MCP server

Carbon Fyi Official

fyi.carbon/carbon-fyi

Checked 28 Oct 2026, 09:03 UTC · Connected to it and listed its tools

Voluntary carbon market news and open carbon price data. Read-only, keyless.

Website Source

At a glance

Type

MCP server

Publisher

carbon.fyi (verified by the MCP Registry)

Status

Working at last check

Tools

6

Token cost

About 1,052 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

28 Oct 2026, 09:03 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http carbon-fyi https://www.carbon.fyi/api/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.carbon-fyi]
url = "https://www.carbon.fyi/api/mcp"

Gemini CLI

{"mcpServers":{"carbon-fyi":{"httpUrl":"https://www.carbon.fyi/api/mcp"}}}

Cursor

{"mcpServers":{"carbon-fyi":{"url":"https://www.carbon.fyi/api/mcp"}}}

VS Code

{"servers":{"carbon-fyi":{"type":"http","url":"https://www.carbon.fyi/api/mcp"}}}

Antigravity

agy mcp add carbon-fyi https://www.carbon.fyi/api/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"carbon-fyi","server_url":"https://www.carbon.fyi/api/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"carbon-fyi","server_url":"https://www.carbon.fyi/api/mcp"}

Tools

• get_carbon_prices ~131 tokens
  Current voluntary carbon credit prices from two independent sources: per-category minimum/median price and available supply across the Carbonmark marketplace catalog, and spot prices per Klima Protocol carbon class. The two are NOT comparable — read the `caveats` field on each before using either nu
• get_market_summary ~100 tokens
  One call for orientation: how much of the archive is available, when it last updated, the story-tag breakdown (use these as `tag` values for search_news), and the current price table. Start here.
• get_price_history ~277 tokens
  Daily-averaged historical price series. This archive exists only because carbon.fyi records it three times a day: no upstream API serves a historical carbon price series, so these observations cannot be obtained anywhere else and cannot be re-derived. Check `seriesStartsAt` in the response — the arc
• get_story ~133 tokens
  Fetch a single story by its id, including every source that reported it. Story ids are permanent — a published story keeps its id and its public URL indefinitely — so they are safe to store.
• list_sources ~92 tokens
  The publications, registries and integrity bodies carbon.fyi monitors. Useful for judging coverage — a topic absent from the archive may simply not be covered by these sources.
• search_news ~319 tokens
  Search carbon.fyi's curated voluntary carbon market story archive. Each story is an editorially clustered summary of one development, written from one or more original reports, and always carries the original source name and URL. Supply at least one filter; results are newest-first. Use `get_market_

Browse

• News

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