/configure:web-session
Check and configure a SessionStart hook that installs missing tools when Claude Code runs on the web.
When to Use This Skill
| Use this skill when... | Use another approach when... |
|---|---|
| Pre-commit hooks fail in remote sessions (tool not found) | Project has no infrastructure tooling (plain npm/pip is enough) |
just recipes fail because just, helm, terraform, or similar are absent | Tools are already available in the base image (check with check-tools) |
| Setting up a new repo for unattended Claude Code on the web tasks | Only need to set env vars — use environment variables in the web UI instead |
Auditing whether scripts/install_pkgs.sh is current and idempotent | Debugging a specific hook failure — fix the hook itself first |
| Onboarding a repo to Claude Code on the web for the first time | Project uses only standard language runtimes (python, node, go, rust) |
Context
- Install script:!
find. -name 'install_pkgs.sh' -path '*/scripts/*' - Settings hooks:!
find. -maxdepth 3 -name 'settings.json' -path '*/.claude/*' - Pre-commit config:!
find. -maxdepth 1 -name '.pre-commit-config.yaml' - Justfile:!
find. -maxdepth 1 \(-name 'justfile' -o -name 'Justfile' \) - Has helm charts:!
find. -maxdepth 3 -name 'Chart.yaml' -print -quit - Has terraform:!
find. -maxdepth 3 \(-name '*.tf' -o -type d -name 'terraform' \) -print -quit
Parameters
Parse from $ARGUMENTS:
--check-only: Report current state without creating or modifying files--fix: Apply all changes automatically without prompting--tools <list>: Comma-separated list of tool names to install (overrides auto-detection)
- Supported: helm, terraform, tflint, actionlint, helm-docs, gitleaks, just, pre-commit
Execution
Execute this web-session dependency setup:
Step 1: Detect required tools
Auto-detect which tools are needed from project signals:
| Signal | Tools needed |
|---|---|
.pre-commit-config.yaml contains gitleaks | gitleaks, pre-commit |
.pre-commit-config.yaml contains actionlint | actionlint, pre-commit |
.pre-commit-config.yaml contains tflint | tflint, pre-commit |
.pre-commit-config.yaml contains helm | helm, helm-docs, pre-commit |
Chart.yaml exists anywhere | helm, helm-docs |
*.tf or terraform/ directory exists | terraform, tflint |
Justfile or justfile exists | just |
--tools flag provided | Use that list exactly |
| Any pre-commit hook present | pre-commit |
Step 2: Check existing configuration
- Read
.claude/settings.jsonif it exists - Look for a
SessionStarthook that referencesinstall_pkgs.sh - Check
scripts/install_pkgs.shfor completeness — verify each detected tool has an install block
Report current status:
| Item | Status |
|---|---|
scripts/install_pkgs.sh exists | EXISTS / MISSING |
SessionStart hook configured | CONFIGURED / MISSING |
| Tools covered in install script | List each: PRESENT / ABSENT |
If --check-only is set, stop here and print the report.
Step 3: Build tool inventory
For each tool that needs to be installed, pin versions to match .pre-commit-config.yaml rev values where applicable. For tools not in pre-commit, use latest stable. Use this reference:
| Tool | Install method | Version source |
|---|---|---|
pre-commit | pip install pre-commit | latest |
helm | Official get-helm-3 script from raw.githubusercontent.com | latest stable |
terraform | Binary from releases.hashicorp.com (.zip) | Pin to .pre-commit-config.yaml rev or latest |
tflint | GitHub release binary (.zip) | Pin to .pre-commit-config.yaml rev |
actionlint | GitHub release binary (.tar.gz) | Pin to .pre-commit-config.yaml rev |
helm-docs | GitHub release binary (.tar.gz) | Pin to .pre-commit-config.yaml rev |
gitleaks | GitHub release binary (.tar.gz) | Pin to .pre-commit-config.yaml rev |
just | GitHub release binary (.tar.gz) | latest stable |
All download sources are compatible with the "Limited" network allowlist (github.com, releases.hashicorp.com, raw.githubusercontent.com, pypi.org).
Step 4: Create or update scripts/install_pkgs.sh
Create scripts/install_pkgs.sh with:
- Remote guard — exit immediately if not in a remote session:
if ["${CLAUDE_CODE_REMOTE:-}"!= "true"]; then exit 0 fi - Idempotency guard per tool — use
command -v <tool>before downloading:if! command -v helm >/dev/null 2>&1; then # install helm fi - Install to
/usr/local/bin— writable without sudo in the base image (runs as root). - Temp directory cleanup — use a temp dir per download, remove it after:
tmp_dir=$(mktemp -d) #... download and extract... rm -rf "$tmp_dir" unzipbootstrap — terraform and tflint ship as.zip; installunzipvia apt if absent.- One install block per tool in this order:
pre-commit,helm,terraform,tflint,actionlint,helm-docs,gitleaks,just.
Make the script executable: chmod +x scripts/install_pkgs.sh
Step 5: Update .claude/settings.json
- Read existing
.claude/settings.json(or start from{}if absent) - Add or merge the
SessionStarthook:
"hooks": {
"SessionStart": [
{
"matcher": "",
"hooks": [
{
"type": "command",
"command": "bash \"$CLAUDE_PROJECT_DIR/scripts/install_pkgs.sh\""
}
]
}
]
}- Preserve all existing
permissionsand other keys — do not overwrite them.
Step 6: Verify and summarise
Print a final summary:
Web session configuration complete
===================================
scripts/install_pkgs.sh [CREATED/UPDATED]
.claude/settings.json [CREATED/UPDATED]
Tools configured: helm, terraform, tflint, actionlint, gitleaks, just, pre-commit
Next steps:
1. Commit both files: git add scripts/install_pkgs.sh .claude/settings.json
2. Smoke-test locally: CLAUDE_CODE_REMOTE=true bash scripts/install_pkgs.sh
3. Run again to verify idempotency: CLAUDE_CODE_REMOTE=true bash scripts/install_pkgs.sh
4. Start a remote session on claude.ai/code and confirm tools are availableAgentic Optimizations
| Context | Command |
|---|---|
| Check only (CI audit) | /configure:web-session --check-only |
| Auto-fix with detected tools | /configure:web-session --fix |
| Override tool list | /configure:web-session --fix --tools helm,terraform,gitleaks |
| Smoke-test install script | CLAUDE_CODE_REMOTE=true bash scripts/install_pkgs.sh |
| Verify idempotency | CLAUDE_CODE_REMOTE=true bash scripts/install_pkgs.sh (run twice) |