cloudflare/mcp-server-cloudflare workers-bindings@0.5.0

workers-bindings@0.5.0

Repository: cloudflare/mcp-server-cloudflare

Tag: workers-bindings@0.5.0

Published: 2026-06-02T17:21:37Z

Prerelease: no

Release notes:

Minor Changes

• f625075: Centralize Cloudflare account resolution and remove the account-management tools.

The accounts_list and set_active_account tools are removed. Account scoping is now resolved automatically by an AccountManager (via the new server.accountTool() registration), in priority order:

1. Auth-pinned account — an account-scoped API token's account, or an OAuth token with a single account, is used automatically (no account_id parameter is exposed). 2. `cf-account-id` request header — for tokens that can access multiple accounts, set this header in your MCP client config to pick an account. 3. `account_id` tool argument — for multi-account tokens, account-scoped tools expose an optional account_id parameter; when omitted (and no header is set) the tool returns an error listing the accounts you can use. Multi-account credentials also list their accounts in the server's initialize instructions.

All tool error responses now set isError: true so clients can distinguish failures.

Patch Changes

• a358e69: Upgrade @cloudflare/workers-oauth-provider 0.4.0 → 0.7.0.

No tool or behavior changes. The only API change affecting this repo is that TokenExchangeCallbackOptions now carries a required grantId field, which only touched a test fixture (the provider supplies it at runtime).

• f625075: Upgrade core dependencies: agents 0.2.19 → 0.13.3, @modelcontextprotocol/sdk 1.20.2 →

1.29.0, zod 3 → 4, and ai 4 → 6.

No user-facing tool or behavior changes. Internal adjustments for the new versions:

• zod 4: z.record(...) now takes an explicit key schema; z.string().ip() replaced with

z.ipv4()/z.ipv6() validation; dropped the removed objectOutputType helper.

• agents 0.13: McpAgent env generic is constrained to Cloudflare.Env.
• MCP SDK 1.29: tool annotations hints must be flat ({ title, readOnlyHint, ... }) — fixes a

latent bug where nested hints were silently ignored.

• ai 6: eval tooling updated (LanguageModel, inputSchema, stopWhen/stepCountIs, tool-call input).