World Reference
FreeNot checkedWorld-reference data (taxonomy, OBO terms, nutrition, observations, Wikidata alignment) MCP server and agent-connector-sdk source adapters
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World-reference data (taxonomy, OBO terms, nutrition, observations, Wikidata alignment) MCP server and agent-connector-sdk source adapters
README
Version: 0.3.0
World-reference data — organism taxonomy, OBO reference terms, food/nutrition
composition, organism and weather observations, and Wikidata alignment — as an
MCP tool surface and, through agent-connector-sdk's declarative mcp_tool
source adapter, as bounded, checkpointed ingestion streams onto the
epistemic-graph world_model ontology (feat/world-model-ontology).
Sources
| Ledger row | Sources | Target class |
|---|---|---|
| EH-358 (taxonomy) | NCBI Taxonomy (E-utilities), GBIF backbone | Taxon |
| EH-359 (reference terms) | EBI OLS4 (GO, UBERON, ENVO, PATO, ChEBI, FoodOn) | BiologicalProcessTerm, AnatomyTerm, EnvironmentTerm, QualityTerm, ChemicalEntityTerm, FoodTerm |
| EH-360 (nutrition) | USDA FoodData Central | FoodCompositionRecord |
| EH-361 (observations) | GBIF occurrences, iNaturalist, Open-Meteo, NOAA GHCND | OrganismObservation, WeatherObservation |
| EH-362 (alignment) | Wikidata SPARQL | wikidataId / skos:exactMatch keys for Taxon, ChemicalEntityTerm, Country |
Tools
Nine MCP tools, one FastMCP server (world-reference-mcp console script):
taxonomy_ncbi_search, taxonomy_gbif_search, reference_term_list,
fdc_food_search, gbif_occurrence_search, inaturalist_observation_search,
open_meteo_weather_observation, noaa_ghcnd_daily, wikidata_alignment_search.
Every tool is keyless except fdc_food_search and noaa_ghcnd_daily, whose
credentials are resolved server-side through agent_connector_sdk.credentials
(WORLD_REFERENCE_FDC_API_KEY, WORLD_REFERENCE_NOAA_TOKEN) — never accepted
as a tool argument.
See AGENTS.md for architecture, the ontology-mapping authority, rate limits, and commands.
Install World Reference in Claude Desktop, Claude Code & Cursor
unyly install world-referenceInstalls into Claude Desktop, Claude Code, Cursor & VS Code — handles npx, uvx and build-from-source repos for you.
First time? Get the CLI: curl -fsSL https://unyly.org/install | sh
Or configure manually
Run in your terminal:
claude mcp add world-reference -- uvx --from git+https://github.com/Knuckles-Team/world-reference-mcp world-reference-mcpStep-by-step: how to install World Reference
FAQ
Is World Reference MCP free?
Yes, World Reference MCP is free — one-click install via Unyly at no cost.
Does World Reference need an API key?
No, World Reference runs without API keys or environment variables.
Is World Reference hosted or self-hosted?
Self-hosted: the server runs locally on your machine via the install command above.
How do I install World Reference in Claude Desktop, Claude Code or Cursor?
Open World Reference on unyly.org, pick your client tab (Claude Desktop, Claude Code, Cursor) and press Install — the config is generated automatically, no JSON editing.
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