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Peptlas: is this peptide legal?

Official registry Government and legal

Legal status of peptides and GLP-1 drugs in the US, UK, EU, Australia, Canada, Brazil and sport.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http peptlas-is-this-peptide-legal 'https://peptlas.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "peptlas-is-this-peptide-legal": {
            "type": "http",
            "url": "https://peptlas.com/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Peptlas MCP server: is this peptide legal?
  2. Connect
  3. Tools
  4. Try asking
  5. Compounds covered
  6. The data

Ask Claude, ChatGPT, Cursor or any MCP client whether a peptide is legal, and it answers from Peptlas, the peptide legal status atlas. You get the status in the United States (FDA), Australia (TGA), the UK (MHRA), the EU (EMA), Canada (Health Canada), Brazil (ANVISA) and sport (WADA), with the primary source and the date it was last verified.

Free, read-only, no account. Setup guide: peptlas.com/mcp-server.

Connect

The hosted server needs no install:

https://peptlas.com/mcp
  • Claude (claude.ai and the desktop app): Settings, then Connectors, then Add custom connector, with the address above.
  • Claude Code: claude mcp add --transport http peptlas https://peptlas.com/mcp
  • Cursor (.cursor/mcp.json) and other clients that read mcpServers:
    { "mcpServers": { "peptlas": { "url": "https://peptlas.com/mcp" } } }
  • VS Code (.vscode/mcp.json):
    { "servers": { "peptlas": { "type": "http", "url": "https://peptlas.com/mcp" } } }
  • Local (stdio), for clients that only run local servers: npx -y github:Peptlas/peptlas-mcp. It loads the current data from peptlas.com once at start-up.

Tools

ToolAnswers
check_legal_statusIs this peptide legal? One compound or blend (KLOW, GLOW, the Wolverine stack), everywhere Peptlas tracks or in one place you name, with the U.S. answer in full (compounding rules, the latest FDA advisory vote, the next dated event), primary sources and the date it was last verified.
status_in_placeWhat is legal in a country? Every tracked compound in one place: a country, region, EU member state, regulator or "sport".
list_compoundsThe compounds Peptlas tracks, with the names people search by: brands, codes and street names.
recent_changesDated regulatory events, newest first: FDA votes, list changes, comment deadlines, warning letters.

Compounds resolve by name, brand, code or street name ("BPC-157", "Ozempic", "TB500", "reta"), and blends by their sellers' names ("KLOW", "GLOW 70", "Wolverine stack"). A blend is never more legal than its least legal ingredient, so each place takes its strictest one. All tools are read-only.

Try asking

  • Is BPC-157 legal in Australia?
  • Is KLOW legal in the UK?
  • Can a U.S. pharmacy still compound semaglutide?
  • Which peptides does WADA ban?
  • What changed with retatrutide this month?

Compounds covered

Each name links to its page on peptlas.com, with every primary source:

AOD-9604 · BPC-157 · Cagrilintide · CJC-1295 · Dihexa · Emideltide (DSIP) · Epitalon · GHK-Cu · Ipamorelin · Kisspeptin-10 · KPV · LL-37 · Melanotan II · MOTS-c · NAD+ · PT-141 (bremelanotide, Vyleesi) · Retatrutide · Selank · Semaglutide (Ozempic, Wegovy) · Semax · Sermorelin · SS-31 (elamipretide, Forzinity) · TB-500 · Tesamorelin (Egrifta) · Thymosin Alpha-1 · Tirzepatide (Mounjaro, Zepbound)

Blends, worked out from their ingredients: KLOW · GLOW · Wolverine stack (all blends). Pending FDA decision: Is CagriSema approved?

The short answer for all of them is on Are peptides legal?. Every status side by side is in the country-by-country grid. Brazil has its own Portuguese pages.

The data

The answers come from the same data as every page on peptlas.com: atlas.json, rebuilt with each update.

  • How it's kept current: official sources are checked every six hours, and no status changes until a person has checked the primary source (how Peptlas tracks it). Every change is dated in the public changelog.
  • Data: CC BY 4.0. Credit Peptlas and link the compound page.
  • Code: MIT.
  • Not advice: the statuses describe the law, not safety, efficacy or dosing. Nothing here is legal or medical advice, and Peptlas recommends no products or sellers.
  • Privacy: no account, no cookies. Your questions are neither stored nor logged by Peptlas.

The hosted endpoint runs this code (src/) as a Cloudflare Pages Function. It is listed in the official MCP Registry as com.peptlas/legal-status.

Made by the Peptlas Research Team. peptlas.com is the neutral, source-linked atlas of peptide legal status.

Frequently asked questions

What is Peptlas: is this peptide legal??

Legal status of peptides and GLP-1 drugs in the US, UK, EU, Australia, Canada, Brazil and sport.

How do I install Peptlas: is this peptide legal??

It runs as a remote server. In Claude Code: claude mcp add --transport http peptlas-is-this-peptide-legal 'https://peptlas.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Peptlas: is this peptide legal? need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Peptlas: is this peptide legal? open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Peptlas: is this peptide legal??

It is published by Peptlas. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.