How to Use the EPA Computational Toxicology MCP in Claude Code

Q: Can Claude Code use EPA Computational Toxicology to verify a CASRN?

Yes. Run searchchemicalbycasrn to confirm the identity of any substance. It returns the exact match from the EPA database.

Q: How does Claude Code use EPA Computational Toxicology for exposure data?

It calls getexposuresummary to pull product use data. This lets your scripts assess exposure risks without leaving the terminal.

Q: Does EPA Computational Toxicology allow Claude Code to find synonym lists?

It does. Claude Code executes getchemicalsynonyms to retrieve all known names. This is useful for normalizing your input data.

Q: How do I connect the MCP Server to Claude Code?

Run the claude mcp add command with the appropriate transport flags. Once added, your tools are ready for command-line execution.

Connect Claude Code to the EPA CompTox database to automate chemical data retrieval in your shell-based DevOps pipelines.

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Connect EPA Computational Toxicology MCP to Claude Code

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Setup EPA Computational Toxicology with Claude Code

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Terminal-based chemical lookup for Claude Code

Pipe your chemical list through `search_chemical_by_name` to get instant DTXSID results. It works perfectly in your existing shell scripts. Claude Code connects directly to the EPA API. It keeps your terminal workflow moving without needing a GUI.

Claude Code hazard assessment automation

Automate your safety checks by calling `get_hazard_summary` within a CI/CD job. It pulls the toxicity values you need for regulatory compliance. Use `get_bioactivity_summary` to verify screening results. It gives you the raw data in a format your scripts can parse instantly.

Environmental fate tracking for Claude Code

Integrate `get_fate_and_transport` into your backend processes. It extracts environmental persistence data directly from the CompTox database. Claude Code ensures your pipelines stay updated with the latest EPA figures. It removes the need for manual data entry in your infrastructure.

Setup guide

Set up EPA Computational Toxicology MCP in Claude Code

Prerequisites

Claude Code CLI installed (npm install -g @anthropic-ai/claude-code)
Active Vinkius subscription with a valid endpoint token

1

Run the add command

Open your terminal and run the command shown on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com. Use --scope user to make it available across all projects.
2

Verify the connection

Start a Claude Code session and type /mcp to list connected servers. You should see epa-computational-toxicology-mcp with a green status indicator.
3

Start using tools

Ask Claude Code something like "Check my latest EPA Computational Toxicology transactions." It will automatically discover and invoke the available EPA Computational Toxicology tools.

Terminal

claude mcp add --transport http epa-computational-toxicology-mcp https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

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Prerequisites

Claude Code CLI installed
Active Vinkius subscription with a valid endpoint token

1

Open the config file

Create or edit .mcp.json in your project root for project-level scope, or ~/.claude.json for user-level scope.
2

Add the EPA Computational Toxicology MCP

Paste the JSON snippet shown on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Code

Start a new Claude Code session. Type /mcp to confirm the server is connected. The tools will be automatically available in your conversation.

.mcp.json

{
  "mcpServers": {
    "epa-computational-toxicology-mcp": {
      "type": "url",
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by US EPA CompTox. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about EPA Computational Toxicology MCP in Claude Code

Yes. Run `search_chemical_by_casrn` to confirm the identity of any substance. It returns the exact match from the EPA database.

It calls `get_exposure_summary` to pull product use data. This lets your scripts assess exposure risks without leaving the terminal.

It does. Claude Code executes `get_chemical_synonyms` to retrieve all known names. This is useful for normalizing your input data.

Run the `claude mcp add` command with the appropriate transport flags. Once added, your tools are ready for command-line execution.

The server performs ephemeral queries against the EPA API. It doesn't log your CASRNs or chemical names, keeping your research data strictly local.

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