SKILL.md
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Optional MCP tools (when configured):
get-environments-- list environments for a project; the response includes SDK keys, client-side IDs, and mobile keys per environment. Use this as the single source for all key types -- do not make separate requests for individual keys.
create-feature-flag-- create the boolean flag for [Step 6: Create Your First Feature Flag](#step-6-create-your-first-feature-flag).
update-feature-flag-- toggle or patch flag configuration during Step 6; see Create first feature flag for ldcli/API fallbacks.
Other MCP tools you may use if present (not required): list-feature-flags, get-feature-flag, get-flag-status-across-environments.
Agent Behavior Directives
Source Attribution
The signup URL used throughout onboarding includes a source query parameter for attribution. The default value is agent, producing https://app.launchdarkly.com/signup?source=agent. However, the source is dynamic based on the user's original prompt:
- If the user's initial message (the prompt that triggered onboarding) contains the marker **
source-launchdarkly, set the source toldwebsite** →https://app.launchdarkly.com/signup?source=ldwebsite.
- Otherwise, keep the default source **
agent** →https://app.launchdarkly.com/signup?source=agent.
Detect this once at kickoff (before Step 0) by scanning the user's original message for the substring source-launchdarkly. Store the resolved signup URL for the session and use it wherever this skill or any nested skill directs the user to sign up. The marker is metadata for the agent — do not echo it back to the user or include it in any user-facing output.
Progress Tracking
The roadmap (Steps 0-6 + follow-through) MUST be tracked using your agent's native task-tracking tool in addition to the onboarding log file.
- Cursor: Use
TodoWriteto create a todo for each step before beginning work. Update status as each step completes.
- Claude Code: Use
TaskCreateto create a task for each step (orTodoWriteif native tasks are unavailable).
- Other agents: If your agent provides a native task list or progress tracking tool, use it. If not, present a numbered checklist in chat and update it after each step.
Do NOT work through steps mentally or rely solely on the LAUNCHDARKLY_ONBOARDING.md log for in-session tracking.
Decision Points
When a step requires user input to determine branching, you MUST collect the answer by calling a tool — do NOT write the question as prose text in your response.
Call the tool directly. Use the first tool from this list that
your environment provides:
AskQuestion— call it with apromptandoptionsarray
TaskAskor equivalent structured-input tool
- (fallback) If the tool call fails or no such tool exists, THEN
render the question as numbered options in text and wait.
Do NOT decide in advance whether you have the tool. Attempt the call. The tool call IS the question — do not also write the question as text.
Throughout this skill and its nested skills you will see decision-point markers formatted like this:
**D1 -- BLOCKING:** <instruction to call your question tool>
- question: "<the question>"
- options:
- "<option A>" -> <what happens>
- "<option B>" -> <what happens>
- STOP. Do not continue until the user selects an option.
These are instructions for you to follow, not content to display. When you reach one: make the tool call (or render numbered options if no tool exists), then STOP and wait. Do NOT copy the marker text into your response.
User-Facing Communication
Every reply during onboarding must sound like a friendly, knowledgeable colleague walking someone through setup — not a workflow engine quoting internal instructions. Follow these rules in all user-facing output:
Required response structure. Every substantive onboarding reply must include:
- What we just did — one or two sentences summarizing the completed action and its result.
- What we're doing next — a plain-English preview of the next step.
- What you need to do (only when the user has a manual action) — a concrete instruction, not a vague label like "Your turn." Include where to perform the action (e.g. "in Cursor's integrated terminal," "in the project folder," "in your browser," "in macOS Terminal").
Forbidden in user-facing output:
- Internal decision-point IDs (D1, D5, D7, etc.), step numbers as labels (e.g. "Step 5 -- detect"), or skill file names (e.g. "sdk-install/apply/SKILL.md").
- Quoting or paraphrasing raw skill instructions, directive headings, or markdown from these files.
- Workflow-engine language ("BLOCKING," "STOP," "call your structured question tool," "proceed to the next nested skill").
When telling the user to run a command, always say where to run it. Good examples:
- "Run this in the integrated terminal in your editor"
- "Run this from the project root in your terminal"
- "Open a terminal in the
packages/apifolder and run …"
Bad: "Run npm install" (without location context).
Tone: Friendly, conversational, and confident — like a knowledgeable colleague, not a manual. Use first person naturally (e.g. "I just detected that the flag was created, now I'm going to …"). Assume the reader is an engineer so don't over-explain basic concepts (what a package manager is, what an environment variable does), but do explain LaunchDarkly-specific concepts briefly on first mention (what a context is, what an SDK key is for, why there are different key types).
Step Execution Rules
Do NOT treat the user's initial request (e.g. "onboard me," "set up LaunchDarkly") as blanket permission for file writes, installs, or configuration changes. Each action that modifies the repo, installs packages, or writes secrets requires its own consent at the step where it occurs.
Blocking decision points (you MUST halt and wait for the user's response before continuing):
ID
Location
Question
D4-LOCAL
Step 4 (local MCP)
User chooses whether to handle the access token themselves (recommended) or let the agent help
D5-NOAPP
Step 5 -- detect
No runnable app found: user points to app or requests demo
D5-UNCLEAR
Step 5 -- detect
Weak evidence: user confirms the correct app folder
D5
Step 5 -- detect
SDK confirmation / one-vs-both-SDKs scope choice
D7
Step 5 -- apply
User chooses how secrets are set up: user-specified location, user handles it, or .env fallback. If user cannot provide keys, offer signup link.
D8
Step 5 -- apply
Approval before changing non-LaunchDarkly dependencies
D9
Step 6
Auth errors (401/403): stop, do not retry automatically
Non-blocking (you may proceed automatically): Steps 0-3 (log, explore, detect agent, install skills -- no user input needed), D6 plan preview (present and continue unless user objects), Step 5 detect (file reads only), compile check (Step 5 apply Step 4), follow-through file writes (LAUNCHDARKLY.md, editor rules).
Core Principles
-
Detect, don't guess: Inspect the repo for language, framework, and package manager.
-
Minimal changes: Add SDK code alongside existing code; don't restructure the project.
-
Match existing patterns: Follow env vars, config files, and initialization patterns already in use.
-
Validate end-to-end: Confirm the SDK is connected before treating the first flag as proof of success.
-
Paper trail: Keep the Step 0 onboarding log current so another agent or session can continue without re-deriving context.
-
Orient the user first: On a fresh onboarding request, show the [Kickoff roadmap](#kickoff-onboarding-roadmap) before substantive work so the user knows the full arc.
-
Defer credential questions: Do not ask about account status or keys upfront. Account status is inferred through MCP OAuth (Step 4) or surfaced at D7 (Step 5) when keys are needed. Ask for SDK keys / tokens only in Step 4-5 when that step's skill says they are required ([Prerequisites](#prerequisites)).
-
Deep-link to the dashboard: When generating LaunchDarkly dashboard URLs and the project key and/or environment key are known (from MCP tools, user input, or the onboarding log), construct the most specific URL possible instead of linking to a generic page. Use these patterns:
What you need to show
URL pattern
Project flags list
https://app.launchdarkly.com/projects/{projectKey}/flags
Specific flag
https://app.launchdarkly.com/projects/{projectKey}/flags/{flagKey}
Environment keys / SDK keys
https://app.launchdarkly.com/projects/{projectKey}/settings/environments/{envKey}/keys
Project environments list
https://app.launchdarkly.com/projects/{projectKey}/settings/environments
All projects
https://app.launchdarkly.com/projects
Only generate deep links when the required keys are known from tool responses or confirmed user input. If they are unknown, use the most specific generic path available and tell the user how to navigate from there (e.g. "Open your project in the LaunchDarkly dashboard, then go to Settings > Environments to find your SDK key").
Kickoff: onboarding roadmap
When the user invokes this onboarding flow (for example by asking you to follow this skill, run LaunchDarkly onboarding, or set up feature flags in the project), treat it as a fresh kickoff unless you are clearly resuming (see Resuming below).
Kickoff sequence (new run — before any numbered step)
Perform these in order in the same assistant turn, then proceed directly into Steps 0-3:
- Task list: Call your native task tool ([Progress Tracking](#progress-tracking)) and create one task per step for Steps 0 through 6 (seven tasks minimum — one each for Steps 0, 1, 2, 3, 4, 5, and 6, even though Steps 0-3 are grouped as a single row below). Do this before rendering the roadmap so progress tracking is in place.
- Roadmap: Give the user a brief, friendly preview of what you are about to do. Keep it conversational -- a short paragraph or a compact list is fine. Do not render a large table by default (the table below is your internal reference). The user should understand the arc (explore the project, set up tooling, install the SDK, create a first flag) without seeing step numbers or internal labels.
- Begin Steps 0-3 immediately. These steps do not require a LaunchDarkly account or any user action. Run them in the background and surface only the results: what you found (language, framework, agent) and what you installed (companion skills). Do not narrate each step as a separate heading -- summarize them together when presenting findings to the user. Account status is inferred later (see [Prerequisites](#prerequisites)).
- Resuming: When the user says "continue LaunchDarkly onboarding" (or similar), **always check for
LAUNCHDARKLY_ONBOARDING.mdfirst**. If it exists:
- Read the log to understand current state (completed steps, blockers, next step)
- Show a brief "where we are" summary (e.g. "I see we finished MCP setup — next is SDK installation")
- Refresh your task list to match the log's checklist
- Continue from the log's Next step — do not restart from Step 0
Step
What happens
You get
0-3 -- Setup
Create onboarding log, explore project, detect agent, install companion skills (npx skills add from launchdarkly/ai-tooling)
Stack summary, agent ID, launchdarkly-flag-* skills available
4 -- MCP
Configure LaunchDarkly MCP; user enables server; agent probes for tools
MCP tools (or ldcli/API fallback); account confirmed via OAuth
5 -- SDK install
detect -> plan -> apply (sdk-install)
Packages + init wired to env vars
6 -- First flag
Create boolean flag, evaluate, toggle, add interactive demo (first-flag)
End-to-end proof + visible "wow" moment
Follow-through
LAUNCHDARKLY.md, editor rules (1.8-summary, 1.9-editor-rules)
Durable docs for the repo
After presenting the roadmap preview, proceed directly into Steps 0-3 (they require no user input or account). Then continue with [Step 4](#step-4-configure-the-mcp-server).
Workflow
Follow Steps 0-6 in order unless an Edge case says otherwise. When Step 6 (first flag) completes successfully, continue with [Default follow-through](#default-follow-through-not-numbered-steps).
Steps 0-3: Setup (run silently -- do not narrate each step)
These four steps run automatically without user input. Perform them all, then present a single summary of what you found and what you set up. Do NOT show individual step headings, log-creation messages, or install output to the user.
Step 0: Onboarding log. Create or refresh LAUNCHDARKLY_ONBOARDING.md silently.
- Look for an existing log at the repo root:
LAUNCHDARKLY_ONBOARDING.md. If the project keeps docs underdocs/, preferdocs/LAUNCHDARKLY_ONBOARDING.mdwhen that folder already exists and the root file is absent.
- Create or update the log file directly without asking for permission.
- If resuming: read the log first, align with the stated next step, and only redo work the log marks incomplete or invalid.
- What to write (update after each numbered step finishes or when something important changes):
- Checklist: Steps 0-6 with status (
not started/in progress/done/skipped+ brief reason).
- Context: coding agent id (once known), language/framework summary, monorepo target path if any, LaunchDarkly project key and environment key when known (never paste secrets or full SDK keys -- say "stored in env" or "user provided offline").
- MCP: configured yes/no, hosted vs fallback, link to config path if relevant.
- Commands run: e.g.
npx skills add ...(no secrets).
- Blockers / errors: what failed and what was tried.
- Next step: single explicit step number and name (e.g. "Step 5: Install and Initialize the SDK").
- After errors: append or edit the log with what broke and where you are resuming.
This file is a working log during onboarding. After success, it is deleted and replaced with LAUNCHDARKLY.md (Onboarding Summary).
Step 1: Explore the project. Understand what you are integrating.
- Identify language and framework. Check dependency files:
package.json,go.mod,requirements.txt/pyproject.toml/Pipfile,pom.xml/build.gradle,Gemfile,*.csproj/*.sln,Cargo.toml, etc.
- Check for existing LaunchDarkly usage. Search for
launchdarkly,ldclient,ld-client,LDClient,@launchdarkly.
- If already present: note SDK version and patterns; you may shorten or skip [Step 5](#step-5-install-and-initialize-the-sdk) per edge cases.
- If not present: plan full SDK setup.
- Identify environment type: server-side app, client SPA, mobile, edge, etc. -- this drives SDK choice.
Deep detection details: Detect repository stack (nested under sdk-install).
Step 2: Detect the agent environment. Infer silently -- do not ask the user.
- Check for indicators (in priority order — stop at the first strong match):
- Cursor:
.cursor/,.cursorrules, orCURSOR_env vars
- Claude Code:
~/.claude/,CLAUDE.md, orCLAUDE_env vars
- Windsurf:
.windsurfrules
- GitHub Copilot:
.github/copilot/
- Codex:
~/.codex/,AGENTS.md
- If multiple indicators are present, pick the one whose runtime you are currently executing inside. If none match, default to the agent whose tool surface you observe at runtime.
- Remember the agent id for Step 3 (e.g.
cursor,claude-code).
Step 3: Install companion skills. Install flag-management skills from the public repo so later steps can delegate when appropriate.
npx skills add launchdarkly/ai-tooling --skill launchdarkly-flag-create launchdarkly-flag-discovery launchdarkly-flag-targeting launchdarkly-flag-cleanup -y --agent <detected-agent>
Replace <detected-agent> with the value from Step 2. Confirm success; skip skills already installed.
Bundled vs public: Orchestration and setup for this flow live in this folder -- parent SKILL.md, nested mcp-configure, sdk-install (detect / plan / apply), first-flag, and references/ (SDK recipes, snippets, summary, editor rules, etc.). The command above installs flag-management skills from the public launchdarkly/ai-tooling repo only.
After Steps 0-3 complete: Present a single summary to the user covering what you found (language, framework, environment type, whether LD is already integrated, detected agent). Then proceed to [Step 4](#step-4-configure-the-mcp-server).
Step 4: Configure the MCP Server
Hand off to mcp-configure/SKILL.md for setup (hosted MCP, quick install, manual JSON, agent authorization).
MCP setup requires the user to act outside the agent (clicking a quick-install link, completing OAuth, enabling the server in editor settings). After presenting the instructions, tell the user to enable the server and complete OAuth. Then probe for MCP tools immediately — a restart may not be required in Cursor or Claude Code.
Auto-verify: After the user confirms they've enabled the server, probe for MCP by calling a lightweight MCP tool such as list-feature-flags with the known project key. If the tool responds normally, MCP is live — note it in the onboarding log and use MCP tools for later steps. If the call fails or no MCP tools are visible, update the onboarding log first (so a new session can resume), then suggest a restart with clear instructions: tell the user to say "continue LaunchDarkly onboarding" when they come back. If restart doesn't help, fall back to ldcli/API for Steps 5-6 and note the fallback in the onboarding log. Do not ask the user whether MCP is working — find out by trying it.
Do not duplicate MCP procedures in this file. Do not block Step 5 indefinitely on MCP.
Step 5: Install and Initialize the SDK
If the project already has LaunchDarkly installed and initialized (see detect decision tree), skip to [Step 6: Create Your First Feature Flag](#step-6-create-your-first-feature-flag).
Otherwise hand off to LaunchDarkly SDK Install (onboarding), which runs nested skills in order: Detect repository stack -> Generate integration plan -> Apply code changes, using SDK recipes and SDK snippets. If the user asked for both server and client (e.g. API + SPA, Next.js server + browser), follow Dual SDK integrations through plan and apply so both SDKs are really installed and initialized.
Blocking decision points inside Step 5 (see nested skills): D5 (SDK scope), D7 (secret consent), D8 (dependency changes). Do NOT batch tool calls across these boundaries. D6 (plan preview) is non-blocking -- present the plan and continue unless the user objects.
Step 6: Create Your First Feature Flag
Create and evaluate a boolean flag; toggle and observe end-to-end.
- Follow Create first feature flag.
- If the **
launchdarkly-flag-createskill (installed in Step 3) is available, you may use it for create/evaluation wiring only** while still completing the verify/toggle checklist in Create first feature flag. Onboarding must remain completable without it.
Install or refresh flag skills via:
npx skills add launchdarkly/ai-tooling --skill launchdarkly-flag-create -y --agent <detected-agent>
See D9 in first-flag for the blocking stop on auth errors.
Default follow-through (not numbered steps)
Do these when finishing onboarding -- same session when possible. They are documentation and handoff tasks, not repeats of Steps 0-6. Do not skip this section -- it is the primary deliverable the user keeps after onboarding.
**Setup summary (LAUNCHDARKLY.md) -- REQUIRED**
Generate the repo summary per Onboarding Summary. Write it directly -- this is part of the onboarding workflow. The generated LAUNCHDARKLY.md must include all of the following (see template in that reference):
- SDK Details -- which SDK(s) are installed, package names, key types, initialization files
- Configuration -- env var names, how secrets are managed, bundler-specific conventions
- Where to Find Things -- dashboard links with real project key substituted
- How Feature Flags Work -- a language-specific code example showing flag evaluation in this project's stack (not a generic snippet -- use the same pattern the agent wired during Step 5)
- Next Steps / Advanced Capabilities -- links to Percentage Rollouts, Targeting Rules, Experimentation, AI Configs, Guarded Rollouts, and Observability
- AI Agent Integration -- MCP server setup for continued agent-driven flag management
This is not the same file as LAUNCHDARKLY_ONBOARDING.md. The onboarding log is a working checklist; LAUNCHDARKLY.md is the permanent reference for the team.
Clean up the onboarding log: After writing LAUNCHDARKLY.md, delete LAUNCHDARKLY_ONBOARDING.md (or docs/LAUNCHDARKLY_ONBOARDING.md if that was the location used). This is part of the workflow -- do not ask for permission. Removing the working log avoids confusion from having two LaunchDarkly docs in the repo.
Editor rules / skills
- Add editor-specific rules or skill hooks per Editor Rules and Skills. Write them directly -- this is part of the onboarding workflow.
Edge Cases
Situation
Action
SDK already installed and initialized (see detect decision tree)
Skip Step 5; go to Step 6 (First flag)
SDK in dependencies but not initialized
Continue Step 5 from apply / init (see sdk-install); do not skip validation
SDK state unclear
Re-run Detect repository stack, then follow its decision tree
No runnable app found or app target unclear
Follow the workspace classification in Detect: classify workspace confidence — ask the user to point to the real app or offer to create a demo. Do not proceed to plan or apply without a confirmed app target.
Multiple languages in repo
Blocking (D5): use question tool to ask which target to integrate first -- do not guess
User wants both frontend and backend (or server + browser) in the same target
Dual SDK plan: two packages, two entrypoints, two inits; apply must complete both tracks
Monorepo
Blocking (D5): use question tool to ask which package/service to integrate -- do not assume the root
No package manager detected
Blocking (D5): use question tool to ask which SDK to install; provide manual install instructions from SDK recipes
Companion flag skills already installed (Step 3)
Skip re-running npx skills add for those skill names
Resuming after a break or new agent session
Read LAUNCHDARKLY_ONBOARDING.md (Step 0); continue from Next step; refresh the log as you go
MCP configuration fails or user declines MCP
Continue with Step 5 using ldcli/API/dashboard per mcp-configure; note limitation for flag tooling
User / repo already fully onboarded
Summarize state from Step 0 log and repo; offer next steps without redoing completed steps
What NOT to Do
- Don't install an SDK without exploring the project and detecting the stack (Steps 1 and 5); keep the Step 0 log updated as you go.
- Don't upgrade, pin, or add non-LaunchDarkly dependencies (peer-deps, lockfile churn, "latest" bumps) to install or compile the SDK without explicit user approval -- see Apply -- Permission before changing other dependencies.
- Don't hardcode SDK keys in source code -- always use environment variables (see Apply code changes).
- Don't restructure the user's project or refactor unrelated code.
- Don't create flags before Step 5 (SDK install) completes.
- Don't write decision-point questions as chat text -- use your structured question tool (see [Decision Points](#decision-points)).
References
Continuity
- Step 0 --
LAUNCHDARKLY_ONBOARDING.md(working log; see [Steps 0-3](#steps-0-3-setup-run-silently----do-not-narrate-each-step))
Step 4 -- MCP (nested skill is primary)
- mcp-configure/SKILL.md -- hosted MCP, verify, edge cases (follow this first)
- MCP UI links -- HTTPS +
command:links to open MCP settings per editor
- MCP Config Templates -- per-agent JSON; **Local server via
npx** when hosted MCP is unavailable
Step 5 -- SDK install (nested skills)
- sdk-install/SKILL.md -- orchestrates detect -> plan -> apply (follow this first)
First flag (Step 6)
Default follow-through
- Onboarding Summary -- template for
LAUNCHDARKLY.md
SDK index
Public flag skills (install via Step 3)
- github.com/launchdarkly/ai-tooling --
launchdarkly-flag-create,launchdarkly-flag-discovery,launchdarkly-flag-targeting,launchdarkly-flag-cleanup