Starchild Relay

Overview

Data sources	17
Networks	Base (eip155:8453), Monad (eip155:143), Robinhood Chain (eip155:4663), and X Layer (eip155:196)
Settlement assets	USDC on Base, Monad, and X Layer; USDG on Robinhood Chain
Minimum deposit	$1.00 in the selected settlement asset
Per-call pricing	$0.0002 to $0.01, depending on source
Base URL	https://community.iamstarchild.com/5108-data-api-proxy/

What Relay is

Starchild Relay is a multi-source data proxy built for agent workflows. An agent sends requests through one gateway while Relay routes each request to the selected provider. It works with agents built on Starchild and with agents running on other frameworks or infrastructure.

Instead of opening and maintaining separate accounts with every provider, an agent can access all 17 sources through one prepaid stablecoin balance. Relay manages the upstream provider credentials. The calling agent uses the x402 payment flow rather than a provider API key.

What it connects to

Relay covers crypto spot and derivatives, stocks, forex, commodities, US options, DeFi and onchain analytics, technical indicators, social data, web search and scraping, creator data, maps, and China A-shares.

Category	Sources
Markets	CoinGecko, CoinGlass, Twelve Data, Massive, TAAPI
DeFi and onchain	Birdeye, DeBank, DefiLlama, 1inch
Web and social	Brave Search, Firecrawl, Apify, TwitterAPI.io, ScrapeCreators, LunarCrush
Other	Google Maps, Tushare

How requests work

Relay is a transparent proxy. Add the source name before the provider's native API path:

https://community.iamstarchild.com/5108-data-api-proxy/{source}/{provider-path}

Request methods, parameters, and response formats follow the upstream provider's API wherever possible. For example:

GET https://community.iamstarchild.com/5108-data-api-proxy/coingecko/api/v3/simple/price?ids=bitcoin&vs_currencies=usd

An unpaid request returns an HTTP 402 response containing the payment requirements. An x402-capable client signs the authorization and retries the request with the payment payload. Relay credits the prepaid balance, deducts the source-specific call cost, and returns the upstream response.

How payment works

Relay uses a prepaid x402 model:

1. Send a request to a Relay endpoint.
2. Receive an HTTP 402 challenge with the accepted network, asset, recipient, and deposit requirement.
3. Sign the authorization for the selected settlement asset and retry using an x402-compatible client.
4. Relay credits the prepaid balance and deducts each successful call at the source-specific rate.
5. Future requests continue using the balance until it needs to be topped up.

The minimum deposit currently advertised by Relay's live x402 discovery document is $1.00 in the selected settlement asset. Individual calls cost between $0.0002 and $0.01.

Who it is for

Relay is for builders who need agents to fetch reliable external data without distributing provider credentials or maintaining separate billing integrations. The calling agent does not need to be a Starchild agent. Any agent or application that can make HTTP requests and complete the x402 flow can connect.

Data sources and pricing

Source	Coverage	Route	Per call
Twelve Data	Stocks, forex, commodities	/twelvedata/*	$0.0002
Massive	US options data	/massive/*	$0.0002
TwitterAPI.io	X posts, search, profiles	/twitterapi/*	$0.00045
CoinGecko	Crypto spot prices, OHLC, market cap	/coingecko/*	$0.0005
CoinGlass	Funding rates, open interest, liquidations	/coinglass/*	$0.0005
TAAPI	Technical indicators	/taapi/*	$0.0005
DefiLlama	TVL, yields, protocol statistics	/defillama/*	$0.001
1inch	DEX pricing and swap routes	/oneinch/*	$0.001
LunarCrush	Crypto social intelligence	/lunarcrush/*	$0.001
Tushare	China A-share market data	/tushare/*	$0.001
Firecrawl	Web extraction and crawling	/firecrawl/*	$0.003
ScrapeCreators	YouTube, TikTok, Instagram data	/scrapecreators/*	$0.004
Google Maps	Geocoding and places	/googlemaps/*	$0.00566
Brave Search	Web search	/brave/*	$0.01
Birdeye	Solana and EVM token analytics	/birdeye/*	$0.01
DeBank	Wallet portfolios and DeFi data	/debank/*	$0.01
Apify	Web automation and datasets	/apify/*	$0.01

Pricing is deducted from the prepaid balance. Read the live x402 challenge before authorizing a payment, since service configuration may change.

Calling Relay

Use an x402-compatible HTTP client that supports EVM stablecoin authorizations. The exact client initialization depends on the library and version you choose, but the request target remains the same.

Inspect the payment challenge

curl -i \
  "https://community.iamstarchild.com/5108-data-api-proxy/coingecko/api/v3/simple/price?ids=bitcoin&vs_currencies=usd"

The response should have status 402 Payment Required and describe the accepted payment options. Your x402 client signs the selected authorization and retries the same URL with the required payment header.

Proxy pattern

GET|POST https://community.iamstarchild.com/5108-data-api-proxy/{source}/{provider-path}

Both GET and POST routes are advertised for all 17 sources. Relay's OpenAPI specification also describes generic proxy support for other HTTP methods where the upstream allows them.

Treasury and settlement

Parameter	Value
Model	Prepaid
Minimum deposit	$1.00 in the selected settlement asset, according to live discovery
Networks	Base, Monad, Robinhood Chain, and X Layer
Facilitator	https://starchild-x402-facilitator.fly.dev
Treasury wallet	0xa709b6534f392c5F4CfB986A329B734eCDdC8c6f

Supported assets

Network	CAIP-2 network ID	Settlement asset contract
Base	eip155:8453	0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Monad	eip155:143	0x754704bc059f8c67012fed69bc8a327a5aafb603
Robinhood Chain	eip155:4663	Read from the live 402 challenge
X Layer	eip155:196	0x74b7f16337b8972027f6196a17a631ac6de26d22

Robinhood Chain uses USDG for Relay settlement. Its asset contract is intentionally not hard-coded here because it is not currently present in Relay's public discovery document. Verify the network, asset contract, recipient, and amount against the live 402 response before signing.

Machine-readable discovery

Document	URL
x402 discovery	https://community.iamstarchild.com/5108-data-api-proxy/.well-known/x402
OpenAPI specification	https://community.iamstarchild.com/5108-data-api-proxy/openapi.json

The x402 discovery document advertises the supported networks, recipient, facilitator, routes, and prepaid payment parameters. The OpenAPI specification describes gateway management endpoints and provider proxy routes.

Notes for agents

• Keep the source prefix in the path, such as /coingecko/ or /brave/.
• Preserve the provider's native path, query parameters, request body, and method after the source prefix.
• Treat 402 Payment Required as the start of the payment flow, rather than an API error.
• No upstream provider API key is required from the calling agent.
• Use the trailing slash in the base URL when constructing relative paths.
• Read the live challenge before signing because pricing and supported payment options can change.