v0.85.1

Installation

# Bun / npm
bun add -g @mark3labs/kit
# or: npm install -g @mark3labs/kit

# Go install (requires Go 1.26+)
go install github.com/mark3labs/kit/cmd/kit@latest

# Or download from assets below

Changelog

Features

• b0afae0: feat(agents): named agent definitions with per-agent tool restrictions (#84) (@ezynda3)
• 91bd928: feat(compaction): adaptive budgets, full-part token estimation, anchored summaries (#83) (@ezynda3)
• 9d14019: feat(compaction): auto-compact and retry on context overflow errors (#85) (@ezynda3)
• 6f82962: feat(hooks): expose per-step ToolChoice via OnPrepareStep (@giltine)
• a81d2cf: feat(subagent): link child sessions to parent and support resume (#87) (@ezynda3)

Bug Fixes

• e0baa37: fix(agents): deep-copy agent getters, wire --no-agents flag, clarify tools contract (#84) (@ezynda3)
• 0f18a61: fix(compaction): address coderabbit review on overflow recovery (#85) (@ezynda3)
• 11bd559: fix(compaction): preserve API token baseline after compaction (@ezynda3)
• 0b4ba98: fix(extbridge): preserve run error and fire OnComplete on nil subagent result (@ezynda3)
• 1abeca8: fix(extensions): implement non-blocking subagent spawn with usable handle (#86) (@ezynda3)
• 98e5df0: fix(session): address CodeRabbit review on subagent session linking (#87) (@ezynda3)
• b4e847f: fix(session): fsync temp file before rename in SetParentLink (@ezynda3)
• 9abd091: fix: normalize .wav MIME type to audio/wav ( <>)

Documentation

• 8e4447a: docs(agents): note allowlist intersection on SubagentConfig.Tools (#84) (@ezynda3)

Maintenance

• 3b3de18: chore(deps): update go dependencies and models.dev snapshot (@ezynda3)
• 8c0d62b: chore(deps): update go dependencies and models.dev snapshot (@ezynda3)
• eaec327: chore(prompts): add /resolve-reviews bot-review polling loop (@ezynda3)

Other Changes

• 705fcd4: perf(ui): fix memory leaks, deadlocks, and hot-path rendering costs (@ezynda3)

v0.85.0

Installation

# Bun / npm
bun add -g @mark3labs/kit
# or: npm install -g @mark3labs/kit

# Go install (requires Go 1.26+)
go install github.com/mark3labs/kit/cmd/kit@latest

# Or download from assets below

Changelog

Features

• b0afae0: feat(agents): named agent definitions with per-agent tool restrictions (#84) (@ezynda3)
• 91bd928: feat(compaction): adaptive budgets, full-part token estimation, anchored summaries (#83) (@ezynda3)
• 9d14019: feat(compaction): auto-compact and retry on context overflow errors (#85) (@ezynda3)
• 6f82962: feat(hooks): expose per-step ToolChoice via OnPrepareStep (@giltine)
• a81d2cf: feat(subagent): link child sessions to parent and support resume (#87) (@ezynda3)

Bug Fixes

• e0baa37: fix(agents): deep-copy agent getters, wire --no-agents flag, clarify tools contract (#84) (@ezynda3)
• 0f18a61: fix(compaction): address coderabbit review on overflow recovery (#85) (@ezynda3)
• 11bd559: fix(compaction): preserve API token baseline after compaction (@ezynda3)
• 0b4ba98: fix(extbridge): preserve run error and fire OnComplete on nil subagent result (@ezynda3)
• 1abeca8: fix(extensions): implement non-blocking subagent spawn with usable handle (#86) (@ezynda3)
• 98e5df0: fix(session): address CodeRabbit review on subagent session linking (#87) (@ezynda3)
• b4e847f: fix(session): fsync temp file before rename in SetParentLink (@ezynda3)
• 9abd091: fix: normalize .wav MIME type to audio/wav ( <>)

Documentation

• 8e4447a: docs(agents): note allowlist intersection on SubagentConfig.Tools (#84) (@ezynda3)

Maintenance

• eaec327: chore(prompts): add /resolve-reviews bot-review polling loop (@ezynda3)

v0.84.0

Installation

# Bun / npm
bun add -g @mark3labs/kit
# or: npm install -g @mark3labs/kit

# Go install (requires Go 1.26+)
go install github.com/mark3labs/kit/cmd/kit@latest

# Or download from assets below

Changelog

Features

• ed51910: feat(ui): warn when provider reports no token usage (@ezynda3)

v0.83.1

Installation

# Bun / npm
bun add -g @mark3labs/kit
# or: npm install -g @mark3labs/kit

# Go install (requires Go 1.26+)
go install github.com/mark3labs/kit/cmd/kit@latest

# Or download from assets below

Changelog

Bug Fixes

• 4aa786f: fix(sandbox): make nix discoverable on default PATH for all users (@ezynda3)
• e95a11c: fix(skills): route collision logs to file at info level (@ezynda3)

Maintenance

• c1e31e9: build(sandbox): add go developer tooling to sandbox image (@ezynda3)
• 3d1ca37: build(sandbox): add nix flakes and direnv to sandbox image (@ezynda3)

v0.83.0

Installation

# Bun / npm
bun add -g @mark3labs/kit
# or: npm install -g @mark3labs/kit

# Go install (requires Go 1.26+)
go install github.com/mark3labs/kit/cmd/kit@latest

# Or download from assets below

Changelog

Features

• 81e8ce3: feat(sandbox): official Kit sandbox image + GHCR workflow (#78) (@ezynda3)

Bug Fixes

• 74f1a2b: fix(cmd): avoid nil pointer panic when OAuth handler init fails (@ezynda3)
• 91ba5a9: fix(subagent): prevent duplicate MCP tool names and redundant reloads (@ezynda3)

Maintenance

• fc21d0f: build(sandbox): pre-install uv and bun in sandbox image (@ezynda3)

Other Changes

• d0437f9: test(kit): Add test for GetToolsForSubagent() (@e4t)

v0.82.1

Installation

# Bun / npm
bun add -g @mark3labs/kit
# or: npm install -g @mark3labs/kit

# Go install (requires Go 1.26+)
go install github.com/mark3labs/kit/cmd/kit@latest

# Or download from assets below

Changelog

Bug Fixes

• d99b76c: fix(agent): honor AddTools/RemoveTools mid-turn at next LLM step (#76) (#77) (@ezynda3)

v0.82.0

Installation

# Bun / npm
bun add -g @mark3labs/kit
# or: npm install -g @mark3labs/kit

# Go install (requires Go 1.26+)
go install github.com/mark3labs/kit/cmd/kit@latest

# Or download from assets below

Changelog

Features

• fc93e38: feat(ui): add /undo slash command to roll back the last turn (@ezynda3)

Maintenance

• 26df617: build(ci): bump golangci-lint-action to v8 (@ezynda3)
• 821ef11: build(deps): bump mcp-go to v0.55.1 (@ezynda3)

Other Changes

• f6d08c7: feat(pkg/kit): expose runtime add/remove of native Go tools (#74) (#75) (@ezynda3)
• be71700: test: silence SA5011 false positives after t.Fatal (@ezynda3)

v0.81.0

Installation

# Bun / npm
bun add -g @mark3labs/kit
# or: npm install -g @mark3labs/kit

# Go install (requires Go 1.26+)
go install github.com/mark3labs/kit/cmd/kit@latest

# Or download from assets below

Changelog

Maintenance

• ad9aa06: chore(deps): update dependencies and refresh embedded model database (@ezynda3)

Other Changes

• 35524b9: Always add subagent tool (#57) (@e4t)

v0.80.0

Installation

# Bun / npm
bun add -g @mark3labs/kit
# or: npm install -g @mark3labs/kit

# Go install (requires Go 1.26+)
go install github.com/mark3labs/kit/cmd/kit@latest

# Or download from assets below

Changelog

Features

• dd7ae41: feat(sdk): harden pkg/kit embedder surface with scoped additions (#69) (@ezynda3)
• cea82ea: feat(skills): full agentskills.io spec compliance (#71) (@ezynda3)

Maintenance

• bd56f4a: refactor(sdk): drop unreachable kit.AgentConfig surface (#67) (@ezynda3)

v0.79.1

Installation

# Bun / npm
bun add -g @mark3labs/kit
# or: npm install -g @mark3labs/kit

# Go install (requires Go 1.26+)
go install github.com/mark3labs/kit/cmd/kit@latest

# Or download from assets below

Changelog

Bug Fixes

• d7948a6: fix(app): make ctx.NewSession wait for agent idle (#63) (#64) (@ezynda3)

Maintenance

• a9d808e: build(deps): bump go module dependencies (@ezynda3)
• 888c6c7: chore(models): refresh embedded models database from models.dev (@ezynda3)