Skip to main content
Glama
Sign In
Polygon-io MCP Server

Polygon-io MCP Server

Official
by massive-com
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Remote

get_snapshot_ticker

Retrieve a snapshot for a specific ticker by providing the market type and ticker details using the Polygon-io MCP Server.

Instructions

Get snapshot for a specific ticker.

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": {
      "market_type": "<market_type>",
      "ticker": "<ticker>"
    },
    "name": "get_snapshot_ticker"
  }
}

Input Schema

NameRequiredDescriptionDefault
market_typeYes
paramsNo
tickerYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.6/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It states 'Get snapshot' but doesn't clarify if this is a read-only operation, requires authentication, has rate limits, or what the output format might be. For a tool with no annotations, this is a significant gap in transparency.

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

Conciseness5/5

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

The description is extremely concise with just one sentence: 'Get snapshot for a specific ticker.' It is front-loaded and wastes no words, making it easy to parse quickly. However, this conciseness comes at the cost of completeness.

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 complexity (3 parameters, no annotations, no output schema, and many sibling tools), the description is incomplete. It doesn't explain what a snapshot entails, how it differs from other tools, parameter meanings, or behavioral aspects. This leaves the agent with insufficient information to use the tool effectively.

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

Parameters2/5

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

Schema description coverage is 0%, so the schema provides no parameter descriptions. The tool description mentions 'a specific ticker' but doesn't explain the three parameters (market_type, params, ticker) or their semantics. It fails to compensate for the lack of schema documentation, leaving parameters largely undefined.

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

Purpose3/5

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

The description states the tool's purpose as 'Get snapshot for a specific ticker', which is clear but vague. It specifies the verb 'Get' and resource 'snapshot', but doesn't explain what a 'snapshot' contains or how it differs from sibling tools like get_ticker_details or get_snapshot_all. The purpose is understandable but lacks specificity.

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. With many sibling tools (e.g., get_ticker_details, get_snapshot_all, get_snapshot_option), the description doesn't indicate scenarios where this tool is preferred, such as for real-time data versus historical aggregates. This leaves the agent without context for tool selection.

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

Deploy Server

Other Tools

Related Tools