys and SDK entry points behave as before.
Known unrelated issue
The startup banner reports
extensions N toolsfor skill-registered tools even when no extensions are loaded (GetExtensionToolCount()returnslen(extraTools)). Reproducible onmasterwith--no-extensions --skill <path>, so it predates this change and is left alone.Summary by CodeRabbit
--baremode to start Kit without automatic project-context discovery.--bare.