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API · /worms-api

WoRMS Marine Species API

healthy 4,445 Subscribers

The World Register of Marine Species (WoRMS) as an API — the authoritative, expert-curated taxonomic register of the world's marine life, maintained by a global network of taxonomists. WoRMS provides the accepted scientific names, naming authorities, taxonomic status and synonymy, full classification and vernacular (common) names for marine species. /v1/search?name=Orcinus orca searches species by scientific name (set fuzzy=true for partial matching, marine_only=true to restrict to marine taxa), returning each match's AphiaID (WoRMS' stable identifier), accepted name, authority, rank, taxonomic status, valid name and higher classification. /v1/species?id=137102 returns a species' full record by AphiaID — name and authority, status, the kingdom-to-genus classification, marine and brackish flags, and citation. /v1/classification?id=137102 returns the complete taxonomic tree from Biota down to the taxon, rank by rank. /v1/vernaculars?id=137102 returns the common names with their language. Get an AphiaID from /v1/search, then look up its details, tree or common names. Ideal for marine biology, fisheries science, ecology, aquaculture and biodiversity-data harmonisation. Data from WoRMS (CC BY). This is authoritative marine taxonomy and nomenclature — distinct from species-occurrence/biodiversity databases (such as GBIF) and from sequence or genome databases.

#worms #marine-species #taxonomy #marine-biology #biodiversity #nomenclature #oceanography
api.oanor.com/worms-api
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Machine-readable spec so AI agents can integrate this API.

/api/worms-api/openapi.json
/api/worms-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
312 ms
Server probes · 24h
Subscribers
4,445
active
Total calls
25
last 7 days
status Full status page → · 30 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 2,350 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 2350 calls/month
  • 2 req/sec
  • Search, record, tree & names
  • No credit card
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Starter

€6.50 /month

  • 49,500 calls / month
  • 5 requests / second
  • Hard cap (429 above quota, no overage)
  • 49.5k calls/month
  • 5 req/sec
  • Full classification
  • Email support
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Pro

€19.50 /month

  • 219,000 calls / month
  • 12 requests / second
  • Hard cap (429 above quota, no overage)
  • 219k calls/month
  • 12 req/sec
  • Taxonomy harmonisation
  • Priority support
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Mega

€52.50 /month

  • 788,000 calls / month
  • 35 requests / second
  • Hard cap (429 above quota, no overage)
  • 788k calls/month
  • 35 req/sec
  • High-volume biodiversity data
  • Dedicated SLA
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Related APIs

Other APIs with overlapping tags.

Open Tree of Life API

The tree of life as an API — powered by the Open Tree of Life, the project that unifies published phylogenetic trees and taxonomies into a single synthetic tree spanning about 2.3 million named species. Resolve any scientific name to its canonical taxon and Open Tree Taxonomy (OTT) id (cross-referenced to NCBI, GBIF and other sources); read a taxon's classification and full lineage of ancestors up the tree (genus, family, order, class, …); and compute the most recent common ancestor (MRCA) of any set of species — the heart of comparative biology and "how related are these organisms?" questions. From Homo sapiens and the great apes to any branch of plants, fungi, animals and microbes, it is ideal for biology, evolution, ecology, education and bioinformatics tools. An evolutionary-tree / phylogenetics reference — distinct from species-occurrence data (biodiversity / GBIF), marine taxonomy (WoRMS) and sequence databases. Open data from the Open Tree of Life project (CC0).

api.oanor.com/opentol-api

UniProt API

The UniProt protein knowledge base as an API, powered by the official UniProt REST service curated by EMBL-EBI, SIB and PIR. Look up any protein by its UniProt accession for protein and gene names, organism, length, mass, function, keywords, Gene Ontology (GO) terms and linked PDB 3D structures; run full-text protein searches filtered by organism (NCBI taxon id) and Swiss-Prot review status; fetch amino-acid sequences with FASTA, molecular weight and CRC64 checksum; list sequence features such as signal peptides, chains, domains, active and binding sites, modified residues and natural variants, with a by-type breakdown; resolve NCBI taxonomy nodes with their full lineage; and pull reference proteomes with protein counts and genome-assembly ids. Across all kingdoms of life, from human to bacteria. Ideal for bioinformatics pipelines, drug-discovery and proteomics tools, sequence-analysis dashboards, academic research apps and life-science chatbots.

api.oanor.com/uniprot-api

Biodiversity API

Match scientific or common species names to the GBIF taxonomic backbone (kingdom to species), search the global species catalogue, fetch full taxon records with vernacular names, and retrieve geo-located occurrence observations. Ideal for nature, education, research, conservation and citizen-science apps.

api.oanor.com/biodiversity-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for WoRMS Marine Species API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call WoRMS Marine Species API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for WoRMS Marine Species API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does WoRMS Marine Species API cost?
WoRMS Marine Species API has a free tier with 100 calls / month. Paid plans start at €6.50 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is WoRMS Marine Species API GDPR-compliant?
All requests to WoRMS Marine Species API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/worms-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/worms-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/worms-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/worms-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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