Routescan (Snowtrace) Contracts API
Smart contract ABI, source code, and verification endpoints.
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OpenAPI Specification
openapi: 3.2.0
info:
title: Routescan (Snowtrace) Etherscan-Compatible Accounts Contracts API
description: 'Routescan is the first multichain ecosystem explorer, search, API, and analytics platform for all major EVM chains. Operating as Snowtrace for Avalanche C-Chain, Routescan provides high-speed REST APIs compatible with the Etherscan API format, delivering near real-time access to transactions, token transfers, smart contract data, and event logs across Avalanche C-Chain, Arbitrum, Optimism, Base, and 40+ other EVM networks. A single API key grants multichain access across all indexed chains.
'
version: '2.0'
contact:
name: Routescan Support
url: https://snowtrace.io/contactus
termsOfService: https://snowtrace.io/
servers:
- url: https://api.routescan.io/v2/network/mainnet/evm/{chainId}/etherscan/api
description: Routescan Multichain API (mainnet)
variables:
chainId:
default: '43114'
description: 'EVM chain ID. Use 43114 for Avalanche C-Chain mainnet, 43113 for Avalanche Fuji testnet.
'
- url: https://api.routescan.io/v2/network/testnet/evm/{chainId}/etherscan/api
description: Routescan Multichain API (testnet)
variables:
chainId:
default: '43113'
description: EVM chain ID for testnet networks.
security:
- apiKey: []
- {}
tags:
- name: Contracts
description: Smart contract ABI, source code, and verification endpoints.
paths:
/contract/getabi:
get:
operationId: getContractABI
summary: Get contract ABI
description: 'Returns the ABI (Application Binary Interface) for a verified smart contract.
'
tags:
- Contracts
parameters:
- name: module
in: query
required: true
schema:
type: string
enum:
- contract
- name: action
in: query
required: true
schema:
type: string
enum:
- getabi
- $ref: '#/components/parameters/addressParam'
- $ref: '#/components/parameters/apikeyParam'
responses:
'200':
description: Contract ABI as JSON string
content:
application/json:
schema:
allOf:
- $ref: '#/components/schemas/ApiResponse'
- type: object
properties:
result:
type: string
description: JSON-encoded ABI array.
/contract/getsourcecode:
get:
operationId: getContractSourceCode
summary: Get contract source code
description: 'Returns the Solidity source code and compilation metadata for a verified smart contract.
'
tags:
- Contracts
parameters:
- name: module
in: query
required: true
schema:
type: string
enum:
- contract
- name: action
in: query
required: true
schema:
type: string
enum:
- getsourcecode
- $ref: '#/components/parameters/addressParam'
- $ref: '#/components/parameters/apikeyParam'
responses:
'200':
description: Contract source code details
content:
application/json:
schema:
allOf:
- $ref: '#/components/schemas/ApiResponse'
- type: object
properties:
result:
type: array
items:
type: object
properties:
SourceCode:
type: string
ABI:
type: string
ContractName:
type: string
CompilerVersion:
type: string
OptimizationUsed:
type: string
Runs:
type: string
ConstructorArguments:
type: string
EVMVersion:
type: string
Library:
type: string
LicenseType:
type: string
Proxy:
type: string
Implementation:
type: string
SwaggerVersion:
type: string
/contract/getcontractcreation:
get:
operationId: getContractCreation
summary: Get contract creator and creation transaction
description: 'Returns the creator address and creation transaction hash for up to 5 smart contract addresses.
'
tags:
- Contracts
parameters:
- name: module
in: query
required: true
schema:
type: string
enum:
- contract
- name: action
in: query
required: true
schema:
type: string
enum:
- getcontractcreation
- name: contractaddresses
in: query
required: true
schema:
type: string
description: Comma-separated list of up to 5 contract addresses.
- $ref: '#/components/parameters/apikeyParam'
responses:
'200':
description: Contract creation details
content:
application/json:
schema:
allOf:
- $ref: '#/components/schemas/ApiResponse'
- type: object
properties:
result:
type: array
items:
type: object
properties:
contractAddress:
type: string
contractCreator:
type: string
txHash:
type: string
/contract/verifysourcecode:
post:
operationId: verifySourceCode
summary: Verify smart contract source code
description: 'Submits a smart contract''s Solidity source code for verification. Limited to 250 verifications per day. Returns a GUID for status polling.
'
tags:
- Contracts
requestBody:
required: true
content:
application/x-www-form-urlencoded:
schema:
type: object
required:
- module
- action
- contractaddress
- sourceCode
- codeformat
- contractname
- compilerversion
properties:
module:
type: string
enum:
- contract
action:
type: string
enum:
- verifysourcecode
contractaddress:
type: string
description: The deployed contract address.
sourceCode:
type: string
description: Solidity source code.
codeformat:
type: string
enum:
- solidity-single-file
- solidity-standard-json-input
contractname:
type: string
compilerversion:
type: string
example: v0.8.19+commit.7dd6d404
optimizationUsed:
type: integer
enum:
- 0
- 1
runs:
type: integer
constructorArguments:
type: string
evmversion:
type: string
licenseType:
type: integer
description: SPDX license ID (e.g. 3=MIT, 5=GPL-2.0, etc.)
apikey:
type: string
responses:
'200':
description: Verification submission GUID
content:
application/json:
schema:
allOf:
- $ref: '#/components/schemas/ApiResponse'
- type: object
properties:
result:
type: string
description: GUID to use with checkverifystatus.
/contract/checkverifystatus:
get:
operationId: checkVerifyStatus
summary: Check verification submission status
description: 'Polls the status of a contract source code verification submission using the GUID returned by verifysourcecode.
'
tags:
- Contracts
parameters:
- name: module
in: query
required: true
schema:
type: string
enum:
- contract
- name: action
in: query
required: true
schema:
type: string
enum:
- checkverifystatus
- name: guid
in: query
required: true
schema:
type: string
description: GUID returned from the verifysourcecode submission.
- $ref: '#/components/parameters/apikeyParam'
responses:
'200':
description: Verification status
content:
application/json:
schema:
allOf:
- $ref: '#/components/schemas/ApiResponse'
- type: object
properties:
result:
type: string
description: 'Pass: Verified or Pending in queue or Fail: reason.'
components:
schemas:
ApiResponse:
type: object
properties:
status:
type: string
enum:
- '0'
- '1'
description: 1 for success, 0 for error.
message:
type: string
description: Human-readable status message (OK or NOTOK).
result:
description: The response payload (varies by endpoint).
required:
- status
- message
- result
parameters:
apikeyParam:
name: apikey
in: query
required: false
schema:
type: string
description: API key for authenticated access. Use "placeholder" for free tier.
addressParam:
name: address
in: query
required: true
schema:
type: string
description: Ethereum-compatible wallet or contract address (0x-prefixed, 42 chars).
securitySchemes:
apiKey:
type: apiKey
in: query
name: apikey
description: 'Optional for free-tier usage (2 req/s, 10,000 calls/day). Register at routescan.io for increased limits.
'