makefile-agent 0.4.2

An AI agent powered by Makefile skills.

make-agent

An AI agent powered by Makefile skills. Skills extend the agent with domain-specific instructions and shell tools.

Installation

pip install makefile-agent

Requires Python 3.11+ and a working make binary. Uses Anthropic and OpenAI SDKs for model access — set the appropriate provider API key in your environment (for example ANTHROPIC_API_KEY or OPENAI_API_KEY).

Usage

make_agent [run] --model MODEL [--prompt PROMPT | --prompt-file FILE]

Flag	Default	Description
--model MODEL	— (required)	Model string (e.g. claude-opus-4-5, gpt-4o)
--skills-dir DIR	~/.make-agent/<project>/makefile/skills/	Directory containing skills
--system PROMPT	—	System prompt string (overrides SYSTEM.md discovery)
--system-file FILE	—	Read system prompt from FILE (overrides SYSTEM.md discovery)
--prompt PROMPT	—	Send a single prompt and exit (non-interactive)
--prompt-file FILE	—	Read a single prompt from FILE and exit
--disable-builtin-tools TOOLS	—	Comma-separated built-in tool names to disable, or all
--trusted-skills SKILLS	—	Comma-separated trusted skills or all; trusted skills run without confirmation
--max-tool-output CHARS	32000	Truncate tool output; 0 = unlimited
--max-tokens N	4096	Max tokens in the model response
--reasoning-effort EFFORT	medium	none|minimal|low|medium|high|xhigh
--prompt-cache	disabled	Enable Anthropic system-prompt caching
--compact-mode MODE	drop	Context compaction strategy when context window is exceeded: drop removes oldest turns; summarize replaces turns with LLM-generated summaries
--max-retries N	5	Max retries on rate-limit errors
--tool-timeout SECONDS	600	Timeout per tool call
--loglevel LEVEL	INFO	DEBUG|INFO|WARNING|ERROR|CRITICAL

Without --prompt, the agent starts an interactive full-screen REPL. Press Ctrl-D, /exit, or /quit to leave.

Interactive commands: /help, /export (save conversation to HTML), /stats (token usage totals), /exit, /quit.

Useful keys: Alt+Enter inserts a newline, Ctrl-C cancels an in-flight turn, Ctrl-T focuses transcript view, then Ctrl-P/Ctrl-N moves between turns.

Project data

All per-project data lives under ~/.make-agent/:

~/.make-agent/
└── <project-slug>/          # e.g. Users_alice_proj_myapp
    ├── history              # shell input history
    ├── makefile/
    │   ├── SYSTEM.md        # default system prompt (copied from template on first run)
    │   ├── skills/          # skill directories
    │   └── memory.db        # conversation history
    └── logs/
        └── make-agent.log

The project slug is the absolute working-directory path with the leading / stripped and remaining / replaced by _.

System prompt discovery

Priority order (first match wins):

1. --system PROMPT flag
2. --system-file FILE flag
3. ~/.make-agent/<project>/makefile/SYSTEM.md (created from a bundled template on first run)

Skills

Each skill is a directory containing a single skill.mk file.

define DESCRIPTION
Searches files for a text pattern.
endef

.PHONY: search-files

search-files:
	@grep -rn "$$PATTERN" "$$DIR" || echo "No matches found"

The agent invokes targets via make, passing parameters as environment variables ($$PARAM in a recipe becomes $PARAM for the shell). The define DESCRIPTION … endef block is required and shown by list_skills.

Skill trust and approvals

execute_skill requires confirmation when a skill is not trusted. In interactive mode, the shell prompts [Y] approve / [N] deny.

Trust sources:

• --trusted-skills all trusts all skills.
• --trusted-skills skill_name trusts all targets in that skill.

Built-in tools

Tool	What it does
list_skills	List available skills with descriptions
read_skill	Return the raw skill.mk content
execute_skill(name, command)	Run a make command against a skill's skill.mk
create_skill	Create or overwrite a skill (single skill.mk file)
validate_skill	Validate that a skill.mk exists and has a DESCRIPTION block
write_file	Write content to a file (sandboxed to the current working directory)
edit_file	Replace a string in a file (sandboxed to the current working directory)

Use --disable-builtin-tools to turn off specific tools (or all).

Safety constraints:

• write_file and edit_file are sandboxed to paths inside the current working directory.
• execute_skill blocks dangerous make options (-f/--file, -C/--directory, -I/--include-dir, --eval).

Memory

Every conversation turn is persisted to a local SQLite database (memory.db), enabled by default.

The database is created at ~/.make-agent/<project>/makefile/memory.db.

Three additional built-in tools are available:

Tool	What it does
get_recent_messages(limit, from_date, to_date)	Return recent messages in chronological order
search_user_memory(query, limit, from_date, to_date)	FTS5 keyword search over past user messages
search_agent_memory(query, limit, from_date, to_date)	FTS5 keyword search over past agent replies

FTS5 search tips — the search is keyword-based, not semantic:

• Use short keywords: "goal project" not "what is the goal of this project"
• Use OR for broader recall: "goal OR objective OR purpose"
• Stop words (the, of, is, a) are not indexed — omit them
• Fall back to get_recent_messages when you don't know which keywords to search for

Context compaction

When the context window is exceeded the agent automatically compacts conversation history and retries. Two strategies are available via --compact-mode:

• drop (default) — removes the oldest turns, keeping the most recent two.
• summarize — replaces prior turns with LLM-generated summaries, preserving more context at the cost of an extra API call.

Up to 3 compaction attempts are made before the request is aborted.

Development checks

uv run pytest
uv run ruff check make_agent/
uv run ruff format make_agent/