gacli

Full-featured CLI for Google Analytics 4 — Data API + Admin API. Reports, realtime, funnels, cohorts, audience exports, property management, streams, custom dimensions/metrics, key events, audiences, integrations (Firebase, Google Ads, BigQuery). Also ships an MCP server so any LLM client (Claude Desktop, Cursor, Cline, Zed) can call it as a tool, plus an interactive explore REPL for browsing metric/dimension catalogs.

AI assistant integration. gacli ships native skill packages for Claude Code, Codex, Qwen Code, and Gemini CLI. After install, deploy with one command — your agent becomes an expert gacli operator immediately:

gacli skills install --agent claude --scope user
# or: --agent codex / qwen / gemini / all

Full guide: extensions/README.md.

Setup

Install from npm:

npm install -g @nalyk/gacli

Verify the install was built from this exact GitHub repo at the published commit (via npm provenance / Sigstore attestation):

npm audit signatures

Or build from source:

pnpm install && pnpm build && pnpm link --global

Requires Node.js >= 22.

Updating an existing install

# See what's installed and what's available
npm view @nalyk/gacli version            # latest published version
gacli --version                          # your current version

# Upgrade in place (most users)
npm install -g @nalyk/gacli@latest

# Pin to a specific version
npm install -g @nalyk/gacli@1.2.3        # adjust to taste

# Pre-release channel (semantic-release publishes here from the `next` branch)
npm install -g @nalyk/gacli@next

# Verify the new install is signed by the GitHub repo
npm audit signatures

After upgrading, re-run gacli skills install --agent <agent> so any new or updated skill content lands in your AI CLI's skill directory. The skill files are versioned with gacli — installing a fresh gacli does NOT auto-refresh already-deployed skills. Pass --force to overwrite without prompting:

gacli skills install --agent all --force

Authentication

gacli supports two authentication methods: OAuth 2.0 (interactive) and service account (JSON key file).

OAuth 2.0 (recommended for personal use)

1. Create a Desktop OAuth client in Google Cloud Console
2. Download the client_secret_*.json file
3. Run:

gacli auth login --client-secret-file ./client_secret.json

This opens a browser-based consent flow and saves tokens to ~/.gacli/oauth-tokens.json.

To save the client secret path for future use:

gacli config set oauthClientSecretFile /path/to/client_secret.json
gacli auth login

Service account

Set credentials via one of:

1. GOOGLE_APPLICATION_CREDENTIALS environment variable
2. gacli config set credentials /path/to/service-account.json

Auth priority

OAuth tokens (if present) > service account file > environment variable.

Managing auth

gacli auth status              # Show active auth method
gacli auth logout              # Remove saved OAuth tokens
gacli auth logout --revoke     # Revoke token at Google, then remove

Scopes: analytics.readonly, analytics.edit.

Global options

Flag	Description
-p, --property <id>	GA4 property ID (overrides config/env)
-f, --format <fmt>	table (default), json, ndjson, csv, chart
-o, --output <file>	Write output to file
--no-color	Disable colors
-v, --verbose	Verbose logging

Property ID resolution: --property > config.property > GA4_PROPERTY_ID env var.

Quick start

# Set default property
gacli config set property 371981488

# Simple report — activeUsers by day, last 7 days
gacli report run -m activeUsers -d date

# Same report as JSON
gacli report run -m activeUsers -d date -f json

# NDJSON — one row per line, ideal for jq pipelines
gacli report run -m sessions -d country -f ndjson | jq 'select(.sessions | tonumber > 100)'

# CSV for spreadsheets
gacli report run -m sessions -d country -f csv -o report.csv

# ASCII chart in terminal
gacli report run -m sessions -d date --start-date 30daysAgo -f chart

# Realtime
gacli report realtime -m activeUsers -d country

# List accounts
gacli admin accounts list

# List properties
gacli admin properties list --account 232284173

# Metadata — search dimensions
gacli metadata get --type dims --search "page"

# Dimension/metric compatibility check
gacli metadata check-compatibility -m sessions -m totalUsers -d country -d deviceCategory

# Top 10 pages by sessions
gacli report run -m sessions -d pagePath --order-by "metric:sessions:desc" --limit 10

# Custom dimensions
gacli admin custom-dimensions list

# Audience export, blocking until done
gacli audience export create --audience properties/371981488/audiences/12345 --watch

# Browse the metric/dimension catalog interactively
gacli explore

# Run as an MCP server (stdio) — see MCP.md
gacli mcp serve

# Current config
gacli config list

Command structure

gacli
  auth login|logout|status
  report run|batch|pivot|batch-pivot|realtime|funnel|cohort
  metadata get|check-compatibility
  audience export create|get|list|query
  audience recurring create|get|list
  admin accounts list
  admin properties list|get|create|update|delete
  admin datastreams list|get|create|update|delete
  admin custom-dimensions list|get|create|update|archive
  admin custom-metrics list|get|create|update|archive
  admin key-events list|get|create|update|delete
  admin audiences list|get|create|update|archive
  admin access-bindings list|get|create|update|delete
  admin firebase-links list|get|create|delete
  admin google-ads-links list|get|create|update|delete
  admin bigquery-links list|get|create|delete
  config set|get|list
  explore
  mcp serve

Output formats

Format	Usage
table	Colored ASCII table (default)
json	{rowCount, data:[{...}]} shape — pipe to jq
ndjson	One JSON object per line, newline-separated — clean piping into jq -c, ClickHouse, BigQuery loads
csv	Properly escaped CSV, import into spreadsheets
chart	ASCII bar chart in terminal

Filters

Shorthand: field==value, field!=value, field=~regex, field>100, field>=100, field<100, field<=100.

gacli report run -m sessions -d country --dimension-filter "country==US"
gacli report run -m sessions -d pagePath --dimension-filter "pagePath=~/blog/"
gacli report run -m sessions -d date --metric-filter "sessions>100"

Multiple filters are combined with AND.

Configuration

Stored in ~/.gacli/config.json.

Key	Description
credentials	Path to service account JSON file
property	Default GA4 property ID
format	Default output format
noColor	Disable colors (true/false)
verbose	Verbose logging (true/false)
oauthClientSecretFile	Path to OAuth client secret JSON file

Environment variables

Variable	Default	Effect
GA4_PROPERTY_ID	—	Default property when neither --property nor config.property is set
GOOGLE_APPLICATION_CREDENTIALS	—	Path to service-account JSON; lowest-priority auth source
GACLI_VERBOSE	0	When 1, error stack traces are printed alongside the human-readable error
GACLI_MAX_RETRIES	3	Max retries on retriable gRPC errors (codes 8 quota, 14 unavailable). Other errors never retry
GACLI_RETRY_BASE_MS	500	Base delay for exponential-backoff-with-jitter; capped at base * 2^attempt

Model Context Protocol

gacli mcp serve

Starts a stdio MCP server exposing four read-only tools — gacli_report_run, gacli_report_realtime, gacli_metadata, gacli_check_compatibility — to any MCP client. The server reuses gacli's existing auth chain, retry policy, and property resolution.

Wire-up examples for Claude Desktop, Cursor, Cline, and Zed are in MCP.md, including how to pin different properties per client via the env block.

Interactive explore

gacli explore

Loads the property's metric and dimension catalog and drops into a REPL with list, search, show <apiName>, custom, and help commands. Tab-completion is available on show <apiName>. Useful when you don't remember field names.

Development

pnpm install
pnpm verify        # lint + type-check + test + skill-lint + build
pnpm test:watch    # vitest watch mode
pnpm dev <args>    # run from source (no build step)

Lint/format is Biome, tests are Vitest. The CI workflow runs pnpm verify on Node 22 and Node 24 for every push and PR.

Release automation

Releases are fully automated by semantic-release on every push to main. There is no manual tag, no manual npm publish, no manual version bump anywhere — package.json, CHANGELOG.md, the git tag, the npm publish, and the GitHub Release all fall out of one workflow run.

Commit message → release type (Conventional Commits):

Commit prefix	Release
feat: …	minor (1.1.0 → 1.2.0)
fix: …, perf: …, refactor: …	patch (1.1.0 → 1.1.1)
docs(readme): …	patch
chore:, docs:, test:, ci:, build:, style:	no release
Any commit with BREAKING CHANGE: in the body	major (1.1.0 → 2.0.0)

The flow:

1. You push a feat: or fix: commit to main.
2. .github/workflows/release.yml runs the full verify gate.
3. It packs the tarball and smoke-tests npm install -g <tarball> locally.
4. It runs semantic-release which:
   • Determines next semver from commits since the last tag.
   • Bumps package.json and prepends CHANGELOG.md.
   • Commits both back to main as chore(release): vX.Y.Z [skip ci].
   • Tags vX.Y.Z and pushes.
   • Publishes to npm via OIDC trusted publishing (no NPM_TOKEN).
   • Creates the GitHub Release with auto-generated notes + the .tgz asset.
5. It smoke-tests the live npm version end-to-end.

The [skip ci] marker on the release commit prevents the workflow from re-triggering itself; the workflow also short-circuits on any commit whose message starts with chore(release):.

Pre-release channels: push to a next or beta branch instead of main to publish to the corresponding npm dist-tag (@nalyk/gacli@next).

Branch protection requirement. semantic-release pushes the bump commit back to main. Configure the main branch protection rule (Settings → Branches → main) to allow GitHub Actions / repository administrators to bypass required PRs and required status checks. Without that, the @semantic-release/git step fails with HTTP 403.

Documentation

File	Purpose
README.md	This file — user setup and quick reference
help.md	Verbose human-readable command reference (every flag, every example)
MCP.md	MCP server setup for Claude Desktop, Cursor, Cline, Zed
PUBLISHING.md	npm release process — OIDC trusted publishing, bootstrap, ongoing flow
DISTRIBUTION.md	Single-binary (Node SEA) build notes; multi-platform release tradeoffs
CONTRIBUTING.md	How to contribute, the verify gate, architectural rules
SECURITY.md	Security policy, vulnerability disclosure, hardening notes
LICENSE	MIT
CLAUDE.md	Conventions Claude follows when working in this repo

Tech stack

Node 22+, ESM-only TypeScript 6, Commander 14, @google-analytics/data v5 + /admin v9, google-auth-library v9, @modelcontextprotocol/sdk 1.x, zod, ora, chalk, cli-table3, boxen. Dev: Vitest, Biome, tsx.