development-workflow

Foundry Development Workflow

⚠️ SYSTEM INJECTION — READ THIS FIRST

If you are loading this skill, your role is Foundry app lifecycle orchestrator.

THIS SKILL OWNS THE FOUNDRY DEVELOPMENT FLOW.

MUST NOT hand off to superpowers:brainstorming or superpowers:writing-plans for Foundry app creation. Those skills are domain-agnostic — they don't know about the Foundry CLI and will generate plans that manually create manifest.yml and boilerplate files. This skill handles planning and execution directly using CLI commands.

IMMEDIATE ACTIONS REQUIRED:

1. Follow the App Creation Flow below to go from user prompt → running app
2. Use foundry apps create and related CLI commands for ALL scaffolding
3. Delegate capability-specific content to Foundry sub-skills
4. Hand-write ONLY what the CLI cannot generate (OpenAPI content, workflow logic, UI code)

CRITICAL: --no-prompt is supported by nearly all commands. Always add --no-prompt to prevent interactive prompts that cause Error: EOF in non-interactive environments. Supported commands include: apps create, apps validate, apps deploy, apps release, apps delete (also needs --force-delete, but may still prompt interactively in some CLI versions — delete via Falcon App Manager UI if it hangs), functions create, collections create, ui pages create, ui extensions create, rtr-scripts create, profile create, workflows create, and api-integrations create. When unsure, run foundry <command> --help to check. When a CLI command fails, MUST NOT fall back to mkdir — fix the command and retry.

CRITICAL: All foundry app commands MUST run from the app root directory (where manifest.yml lives). The CLI resolves manifest paths relative to os.Getwd(), not relative to the manifest's location. Running foundry apps validate, foundry apps deploy, or foundry ui run from a subdirectory (e.g., ui/extensions/my-ext/) causes doubled paths and misleading "file not found" errors. After cd-ing into a subdirectory for npm install && npm run build, always cd back to the app root before running any foundry apps * or foundry ui * command. Commands that work from anywhere: foundry version, foundry profile *, foundry apps list-deployments.

Superpowers skills MAY supplement (TDD discipline, code review) but MUST NOT replace this workflow.

This skill coordinates the full Falcon Foundry app lifecycle — from parsing requirements through scaffolding, implementation, and deployment. It delegates capability-specific work to sub-skills that know the platform details.

Decision Tree

What does the user need?

Create a new Foundry app
└── Follow the App Creation Flow below

Add a capability to an existing app
├── API integration       → api-integrations
├── Workflow              → workflows-development
├── UI page/extension     → ui-development
├── Function              → functions-development
├── Collection            → collections-development
└── Falcon API from funcs → functions-falcon-api

Implement a known pattern (pagination, enrichment, ingestion, etc.)
└── Search use-cases/*.md for matching pattern → load for context

Debug / troubleshoot      → debugging-workflows
Security review           → security-patterns
E2E testing / Playwright  → e2e-testing

App Creation Flow

Step 1: Parse Requirements

Map user requests to Foundry capabilities:

User Says	Capability	CLI Command
"API integration", "connect to X API"	API Integration	foundry api-integrations create
"workflow", "on-demand", "automate"	Workflow	foundry workflows create
"UI", "page", "dashboard"	UI Page	foundry ui pages create
"extension", "sidebar", "widget"	UI Extension	foundry ui extensions create
"function", "serverless", "backend"	Function	foundry functions create
"store data", "collection", "database"	Collection	foundry collections create

Step 1b: Check for Known Patterns

Before scaffolding, check if the user's request matches a known use case. Glob use-cases/*.md and scan the description field in each file's frontmatter. If a match is found, read the use case file for implementation context (architecture, capability order, gotchas) before proceeding.

Use cases cover common scenarios like API pagination, detection enrichment, lookup table creation, LogScale data ingestion, SOAR custom actions, and more. See use-cases/README.md for the full catalog.

Step 2: Confirm App Name and Capabilities

Always confirm the app name with the user via AskUserQuestion before creating anything. Derive a reasonable default from the user's request (e.g., "okta-integration" for an Okta API integration), then present it as the recommended option with 1-2 alternatives. Include a brief description of what will be created.

Page vs Extension disambiguation: When the user mentions "UI" without specifying "page" or "extension", ask which they want via AskUserQuestion. Offer two options: "Page" (standalone full-page view — dashboards, lists, management UIs) and "Extension" (sidebar widget embedded in detection/host/incident pages). Default to Page when running non-interactively (e.g., claude -p or test automation) since pages are the more common case.

For other decisions, prefer reasonable defaults: use React for UI, download public OpenAPI specs from vendor GitHub repos. Only ask additional clarifying questions when the prompt is genuinely ambiguous and a wrong guess would produce an unusable app.

Step 3: CLI Prerequisite Check

foundry version          # Verify CLI installed
foundry profile active   # Verify authentication

If either fails, see references/headless-operation.md for setup options (env vars, non-interactive profile creation).

Step 4: Scaffold the App

Prerequisite: User must have confirmed the app name in Step 2. Do not run this without confirmation.

foundry apps create --name "app-name" --description "description" --no-prompt --no-git
cd app-name

--no-prompt prevents interactive prompts that fail in non-interactive environments with Error: EOF. --no-git skips git initialization. The command is foundry apps create (there is no init command). If it fails, fix the command and retry — MUST NOT fall back to mkdir, which produces invalid manifest structure.

Step 5: Add Capabilities (CLI Commands)

Run in dependency order. Write spec/schema files to /tmp/ — the CLI copies them into the project and updates manifest.yml with generated IDs.

# 1. API integrations — delegate spec work to api-integrations sub-skill
#    IMPORTANT: Download specs inline with gh/curl. Do NOT spawn Explore agents for spec download.
foundry api-integrations create --name "MyApi" --description "desc" --spec /tmp/MyApi.yaml --no-prompt

# 2. Collections (names: letters, numbers, underscores ONLY)
foundry collections create --name "my_col" --schema /tmp/my_schema.json --description "desc" --no-prompt

# 3. VALIDATE EARLY — fail fast if specs or schemas are bad
foundry apps validate --no-prompt
# If validation fails, STOP. Fix the spec/schema — do not build UI on a broken backend.
# The adapt script should handle spec issues. If it didn't, improve the script.

# 4. Functions
foundry functions create --name "my-fn" --language python --description "desc" \
  --handler-name process --handler-method POST --handler-path /api/process --no-prompt

# 5. Workflows — MUST load workflows-development sub-skill before writing the spec file
foundry workflows create --name "My Workflow" --spec /tmp/My_workflow.yml --no-prompt

# 6. UI pages (standalone full-page views)
foundry ui pages create --name "my-page" --description "desc" --from-template React --homepage --no-prompt
foundry ui navigation add --name "My Page" --path / --ref pages.my-page

# 6b. UI extensions (sidebar widgets embedded in detection/host/incident pages)
# Run `foundry ui extensions list-sockets` to see available socket IDs
foundry ui extensions create --name "my-ext" --description "desc" --from-template React --sockets "activity.detections.details" --no-prompt

Fail fast: Validate right after API integrations and collections. foundry apps validate is a dry-run of deploy validation — it checks specs and schemas in seconds without building artifacts. It does NOT check workflow semantics or app name uniqueness (those are only checked on deploy). Don't validate right before deploy — deploy runs the same validation plus more. Don't manually fix spec issues — improve adapt-spec-for-foundry.py instead.

Step 6: Write Domain-Specific Content

The CLI scaffolds structure but cannot generate app logic. Delegate to sub-skills:

• OpenAPI spec → api-integrations
• Workflow YAML → workflows-development (MUST load before writing ANY workflow YAML)
• UI components → ui-development
• Function handlers → functions-development
• Collection schemas → collections-development

⚠️ MANDATORY: Load workflows-development before writing workflow YAML. The workflow format is trigger + actions with version_constraint on every action. If you attempt workflow YAML without loading the sub-skill, you WILL hallucinate an incorrect format (definition/node_types/sdk_type) that does not exist and causes deploy failures. This is a known failure mode. ALWAYS load the sub-skill first.

Step 7: Final Build and Deploy

# Build UI (required before deploy) — MUST cd back to app root afterward
cd ui/pages/my-page && npm install && npm run build && cd ../../..
# For extensions: cd ui/extensions/my-ext && npm install && npm run build && cd ../../..

# IMPORTANT: Verify you are in the app root (where manifest.yml lives) before running
# foundry apps/ui commands. The CLI resolves paths relative to cwd, not the manifest location.

# Final deploy (run ONCE, never re-deploy to check status)
foundry apps deploy --no-prompt --change-type Patch --change-log "Complete app"

# Poll deployment status — run immediately, do NOT prepend sleep
foundry apps list-deployments
# If still in progress, wait 5s then poll again:
# sleep 5 && foundry apps list-deployments

# Local UI development (deploy first if UI calls backend capabilities)
foundry ui run

Deploy once, poll with list-deployments. Running deploy multiple times creates duplicate deployments and wastes minutes.

# Release (run ONCE after deploy succeeds)
foundry apps release --change-type Patch --deployment-id <id> --notes "Release notes"

Note: There is no list-releases command. After release, check status via the App Manager URL printed in the output, or wait ~30s and proceed to testing.

foundry ui run only serves UI locally — backend capabilities (API integrations, functions, collections) resolve from the cloud. Deploy those first.

Multi-Cloud Deployment

To deploy the same app to multiple clouds (US-1, US-2, EU-1, etc.):

1. Strip all IDs before deploying to a new cloud — IDs are cloud-specific:

   yq -i 'del(.. | select(has("id")).id) | del(.. | select(has("app_id")).app_id)' manifest.yml
   

   This DELETES the keys entirely. Setting them to empty/null is NOT the same and will cause errors.

2. Switch profile to the target cloud:

   foundry profile activate --name "eu-1-profile"
   

3. Deploy and release as normal.

4. Install from App Catalog — after releasing on a new cloud, the app must be explicitly installed from the Falcon console App Catalog. It does NOT auto-install.

5. Wait for propagation — installation may take several minutes before the page URL becomes accessible. A 404 on /api2/ui-extensions/entities/pages/v1 immediately after install is normal; retry after a few minutes.

Important: Back up your manifest before stripping IDs if you want to preserve the original cloud's IDs: cp manifest.yml manifest.yml.backup

Existing App Workflow

When manifest.yml already exists, work is primarily editing existing files. Use CLI only for:

• foundry apps run / foundry ui run — local development
• foundry apps deploy / foundry apps release — deployment
• foundry api-integrations create etc. — adding new capabilities

Testing an Existing App Locally

When running e2e tests against a CrowdStrike/foundry-sample-* app on GitHub:

1. Configure credentials — copy .env.sample to .env in the e2e/ directory and fill in valid Falcon credentials (username, password, TOTP secret, base URL) and app name. APP_NAME defaults to the repo name. FALCON_ credentials must be for a non-SSO user because TOTP is used in e2e tests. This file is gitignored and required for local test runs.

2. Align the app name — the manifest name and the e2e test APP_NAME environment variable (in .env) must match for local test runs. CI pipelines typically rewrite the manifest name automatically (e.g., ${REPO}-ci-${PIPELINE_ID}), so this only affects local development. Preferred approach: update the manifest name to match the repo name (e.g., foundry-sample-logscale) to avoid spaces and simplify artifact lookup. Remember to git checkout manifest.yml after deploy to revert ID changes.

3. Deploy and release:

   foundry apps deploy --change-type Patch --change-log "e2e testing" --no-prompt
   # Poll until successful
   foundry apps list-deployments
   # Release
   foundry apps release --deployment-id <id> --change-type Patch --notes "e2e testing" --no-prompt
   

4. Run tests: cd e2e && npm test

5. Revert manifest: git checkout manifest.yml (deploy writes IDs into the manifest)

Manifest Coordination

Dependency order: Collections → Functions → Workflows → UI (each may depend on the previous)

• MUST NOT edit manifest.yml unless a deploy fails with "app name already exists" (rename only). The CLI sets path, entrypoint, scopes, and IDs correctly — manual edits cause double-path errors and wasted deploy cycles.
• MUST NOT edit vite.config.js — the React blueprint is turnkey. Do not change base, root, or noAttr(). Just edit React/JS component code and deploy.
• OAuth scopes are auto-managed for CLI-created artifacts — MUST NOT manually add api-integrations:read
• Use npx @redocly/cli lint for OpenAPI validation (not Python/Ruby YAML parsers)
• Validate early with foundry apps validate --no-prompt after adding API integrations and collections — but don't validate right before deploy (deploy runs the same checks plus more)

Reading Guide

Task	Reference
Headless/CI setup, env vars, US-GOV-1	references/headless-operation.md
Superpowers plugin coordination	references/superpowers-integration.md
Token management, performance targets	references/performance-optimization.md
Counter-rationalizations, red flags	references/counter-rationalizations.md
Lifecycle phases, manifest patterns, CLI state, app operations	references/advanced-patterns.md

Improving These Skills

If a skill gave incorrect guidance, was missing a pattern, or required extra trial-and-error to get right, the user can ask you to capture the fix at the end of the session:

What did you learn from this session that could improve the Foundry skills?
Clone https://github.com/CrowdStrike/foundry-skills.git,
create a branch, update the skills with this knowledge, and
create a PR on GitHub.

Steps Claude will handle: create a branch, update the relevant skills/*/SKILL.md, and create a PR.

This turns a one-session fix into a permanent improvement for all users.