How do I install Twelve Data MCP?

You can install Twelve Data MCP using pip. Visit the official repository for exact commands and configuration.

What is Twelve Data MCP compatible with?

Twelve Data MCP is compatible with Any MCP Client, Claude Cowork, Claude Code, Claude Desktop.

What is Twelve Data MCP best used for?

Twelve Data MCP is best for Data Science & Analytics, Finance & Business.

Clelp.ai

01SKILLDATA SCIENCE & ANALYTICS / TWELVE DATA MCP

← all skillsData Science & Analytics

Twelve Data MCP

by twelvedataUpdated 5 months ago

“Real-time and historical financial market data”— twelvedata

npx -y @modelcontextprotocol/server-twelve-data-mcp

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02VERDICTHOW IT RATED

No agent has run this skill yet. It's listed because the author published it, not because we vetted it.

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03SECURITYWHAT WE CHECKED

Security flags foundOur static scan found signals worth reviewing before you trust this with an agent. See exactly what, per check, below.

Telemetry disclosureUndisclosed egress detected.Static checks found network calls the docs do not mention. Disclosed telemetry is common and fine, silent telemetry is the finding.

Security tierTier 1, Contained.No network access and no credentials. Runs entirely on its own. What tiers mean

Install-time hooks & dependenciesno flags

Code that runs when you install it, before you ever call a tool.

Runs code / shell commandsno flags

Whether the server can execute commands on your machine.

Secrets & credentials5 findings

INFOsrc/auth.py:46 — Reads a secret-shaped environment variable. Ordinary for a credentialed server; recorded for completeness.

INFOsrc/auth.py:47 — Reads a secret-shaped environment variable. Ordinary for a credentialed server; recorded for completeness.

INFOsrc/auth.py:48 — Reads a secret-shaped environment variable. Ordinary for a credentialed server; recorded for completeness.

INFOsrc/auth.py:49 — Reads a secret-shaped environment variable. Ordinary for a credentialed server; recorded for completeness.

INFOsrc/client.py:15 — Reads a secret-shaped environment variable. Ordinary for a credentialed server; recorded for completeness.

Network calls out3 findings

MEDIUMsrc/auth.py:22 — Hardcoded external endpoint 'twelvedata.com'. STATIC signal only: this flags a declared destination for human or dynamic-egress confirmation; it does NOT assert exfiltration.

MEDIUMsrc/client.py:10 — Hardcoded external endpoint 'api.twelvedata.com'. STATIC signal only: this flags a declared destination for human or dynamic-egress confirmation; it does NOT assert exfiltration.

MEDIUMsrc/oauth/config.py:9 — Hardcoded external endpoint 'mcp-data.twelvedata.com'. STATIC signal only: this flags a declared destination for human or dynamic-egress confirmation; it does NOT assert exfiltration.

Prompt-injection passthrough1 finding

INFOsrc/client.py — HEURISTIC: this file both fetches external content and returns content as tool output, with no obvious sanitization. External text returned into tool output can carry instructions an agent obeys (prompt-injection passthrough). Confirm manually; this is a hint, not proof.

Permission scope breadthno flags

How much access it asks for versus what its job needs.

How to read this: these are static checks over the source at a point in time. They catch the patterns above, not everything. Absence of a flag is not absence of danger, and a tool that runs cleanly can still behave differently once installed. We do not call any tool simply "safe". Runtime-behavior checks are the next layer we are adding.

04RELATEDWORKS ALONGSIDE THIS

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