Alpaca MCP Server
Servidor MCP de Alpaca
Exponer Alpaca Market Data & Broker API como herramientas MCP.
Instalación
npm install alpaca-mcpRelated MCP server: alpaca-mcp-server
Desarrollo local
git clone <repo-url>
cd alpaca-mcp
npm installVariables de entorno
Cree un .env en la raíz del proyecto con:
ALPACA_ENDPOINT=https://data.alpaca.markets
ALPACA_BROKER_ENDPOINT=https://broker-api.alpaca.markets
ALPACA_API_KEY=YOUR_ALPACA_API_KEY
ALPACA_SECRET_KEY=YOUR_ALPACA_SECRET_KEYComandos
inicio (dev):
npm start(ejecutanpx tsx index.ts)compilación :
npm run build(compila endist/)ejecutar compilado :
node dist/index.js
Uso
Una vez en ejecución, el servidor MCP escucha en la entrada/salida estándar. Utilice cualquier cliente MCP o la CLI:
npm link # optional
alpaca-mcp # starts server globallyHerramientas disponibles
obtener-activos
{ assetClass?: "us_equity" | "crypto" }get-stock-bars
{ symbols: string[]; start: string; end: string; timeframe: string }obtener-días-de-mercado
{ start: string; end: string }obtener-noticias
{ start: string; end: string; symbols: string[] }
Cada uno devuelve JSON en content[0].text o un error.
Configuración del cliente MCP
Para integrar a través de mcp.config.json , agregue lo siguiente bajo la clave mcpServers :
{
"mcpServers": {
"alpaca-mcp": {
"command": "npx",
"args": [
"-y",
"alpaca-mcp"
],
"env": {
"ALPACA_ENDPOINT": "https://data.alpaca.markets",
"ALPACA_BROKER_ENDPOINT": "https://broker-api.alpaca.markets",
"ALPACA_API_KEY": "<YOUR_API_KEY>",
"ALPACA_SECRET_KEY": "<YOUR_SECRET_KEY>"
}
}
}
}
## Publishing
```bash
npm publishLicencia
ISC
Available Tools
4 toolsget-assetsD
| Name | Required | Description | Default |
|---|---|---|---|
| assetClass | No | us_equity |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Tool has no description.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Tool has no description.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Tool has no description.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Tool has no description.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Tool has no description.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Tool has no description.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get-market-daysD
| Name | Required | Description | Default |
|---|---|---|---|
| end | Yes | ||
| start | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Tool has no description.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Tool has no description.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Tool has no description.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Tool has no description.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Tool has no description.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Tool has no description.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get-newsD
| Name | Required | Description | Default |
|---|---|---|---|
| end | Yes | ||
| start | Yes | ||
| symbols | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Tool has no description.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Tool has no description.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Tool has no description.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Tool has no description.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Tool has no description.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Tool has no description.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get-stock-barsD
| Name | Required | Description | Default |
|---|---|---|---|
| end | Yes | ||
| start | Yes | ||
| symbols | Yes | ||
| timeframe | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Tool has no description.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Tool has no description.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Tool has no description.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Tool has no description.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Tool has no description.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Tool has no description.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
4 tool updates
v1.0.0- First observed
get-assets - First observed
get-market-days - First observed
get-news - First observed
get-stock-bars
TDQS
Scored across 4 tools
Each tool has a clearly distinct purpose: get-assets retrieves assets, get-market-days provides market schedule information, get-news fetches news data, and get-stock-bars obtains stock price bars. There is no overlap in functionality, making it easy for an agent to select the correct tool.
All tool names follow a consistent verb_noun pattern with hyphens (get-assets, get-market-days, get-news, get-stock-bars). This uniformity makes the tool set predictable and easy to understand.
With only 4 tools, the set feels thin for a financial data server, potentially lacking operations like trading, account management, or more granular data queries. However, it covers basic data retrieval functions adequately.
The tool surface is severely incomplete for a financial domain, offering only read operations (get-*) with no create, update, delete, or trading capabilities. This limits agents to passive data access without supporting full investment workflows.
Maintenance
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