Notion CLI for agents — designed with AXI (Agent eXperience Interface).

Wraps the official Notion CLI (ntn) with token-efficient TOON output, contextual next-step suggestions, and structured error handling. ntn handles authentication and the API; notion-axi makes its output ergonomic for autonomous agents driving Notion via shell execution.

Quick Start

1. Install and log in to the Notion CLI (Node 20+ also required):

curl -fsSL https://ntn.dev | bash   # installs `ntn`
ntn login                           # opens a browser; token is stored in your OS keychain

ntn login acts as you — it can already see everything you can, with no page-sharing step.

2. Install the notion-axi skill in the Agent Skills format with npx skills:

npx skills add maximebrmd/notion-axi --skill notion-axi -g

That is the entire notion-axi setup — no global install needed. The skill teaches your agent to run notion-axi through npx -y notion-axi, which shells out to ntn under the hood.

-g installs the skill for all projects (~/.claude/skills/); drop it to install for the current project only (.claude/skills/).

Other Ways to Install

The skill is the recommended path, but it is not the only one.

Zero setup

notion-axi is an AXI, so any capable agent can run the CLI directly with nothing installed via npm. Once ntn is installed and logged in (see above), just tell your agent:

Execute `npx -y notion-axi` to get Notion tools.

Session hook

Want ambient Notion context — recently edited pages and databases — fed into every agent session instead of loading on demand? Install the CLI globally and opt into the hook:

npm install -g notion-axi
notion-axi setup hooks

This installs a SessionStart hook for Claude Code, Codex, and OpenCode that surfaces recent workspace state at the start of each session. Restart your agent session after running this so the new hook takes effect.

Authentication

notion-axi delegates authentication entirely to the official Notion CLI (ntn) — it never handles a token itself, so it only ever touches your workspace.

ntn login — recommended

curl -fsSL https://ntn.dev | bash
ntn login

ntn login opens a browser, authorizes a workspace, and stores the credential in your OS keychain. It acts as you, so it can already reach everything you can with no page-sharing step — and there is no token to copy, paste, or rotate. This is the same browser-OAuth model the Notion MCP uses, but with zero hosted infrastructure.

NOTION_API_TOKEN — for CI / headless

For non-interactive environments where a browser login isn't possible, ntn (and therefore notion-axi) honors a token from the NOTION_API_TOKEN environment variable, which takes precedence over the keychain:

export NOTION_API_TOKEN=ntn_…   # a personal access token or internal integration secret

One restriction carries over from the Notion API regardless of how you authenticate: listing workspace users requires elevated permissions, so notion-axi users is often RESTRICTED_RESOURCE.

Usage

notion-axi                                   # home — recently edited pages & databases
notion-axi search "Q3 planning" --type page  # search pages and databases
notion-axi page view <id>                    # page properties + markdown body
notion-axi page view <id> --full             # full body, no truncation
notion-axi db view <id>                      # database data sources & schema
notion-axi db query <id> --limit 50          # database rows as a table
notion-axi db query <id> --fields Stage,Owner # pick specific columns
notion-axi db query <id> --where Status=Todo --sort Due:asc  # filter + sort server-side
notion-axi db query <id> --filter '{"property":"Done","checkbox":{"equals":false}}'
notion-axi db query <id> --cursor <next_cursor>  # continue paging past has_more
notion-axi page create --parent <id> --title "Meeting notes" --content "# Agenda"
notion-axi page create --parent <id> --title "Spec" --content-file ./spec.md
notion-axi page create --parent <id> --title "Ship v2" --db   # new row in a database
notion-axi page update <id> --append "## Follow-ups"
notion-axi page update <id> --set Status=Done --set "Due=2026-07-01"  # set row properties
notion-axi page archive <id>                  # trash a page (--restore to undo)
notion-axi page move <id> --to <parent_id>    # reparent a page
notion-axi db create --parent <page_id> --title Tasks --prop Stage:select --prop Due:date
notion-axi db edit <id> --add Priority:select --remove OldField
notion-axi comments add <id> "Looks good — shipping"
notion-axi whoami                             # login identity (bot/user) and workspace
notion-axi file upload ./diagram.png --attach <page_id>   # upload + attach a file
notion-axi block list <page_id>               # a page's child blocks (ids + text)
notion-axi api post search --body '{"query":"roadmap"}'  # raw endpoint escape hatch
notion-axi setup hooks                        # install optional agent session hooks

Page bodies are markdown (via the Notion API), so --content, --append, and --replace all take markdown — or read it from a file with --content-file / --append-file / --replace-file. For db commands, <id> may be a database or a data-source id — a database resolves to its first data source automatically (use --source <id> to target a specific one). Use api for anything the dedicated commands don't cover (views, meeting notes, templates, paginated property items) — so the entire Notion REST API is reachable, not just the dedicated commands.

Commands

| Command | Description | | ---------- | ---------------------------------------------------------------------- | | search | Search pages & databases (--fields url to widen) | | page | Pages — view, create, update (body + --set), archive, move | | db | Databases — view, query, create, edit (schema) | | block | Blocks — list a page's child blocks, delete one | | users | List workspace users or get one by id (needs elevated permissions) | | comments | list / add / delete page comments | | whoami | Show the login identity (bot vs user) and workspace | | api | Call any Notion REST endpoint directly (escape hatch) | | setup | Install optional agent session hooks |

Global flags

• --help — show help for any command (notion-axi <command> --help)
• -v, -V, --version — show the installed notion-axi version

Output & exit codes

• All structured output is TOON on stdout; logs never pollute it.
• Exit 0 success (including idempotent no-ops), 1 runtime/API error, 2 usage error.
• Errors are structured: error, code, and a help list of fixes.

Benchmarks

How much does the AXI layer actually buy an agent? Measured against the CLI it wraps (ntn) and the Notion MCP server, driving an identical agent (claude -p, Claude Sonnet 4.6) headlessly across 5 read/multi-step Notion tasks × 3 repeats (45 runs). Input tokens include cache reads; every condition hit 100% task success.

| Condition | Avg input tokens | Avg cost | Turns | Duration | | -------------- | ---------------: | ---------: | ----: | -------: | | notion-axi | ~63,300 | $0.063 | 2.8 | 11s | | raw ntn CLI | ~83,700 | $0.079 | 3.6 | 16s | | Notion MCP | ~177,900 | $0.191 | 5.4 | 34s |

• ~19% cheaper than driving ntn directly — and ~33% cheaper at half the turns on simple reads, where the content-first home view, TOON output, and structured help save the round-trips an agent otherwise spends discovering the raw CLI's syntax.
• ~3× cheaper than the Notion MCP overall (and ~3.6× on complex multi-step tasks, where the MCP ballooned to ~293k tokens / $0.29 / 67s), at a third of the tokens and half the turns.

Caveats: a single model and prompt style, 3 repeats, and tasks that every condition could complete — harder or edge-case endpoints would likely widen the gap further. The grading harness is workspace-specific, so it isn't committed.

Development

pnpm install
pnpm run build        # compile TypeScript to dist/
pnpm run build:skill  # regenerate skills/notion-axi/SKILL.md from src/skill.ts
pnpm run dev          # run the CLI directly with tsx
pnpm run lint         # eslint
pnpm test             # vitest with coverage (100% thresholds enforced)

The committed skills/notion-axi/SKILL.md is generated by pnpm run build:skill; CI fails (build:skill -- --check) if it drifts. The npm package ships skills/notion-axi/, so published releases include the installable Agent Skill documented in Quick Start.

License

MIT © Maxime Bourmaud