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Worldgdp MCP server

Which MCP servers are Worldgdp's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-27

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Whose server it is
  • Registry nameorg.worldgdp/nowcastsverified in the MCP registry

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

When we asked itchecked 2026-10-27
  • Stateanswerschecked 2026-10-27
  • Tools6
  • Server calls itselfworldgdp
  • Server version0.2.1
  • Protocol version2025-06-18

On 2026-10-27 the server answered initialize and tools/list without a sign-in. First answer in 109 ms.

Should an agent connect itNot proven either way yet
  • Whether its tools do the product's job has not been judged yet.

Once connected

  • For "check estimated current-quarter GDP growth for regions", the likely first call is get_aggregate.
  • Parameters are untyped or undescribed in 3 of 8 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 8, the first on 2026-10-27
  • INITE MCP score93 of 100answers 100 · definitions 77 · context 100 · connects 100
  • Answered100% of days8 of 8 daily checks
  • Median first answer64 ms
  • Space in an agent's context≈ 1,460 tokensthe definitions of all its tools (8), which an agent carries on every turn
  • Tool definitionsB · 77 of 100
  • Typed results0 of 8 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 3 of 8
  • Not saying whether it only reads or can destroy: 8 of 8

What an agent can do with it

  • can do · check estimated current-quarter GDP growth for regions
  • not sure · compare model nowcasts against upcoming official GDP releases
  • not sure · review weekly biggest nowcast moves by email

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

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 score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers6 tools · read 2026-10-27
  • list_economies

    List modelled economies and aggregates with the current-quarter GDP nowcast (% q/q SAAR) and share of world GDP.

  • get_nowcast

    Current GDP nowcast for one economy: headline (% SAAR), 70% range, days to official release, recent daily path, component contributions and the latest data releases that moved it.

  • get_aggregate

    World or regional GDP nowcast with coverage and each economy's contribution (pp).

  • get_release_calendar

    Upcoming data releases that feed the nowcasts, with expected dates.

  • get_track_record

    Live track record (every published nowcast vs the official first estimate, no backtest) plus accuracy grade (A+ to C: hit rates within ±1pp/±2pp, error vs a naive forecast, direction calls), model version history and backtest errors…

  • get_weekly_pulse

    Weekly Economic Pulse: weekly economic activity index (momentum gauge from high-frequency data such as electricity demand, freight, travel, card spending, jobless claims and job postings; standard deviations from average 13-week growth, 0…

How to connect

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

{
  "mcpServers": {
    "nowcasts": {
      "type": "http",
      "url": "https://mcp.worldgdp.org/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http worldgdp https://mcp.worldgdp.org/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://mcp.worldgdp.org/mcp as a custom connector in the settings.

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.