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Changelog

All notable changes to this project are documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[1.2.3] - 2026-06-06

Changed

  • Enriched every tool description with purpose, when-to-use/disambiguation guidance, and return/error behavior. This raises self-describing quality for AI agents (and Glama's Tool Definition Quality score) while staying lean (~140 tokens per tool); parameters remain self-documented via their field descriptions.

Added

  • Dockerfile, .dockerignore, and glama.json to support a containerized Glama release (builds python:3.12-slim, runs the server over stdio as a non-root user). Verified locally: the image builds and tools/list returns all 13 tools.

[1.2.2] - 2026-06-04

Fixed

  • Oversized responses no longer overflow the response size cap. Previously a too-large JSON response could be returned larger than the limit (and dumped a giant truncated preview into context); it now returns a small message asking to narrow the request.

Changed

  • Trimmed verbose tool descriptions to cut the always-loaded schema size (~1,800 fewer tokens on connect). Tool behavior unchanged.

[1.2.1] - 2026-06-02

Packaging only. No runtime code changes.

Added

  • server.json and an mcpName field for listing on the official MCP Registry.

1.2.0 - 2026-06-01

Major feature release: seven new data tools (6 → 13) plus rate-limit hardening. Every tool was verified end to end by driving the real MCP server over stdio against live Yahoo Finance data.

Added

  • get_market_news — latest news headlines for a ticker, with source, date, summary, and link. Handles the modern nested yfinance news format.
  • get_options_chain — list available expiration dates, or fetch the calls/puts chain (strike, bid/ask, volume, open interest, implied volatility) for a given expiration.
  • get_holders — institutional holders, mutual-fund holders, the major-holders breakdown, or recent insider transactions.
  • get_dividends_splits — full dividend payment history (with a trailing summary) and stock-split history.
  • get_analyst_estimates — forward analyst price targets, EPS and revenue estimates by period, and growth estimates (complements the existing recommendations tool).
  • search_symbols — find ticker symbols by company name or keyword, with exchange, type, sector, and industry.
  • get_market_status — whether a market (by region) is open or closed, with timing and a summary of its major indices.
  • Shared curl_cffi browser-impersonating HTTP session reused across all tools. This cuts down on Yahoo's HTTP 429 rate-limiting and speeds up repeated calls; it degrades gracefully to the default session if curl_cffi is unavailable.
  • Friendly, specific handling of YFRateLimitError ("wait and retry") across all tools.

Changed

  • requirements.txt: add curl_cffi; raise the yfinance floor to >=0.2.61 (which carries upstream rate-limit-handling fixes and the Search/Market APIs used by the new tools).

1.1.1 - 2026-05-31

Documentation and packaging only. No runtime code changes; behavior is identical to 1.1.0.

Changed

  • Reworked the README: clearer structure, a tools table with parameters and supported period/interval values, example prompts, and a note clarifying that the repository name (yahoo-finance-mcp) differs from the npm package name (yahoo-finance-mcp-server).
  • Added shields.io badges, including a monthly-downloads pill and a Python version badge.
  • Normalized repository.url to the git+https:// form npm expects.

Added

  • This CHANGELOG.md, now shipped in the npm tarball.

1.1.0 - 2026-05-30

A full QA pass that fixed several bugs which broke core functionality, and made the documented npx installation actually work. Every fix was verified end to end by driving the real MCP server over stdio against live Yahoo Finance data.

Fixed

  • Tool inputs failed validation. Each tool took a single Pydantic model argument, so the MCP schema nested every field under a required params object while the docs told the model to send fields directly. The result was that calls were rejected. Tools now expose their parameters directly.
  • get_analyst_recommendations crashed with 'RangeIndex' object has no attribute 'strftime' due to a change in the yfinance recommendations format. It now reads the current format and also reports recent upgrades/downgrades.
  • Dividend yield was shown 100x too high (for example 35.00% for AAPL). Modern yfinance already returns this value as a percentage, so it is no longer multiplied again.
  • Markdown tables broke when the optional tabulate package was missing. It is now a declared dependency, with a graceful plain-text fallback.
  • Truncated JSON responses are now valid JSON instead of being cut off mid-structure.

Added

  • bin/cli.js Node launcher so npx -y yahoo-finance-mcp-server works. It locates Python 3.10+, creates an isolated virtual environment, installs the Python dependencies on first run, and starts the server with the protocol stream kept clean on stdout.
  • tabulate added to the dependencies.

Changed

  • package.json bin now points at the Node launcher, the binary name matches the package name, and a Node engine requirement was added.
  • Tightened dependency floors (yfinance>=0.2.40, mcp>=1.2.0).
  • Replaced the deprecated Pydantic min_items/max_items with min_length/max_length.
  • Rewrote the README and corrected the installation and troubleshooting docs.

1.0.0 - 2025-11-01

Added

  • Initial release of the Yahoo Finance MCP Server, distributed on npm.
  • Six tools: get_stock_quote, get_historical_prices, get_company_info, get_financial_statements, compare_stocks, and get_analyst_recommendations.
  • Markdown and JSON output formats.