MCP Server Builder
anthropics/skills
Guides the design and implementation of Model Context Protocol servers in TypeScript or Python, from tool naming and error messages to evaluation.
File-based task contracts under .agents/runs/ with ownspaths, verification tiers L0/L1/L2, and solo merge rules.
$ npx skills add VKirill/claude-lane-stack --skill lane-contract -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install VKirill/claude-lane-stack lane-contract --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/VKirill/claude-lane-stack.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/lane-stack/skills/lane-contract .claude/skills/lane-contract && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "lane-contract" agent skill from https://github.com/VKirill/claude-lane-stack/tree/main/plugins/lane-stack/skills/lane-contract into .claude/skills/lane-contract/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lane-contract", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/VKirill/claude-lane-stack/tree/main/plugins/lane-stack/skills/lane-contractType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add VKirill/claude-lane-stack --skill lane-contract -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install VKirill/claude-lane-stack lane-contract --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VKirill/claude-lane-stack.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/lane-stack/skills/lane-contract .agents/skills/lane-contract && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "lane-contract" agent skill from https://github.com/VKirill/claude-lane-stack/tree/main/plugins/lane-stack/skills/lane-contract into .agents/skills/lane-contract/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lane-contract", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add VKirill/claude-lane-stack --skill lane-contract -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install VKirill/claude-lane-stack lane-contract --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VKirill/claude-lane-stack.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/lane-stack/skills/lane-contract .cursor/skills/lane-contract && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "lane-contract" agent skill from https://github.com/VKirill/claude-lane-stack/tree/main/plugins/lane-stack/skills/lane-contract into .cursor/skills/lane-contract/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lane-contract", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/VKirill/claude-lane-stack.git --path plugins/lane-stack/skills/lane-contract--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add VKirill/claude-lane-stack --skill lane-contract -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install VKirill/claude-lane-stack lane-contract --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VKirill/claude-lane-stack.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/lane-stack/skills/lane-contract .gemini/skills/lane-contract && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "lane-contract" agent skill from https://github.com/VKirill/claude-lane-stack/tree/main/plugins/lane-stack/skills/lane-contract into .gemini/skills/lane-contract/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lane-contract", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install VKirill/claude-lane-stack lane-contractInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add VKirill/claude-lane-stack --skill lane-contract -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/VKirill/claude-lane-stack.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/lane-stack/skills/lane-contract .github/skills/lane-contract && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "lane-contract" agent skill from https://github.com/VKirill/claude-lane-stack/tree/main/plugins/lane-stack/skills/lane-contract into .github/skills/lane-contract/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lane-contract", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add VKirill/claude-lane-stack --skill lane-contract -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install VKirill/claude-lane-stack lane-contract --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VKirill/claude-lane-stack.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/lane-stack/skills/lane-contract .opencode/skills/lane-contract && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "lane-contract" agent skill from https://github.com/VKirill/claude-lane-stack/tree/main/plugins/lane-stack/skills/lane-contract into .opencode/skills/lane-contract/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "lane-contract", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
lane-contractFile-based task contracts under .agents/runs/ with ownspaths, verification tiers L0/L1/L2, and solo merge rules.
Lane Contract is an agent skill from VKirill/claude-lane-stack. File-based task contracts under .agents/runs/ with ownspaths, verification tiers L0/L1/L2, and solo merge rules. Use when authoring or reviewing task YAML / the task-v2 contract (Lane Pilot plan), ownspaths, acceptance, or verification commands; $ARGUMENTS exactly info prints the card.
Its SKILL.md is about 2.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/info.md`).
It sits in Agent Workflows. The repository describes itself as: Multi-agent AI coding factory for one person — Claude Code PM + Codex/Qwen/Grok/Kimi/AGY writers, durable conveyor, auto-merge to main. The licence is MIT.
12 steps, taken from the first numbered list in SKILL.md.
Read from SKILL.md and the folder at commit 45fa19e. It shows what the files ask for, not the result of running them.
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Shell commands in SKILL.md call:
npmgitFrom the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md. Its commands use npm and git, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Lane Contract loads about 2.3k tokens when it runs, and up to ~2.7k if it reads all its reference files. Until then it costs about 77 tokens; SKILL.md has 1,015 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
The automated check noted patterns worth knowing about, such as sudo or a known installer.
ch` | Owns gate | Secrets / unrelated | `.env*` minimum |Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
The full file from VKirill/claude-lane-stack at commit 45fa19e, republished under its MIT licence (© VKirill). 1,015 words, ~2,255 tokens.
.claude/skills/lane-contract/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.Inside a Lane Pilot chat (
LANE_PILOT_AGENT_TYPEset / toolslane_pilot_*present) the contract is the task-v2 JSON in theplanoflane_pilot_dispatch_writer, and its schema is strict: exactlyschema_version,id,title,risk,lane,project_cwd,read_first,interfaces,invariants,out_of_scope,expected_outputs,owns_paths,never_touch,depends_on,objective,acceptance,verify,verification[{command, cwd, timeout_sec?}](timeout_secup to 7200). Any other field (context_selectors,impact_*,skills) makes Lane Pilot reject the whole contract: put line windows inobjectiveorinterfacesaspath:start-end. The writer RUNSverificationand Lane Pilot re-runs it at acceptance, so every task needs real verification commands. Lane Pilot owns run state;run-init,run-validate --phase,lane-ctl,run-supervisor, the L0 rule «writer does not run tests» andlane = adoc main_writebelow are the terminal Lane Stack harness.
If $ARGUMENTS is exactly info, print references/info.md verbatim (Russian), then stop. Do not write task YAML.
Canonical: FILE-CONTRACT.md, SOLO-ORCHESTRATION.md,
docs/decisions/ADR-codex-effort.md, skill orchestrator-lanes (references/decomposition.md).
run-init → fill PLAN/SPEC/tasks → run-validate --phase pre-dispatch before dispatch. owns_paths, never_touch, behavioral acceptance. read_first: existing project-relative files only. Line windows go in context_selectors. interfaces: signatures/types, or []. Product invariants / out_of_scope; never writer recovery. expected_outputs: artifact path, not “tests green”. run-supervisor per run; lane-supervisor only for typed one-shots. references/decomposition.md (one outcome per task; unlock ≠ feature). depends_on is a real compile/data edge, not narrative order node_modules, .npm-cache, build caches are never in owns never_touch covers secrets, prisma (if frozen), unrelated productsnpm run build / root npm test on multi-task runs (that is L2) timeout_sec — omit. Runtime defaults to 900s. Do not invent or bike-shed timeouts in plans verification[].command exists on disk under verification[].cwd before pre-dispatch project_cwd is a worktree: do not assume main-repo .agents/runs/... is visible — write/copy check.py into the worktree path or put tests under product tests/ in owns; absolute paths to main are rejected tests/test_*.py) over .agents/**/check.py when possible check.py under .agents/runs/<slug>/[artifacts/<id>/] (guard allowlist); not other .py, not state.json/reportsPROJECT_CWD. owns_paths. Honor never_touch. .agents. verification[]; L1 is lane-ctl verify. Report in English. Identity (must match adoc / run): schema_version, id, title, risk, lane, project_cwd.
| Field | What the machine uses | Fill | Leave empty / omit |
|---|---|---|---|
objective | Writer TZ (prompt) | One product outcome, behavior | never |
acceptance | Report + PM | Observable behavior | never |
owns_paths | Owns gate | Every path the outcome must edit | never |
never_touch | Owns gate | Secrets / unrelated | .env* minimum |
read_first | Packet files | Existing files, no notes | [] if none |
context_selectors (terminal only) | Packet line windows | {path, start_line, end_line} | omit (do not put windows in read_first) |
verification | L1 lane-ctl verify | Focused commands | [] only with verify: none |
verify | Schema only | tests / smoke / none matching L1 | do not invent a second suite |
depends_on | DAG | Real compile/data ids | [] |
interfaces | Prompt + path scrape | Signatures / type names | [] |
invariants | Prompt | Product constraints | [] |
out_of_scope | Prompt | Non-goals not already in never_touch | [] |
expected_outputs | Schema + prompt | Artifact path this task creates | one path, not “typecheck green” |
impact_receipt / impact_targets (terminal only) | Packet | Only if you captured a receipt | omit |
skills (terminal only) | Claude prompt inject | impeccable-ui on UI tasks | omit (OpenCode ignores) |
run-validate --phase pre-dispatch rejects: git checkout/restore in the YAML; read_first prose (section C4, lines 10-20); missing read_first files; CONTINUATION / Gaps / HARD RULE / wc -l / edit-tool recovery in interfaces or invariants.
No mutable status / free-form verify strings on new runs.
lane-ctl supplies hashes and path pointers from read_first and context_selectors.
Paths named in interfaces/objective (file.ts:12-40) become interface_refs.
Keep related tests in read_first as paths.
The original task remains immutable. OpenCode already loads lane-writer; the
user prompt is YAML + packet, not a second copy of the writer contract.
Writers reuse unchanged supplied code. Omit impact_receipt unless the file exists
on disk.
| Tier | Who | What |
|---|---|---|
| L0 | Writer | Code + test files; do not execute runners |
| L1 | lane-ctl verify | Task verification[] only |
| L2 | PM / CI | One full or affected suite per run |
verification.cwd must equal the task worktree/project_cwd. Relative scripts
resolve inside that tree. Main checkout .agents/runs/<slug>/artifacts/001/check.py
is not the same file asworktree/.agents/runs/<slug>/artifacts/001/check.py.
Before run-validate --phase pre-dispatch / controller start:
.agents tree is enough.run-validate fails closed if the script file is missing.
verify levels| Level | Meaning |
|---|---|
| none | Trivial / visual |
| smoke | Single cheap command |
| tests | Focused automated tests (not monorepo green) |
| Class | Policy |
|---|---|
| Pre-existing dirt outside owns | Foreign ignored (baseline / no-baseline policy) |
| New product files outside owns | Fail (writer leak or missing owns entry) |
.npm-cache, node_modules, pnpm/yarn/turbo caches | Ignored by gate — never put in owns |
never_touch hits (new) | Fail |
If owns fails with only cache paths: treat as control-plane noise, not “expand owns”.
When required (score ≥ 7 or ≥ 2 tasks), SPEC must state goal, interfaces,
invariants, out of scope, definition of done — in English, not the run-init stub.
run-validate --phase pre-dispatch rejects stubs.
© VKirill, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
SKILL.md and 1 other file (references) in plugins/lane-stack/skills/lane-contract of VKirill/claude-lane-stack.
Open the folder on GitHubat commit 45fa19e
Lane Contract next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Lane Contract this skillVKirill/claude-lane-stack | 122 | — | ~2.3k | Automated safety check: Notes | MIT | |
| MCP Server Builderanthropics/skills | 180k | 63 repos | ~2.3k | Automated safety check: Pass | Apache-2.0 | |
| Hook Development for Claude Code Pluginsanthropics/claude-plugins-official | 38k | 10 repos | ~4.1k | Automated safety check: Notes | Apache-2.0 | |
| Using Superpowersfarm-fe/farm | 5.6k | 35 repos | ~1.4k | Automated safety check: Pass | MIT | |
| Executing Plans Inlineobra/superpowers | 297k | 2 repos | ~5.1k | Automated safety check: Pass | MIT | |
| Skill CreatorAzure/azqr | 796 | 89 repos | ~8.2k | Automated safety check: Pass | Apache-2.0 |
anthropics/skills
Guides the design and implementation of Model Context Protocol servers in TypeScript or Python, from tool naming and error messages to evaluation.
anthropics/claude-plugins-official
Explains how to write Claude Code plugin hooks, both prompt-based checks and bash commands, for events such as PreToolUse, Stop and SessionStart.
farm-fe/farm
A skill your agent uses when starting any conversation - establishes how to find and use skills, requiring Skill tool invocation before ANY response including clarifying questions
obra/superpowers
Has the agent carry out an implementation plan itself, task by task in the current session, keeping a ledger, proving each step with a test and ending with one whole-branch review.
Azure/azqr
Create new skills, modify and improve existing skills, and measure skill performance.
anthropics/claude-plugins-official
Explains how to write agents for Claude Code plugins: the markdown file with YAML frontmatter, trigger descriptions, model and color settings, and system prompt design.
VKirill/claude-lane-stack
Lane-stack design + brand intelligence (vendored ui-ux-pro-max).
VKirill/claude-lane-stack
Owner-facing architect for a new app or service. An agent skill from VKirill/claude-lane-stack.
VKirill/claude-lane-stack
Live browser QA + Playwright-compatible replay. An agent skill from VKirill/claude-lane-stack.
VKirill/claude-lane-stack
Карта файлов копирайта в .agents/copy/: шаблоны, статусы, цепочка audience→headlines→ux.
VKirill/claude-lane-stack
Dispatch copy-lead helpers: Tavily, Codex luna/terra, grok/X, OpenCode DeepSeek, Cursor Grok 4.6 medium-fast.
VKirill/claude-lane-stack
Keep living docs/ honest after code changes. An agent skill from VKirill/claude-lane-stack.
Categories
File-based task contracts under .agents/runs/ with ownspaths, verification tiers L0/L1/L2, and solo merge rules. Lane Contract is an agent skill from VKirill/claude-lane-stack.agents/runs/ with ownspaths, verification tiers L0/L1/L2, and solo merge rules.
Lane Contract fits situations like: reviewing task YAML / the task-v2 contract (Lane Pilot plan); verification commands; $ARGUMENTS exactly info prints the card.
Run `npx skills add VKirill/claude-lane-stack --skill lane-contract -a claude-code`. Or copy the skill folder (plugins/lane-stack/skills/lane-contract in VKirill/claude-lane-stack) into .claude/skills/lane-contract in your project. Claude Code loads it when a task matches its description.
Run `npx skills add VKirill/claude-lane-stack --skill lane-contract -a codex`. Or copy the skill folder (plugins/lane-stack/skills/lane-contract in VKirill/claude-lane-stack) into .agents/skills/lane-contract in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add VKirill/claude-lane-stack --skill lane-contract -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/lane-contract, .gemini/skills/lane-contract, .github/skills/lane-contract and .opencode/skills/lane-contract in your project.
Going by SKILL.md and its folder, Lane Contract needs the command-line tools its instructions call (npm and git).
SKILL.md contains no URLs. Its commands use npm and git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Our automated static check of SKILL.md found notes only (mentions a .env file), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
Lane Contract is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 2.3k tokens (SKILL.md is roughly 9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 397 tokens, read only when the agent opens those files.
Skills that share tags, products or a category with Lane Contract: MCP Server Builder (anthropics/skills, 180k stars), Hook Development for Claude Code Plugins (anthropics/claude-plugins-official, 38k stars), Using Superpowers (farm-fe/farm, 5.6k stars) and Executing Plans Inline (obra/superpowers, 297k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
VKirill (a GitHub user) maintains it in VKirill/claude-lane-stack, which has 122 GitHub stars. The repository holds 49 skills in this directory. The repository was last updated on October 9, 2026.
Source: VKirill/claude-lane-stack on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.