
Connect Epa Computational Toxicology to ChatGPT and Claude
Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Pull real-time chemical safety and property data into your agent.
Developed, maintained, and hosted by Vinkius.
MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED
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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.
Your AI does the work. We keep it safe and sound.
No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.
Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

Each Connector runs inside its own sealed environment.
Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.
One switch stops every agent. Instantly.
One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.
Spending limits that pause instead of surprise.
Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.
Three controls, built into the layer your AI connects through.
Curated set · 10 capabilities
We ship only the actions that matter.
01-04
4 capabilities in this set.
Part of 10 available through US EPA CompTox.
- 01
Get hazard summary
This capability pulls toxicity values and hazard assessment data from ToxValDB. Use it to get a quick overview of a chemical's danger profile.
- 02
Get chemical lists
This capability identifies which regulatory, research, or commercial lists a specific chemical belongs to. It helps you see how a substance is categorized by authorities.
- 03
Get chemical synonyms
This capability retrieves all known synonyms and alternative names for a chemical. Use it when you aren't sure which specific name to search for.
- 04
Get physicochemical properties
This capability provides both predicted and experimental physicochemical properties like melting point, logP, and solubility. It is your primary source for physical data.
05-07
3 capabilities in this set.
Part of 10 available through US EPA CompTox.
- 05
Search chemical by casrn
This capability searches the EPA database using a CAS Registry Number (CASRN). It is the most precise way to find a specific substance.
- 06
Search chemical by name
This capability finds chemicals using common, IUPAC, or synonym names. It works well for general queries when you don't have a CAS number handy.
- 07
Get bioactivity summary
This capability retrieves high-throughput screening results from ToxCast/Tox21 assays. Use it to see how a chemical interacts with biological targets.
08-10
3 capabilities in this set.
Part of 10 available through US EPA CompTox.
- 08
Get chemical details
This capability uses a DTXSID to pull comprehensive metadata and identification details. It provides the deep technical profile for a specific entry.
- 09
Get exposure summary
This capability pulls predicted exposure levels and product use data from ExpoCast and CPDat. Use it to understand how people or the environment might encounter a chemical.
- 10
Get fate and transport
This capability retrieves data on environmental fate and transport, such as half-life and bioconcentration. Use it to model how a chemical moves through the environment.
Real work
What teams actually run
Risk Assessment
Quickly pull toxicity values and NOAELs to support safety evaluations.
Regulatory Compliance
Check which regulatory lists a specific chemical appears on.
Environmental Impact Studies
Retrieve bioconcentration and half-life data to model chemical transport.
Chemical Identification
Resolve chemical names using synonyms or CAS numbers.
Automate a task
Put US EPA CompTox to work on one thing.
Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.
One connector, every AI
US EPA CompTox works with the most popular AI clients.
These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.
Claude
ChatGPT
Gemini
Perplexity
Grok
Microsoft Copilot
Cursor
VS Code
Windsurf
JetBrains
Cline
LangChain
Vercel AI SDK
Lovable
Z.ai
Raycast
Qwen Code
Kimi Code
Le ChatBuilding your own app? The connector is yours to use.
You don't need a client to put US EPA CompTox to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.
Observed, not estimated
901ms average. Fast in production.
US EPA CompTox is checked daily against the live service.
- Fastest day
- 750ms
- Slowest day
- 1164ms
- 14-day trend
- Slowing+33%
Connect your client
One URL. Every client.
Activate the Connector, copy your link, and paste it into the client you already use. 10 capabilities arrive ready to run.
Preview access · not provider authentication
The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of US EPA CompTox, so you can see the experience inside your AI.
It does not authenticate your account with US EPA CompTox. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
US EPA CompTox Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_0ZcTlmQ2vNletyA7rslqEJngY7ar0f5o60efjJSn/mcpClaude Desktop
Follow the steps below to connect in seconds.
- 1In Claude Desktop, open Settings → Connectors.
- 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
- 3Click Add and start a new chat — US EPA CompTox capabilities are ready to use.
{
"mcpServers": {
"epa-computational-toxicology-mcp": {
"url": "https://edge.vinkius.com/vk_preview_0ZcTlmQ2vNletyA7rslqEJngY7ar0f5o60efjJSn/mcp"
}
}
}
Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline
Step-by-step instructions for each client are in the guide. How to connect
Guided setup for Claude? Set up US EPA CompTox in Claude and other AIs
Who it's for
Built for the work US EPA CompTox owners hand off.
This MCP is built for professionals working with chemical safety and environmental regulation. It turns complex EPA databases into actionable data for your agent.
- 01
Toxicologists
They use the agent to gather hazard and bioactivity data for risk assessments.
- 02
Environmental Scientists
They use the agent to analyze how contaminants move through the environment.
- 03
Product Safety Teams
They use the agent to check chemical exposure and product use profiles.
FAQ
Questions US EPA CompTox owners ask.
- 01
How do I get an EPA API Key?
You can request a free API key by emailing ccte_api@epa.gov.
- 02
What clients can I use with this MCP?
You can use any MCP-compatible client, including Claude, Cursor, Windsurf, and VS Code.
- 03
Can I search for chemicals by name?
Yes, you can search using common names, IUPAC names, or synonyms.
- 04
Does this include toxicity data?
Yes, it provides hazard summaries and toxicity values from ToxValDB.
- 05
Is the data from the official EPA source?
Yes, this MCP connects directly to the US EPA's Center for Computational Toxicology and Exposure.
- 06
How do I obtain a free API key for the EPA CTX services?
You must send an email to ccte_api@epa.gov to request an individual API key. The key is usually issued free of charge for research and professional use.
- 07
What is a DTXSID and how is it used?
DTXSID is the EPA Dashboard Chemical Identifier. It is the primary unique identifier used across all CompTox APIs to ensure precise substance identification.
- 08
Are the results returned in real-time from the EPA databases?
Yes, this agent queries the live CompTox Chemicals Dashboard APIs directly, ensuring you have the most up-to-date scientific data available from the CCTE.
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Connect US EPA CompTox to Claude, Cursor, ChatGPT & more
