MCP server that provides vision capabilities to coding agents, enabling them to analyze screenshots, UI mockups, terminal errors, documents, tables, and charts through OpenAI-compatible vision models. Supports local stdio and remote HTTP deployments with structured JSON output and binary upload side channels.
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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xyun1996
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.
When Vitest UI server is listening, arbitrary file can be read and executed
Vitest allows Remote Code Execution when accessing a malicious website while Vitest API server is listening
@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_HEADERauthorizationMCP_AUTH_SCHEMEMCP_AUTH_TOKENreplace_with_a_long_random_tokenMCP_HTTP_HOSTMCP_HTTP_PATHMCP_HTTP_PORTMCP_TRANSPORTOCULAR_API_KEYyour_api_keyOCULAR_BASE_URLe =https://your-openai-compatible-endpoint.example/v1 \OCULAR_BENCH_CACHEOCULAR_BENCH_LABELOCULAR_CACHE_DIRCache directoryOCULAR_CACHE_ENABLEDEnable result cacheOCULAR_COMPAT_LABELOCULAR_HEADERSOptional custom provider headers as JSONOCULAR_LOG_LEVELOCULAR_MODELyour_vision_modelOCULAR_PROVIDEROCULAR_UPLOADS_DIRPersistent upload directoryOCULAR_UPLOAD_URL_BASEPublic base URL used in upload instructionsTool 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
8/8 tools missing one or more hints — analyze_image (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); extract_text_from_image (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); analyze_ui_screenshot (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +5 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 0/8 tool handlers declare input schemas (0%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tests pass
npm test failed — tests do not pass
Make sure npm test runs cleanly. Common cause: missing build step or missing env vars.
Production dependencies are patched
0 critical, 3 high severity in production deps — @modelcontextprotocol/sdk@1.17.5 (high), @modelcontextprotocol/sdk@1.17.5 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dev dependencies
2 critical/high in dev-only deps (does not ship to users)
Upgrade dev dependencies when convenient.
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