jumpcloud-mcp (LesterAJohn/jumpcloud-mcp) is an MCP server listed on the M8ven Trust Index. M8ven has not graded it: we have no way to read this server ourselves. No publisher has claimed this listing.
MCP server for JumpCloud APIs with full OpenAPI-driven coverage, enabling endpoint discovery, operation invocation, and direct API requests while managing multi-tenant user tokens in Vault and guarding mutating tools.
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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LesterAJohn
Source: Glama
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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
js-yaml: YAML merge-key chains can force quadratic CPU consumption
JS-YAML: Quadratic-complexity DoS in merge key handling via repeated aliases
APP_NAMEMCP_ADMIN_AUTH_KEYMutating-tool guard usingMCP_HTTP_TLS_CERT_PATHMCP_HTTP_TLS_KEY_PATHMCP_HTTP_VAULT_TOKEN_INDEX_PATHMCP_SERVER_NAMEMCP_SERVER_VERSIONVAULT_ADDRVAULT_AGENT_AUTH_MODEVAULT_AGENT_ENABLEDVAULT_AGENT_LISTENER_ADDRVAULT_AGENT_LISTENER_ENABLEDVAULT_AGENT_TOKEN_FILE_PATHVAULT_KV_MOUNTVAULT_TOKENVAULT_WRITE_RETRY_ATTEMPTSVAULT_WRITE_RETRY_BASE_DELAY_MSVAULT_WRITE_RETRY_MAX_DELAY_MSTool 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
20/20 tools missing one or more hints — jumpcloud_connection_info (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); jumpcloud_scope_info (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); jumpcloud_openapi_discovery (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +17 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 test coverage
11/20 tools referenced in tests (55%)
Write tests that reference each tool by name so every tool has at least one test.
Shell command execution
1 child_process call — runs shell commands
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
Production dependencies are patched
0 critical, 4 high severity in production deps — @modelcontextprotocol/sdk@1.17.1 (high), @modelcontextprotocol/sdk@1.17.1 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
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