1password vs Warden MCP
A side-by-side look at the 1password and Warden MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose 1password for security work as a local process; choose Warden MCP for security as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose 1password when
- You need dedicated capabilities in the Security domain.
- You prefer a local stdio subprocess transport.
- You have the keys it needs:
OP_SERVICE_ACCOUNT_TOKEN, OP_KEYCHAIN_SERVICE, OP_KEYCHAIN_ACCOUNT. - You want tools like
vault_list, item_lookup, item_delete.
Choose Warden MCP when
- You need dedicated capabilities in the Security domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You have the keys it needs:
BW_HOST, BW_CLIENTID, BW_CLIENTSECRET, BW_USER, BW_PASSWORD, BW_BIN, KEYCHAIN_BW_HOME_ROOT, KEYCHAIN_ALLOW_ENV_FALLBACK. - You want tools like
keychain_status, keychain_sync, keychain_search_items.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Security | Security |
| Quality signal | 56/100 · Good | 59/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | API key required |
| Pricing | Not declared | Free |
| Required env vars | OP_SERVICE_ACCOUNT_TOKENOP_KEYCHAIN_SERVICEOP_KEYCHAIN_ACCOUNT | BW_HOSTBW_CLIENTIDBW_CLIENTSECRETBW_USERBW_PASSWORDBW_BINKEYCHAIN_BW_HOME_ROOTKEYCHAIN_ALLOW_ENV_FALLBACK |
| Verified owner | Community listing | Community listing |
| GitHub stars | 21 | 20 |
| Directory activity | 2 views 0 installs 0 upvotes | 2 views 0 installs 0 upvotes |
| Tools | 15 | 4 |
| Full listing | View 1password | View Warden MCP |
Tools & capabilities
1password tools 15
vault_listList the 1Password vaults accessible to the service account (limited to the allow-listed vaults when OP_MCP_ALLOWED_VAULTS / --allowed-vaults is configured). Returns vault IDs, names, descriptions, and types.item_lookupSearch for items within a 1Password vault by title substring. Returns item IDs, titles, categories, and vault IDs.item_deletePermanently delete an item from a 1Password vault. This action cannot be undone.item_getRetrieve a full 1Password item — title, category, tags, notes, and all fields (id, title, type, section). Secret-bearing field values (passwords and other concealed fields, SSH private keys, one-time-password seeds, card numbers) are hidden unless reveal is true; only known non-secret types (text, URL, email, phone, date, menu, card type, address, reference) are shown by default. Accepts a secret reference (op://vault/item/field) or vault ID + item ID. Revealing a secret puts it in the model context/transcript — to USE a secret in a command or API call, prefer op_run with op:// references instead.item_editEdit an existing 1Password item. Update the title, notes (pass an empty string to clear notes), tags, website URL, upsert fields, or remove fields. Only referenced fields are changed; all others are preserved.item_listList all items in a 1Password vault, returning id, title, category, tags, and updatedAt for each. Never returns secret values.item_archiveArchive an item in a 1Password vault. The item is moved to the archive and hidden from regular views, rather than being permanently deleted.note_createCreate a Secure Note item in a 1Password vault, with optional tags and custom fields.password_createCreate a new password/login item in a 1Password vault with optional username, URL, tags, and notes.password_readRetrieve a secret from 1Password using either a secret reference (op://vault/item/field) or vault ID + item ID. Supports field selection and optional value reveal (defaults to metadata-only). Revealing a secret puts it in the model context/transcript — to USE a secret in a command or API call, prefer op_run with op:// references instead.password_updateUpdate (rotate) a password or concealed field on an existing 1Password item. If the target field does not exist, it will be created.password_generateGenerate a cryptographically secure random password with configurable length and character types. Uses rejection sampling for unbiased randomness.- +3 more on the listing page
Warden MCP tools 4
keychain_statusinspect raw `bw` statuskeychain_syncpull latest vault data with `bw sync`keychain_search_itemsfind items by name, URI, username, folder,keychain_get_itemread a full item by id, redacted by default
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
1password
{
"mcpServers": {
"1password": {
"command": "npx",
"args": [
"-y",
"@takescake/1password-mcp"
],
"env": {
"OP_SERVICE_ACCOUNT_TOKEN": "YOUR_OP_SERVICE_ACCOUNT_TOKEN_HERE",
"OP_KEYCHAIN_SERVICE": "YOUR_OP_KEYCHAIN_SERVICE_HERE",
"OP_KEYCHAIN_ACCOUNT": "YOUR_OP_KEYCHAIN_ACCOUNT_HERE"
}
}
}
}
Warden MCP
{
"mcpServers": {
"icoretech-warden-mcp": {
"command": "npx",
"args": [
"-y",
"@icoretech/warden-mcp@latest"
],
"env": {
"BW_HOST": "YOUR_BW_HOST_HERE",
"BW_CLIENTID": "YOUR_BW_CLIENTID_HERE",
"BW_CLIENTSECRET": "YOUR_BW_CLIENTSECRET_HERE",
"BW_USER": "YOUR_BW_USER_HERE",
"BW_PASSWORD": "YOUR_BW_PASSWORD_HERE",
"BW_BIN": "YOUR_BW_BIN_HERE",
"KEYCHAIN_BW_HOME_ROOT": "YOUR_KEYCHAIN_BW_HOME_ROOT_HERE",
"KEYCHAIN_ALLOW_ENV_FALLBACK": "YOUR_KEYCHAIN_ALLOW_ENV_FALLBACK_HERE"
}
}
}
}
Frequently asked questions
1password is categorized under Security and uses a local stdio subprocess. Warden MCP belongs to Security and uses a local stdio subprocess. Pick 1password for security work and Warden MCP for security.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
1password has no declared pricing — check the project's own site. Warden MCP is listed as free. Auth: api key required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add 1password and icoretech-warden-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, 1password has a quality signal of 56/100 (Good) with 2 views, 0 installs and 21 GitHub stars. Warden MCP has 59/100 (Good) with 2 views, 0 installs and 20 GitHub stars.