withoneai 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
- Find the action in the table below, or call
search_one_platform_actionswith platform1-passwordif it is not listed. - Call
get_one_action_knowledgewith the action id. Do this every time, including for actions in this table. The table gives you the id, not the parameters. - Call
execute_one_actionwith 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 |
Files
| Action | Method | Path | Action id |
|---|---|---|---|
| Download a File's Content (by Vault, Item, and File UUID) | GET | /v1/vaults/{{vaultUuid}}/items/{{itemUuid}}/files/{{fileUuid}}/content |
conn_mod_def::GJzu9b049Dc::uZN8a8HrS1WQ0o7KmR2-6g |
| Get a File’s Details (in a Vault Item) | GET | /v1/vaults/{{vaultUuid}}/items/{{itemUuid}}/files/{{fileUuid}} |
conn_mod_def::GJzu9jFYNR8::f2b-WFqbTte5kyogaVsEuQ |
Vaults
| Action | Method | Path | Action id |
|---|---|---|---|
| Get a Vault’s Details (Metadata) | GET | /v1/vaults/{{vaultUuid}} |
conn_mod_def::GJzu-1PrxdI::JRCmSoE9R92z8-Y82aMH-A |
| List Vaults | GET | /v1/vaults |
conn_mod_def::GJzu-uExpFE::rJe6c7KUTAuJvyTqb5FxLA |
ItemFiles
| Action | Method | Path | Action id |
|---|---|---|---|
| List an Item’s Files (in a Vault) | GET | /v1/vaults/{{vaultUuid}}/items/{{itemUuid}}/files |
conn_mod_def::GJzu9SqmCYw::KCoykgaER9eXsHLV_6oTnQ |
Activity
| Action | Method | Path | Action id |
|---|---|---|---|
| List API Activity (API Requests) | GET | /v1/activity |
conn_mod_def::GJzvBGLPv2U::bFZgEQedRMahsbITZQm08Q |
Health
| Action | Method | Path | Action id |
|---|---|---|---|
| Get Server Health (State of Server and Dependencies) | GET | /v1/health |
conn_mod_def::GJzu9pOun7c::CmqSyXYmQlufEhAn3ZgjGw |
Heartbeat
| Action | Method | Path | Action id |
|---|---|---|---|
| Ping the Server for Liveness (Heartbeat) | GET | /v1/heartbeat |
conn_mod_def::GJzu9vtAfrc::BgpSFoFBSZySuGoIdQGVbw |
Metrics
| Action | Method | Path | Action id |
|---|---|---|---|
| Get Prometheus Metrics | GET | /v1/metrics |
conn_mod_def::GJzu-k201XE::cJWd9bLqSSaz8AFY2qIDEw |
When a call fails
The error comes from 1Password, not from One. A 400 or 422 means your parameters do not match the schema, so re-read the knowledge and fix the field. A 401 or 403 means the connection needs re-authorizing, which no retry will fix. A 404 means the id is not on this account. A 429 means slow down. Never retry a write more than once: the first attempt may have landed.
Full catalog: https://www.withone.ai/knowledge/1-password
Integration knowledge by One (withone.ai), licensed under One-Knowledge-1.0. Attribution must be preserved in derivative works.