source-map-parser-mcp (MasonChow/source-map-parser-mcp) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 3 tools. No publisher has claimed this listing.
Enables mapping JavaScript error stack traces back to original source code, extracting context information to help developers locate and fix issues.
Emerging. No concerning findings. Grades remain capped until the project builds reputation through adoption. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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MasonChow
Source: modelscope
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Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
When Vitest UI server is listening, arbitrary file can be read and executed
@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
Rollup 4 has Arbitrary File Write via Path Traversal
SOURCE_MAP_PARSER_CONTEXT_OFFSET_LINENumber(process.env.) 1,SOURCE_MAP_PARSER_RESOURCE_CACHE_MAX_SIZESets the maximum memory space occupied by resource cache, default is 200MB. Adjusting this value appropriately can balance performance and memory usage.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
3/3 tools missing one or more hints — parse_stack (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); lookup_context (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); unpack_sources (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint). 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 0/3 tool handlers declare input schemas (0%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tool test coverage
Only 0/3 tools referenced in tests (0%)
Write tests that reference each tool by name so every tool has at least one test.
Dev dependencies
7 critical/high in dev-only deps (does not ship to users)
Upgrade dev dependencies when convenient.
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