jmdl-ai-workflows 0.3.0

Composable AI workflow framework built on LangGraph + MCP.

ai-workflows

A framework for building multi-step AI workflows that can plan, execute, validate, and recover from failures. Supports multiple models (Claude, Gemini, Ollama), human approval steps, and resumable runs with persistent state.

A LangGraph-native workflow framework for solo developers. Orchestrates multi-step AI workflows with durable state, multi-provider routing, and deterministic cost accounting across Gemini (via LiteLLM), Qwen (via Ollama), and Claude Code (via OAuth CLI subprocess).

Status

Milestone	State
M1 — Reconciliation & cleanup	Complete (2026-04-19)
M2 — Graph-layer adapters + provider drivers	Complete (2026-04-19)
M3 — First workflow (planner, single tier)	Complete (2026-04-20)
M4 — MCP server (FastMCP)	Complete (2026-04-20)
M5 — Multi-tier planner	Complete (2026-04-20)
M6 — slice_refactor DAG	Complete (2026-04-20)
M7 — Eval harness	Complete (2026-04-21)
M8 — Ollama infrastructure	Complete (2026-04-21)
M9 — Claude Code skill packaging	Complete (2026-04-21)
M10 — Ollama fault-tolerance hardening	Planned
M11 — MCP gate-review surface	Complete (2026-04-22)
M12 — Tiered audit cascade	Planned
M13 — v0.1.0 release + PyPI packaging	Complete (2026-04-22)
M14 — MCP HTTP transport	Complete (2026-04-22)
M15 — Tier overlay + fallback chains	Planned
M16 — External workflows + primitives load path	Complete (2026-04-24)
M17 — scaffold_workflow meta-workflow	Planned
M19 — Declarative authoring surface	Complete (2026-04-26)

What it is

ai-workflows exposes two surfaces over the same workflow registry: an aiw CLI for interactive and scripted use, and an aiw-mcp MCP server for Claude Code, Cursor, Zed, and browser-origin consumers (via streamable-HTTP). A workflow is a Python module that builds a LangGraph StateGraph composed of graph primitives (TieredNode, ValidatorNode, HumanGate, RetryingEdge) and registered by name. There is no hosted control plane and no Anthropic API dependency — Claude access is OAuth-only through the claude CLI subprocess.

Architecture at a glance

Four layers with a one-way dependency direction enforced by import-linter:

surfaces        (ai_workflows.cli, ai_workflows.mcp)
    ↓
workflows       (ai_workflows.workflows.*)        — concrete LangGraph StateGraphs
    ↓
graph           (ai_workflows.graph.*)            — LangGraph adapters over primitives
    ↓
primitives      (ai_workflows.primitives.*)       — storage, cost, tiers, providers, retry, logging

Full overview in docs/architecture.md. Tutorials for authoring a new workflow or extending the graph layer live at docs/writing-a-workflow.md and docs/writing-a-graph-primitive.md.

Install

Requires Python ≥ 3.12 and uv.

One-shot via uvx — no persistent install; every invocation fetches the wheel into a cache:

uvx --from jmdl-ai-workflows aiw run planner --goal 'Write a release checklist' --run-id demo

Persistent tool install — puts aiw + aiw-mcp on PATH:

uv tool install jmdl-ai-workflows
aiw run planner --goal 'Write a release checklist' --run-id demo

Getting started

After installing (either path above), set your Gemini API key and drive a planner run end-to-end:

export GEMINI_API_KEY=...
aiw run planner --goal 'Write a release checklist' --run-id demo
aiw resume demo --approve
aiw list-runs

The planner workflow composes two LLM tiers (Qwen explorer via Ollama + Claude Code Opus synth). If you only want the Gemini path for a smoke, pass --tier-override planner-synth=planner-explorer or omit the Ollama + Claude Code prerequisites and stub the gemini_flash tier.

Setup

Both aiw and aiw-mcp auto-load a .env from the current working directory at startup (shell-exported values win over .env).

Key env vars:

• GEMINI_API_KEY — required for any workflow using a Gemini tier (most defaults).
• OLLAMA_BASE_URL — default http://localhost:11434; override if your Ollama daemon listens elsewhere.
• AIW_STORAGE_DB / AIW_CHECKPOINT_DB — path overrides for the run registry and checkpoint databases (defaults: ~/.ai-workflows/storage.sqlite3 / ~/.ai-workflows/checkpoint.sqlite3).

Claude Code tier: some workflows route to the claude CLI via OAuth. Install and authenticate it separately per Anthropic's setup docs. aiw never reads ANTHROPIC_API_KEY and never imports the anthropic SDK — Claude access is OAuth-only through the CLI subprocess.

Extending ai-workflows

ai-workflows is a declarative orchestration layer; extension is a first-class capability. Authors engage at four progressively-deeper tiers, each with a dedicated guide:

Tier	When	Guide
1 — Compose	You're combining built-in step types (LLMStep, ValidateStep, GateStep, TransformStep, FanOutStep) into a workflow. The happy path.	docs/writing-a-workflow.md
2 — Parameterise	You're configuring built-in steps (retry policy, response format, gate behaviour, tier choice).	docs/writing-a-workflow.md (same doc)
3 — Author a custom step type	No built-in covers your need. Subclass Step; the framework wires your custom step into the graph like a built-in.	docs/writing-a-custom-step.md
4 — Escape to LangGraph directly	Your topology is genuinely non-standard (dynamic edge conditions, novel control flow). Use the legacy register(name, build_fn) API.	docs/writing-a-graph-primitive.md

The framework's promise: descending a tier never forces you to reverse-engineer framework source. If you're at the wrong tier, you'll find pointers to the right one in any guide.

MCP server

Register aiw-mcp with any MCP host — Claude Code, Cursor, Zed, or an HTTP client via the streamable-HTTP transport — to drive the same workflows inside-out:

claude mcp add ai-workflows --scope user -- uvx --from jmdl-ai-workflows aiw-mcp

The HTTP transport is opt-in for browser-origin consumers: aiw-mcp --transport http --port 8080 --cors-origin http://localhost:3000.

Registering your own workflow modules from a downstream package? AIW_EXTRA_WORKFLOW_MODULES=pkg.workflows.your_workflow (or --workflow-module pkg.workflows.your_workflow, repeatable) imports them at startup. See docs/writing-a-workflow.md §External workflows from a downstream consumer.

Security notes

• Loopback default — aiw-mcp --transport http binds to 127.0.0.1; unreachable from other machines. --host 0.0.0.0 exposes the server to every process on the host and to the LAN. aiw-mcp has no built-in auth; the bind address is the only access boundary. Only pass --host 0.0.0.0 on a machine you own every process on, and put a reverse proxy in front if you need TLS.
• CORS is opt-in, exact-match — --cors-origin <url> adds one origin; without any flags the server emits no Access-Control-Allow-Origin header (same-origin only). Not required for stdio or loopback HTTP.

Contributing / from source

Clone the repo for development or to modify the framework itself:

git clone https://github.com/yeevon/ai-workflows.git
cd ai-workflows
uv sync              # install runtime + dev dependencies
uv run aiw version   # prints the current __version__ (0.3.0 at M19 close)

For the full builder/auditor workflow — task specs, audit issue files, Builder / Auditor mode conventions — switch to the design_branch.

Development

Three gates guard every change:

uv run pytest         # unit + scaffolding tests (hermetic; skips e2e unless AIW_E2E=1)
uv run lint-imports   # four-layer import contract
uv run ruff check     # style + basic correctness

Next

Roadmap + per-milestone task files live at design_docs/roadmap.md (builder-only, on design branch).