nakama-mcp
An MCP server that allows Claude and other hosts to interact with a Heroic Labs Nakama instance through both its Client API and Console API, enabling game server operations like authentication, accounts, storage, leaderboards, and admin tasks.
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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mlger
Source: Glama
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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.
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
MCP_AUTH_TOKEN_(unset)_ Static bearer token required in Authorization: Bearer ….MCP_HTTP_HOST127.0.0.1 Bind address. Loopback by default.MCP_HTTP_PATH/mcp MCP endpoint path.MCP_TRANSPORTBy default the server speaks stdio. Set =http to run it as aNAKAMA_CONSOLE_PASSWORDpassword Console admin password.NAKAMA_CONSOLE_USERNAMEadmin Console admin user.NAKAMA_HOST127.0.0.1 Host for both APIs.NAKAMA_SERVER_KEYdefaultkey Server key for client authenticate endpoints.All four hints declared on every tool
14/14 tools missing one or more hints — nakama_search_actions (missing: destructiveHint, idempotentHint); nakama_execute_action (missing: idempotentHint); nakama_authenticate (missing: destructiveHint, idempotentHint), +11 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
12/14 tool handlers declare input schemas (86%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tool handlers catch errors
13/14 tool handlers wrap calls in try/catch (93%)
Wrap each tool handler body in try/catch and return a structured error response.
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@1.12.0 (high), @modelcontextprotocol/sdk@1.12.0 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
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