Financial Stock Market MCP Server
Provides tools for stock data retrieval, historical analysis, and market comparison using yfinance. It features robust guardrails to ensure secure interactions and blocks restricted content like investment advice.
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NatalieCheong
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.
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
4/4 tools missing one or more hints — get_stock_info (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_historical_data (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); compare_stocks (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +1 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.
Descriptions match behaviour
4 tools describe read intent but their handlers mutate — get_stock_info (line 55: with open(filename, 'w') as f:); get_historical_data (line 107: with open(filename, 'w') as f:); compare_stocks (line 173: with open(filename, 'w') as f:)
Rename the tool, rewrite the description, or move the side-effect into a separate clearly-named tool.
Tool inputs are validated
3/4 tool handlers declare input schemas (75%)
Declare an inputSchema with zod/joi/yup on every tool definition.
License file
No license file
Add a LICENSE file (MIT, Apache-2.0, etc.).
Tests exist
No test files found
Add tests that exercise each declared tool.
Tool description accuracy
4 tools have description/behavior mismatches: get_stock_info: description implies read-only but handler writes/deletes/executes; get_historical_data: description implies read-only but handler writes/deletes/executes; compare_stocks: 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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