semacli 0.5.18

A CLI tool to manage Semaphore UI (ansible-semaphore) via HTTP REST API

semacli

A CLI tool to manage Semaphore UI (ansible-semaphore) via its HTTP REST API.

Designed for LLM/agent and automation use — deterministic commands, JSON output, exit codes.

Features

• List projects, templates, inventories, environments
• Launch and monitor tasks
• Read task output
• JSON output support
• Bearer-token authentication (User Settings → API Tokens)

Installation

# From PyPI
pip install semacli

# From source
pip install git+https://github.com/lduchosal/semacli.git

# Development
git clone https://github.com/lduchosal/semacli.git
cd semacli
pdm install

Quick Start

Configuration

Create semacli.ini in the current directory or ~/.semacli.ini:

[semaphore]
url = https://monitor.example.com/semaphore
project = 1

[auth]
method = bearer_token
bearer_token = your-api-token-here

[settings]
timeout = 30
verify_ssl = true

Get a bearer token from the Semaphore UI: User Settings → API Tokens → Create.

Basic Usage

# Ping the API
sem ping

# List projects
sem projects

# (more commands wired in as the CLI grows)

Output Options

# JSON output
sem projects --json

# Verbose debugging
sem projects -v
sem projects -vv
sem projects -vvv

Configuration Options

Authentication Methods

Bearer token (recommended)

[semaphore]
url = https://monitor.example.com/semaphore

[auth]
method = bearer_token
bearer_token = your-api-token

Bearer token from environment variable

[semaphore]
url = https://monitor.example.com/semaphore

[auth]
method = env_var
env_var = SEMAPHORE_TOKEN

TLS / system certificate store

requests ships with the certifi CA bundle and ignores the OS trust store by default. On corporate Windows machines, root CAs installed via Group Policy are therefore not trusted and you'll see SSLError: unable to get local issuer certificate against an internal Semaphore. Same trap on macOS if your corp CA only lives in Keychain.

semacli defaults to use_system_ca = auto — on (Windows) / off (macOS, Linux). Force it either way if needed:

[settings]
# use_system_ca = auto   # default: true on Windows, false elsewhere
# use_system_ca = true   # force-use OS trust store (e.g. macOS Keychain)
# use_system_ca = false  # force-use certifi bundle (e.g. cross-platform CI)

Implementation: when on, semacli calls truststore.inject_into_ssl() (via the truststore library, maintained by the urllib3 author). TLS verification stays on — only the source of trust anchors changes.

Auto-load .env (opt-in)

When method = env_var, the token must be in your shell before you run sem. Two ways to make that happen:

1. direnv (recommended for active dev) — brew install direnv + eval "$(direnv hook zsh)", then drop a .envrc (or .env with dotenv directive) in the project. Auto-loads on cd.
2. [settings] load_dotenv = true (no extra tool) — semacli reads .env next to your semacli.ini at startup. Existing shell vars always win, so the file only fills gaps.

[settings]
load_dotenv = true
# load_dotenv_file = .env   # optional; relative paths resolve against
                            # the semacli.ini directory.

# .env (gitignored, chmod 600)
SEMAPHORE_TOKEN=ninjwlgclse7_...

The file is parsed by python-dotenv, so quoting, comments, and ${VAR} interpolation all work as expected. A warning is printed if .env is group/world-readable — chmod 600 .env to silence it.

Shell hooks around sem run

Declare [hook] keys in semacli.ini to fire shell commands before/after a template run. Useful for syncing a remote repo, sending notifications, or paging on failure. Relative paths resolve against the .ini directory.

[hook]
# Aborts the run with exit 6 on non-zero. Receives env vars:
#   SEMACLI_TEMPLATE, SEMACLI_LIMIT, SEMACLI_TAGS, SEMACLI_PROJECT,
#   SEMACLI_TEMPLATE_ID, SEMACLI_CONFIG, SEMACLI_EVENT
task_run_prehook = scripts/sync-svn.sh

# Fires after watch completes (any status). Failures = warnings only.
# Also receives SEMACLI_TASK_ID and SEMACLI_STATUS.
task_run_posthook = scripts/notify.sh

# Same envelope as posthook, fires only when status != success.
task_run_failhook = scripts/page-oncall.sh

# Default 60s, applies per-hook.
timeout = 30

Pass --no-hooks on sem run to bypass them (debug / replay).

Exit Codes

Code	Meaning
0	Success
1	General error
2	Configuration error
3	Authentication error
4	API error
5	Not found
6	Hook aborted the command (pre-hook returned non-zero or timed out)

Development

# Clone and setup
git clone https://github.com/lduchosal/semacli.git
cd semacli
pdm install -G dev

# Run tests
pdm test

# Lint and format
pdm lint
pdm format

# Type check
pdm typecheck

# Build
pdm build

Architecture

semacli/
├── cli/                    # Click CLI interface
│   ├── commands/           # Individual commands
│   ├── decorators.py       # Common CLI options
│   └── handlers.py         # Error handlers
├── core/                   # Core business logic
│   ├── client.py           # Semaphore HTTP client
│   ├── config.py           # Configuration
│   ├── exceptions.py       # Custom exceptions
│   └── models.py           # Data models
└── services/               # Business services

See ARCHITECTURE.md for the wiki classification map used by ken wiki groom.

License

MIT License - see LICENSE for details.

Related Projects

• nagioscli - sibling CLI for Nagios Core (model project)