# getHistoricalMarketCap

Access historical market capitalization data for a company using the FMP Historical Market Capitalization API. This API helps track the changes in market value over time, enabling long-term assessments of a company

Agent View of the PolicyLayer registry record for `getHistoricalMarketCap`. HTML page: https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/gethistoricalmarketcap

## Facts

- Tool: `getHistoricalMarketCap`
- Server: Financial Modeling Prep MCP Server (`financial-modeling-prep-mcp-server`) — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server.md
- Install: `npx -y financial-modeling-prep-mcp-server`
- Homepage: https://github.com/imbenrabi/Financial-Modeling-Prep-MCP-Server
- Risk category: Read (Low risk)
- Registry record: grade D, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "getHistoricalMarketCap",
    "arguments": {}
  }
}
```

## Why getHistoricalMarketCap is rated Low

This tool retrieves historical financial data (market capitalization) without side effects. It enables read-only queries of public market data for analysis purposes. There is no risk of data modification, deletion, code execution, or financial transactions. Low severity because misuse would only affect the user's own analysis/understanding, not system integrity or financial obligations.

From the tool's own definition: "Tool description states 'Access historical market capitalization data' and 'track the changes in market value over time' — purely retrieval and query operations with no modification, deletion, or execution capabilities."

## Use case

AI agents call getHistoricalMarketCap to retrieve information from Financial Modeling Prep MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Financial Modeling Prep MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "getHistoricalMarketCap": {}
  }
}
```

## Other tools on Financial Modeling Prep MCP Server (258)

- `calculateCustomDCF` — Execute — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/calculatecustomdcf.md
- `calculateCustomLeveredDCF` — Execute — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/calculatecustomlevereddcf.md
- `myTool` — Other — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/mytool.md
- `describe_toolset` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/describe-toolset.md
- `getAcquisitionOwnership` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getacquisitionownership.md
- `getActivelyTradingList` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getactivelytradinglist.md
- `getADX` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getadx.md
- `getAftermarketQuote` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getaftermarketquote.md
- `getAftermarketTrade` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getaftermarkettrade.md
- `getAllExchangeMarketHours` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getallexchangemarkethours.md
- `getAllIndexQuotes` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getallindexquotes.md
- `getAllIndustryClassification` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getallindustryclassification.md
- `getAllShareFloat` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getallsharefloat.md
- `getAnalystEstimates` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getanalystestimates.md
- `getAvailableCountries` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getavailablecountries.md
- `getAvailableExchanges` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getavailableexchanges.md
- `getAvailableIndustries` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getavailableindustries.md
- `getAvailableSectors` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getavailablesectors.md
- `getAvailableTranscriptSymbols` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getavailabletranscriptsymbols.md
- `getBalanceSheetGrowthBulk` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getbalancesheetgrowthbulk.md
- `getBalanceSheetStatement` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getbalancesheetstatement.md
- `getBalanceSheetStatementAsReported` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getbalancesheetstatementasreported.md
- `getBalanceSheetStatementGrowth` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getbalancesheetstatementgrowth.md
- `getBalanceSheetStatementsBulk` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getbalancesheetstatementsbulk.md
- `getBalanceSheetStatementTTM` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getbalancesheetstatementttm.md
- `getBatchAftermarketQuote` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getbatchaftermarketquote.md
- `getBatchAftermarketTrade` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getbatchaftermarkettrade.md
- `getBatchMarketCap` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getbatchmarketcap.md
- `getBatchQuotes` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getbatchquotes.md
- `getBatchQuotesShort` — Read — https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server/getbatchquotesshort.md
- …and 228 more: https://policylayer.com/tools/io-github-imbenrabi-financial-modeling-prep-mcp-server.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-imbenrabi-financial-modeling-prep-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-imbenrabi-financial-modeling-prep-mcp-server