Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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waldzellai
Source: github_code
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Install from
The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.
slack_list_channelsList public or pre-defined channels in the workspace with pagination
slack_post_messagePost a new message to a Slack channel or reply to a thread
slack_add_reactionAdd a reaction emoji to a message
slack_get_channel_historyGet recent messages from a channel
slack_get_thread_repliesGet all replies in a message thread
slack_get_usersGet a list of all users in the workspace with their basic profile information
slack_get_user_profileGet detailed profile information for a specific user
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse
Anthropic's MCP TypeScript SDK has a ReDoS vulnerability
Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default
Tool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
7/7 tools missing one or more hints — slack_list_channels (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); slack_post_message (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); slack_add_reaction (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +4 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tool inputs are validated
Only 3/7 tool handlers declare input schemas (43%)
Declare an inputSchema with zod/joi/yup on every tool definition.
README present
No README found
Add a README.md describing the server and its tools.
License file
No license file
Add a LICENSE file (MIT, Apache-2.0, etc.).
Tests exist
No test files found
Add tests that exercise each declared tool.
Production dependencies are patched
0 critical, 3 high severity in production deps — @modelcontextprotocol/sdk@1.11.1 (high), @modelcontextprotocol/sdk@1.11.1 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dependency freshness
1/4 production deps stale: express-serve-static-core@2022-06-17 (4.2y)
Domain consistency
npm scope @smithery doesn't match GitHub owner waldzellai
Use the same org name across GitHub, npm, and your homepage so users can verify the publisher.
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