1-password

1Password through One

1Password is a secure password manager that consolidates credentials, payment cards, documents, and two-factor authentication into a zero‑knowledge vault accessible across all major devices. It offers strong password generation, autofill, breach monitoring via Watchtower, secure sharing, Travel Mode, passkey support, and enterprise‑grade user and device controls.

One exposes 1Password through four MCP tools. The table below carries real action ids from One's knowledge base, so for a common operation you can skip search and go straight to reading the action's parameters.

How to run an action

1. Find the action in the table below, or call search_one_platform_actions with platform 1-password if it is not listed.
2. Call get_one_action_knowledge with the action id. Do this every time, including for actions in this table. The table gives you the id, not the parameters.
3. Call execute_one_action with parameters copied from that knowledge.

Never guess a parameter name, a body field, or an enum value. The knowledge has the real schema, and a guessed field is either a 400 or a silent write of the wrong thing.

Before you start

Call list_one_integrations once and confirm 1Password is connected. If it is missing, the user has not connected it: say so and point them at https://app.withone.ai rather than reaching for raw HTTP.

Each connection carries an access field. If it reports {"policy": "methods", "methods": ["GET"]} the agent is read-only here, so plan a read-only answer instead of attempting a write that will be refused.

Before a write

Creates, updates, deletes and sends land on a real 1Password account and cannot be recalled. State the action and the specific target in one line before the first write in a task, and let the user stop you. Reads need no confirmation.

Actions

VaultItems

Action	Method	Path	Action id
Get a Vault Item’s Details	GET	/v1/vaults/{{vaultUuid}}/items/{{itemUuid}}	conn_mod_def::GJzu-ODZwPg::m-XJ3KmtQ8SJy8njzEsK8Q
List a Vault’s Items	GET	/v1/vaults/{{vaultUuid}}/items	conn_mod_def::GJzu-HJStBI::mMq6BWN1RYabEYmA62dnYg
Create a Vault Item	POST	/v1/vaults/{{vaultUuid}}/items	conn_mod_def::GJzu94bfJlg::vlQcMFn-QaKazBC_0J6Wcg
Delete a Vault Item	DELETE	/v1/vaults/{{vaultUuid}}/items/{{itemUuid}}	conn_mod_def::GJzu9_2yeAw::m87bvhNfT1KdLEswNWoq7g
Patch a Vault Item (Update Subset of Item Attributes)	PATCH	/v1/vaults/{{vaultUuid}}/items/{{itemUuid}}	conn_mod_def::GJzu-WcV5Xs::fe_cZZx7TLWmex1XRqXL4w
Update a Vault Item	PUT	/v1/vaults/{{vaultUuid}}/items/{{itemUuid}}	conn_mod_def::GJzu-eA_G7w::x7_T6_oYSCqVRuHv57fHvQ