onepwd 1.0.1

A Python wrapper around the 1Password CLI (op).

onepwd

A Python wrapper around the 1Password CLI (op). Use it from scripts to read and write items in your 1Password vaults without re-implementing subprocess plumbing every time.

Prerequisites

1. Install the 1Password CLI
2. Enable the desktop app integration (1Password app → Settings → Developer → "Integrate with 1Password CLI").
3. Sign in once interactively:

   op signin
   

Install

pip install onepwd

onepwd ships type information (py.typed), so mypy / pyright will pick up its annotations.

Quickstart

from onepwd import OnePasswordClient

with OnePasswordClient() as op:
    password = op.get_field("GitHub", "password")
    fields = op.get_multiple_fields("Database Config", ["username", "password", "hostname"])

By default, the client raises if you're not signed in. Pass auto_signin=True to have it run op signin for you.

Concealed fields (passwords, tokens, etc.) are read with --reveal automatically — get_field returns the actual value, not [concealed].

API

Method	Description
list_items(vault=None, categories=None)	List items, optionally filtered by vault and/or categories.
list_vaults()	List vaults the user can access.
get_item(item_name, vault=None)	Full item JSON.
get_field(item_name, field_name, vault=None)	Single field value as a string (concealed values are revealed).
get_multiple_fields(item_name, field_names, vault=None)	Dict of field name → value, in a single op call. Falls back to per-field reads if any name is unknown, so partial results still come through (missing fields → None).
create_item(category, title, fields=None, vault=None, tags=None)	Create a new item.
update_item(item_name, fields, vault=None)	Edit fields on an existing item.
delete_item(item_name, vault=None, archive=False)	Delete (or archive) an item.

OnePasswordError is raised for any CLI failure (missing binary, not signed in, non-zero exit, malformed JSON). Error messages mask key=value field assignments so secrets don't leak into logs.

create_item field handling

Field values are sent to op as a JSON template on stdin, so they never appear on the process command line (no ps exposure). For Login items, the labels username, password, and notes populate the category's built-in slots; everything else becomes a custom field. Custom field labels matching common credential keywords (password, secret, token, api_key, credential, passphrase, …) are marked CONCEALED; anything else is STRING.

CLI

The package installs an onepwd console script.

Command	Wraps
onepwd list [--vault V] [--categories A,B]	list_items
onepwd list-vaults	list_vaults
onepwd get <item> [--vault V]	get_item
onepwd get-field <item> <field> [--vault V]	get_field
onepwd get-fields <item> <f1,f2> [--vault V]	get_multiple_fields
onepwd create <category> <title> [--vault V] [field=value ...]	create_item
onepwd update <item> [--vault V] [field=value ...]	update_item
onepwd delete <item> [--vault V] [--archive]	delete_item

Global flags: --version, --no-signin (skip the auto-op signin fallback when not authenticated).

onepwd list-vaults
onepwd get-field GitHub password
onepwd create login MyApp username=alice password=hunter2 --vault Personal

get-field prints the raw value (good for shell substitution); other commands print indented JSON.

Examples

examples/smoke_test.py exercises every public method against a real 1Password vault — useful for verifying the CLI integration end-to-end:

python examples/smoke_test.py --vault "Private"

Limitations

• update_item passes field values as command-line assignment statements (op item edit has no stdin template path), so values may be visible to other processes via ps while op is running. Avoid for highly sensitive values on shared hosts.
• Synchronous only — no async API.
• Relies on a signed-in op session; no built-in support for service-account tokens (yet).

License

MIT — see LICENSE.