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Open Stocks MCP

Open Stocks MCP

by Open-Agent-Tools
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Remote

schwab_stream_level2

Retrieve a Level 2 market data snapshot for stocks from Schwab streaming cache by symbol and venue.

Instructions

Get a Level 2 snapshot from Schwab streaming cache for a symbol.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "symbol": "<symbol>"
    },
    "name": "schwab_stream_level2"
  }
}

Input Schema

NameRequiredDescriptionDefault
symbolYes
venueNonasdaq

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.6.5

TDQS

C2.4/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries full burden but lacks behavioral details such as data freshness, caching behavior, authentication needs, or rate limits. The phrase 'streaming cache' is ambiguous about real-time vs. delayed data.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single concise sentence, but it sacrifices essential information. It could include more detail without becoming verbose.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has an output schema and two parameters, the description is too brief. It fails to clarify return values, caching semantics, or the meaning of 'venue.'

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, and the description does not explain the 'venue' parameter's purpose or default behavior beyond the schema. Only 'symbol' is implied but not elaborated.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states 'Get a Level 2 snapshot from Schwab streaming cache for a symbol,' specifying the action (Get) and resource (Level 2 snapshot). However, it does not differentiate from the sibling tool 'stock_level2_data' which likely serves a similar purpose.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives like 'stock_level2_data' or 'schwab_stream_quotes'. There is no mention of prerequisites, context, or exclusions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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