Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Strong 2 Solid coverage with minor gaps

Materials CommonsMaterials-science data repository for storing, sharing and publishing research datasets and workflows, oper...59.2 OpenFermionOpenFermion is an Apache 2.0 library for translating quantum chemistry and materials science problems (elec...57.3

Developing 1 Usable, with meaningful gaps to close

SandboxAQ MCP ServerA fully managed, per-tenant Model Context Protocol server that exposes SandboxAQ's proprietary scientific A...49.7

Thin 2 Limited public surface area

NIST Data Discovery APIThe National Institute of Standards and Technology provides a Data Discovery API giving access to NIST's pu...29.7 NOMAD Repository (FAIRmat) — HU DOI tenancyThe NOMAD Repository for computational materials-science data is registered under HU Berlin's DataCite memb...29.4

Companies reaching this through an API (4)

These companies publish an API, specification or operation carrying “Materials Science” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

Google Quantum AI Humboldt-Universität zu Berlin University of Michigan-Ann Arbor US Department of Commerce

Score breakdown

Frequency

53.3

log-scaled weighted occurrences

Breadth

2.3

spread across providers

Quality lift

13.0

mean composite of providers using it

Cohesion

0.0

strength of nearest seed neighbor

Where this tag comes from

Provider tag82

Api tag5

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Tools for tags

7 MCP tools reach this

find_tagsBrowse and filter every tag in the catalog.
get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

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This tag

curl "https://apis.io/api/v1/tags/materials-science"

All tags

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As a scored cohort

curl "https://apis.io/api/v1/cohorts/tag/materials-science"

The distribution (Pro)

curl "https://apis.io/api/v1/cohorts/tag/materials-science/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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Materials Science

Providers using this tag (82)

APIs with this tag (5)