Server definition

Hash: sha256:fc306b9c824ab6bc0bee6a6768bb10e97a60f08f3d027afb99fa56d6952f1e1e
What it is: What a remote MCP server returned when asked what it offers: 6 tools

The blob, as servednamed by its sha256

{
  "instructions": "carbon.fyi provides curated voluntary carbon market (VCM) news and open market data. Call `get_market_summary` first for orientation. All tools are read-only. Story summaries are editorial rewrites of third-party reporting: always cite and link `source.url`, not carbon.fyi. Prices are point-in-time observations, never valuations or advice — the Klima carbon-class price in particular is a protocol spot price inversely related to liquidity, not a market benchmark.",
  "tools": [
    {
      "description": "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 number.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {},
        "type": "object"
      },
      "name": "get_carbon_prices",
      "outputSchema": null
    },
    {
      "description": "One call for orientation: how much of the archive is available, when it last updated, the story-tag breakdown (use these as `tag` values for search_news), and the current price table. Start here.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {},
        "type": "object"
      },
      "name": "get_market_summary",
      "outputSchema": null
    },
    {
      "description": "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 archive began on 2026-08-27, so early windows are necessarily short.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "days": {
            "description": "look-back window in days (default 90)",
            "maximum": 730,
            "minimum": 1,
            "type": "integer"
          },
          "key": {
            "description": "restrict to one category or class name (exact match, as returned by get_carbon_prices); omit for all",
            "maxLength": 120,
            "type": "string"
          },
          "kind": {
            "description": "which price source: marketplace category medians, or Klima carbon-class spot prices",
            "enum": [
              "carbonmark-category",
              "klima-class"
            ],
            "type": "string"
          }
        },
        "required": [
          "kind"
        ],
        "type": "object"
      },
      "name": "get_price_history",
      "outputSchema": null
    },
    {
      "description": "Fetch a single story by its id, including every source that reported it. Story ids are permanent — a published story keeps its id and its public URL indefinitely — so they are safe to store.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "id": {
            "description": "the story's `id`, as returned by search_news",
            "maxLength": 200,
            "minLength": 1,
            "type": "string"
          }
        },
        "required": [
          "id"
        ],
        "type": "object"
      },
      "name": "get_story",
      "outputSchema": null
    },
    {
      "description": "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.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {},
        "type": "object"
      },
      "name": "list_sources",
      "outputSchema": null
    },
    {
      "description": "Search carbon.fyi's curated voluntary carbon market story archive. Each story is an editorially clustered summary of one development, written from one or more original reports, and always carries the original source name and URL. Supply at least one filter; results are newest-first. Use `get_market_summary` first if you do not know what tags or date range to ask for.",
      "inputSchema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "limit": {
            "description": "max stories to return (default 20, ceiling 50)",
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "description": "case-insensitive text match against headline and summary, e.g. 'Verra' or 'biochar'",
            "maxLength": 120,
            "minLength": 2,
            "type": "string"
          },
          "since": {
            "description": "only stories first published on or after this UTC day",
            "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
            "type": "string"
          },
          "tag": {
            "description": "restrict to one story category",
            "enum": [
              "registry-action",
              "methodology",
              "corporate-deal",
              "integrity",
              "article-6",
              "market-data",
              "policy-regulatory",
              "other-vcm"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_news",
      "outputSchema": null
    }
  ]
}

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