Halliday Chains API
Blockchain network information and configuration
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OpenAPI Specification
openapi: 3.2.0
info:
title: Halliday API V2 Chains API
description: 'API V2 for Halliday''s payment infrastructure, supporting onramps, swaps, and offramps.
This API provides a unified interface for cryptocurrency payments, allowing developers to:
- Quote payments across multiple providers
- Execute payments with onramps, swaps, and offramps
- Track payment status and history
## Authentication
API key authentication is required for all endpoints.
'
version: 2.0.0
contact:
name: Contact Halliday
url: https://halliday.xyz
email: support@halliday.xyz
servers:
- url: https://v2.prod.halliday.xyz
description: Base domain
security:
- ApiKeyAuth: []
tags:
- name: Chains
description: Blockchain network information and configuration
paths:
/chains:
get:
summary: Get supported chains
description: 'Get a list of all supported blockchain networks with their configuration details.
'
operationId: getChains
tags:
- Chains
responses:
'200':
description: List of supported chains
content:
application/json:
schema:
type: object
additionalProperties:
$ref: '#/components/schemas/ChainInfo'
example:
ethereum:
chain_id:
\#: 1
network: ethereum
native_currency:
name: Ether
symbol: ETH
decimals: 18
is_testnet: false
explorer: https://etherscan.io/
image: <IMAGE_URL>...
rpc: <RPC_URL>...
arbitrum:
chain_id:
\#: 42161
network: arbitrum
native_currency:
name: Ether
symbol: ETH
decimals: 18
is_testnet: false
explorer: https://arbiscan.io/
image: <IMAGE_URL>...
rpc: <RPC_URL>...
'401':
description: Unauthorized
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
example:
errors:
- kind: other
message: Invalid API key
'403':
description: Forbidden
content:
application/json:
schema:
$ref: '#/components/schemas/ErrorResponse'
example:
errors:
- kind: other
message: Insufficient permissions to access this resource
components:
schemas:
Limits:
type: object
properties:
min:
type: string
description: Minimum amount as a decimal string.
max:
type: string
description: Maximum amount as a decimal string.
AmountDownstreamIssue:
type: object
required:
- kind
- asset
- given
- limits
- source
- message
- reason
properties:
kind:
type: string
enum:
- amount-downstream
asset:
$ref: '#/components/schemas/Asset'
given:
$ref: '#/components/schemas/Amount'
limits:
$ref: '#/components/schemas/Limits'
downstream_limits:
$ref: '#/components/schemas/Limits'
source:
type: string
message:
type: string
reason:
type: string
enum:
- TOO_LOW
- TOO_HIGH
- NO_VALID_AMOUNT
- UNKNOWN
AmountIssue:
type: object
required:
- kind
- asset
- given
- limits
- source
- message
- reason
properties:
kind:
type: string
enum:
- amount
asset:
$ref: '#/components/schemas/Asset'
given:
$ref: '#/components/schemas/Amount'
limits:
$ref: '#/components/schemas/Limits'
downstream_limits:
$ref: '#/components/schemas/Limits'
source:
type: string
message:
type: string
reason:
type: string
enum:
- TOO_LOW
- TOO_HIGH
- NO_VALID_AMOUNT
- UNKNOWN
ProviderIssue:
type: object
required:
- kind
- message
properties:
kind:
type: string
enum:
- provider
message:
type: string
ChainInfo:
type: object
required:
- chain_id
- network
- address_family
- is_testnet
properties:
chain_id:
type: object
description: Chain ID for the network
example:
\#: 1
network:
type: string
description: Network name
example: ethereum
address_family:
type: string
description: Address family for the chain
enum:
- EVM
- SOL
- BTC
- TON
- TRON
- ALEO
- DOGE
- LTC
- XRPL
example: EVM
native_currency:
type: object
properties:
name:
type: string
example: Ether
symbol:
type: string
example: ETH
decimals:
type: number
example: 18
required:
- name
- symbol
- decimals
is_testnet:
type: boolean
description: Whether this is a testnet
example: false
explorer:
type: string
format: uri
description: Block explorer URL
example: https://etherscan.io
image:
type: string
format: uri
description: Chain logo URL
rpc:
type: string
format: uri
description: RPC endpoint URL
Token:
type: string
description: Token identifier in the format "chain:address"
pattern: ^[a-z]+:0x[a-fA-F0-9]+$
example: ethereum:0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
PayinMethodIssue:
type: object
required:
- kind
- message
properties:
kind:
type: string
enum:
- payin_method
message:
type: string
ErrorResponse:
type: object
required:
- errors
properties:
errors:
type: array
items:
$ref: '#/components/schemas/Issue'
description: Error response for known errors
OwnerIssue:
type: object
required:
- kind
- message
- mitigation
properties:
kind:
type: string
enum:
- owner
message:
type: string
mitigation:
type: string
enum:
- change
- verify
Amount:
type: string
description: A decimal amount string.
FundingIssue:
type: object
required:
- kind
- token
- balance
properties:
kind:
type: string
enum:
- funding
token:
$ref: '#/components/schemas/Token'
balance:
type: string
description: Current token balance at the funding address.
Issue:
oneOf:
- $ref: '#/components/schemas/AmountIssue'
- $ref: '#/components/schemas/AmountDownstreamIssue'
- $ref: '#/components/schemas/FundingIssue'
- $ref: '#/components/schemas/OwnerIssue'
- $ref: '#/components/schemas/GeolocationIssue'
- $ref: '#/components/schemas/ProviderIssue'
- $ref: '#/components/schemas/PayinMethodIssue'
- $ref: '#/components/schemas/OtherIssue'
- $ref: '#/components/schemas/UnknownIssue'
discriminator:
propertyName: kind
UnknownIssue:
type: object
required:
- kind
- message
properties:
kind:
type: string
enum:
- unknown
message:
type: string
OtherIssue:
type: object
required:
- kind
- message
properties:
kind:
type: string
enum:
- other
message:
type: string
Asset:
type: string
description: Identifier in the token format ("chain:address") or fiat currency code ("USD")
example: ethereum:0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
GeolocationIssue:
type: object
required:
- kind
- message
properties:
kind:
type: string
enum:
- geolocation
message:
type: string
securitySchemes:
ApiKeyAuth:
type: http
scheme: bearer
bearerFormat: API_KEY