# Carbon Fyi MCP server

Source: https://glimind.com/server/mcp-registry%2Ffyi.carbon%2Fcarbon-fyi
Registry id: `mcp-registry/fyi.carbon/carbon-fyi`
Status: live (checked 2026-10-27T06:24:33.601Z)

## Verdict

Carbon Fyi MCP server answered 100% of Glimind's liveness checks over 30 days, better than 42% of MCP servers, with 942 ms median handshake and 0 outages in 90 days. Its agent-readiness grade is A (96/100) across 6 tools, costing an agent about 1,022 tokens to load. Checked every few minutes; no tool is ever called.

## Measurements (30 days)

| Metric | Value | Better than |
|---|---|---|
| Uptime, 30 days | 100% | 42% of MCP servers |
| Median handshake latency | 942 ms | 20% of MCP servers |
| p95 handshake latency | 3179 ms | — |
| Checks in 30 days | 4,996 | — |
| Outages, 90 days | 0 | — |
| Median recovery | — | — |
| Agent-readiness score | 96/100 (A) | 82% of MCP servers |
| Tools | 6 | — |
| Tool-list size for an agent | ~1,022 tokens | 72% of MCP servers |
| Days observed | 29 | — |

## Install

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

Claude Code:

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

## Tools (6)

- `get_carbon_prices`: Current voluntary carbon credit prices from two independent sources: per-category minimum/median price and available supply across the Carbonmark marketplace ca
- `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 t
- `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 pri
- `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 indefinitel
- `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 b
- `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 o

Measured by Glimind (https://glimind.com): MCP handshake + tool list only, no tool is ever called. CC BY 4.0.