DevCtx

One command. Full project context. For AI agents.

Stop your agents from burning tokens on discovery. devctx gives Claude Code, Hermes, and any AI agent a structured snapshot of your entire dev environment in a single call.

$ devctx

{
  "services": {
    "hermes-gateway": { "port": 8642, "status": "listening", "pid": 4821 },
    "postgres-alt": { "port": 5433, "status": "listening" },
    "redis/dragonfly": { "port": 6379, "status": "listening" }
  },
  "git": {
    "hermes-agent": { "branch": "improve/cycle-13", "dirty": false, "ahead": 2 },
    "my-app": { "branch": "main", "dirty": true, "changed_files": 3 }
  },
  "deploy": {
    "railway": { "projects": [{ "name": "my-api", "id": "abc123" }] }
  },
  "env": {
    "set": ["ANTHROPIC_API_KEY", "GITHUB_TOKEN"],
    "missing": ["OPENAI_API_KEY"]
  },
  "hints": [
    "hermes-agent has 2 unpushed commit(s) on improve/cycle-13",
    "my-app has 3 uncommitted change(s)",
    "missing env vars: OPENAI_API_KEY"
  ]
}

---

Why

AI agents waste tokens discovering your environment through trial and error — checking ports, running git status on every repo, probing for services, retrying when something's down. Each discovery call re-sends the full conversation history.

devctx eliminates the discovery phase entirely.

The math

	Without devctx	With devctx
Tool calls to orient	5-15	1
Tokens on discovery	2,000-8,000+	~500
Retry loops from missing context	Common	Eliminated
Works across agents	Manual per-agent	Universal

---

Install

pip install devctx

Or install from source:

git clone https://github.com/DevvGwardo/devctx.git
cd devctx
pip install .

---

Usage

CLI

# Full snapshot (default)
devctx

# Specific sections
devctx --services          # Running services & ports
devctx --git               # Git state across repos
devctx --deploy            # Railway, DigitalOcean status
devctx --env               # Environment variable health
devctx --hints             # Agent-friendly hints only

# Options
devctx --scan-dir ~/projects --scan-dir ~/work   # Custom scan directories
devctx --check-env MY_CUSTOM_VAR                  # Check additional env vars
devctx --compact                                  # Minified JSON output

MCP Server (for Hermes, Claude Code, etc.)

devctx ships with a built-in MCP server so any MCP-compatible agent can call it as a tool.

Add to Claude Code:

claude mcp add devctx -- devctx-mcp

Add to Hermes (~/.hermes/config.yaml):

mcp_servers:
  devctx:
    command: devctx-mcp

The MCP server exposes a single tool — get_dev_context — that returns the same structured JSON as the CLI.

Note: MCP subprocesses don't inherit interactive-shell environment variables. To ensure API keys and other secrets appear in the env section, put your exports in ~/.zshenv (not ~/.zshrc), or on macOS use launchctl setenv VAR value to persist them across login and non-login shells.

In agent prompts

Add to your CLAUDE.md or agent system prompt:

At the start of every task, run `devctx` to understand the current environment.
Use the `hints` field to inform your approach before writing any code.

---

Architecture

Collectors

Collector	What it checks	How
services	Running services on known ports, Docker containers	Socket probing, lsof, docker ps
git	Branch, dirty state, ahead/behind, last commit	git CLI across scanned directories
deploy	Railway projects, DigitalOcean droplets	Config files + CLI tools
env	Presence of expected environment variables	os.environ (values never exposed)
hints	Agent-actionable insights from all of the above	Aggregation + heuristics

Adding collectors

Drop a new file in devctx/collectors/, implement a collect_*() function that returns a dict, and wire it into cli.py:snapshot(). That's it.

---

Principles

Inspired by InsForge's context engineering approach:

1. One call, full picture — No sequential discovery. The agent gets everything it needs in ~500 tokens.
2. Structured output — JSON that agents can parse, not free text that needs interpretation.
3. Hints, not just data — The hints field tells the agent what to do, not just what is.
4. Security by default — Environment variables report presence only, never values. No secrets in output.
5. Agent-agnostic — Works with Claude Code, Hermes, any MCP client, or plain bash.

---

License

MIT