ohah/react-native-mcp
MCP server for React Native app automation and monitoring
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Source: npm
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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
fast-xml-parser affected by numeric entity expansion bypassing all entity expansion limits (incomplete fix for CVE-2026-26278)
ws: Memory exhaustion DoS from tiny fragments and data chunks
fast-xml-parser has stack overflow in XMLBuilder with preserveOrder
METRO_BASE_URLREACT_NATIVE_MCP_ENABLEDTo enable MCP in release builds, run Metro with =true or set it in your build config.REACT_NATIVE_MCP_GET_SCREEN_SIZE_TIMEOUT_MSREACT_NATIVE_MCP_HEALTH_PORTREACT_NATIVE_MCP_LIST_APPS_TIMEOUT_MSREACT_NATIVE_MCP_TAP_TIMEOUT_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
44/44 tools missing one or more hints — accessibility_audit (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); add_media (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); assert_state (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +41 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.
Destructive tools are labelled
1 tool perform destructive updates without destructiveHint — take_screenshot deletes at line 47 (unlink(path))
Add destructiveHint:true to any tool whose handler calls .delete(), .upsert(), .update(), unlink, rm, DELETE, DROP, REPLACE INTO, or any operation that overwrites existing data.
Descriptions match behaviour
1 tool describes read intent but its handler mutates — take_screenshot (line 47: unlink(path))
Rename the tool, rewrite the description, or move the side-effect into a separate clearly-named tool.
Tool inputs are validated
Only 0/44 tool handlers declare input schemas (0%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tool test coverage
13/44 tools referenced in tests (30%)
Write tests that reference each tool by name so every tool has at least one test.
No eval / new Function
2 eval() or new Function() calls — dynamic code execution
Replace eval / Function with explicit parsing or safer alternatives.
Shell command execution
6 child_process calls — 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@1.25.0 (high), @modelcontextprotocol/sdk@1.25.0 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Tool description accuracy
take_screenshot: description implies read-only but handler writes/deletes/executes
Update tool descriptions to accurately reflect all capabilities — especially write, delete, or execute operations.
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