io.github.mrfentmen/alphavantage-mcp
alphavantage-mcp
MCP server for Alpha Vantage: stock quotes, forex, crypto. Needs a free API key.
alive probed 2026-10-19
4tools
≈ 316tokens, estimate
≈ 0.2 %of Claude's 200k window
0.2×the median server
320 msto initialize
10 msto list tools
- Run it
- npx -y @mrfentmen/alphavantage-mcp@1.0.1 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- alphavantage-mcp 1.0.0
- Capabilities
- tools
- Instructions
- none
- Of a 1M window
- ≈ <0.1 % of a 1M context window, estimate
- Claude count
- The count_tokens endpoint refused the tool schemas: invalid x-api-key. The estimate stands in.
- Repository
- https://github.com/mrfentmen/premium-mcps
- Registry
- active, updated 2026-10-01 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
Estimates with the o200k_base tokenizer.
| Tool | o200k estimate | Share of this server |
|---|---|---|
| fx_rate | 89 | 28 % |
| stock_quote | 80 | 25 % |
| crypto_price | 79 | 25 % |
| symbol_search | 68 | 22 % |
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- The Anthropic count_tokens endpoint refused the tool schemas (invalid x-api-key). A client that validates schemas can refuse them too.