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eiu-mcp-server

eiu-mcp-server

Ein Model Context Protocol-Server, der Claude (oder einem beliebigen MCP-kompatiblen LLM-Client) strukturierten, token-effizienten Zugriff auf die EIU-Daten-API bietet — rund 200 Länder und 320 Wirtschaftsindikator-Serien, historische Daten und Prognosen.

Er stellt drei Tools bereit:

Tool

Zweck

eiu_browse

Verfügbare Geografien und Serien auflisten, optional nach Stichwort gefiltert

eiu_search

Stichwortsuche im Serienkatalog (z. B. "current account")

eiu_get_data

Daten nach Land und Seriencode abrufen, mit Häufigkeits- und Datumsfiltern

Referenzdaten werden einmal pro Sitzung geladen und im Speicher zwischengespeichert, sodass Durchsuchen und Suchen keine weiteren API-Aufrufe kosten.

Voraussetzungen

  • Zugang zum EIU API Developer Portal. Die Einrichtung erfolgt nicht im Self-Service. Schreiben Sie an economicssupport@economist.com und bitten Sie um Zugang zum Developer Portal. Ihr Konto wird manuell eingerichtet. Sie benötigen alle drei Angaben: Ihre Portal-E-Mail-Adresse, Ihr Portal-Passwort und den im Portal angezeigten API-Schlüssel.

  • Auf Ihrem Rechner muss uv installiert sein. Einzeiler:

    curl -LsSf https://astral.sh/uv/install.sh | sh

Sie müssen dieses Repository nicht klonen oder eine virtuelle Umgebung verwalten – uvx erledigt alles über die Git-URL.

Related MCP server: EODHD MCP Server

Installation

Claude Code

Die Installation per Einzeiler, ausgeführt aus einem Ordner, dessen .env Ihre drei EIU-Werte enthält. Die Shell liest sie ein, sodass die Anmeldedaten nie in Ihrer Konversation auftauchen:

set -a; source .env; set +a
claude mcp add --scope user eiu \
  -e EIU_API_KEY="$EIU_API_KEY" \
  -e EIU_EMAIL="$EIU_EMAIL" \
  -e EIU_PASSWORD="$EIU_PASSWORD" \
  -- uvx --from git+https://github.com/joshua-bailey/eiu-mcp-server.git eiu-mcp-server

Oder fügen Sie den Eintrag von Hand in .mcp.json hinzu:

{
  "mcpServers": {
    "eiu": {
      "command": "uvx",
      "args": [
        "--from",
        "git+https://github.com/joshua-bailey/eiu-mcp-server.git",
        "eiu-mcp-server"
      ],
      "env": {
        "EIU_API_KEY": "${EIU_API_KEY}",
        "EIU_EMAIL": "${EIU_EMAIL}",
        "EIU_PASSWORD": "${EIU_PASSWORD}"
      }
    }
  }
}

Starten Sie dann Claude Code neu. Die drei eiu_*-Tools sollten unter /mcp erscheinen.

Claude Desktop

Dasselbe JSON-Snippet, eingefügt unter mcpServers in:

  • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

  • Windows: %APPDATA%\Claude\claude_desktop_config.json

Claude Desktop löst keine ${VAR}-Referenzen auf; tragen Sie dort stattdessen die tatsächlichen Werte ein.

Eine Version festlegen

uvx installiert standardmäßig den neuesten Commit auf main. Um eine Version auf ein bestimmtes Release-Tag festzulegen, hängen Sie @<tag> an die Git-URL an, z. B.:

"git+https://github.com/joshua-bailey/eiu-mcp-server.git@v0.1.0"

Umgebungsvariablen

Variable

Erforderlich?

Zweck

EIU_API_KEY

Ja

Ihr EIU-API-Schlüssel aus dem Developer Portal.

EIU_EMAIL

Ja

Die E-Mail-Adresse, die Ihr Portal-Konto verwendet.

EIU_PASSWORD

Ja

Ihr Portal-Passwort.

Alle drei werden benötigt. Der Server meldet sich mit E-Mail-Adresse und Passwort an, um ein Bearer-Token zu erhalten, und sendet dieses Token zusammen mit dem API-Schlüssel bei jeder Anfrage. Das Token wird im Speicher zwischengespeichert und vor Ablauf aktualisiert.

Verwendung

Sobald der MCP registriert ist, können Sie Claude zum Beispiel Folgendes fragen:

  • „Suche in EIU nach Serien zum Leistungsbilanzsaldo"

  • „Welche EIU-Seriencodes decken Verbraucherpreise ab?"

  • „Rufe EIU-Daten zum jährlichen BIP-Wachstum (DGDP) für die USA, Großbritannien und China von 2015 bis 2030 ab"

  • „Zeig mir EIU-Prognosen zur vierteljährlichen Inflation für Brasilien, Mexiko und Chile"

Claude wählt das passende Tool aus und ruft es auf.

Codes

  • Geografien sind zweistellige ISO-Codes in Großbuchstaben: US, GB, CN, BR.

  • Serien sind EIU-eigene Kurzcodes in Großbuchstaben, z. B. DGDP, DCPI. Nutzen Sie eiu_search oder eiu_browse, um sie zu finden, statt zu raten.

  • Häufigkeit ist einer der Werte Yearly, Quarterly oder Monthly.

eiu_get_data begrenzt die Antwort auf 200 Datenpunkte, um token-effizient zu bleiben, und weist darauf hin, wenn es die Antwort kürzt. Verkleinern Sie den Datumsbereich oder die Länderliste, um den Rest zu sehen.

API-Referenz

Die zugrunde liegende API ist unter developer.eiu.com/help/overview dokumentiert. Der Server kommuniziert mit https://api.eiu.com/v1.

Lizenz

MIT – siehe LICENSE. Gilt nur für den Wrapper-Code in diesem Repository. Abhängigkeiten behalten ihre eigenen Lizenzen. EIU-Daten sind ein kostenpflichtiges Abonnement, dessen Nutzungsbedingungen unabhängig von diesem Wrapper gelten.

Available Tools

3 tools
eiu_browseA

Browse available EIU geographies and data series.

Call with no filter to see all available geographies/series. Use filter to narrow results by keyword.

Args: filter: Optional keyword (e.g. 'Brazil', 'GDP', 'inflation') show: 'geographies', 'series', or 'both' (default)

NameRequiredDescriptionDefault
showNoboth
filterNo

Output Schema

NameRequiredDescription
resultYes

TDQS

A4.6/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the behavioral burden. It explains what happens with no filter versus with a filter and describes the show options. It does not mention output format or pagination, but the presence of an output schema reduces the need for that detail.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is compact and well-organized: a summary line, short usage guidance, and a clean args list. Every sentence contributes value, with no repetition or filler.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple two-parameter browse tool, the description is complete. It covers all parameters, defaults, and core behavior, and the output schema exists to document return values. The lack of explicit sibling routing is the only minor omission, but the intended use is clear.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 0%, and the description fully compensates. It defines filter as an optional keyword with concrete examples, and show as selecting 'geographies', 'series', or 'both' with the default noted. This is meaningful semantic content beyond the bare schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description opens with a specific verb and resource: 'Browse available EIU geographies and data series.' This clearly distinguishes it from siblings like eiu_get_data and eiu_search, which presumably retrieve or search data rather than browse the catalog.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives clear operational context: 'Call with no filter to see all available geographies/series. Use filter to narrow results by keyword.' It explains how to use the tool and the effect of each parameter, though it does not explicitly state when to prefer eiu_search or eiu_get_data.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

eiu_get_dataA

Fetch EIU forecast/indicator data by country and series codes.

Use eiu_browse or eiu_search first to find valid codes.

Args: geography_codes: ISO 2-char codes (e.g. ['US', 'BR', 'CN']) series_codes: EIU series codes (e.g. ['DGDP', 'DCPI']) frequency: 'Yearly', 'Quarterly', or 'Monthly' min_date: Start date YYYY-MM-DD (default: 5 years ago) max_date: End date YYYY-MM-DD (default: 5 years ahead)

NameRequiredDescriptionDefault
max_dateNo
min_dateNo
frequencyNoQuarterly
series_codesYes
geography_codesYes

Output Schema

NameRequiredDescription
resultYes

TDQS

A4.8/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden. It clearly implies a read-only fetch operation, states the prerequisite of finding valid codes first, and documents default date ranges and accepted frequency values. It could add error/rate-limit behavior, but the default date behavior and non-destructive nature are usefully conveyed.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is compact and well-structured. The high-level purpose is front-loaded, the prerequisite is stated in a single sentence, and the Args block is clean and easy to scan. No sentence is wasted or redundant.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has an output schema, return-value documentation is not needed. The description covers all five parameters, provides valid examples, explains the required discovery workflow, and states defaults. Everything an agent needs to invoke the tool correctly is present.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description fully compensates. It explains every parameter: ISO 2-char geography codes with examples, EIU series codes with examples, allowed frequency values, and date format/defaults for min_date and max_date. This is far beyond the bare schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description uses a specific verb ('Fetch') and a specific resource ('EIU forecast/indicator data') with clear scope by country and series codes. This distinguishes it well from the sibling tools eiu_browse and eiu_search, which are for finding codes rather than retrieving data.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It explicitly explains the intended workflow: use eiu_browse or eiu_search first to find valid codes, then call this tool. This is clear guidance on when to use this tool versus the alternatives, leaving no ambiguity for the agent.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

  1. 3 tool updatesv0.1.0
    • First observedeiu_browse
    • First observedeiu_get_data
    • First observedeiu_search

TDQS

A4.1/5.0

Scored across 3 tools

Disambiguation3/5

eiu_browse and eiu_search both support keyword-based series discovery, so agents may be unsure which to call when looking up series codes. eiu_browse is broader because it also covers geographies, while eiu_search is narrowly focused on series, but the boundary is somewhat blurred. eiu_get_data is clearly distinct.

Naming Consistency4/5

All tools share the eiu_ prefix and use lower_snake_case, making the naming pattern predictable. However, eiu_browse and eiu_search are bare verbs while eiu_get_data is verb_noun, which is a minor inconsistency.

Tool Count4/5

Three tools is a reasonable, compact set for a browse/search/fetch data workflow. The count is appropriate, though eiu_browse and eiu_search overlap enough that the set could arguably be reduced to two tools.

Completeness4/5

The core workflow of discovering geographies and series, then fetching EIU data, is covered without dead ends. Minor gaps exist around metadata details or available date ranges, but agents can complete the primary task effectively.

Maintenance

ActivityMaintained
ResponsivenessNo issues

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