geocode.address

Forward geocoding — free-text address or place name → latitude/longitude plus structured address components (houseNumber, road, suburb, city, county, state, postcode, country, countryCode). Query: q (2-500 chars), limit (1-10, default 5), country (optional 2-letter ISO 3166-1 bias). Underlying data is OpenStreetMap (ODbL). Sister: /api/geocode/reverse.

price
$0.0010 USDC per call
method
GET/api/geocode/address
payment
x402 v2 · EIP-3009 transferWithAuthorization · USDC on Base mainnet
auth
None. Sign the payment, retry with PAYMENT-SIGNATURE.
tier
Tier 0 — no paid upstream

Parameters

NameTypeDescription
qrequiredstring
min 2 chars · max 500 chars
limitinteger
min 1 · max 10
countrystring
match ^[a-z]{2}$

Code samples

cURLbash
# 1. Probe with no auth → 402 envelope with PaymentRequirements
curl -sS 'https://2s.io/api/geocode/address?q=xx&limit=5&country=example'

# 2. Sign + retry with PAYMENT-SIGNATURE:
curl -sS 'https://2s.io/api/geocode/address?q=xx&limit=5&country=example' \
  -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/geocode/address?q=xx&limit=5&country=example'
TypeScript / Node — @2sio/sdktypescript
import { TwoS } from '@2sio/sdk'

const client = new TwoS({
  privateKey: process.env.EVM_PRIVATE_KEY as `0x${string}`,
})

const result = await client.geocode.address({
  "q": "xx",
  "limit": 5,
  "country": "example"
})

console.log('endpoint:', result.endpoint)
console.log('cost:', result.costUsd, 'USDC')
console.log('tx:', result.settlement?.txHash)
console.log('data:', result.data)
Python — 2siopython
import os
from twosio import TwoS

client = TwoS(private_key=os.environ["EVM_PRIVATE_KEY"])

result = client.geocode.address(q="xx", limit=5, country="example")

print("endpoint:", result.endpoint)
print("cost:", result.cost_usd, "USDC")
print("tx:", (result.settlement or {}).get("tx_hash"))
print("data:", result.data)
MCP — Claude Desktop / AgentKit / any MCP hostjson
// 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": "geocode.address",
    "arguments": {
      "q": "xx",
      "limit": 5,
      "country": "example"
    }
  }
}
LangChain agent — langchain-twosiopython
# pip install langchain-twosio langchain-anthropic
import os
from langchain_twosio import get_twosio_tools
from langchain_anthropic import ChatAnthropic
from langgraph.prebuilt import create_react_agent

tools = get_twosio_tools(private_key=os.environ["EVM_PRIVATE_KEY"])
llm = ChatAnthropic(model="claude-haiku-4-5", temperature=0)
agent = create_react_agent(llm, tools)

# The agent will pick "twosio_geocode_address" when the prompt matches.
result = agent.invoke({
    "messages": [("user", "...prompt that requires geocode.address...")]
})
print(result["messages"][-1].content)
LlamaIndex agent — llama-index-tools-twosiopython
# pip install llama-index-tools-twosio llama-index-llms-anthropic
import asyncio, os
from llama_index_tools_twosio import get_twosio_tools
from llama_index.llms.anthropic import Anthropic
from llama_index.core.agent.workflow import FunctionAgent

tools = get_twosio_tools(private_key=os.environ["EVM_PRIVATE_KEY"])
llm = Anthropic(model="claude-haiku-4-5")
agent = FunctionAgent(tools=tools, llm=llm)

# The agent will pick "twosio_geocode_address" when the prompt matches.
response = asyncio.run(agent.run("...prompt that requires geocode.address..."))
print(response)

Discovery

2s.io is x402-native. Every call is paid per-request from a USDC-funded EVM wallet on Base — no signup, no API keys, no monthly fees. Source code: github.com/2s-io/sdk.