Universal hosted MCP installer

Connect the client you actually use.

One reviewed installer supports Codex, Claude Code, and Cursor Agent. Client selection is always explicit, read-only access is the default, and an unrelated configuration named barvinca is never overwritten.

Choose your operating system

Codex

Native OAuth scope selection and a real barvinca_connection_status check.

curl -fsSL https://barvinca.com/install/mcp.sh | sh -s -- --client codex

Claude Code

User-scoped HTTP configuration with pinned read-only OAuth scopes.

curl -fsSL https://barvinca.com/install/mcp.sh | sh -s -- --client claude

Cursor Agent

Atomic global JSON configuration and native list-tools verification.

curl -fsSL https://barvinca.com/install/mcp.sh | sh -s -- --client cursor

Choose your shell

macOS or Linux

curl -fsSL https://barvinca.com/install/mcp.sh | sh -s -- --client codex

Review the POSIX script

Windows PowerShell

& ([scriptblock]::Create((irm https://barvinca.com/install/mcp.ps1))) -Client codex

Review the PowerShell script

Stable flags

Flag	Effect
`--client codex\|claude\|cursor\|all`	Required. Selects exactly which native client configuration is touched.
`--check`	Verifies saved configuration, transport, and a safe read-only tool or tool catalog.
`--update`	Refreshes a matching Barvinca entry and authorization without accepting a collision.
`--uninstall`	Removes only a matching Barvinca entry. Revoke server-side access separately in Settings.
`--non-interactive`	Writes configuration without launching browser authorization and prints the native login command.
`--profile read\|domains\|admin`	Codex only (or Codex within `all`). The default `read` profile requests `barvinca.read`; elevated profiles require explicit consent.

Verification is deliberately non-mutating. Codex and Claude call only barvinca_connection_status. Cursor uses mcp list-tools barvinca because its CLI does not expose a direct tool-call command.

Automation exit codes

0 success · 2 invalid flags · 3 collision · 4 missing client or prerequisite · 5 authentication/transport/check failure · 6 unsafe configuration read or write.

Compatibility

Existing Codex-only links remain available at /install/codex, /install/codex.sh, and /install/codex.ps1.