Carbon Market News MCP server

Which servers in the official MCP registry are Carbon Market News's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-19

← Back to Carbon Market News

Whose server it is

Registry namefyi.carbon/carbon-fyiverified in the MCP registry

The registry name sits under carbon.fyi. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-19

Stateanswerschecked 2026-10-19
Tools6
Server calls itselfcarbon.fyi
Server version0.1.0
Protocol version2025-06-18

On 2026-10-19 the server answered initialize and tools/list without a sign-in. First answer in 110 ms.

Measured dailydaily checks: 2, the first on 2026-10-19

Answeredmeasuring2 of the 7 daily checks it takes to print a share
Median first answer213 ms
Space in an agent's context≈ 920 tokensthe definitions of all its tools (6), which an agent carries on every turn
Tool definitionsA · 100 of 100

Every tool passes all six checks.

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The state of vendors' MCP servers: method and numbers →

Tools it offers6 tools · read 2026-10-19

search_news
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…
get_story
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.
get_carbon_prices
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…
get_price_history
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…
get_market_summary
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.
list_sources
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.

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

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

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.