What is alpha-vantage-mcp CLAUDE.md?

A set of instructions for an MCP server that lets AI assistants retrieve financial information from Alpha Vantage, including stock, company, cryptocurrency, and options data.

Use it when working on features that fetch market prices, company details, historical trading data, cryptocurrency rates, or options-chain information.

It gives a coding agent the project structure, available data tools, and expected handling for API requests and rate limits. This reduces guesswork when changing or using the server.

How berlinbra/alpha-vantage-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to berlinbra/alpha-vantage-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/berlinbra/alpha-vantage-mcp/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/berlinbra/alpha-vantage-mcp

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/berlinbra/alpha-vantage-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/berlinbra/alpha-vantage-mcp/claude-md)

Your own site

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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/berlinbra/alpha-vantage-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/berlinbra/alpha-vantage-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,470 This file is loaded in full into every session.

When invoked 1,470 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.01470	$0.01470
Opus 5.5	$0.00588	$0.00588
Sonnet 5.5	$0.00294	$0.00294
Haiku 4.5	$0.00147	$0.00147

Measured 2mo ago against content hash f524354a5fb8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

alpha-vantage-mcp CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 170 lines

How it starts

The opening of the file, as written. The whole thing — 170 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Alpha Vantage MCP Server - Claude.md

Overview

The Alpha Vantage MCP Server is a Model Context Protocol (MCP) implementation that provides real-time access to financial market data through the Alpha Vantage API. This server enables Claude and other AI assistants to retrieve stock quotes, company information, and cryptocurrency data.

Architecture

Core Components

server.py - Main MCP server implementation that handles tool registration and execution
tools.py - Utility functions for API requests and data formatting
smithery.yaml - Smithery MCP configuration for automated deployment

Key Features

Stock Market Data
- Real-time stock quotes with price, volume, and change data
- Detailed company information (sector, industry, market cap)
- Historical daily time series data (OHLCV)
Cryptocurrency Support
- Real-time cryptocurrency exchange rates with bid/ask prices
- Daily, weekly, and monthly cryptocurrency time series data
Advanced Options Data
- Historical options chain data with Greeks calculations
- Advanced filtering and sorting capabilities by strike, volume, IV, etc.
Error Handling & Rate Limiting
- Built-in error handling for API failures
- Rate limit management and timeout handling
- Comprehensive error messages
- CRITICAL: Never use placeholder data in responses - always handle errors properly and transparently

Available Tools

The server implements 12 MCP tools:

get-stock-quote - Current stock quote information
get-company-info - Detailed company overview data
get-crypto-exchange-rate - Cryptocurrency exchange rates
get-time-series - Historical daily stock price data
get-realtime-options - Real-time options chain data (premium required)
get-historical-options - Options chain data with sorting
get-etf-profile - Comprehensive ETF profile with holdings and sector allocation
get-crypto-daily - Daily cryptocurrency time series
get-crypto-weekly - Weekly cryptocurrency time series
get-crypto-monthly - Monthly cryptocurrency time series
get-earnings-calendar - Upcoming earnings calendar data
get-historical-earnings - Historical earnings data

Read the full file on GitHub · 170 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 170 lines · 1,470 tokens per session scan A f524354a5fb8

Subscribe to this mod's changes

alpha-vantage-mcp CLAUDE.md is an instructions file published in the GitHub repository berlinbra/alpha-vantage-mcp (104 stars, last pushed 1y ago), licensed MIT. It adds 1,470 tokens to every session, about $0.0059 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Finance and fintech

alpha-vantage-mcp CLAUDE.md next to 6 instructions from other repositories
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alpha-vantage-mcp: Instructions file for Claude Code