Resolve any organism by scientific or common name to the GBIF taxonomic backbone — the canonical free reference for life on Earth. Returns the accepted scientific name + canonical name, taxonomic rank and status, the match type/confidence, the full classification (kingdom → phylum → class → order → family → genus → species), up to 8 English vernacular (common) names, the count of recorded occurrences worldwide, and the GBIF species URL. Biodiversity, ecology, education, and as a taxonomy normalizer for other pipelines. Fuzzy-matches misspellings. CC-BY GBIF data.
/api/bio/speciesPAYMENT-SIGNATURE.The species API is a pay-per-call bio endpoint built for AI agents and autonomous software. Resolve any organism by scientific or common name to the GBIF taxonomic backbone — the canonical free reference for life on Earth.
There is no signup and no API key. An agent (or any HTTP client) hits the endpoint, receives an x402 "402 Payment Required" challenge, signs a sub-cent USDC payment on Base or Solana, and retries — the data comes back on the paid request. That makes it a drop-in species data source for an agent tool-use loop, an MCP host, or a backend that needs bio data on demand without onboarding to yet another vendor portal.
| Name | Type | Description |
|---|---|---|
namerequired | string | min 2 chars · max 120 chars |
# 1. Probe with no auth → 402 envelope with PaymentRequirements curl -sS 'https://2s.io/api/bio/species?name=xx' # 2. Sign + retry with PAYMENT-SIGNATURE: curl -sS 'https://2s.io/api/bio/species?name=xx' \ -H 'PAYMENT-SIGNATURE: <base64-json-payload>' # Or use the canonical runner (handles probe → sign → retry): # EVM_PRIVATE_KEY=0x... node --env-file=.env.local \ # --experimental-strip-types scripts/x402-pay.ts \ # 'https://2s.io/api/bio/species?name=xx'
import { TwoS } from '@2sio/sdk'
const client = new TwoS({
privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})
const result = await client.bio.species({
"name": "xx"
})
console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)import os
from twosio import TwoS
client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])
result = client.bio.species(name="xx")
print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)// 1. Add @2sio/mcp to your MCP host config (Claude Desktop example below).
// EVM_PRIVATE_KEY funds x402 payments per call.
// claude_desktop_config.json
{
"mcpServers": {
"2sio": {
"command": "npx",
"args": ["-y", "@2sio/mcp"],
"env": { "EVM_PRIVATE_KEY": "0x..." }
}
}
}
// 2. Once the server is running, agents call this tool via standard MCP:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "bio.species",
"arguments": {
"name": "xx"
}
}
}| Field | Type | Description |
|---|---|---|
ok | boolean | one of: true |
items | array | |
total | integer | Total matching rows upstream; null when unknown. |
source | object |
{
"ok": true,
"items": [
{
"species": {
"usageKey": 1,
"scientificName": "example",
"canonicalName": "example",
"rank": "example",
"taxonomicStatus": "example",
"matchType": "example",
"matchConfidence": 1,
"classification": {
"kingdom": "example",
"phylum": "example",
"class": "example",
"order": "example",
"family": "example",
"genus": "example",
"species": "example"
},
"vernacularNames": [
"example"
],
"occurrenceCount": 1,
"gbifUrl": "example"
}
}
],
"total": 1,
"source": {
"provider": "example",
"url": "example",
"license": "example"
}
}