> ## Documentation Index > Fetch the complete documentation index at: https://docs.signalarc.fun/llms.txt > Use this file to discover all available pages before exploring further. # GRANT READINESS # Grant Readiness SignalArc is positioned as Arc-native prediction market infrastructure for USDC-settled event markets, market intelligence, resolver workflow, and agent-readable APIs. This document separates implemented and live work from testnet prototype behavior, planned work, and unknown / not documented behavior. It documents current readiness honestly; it does not claim full grant submission completeness. ## Live Surfaces | Surface | URL | Status | | ------------------- | ----------------------------------------------------------------------------- | ------------------------------------------------------ | | Frontend | [https://signalarc.fun](https://signalarc.fun) | Live on Vercel. | | Backend API | [https://api.signalarc.fun](https://api.signalarc.fun) | Live on GCP Cloud Run service `signalarc-backend-api`. | | Production database | GCP Cloud SQL PostgreSQL, schema version 18. | Live. | | Custom GPT | Preconfigured to call [https://api.signalarc.fun](https://api.signalarc.fun). | Live. | | Docs | [https://docs.signalarc.fun](https://docs.signalarc.fun) | Documentation deployment target. | ngrok URLs are local development conveniences only and are never used by judges or end users. ## Implemented | Area | Current state | | --------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Frontend MVP | Live Next.js app at [https://signalarc.fun](https://signalarc.fun). Local development still supported via `pnpm dev:web`. | | Backend API | Live Go/Chi API at [https://api.signalarc.fun](https://api.signalarc.fun) implementing health, readiness, schema validation, markets, trade intents, positions, resolutions, settlements, agent markets, and Arc contract metadata. | | Agent surface | Live endpoints for onboarding start, OTP verify, onboarding lookup, session, wallet, balance, ARC-TESTNET faucet, and market intent preview/confirm/execute. | | Custom GPT | Preconfigured against the live API. End users and judges do not need to import OpenAPI manually. | | Local backend stack | Docker Compose runs PostgreSQL and backend. | | Database schema | Production schema migrated to version 18 on GCP Cloud SQL. | | Backend container | Includes Node/npm and the global Circle CLI (`@circle-fin/cli`) so ARC-TESTNET agent flows run inside the container image. | | Wallet frontend | RainbowKit/Wagmi/Viem external wallet UI. | | Arc Testnet contracts | `SignalArcMarket`, `SignalArcAgentMarket`, and `SignalArcAgentMarketFactory` deployed on Arc Testnet. | ## Available Capabilities | Capability | Status | | ----------------------------------------------------- | ---------- | | Health | Available. | | Onboarding | Available. | | OTP verify | Available. | | Session | Available. | | Wallet | Available. | | Balance | Available. | | ARC-TESTNET faucet | Available. | | Market intent lifecycle (preview / confirm / execute) | Available. | ## Out of Scope | Capability | Status | | -------------------------------------------------------------------- | ---------------------------- | | Arbitrary transfer | Not available. Out of scope. | | Withdraw / deposit | Not available. Out of scope. | | Logout / agent session management | Not available. Out of scope. | | Mainnet funding | Not available. Out of scope. | | Arc mainnet deployment | Not deployed. Out of scope. | | API key enforcement, paid access, autonomous trading, production SLA | Not implemented. | ## Testnet Prototype | Area | Current state | | ------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------- | | Contracts | Arc Testnet `SignalArcMarket`, `SignalArcAgentMarket`, and `SignalArcAgentMarketFactory` prototypes. | | Browser transaction flow | Frontend includes Arc Testnet USDC approval and `openPosition`. | | Agent transaction flow | Backend Circle Agent Wallet provider handles agent-driven create/buy/close/resolve/claim/cancel/refund on Arc Testnet through the Circle CLI. | | Explorer links | Frontend generates Arcscan transaction links. | | Settlement | Prototype contracts support claim/refund paths in Solidity, but production settlement is not approved. | ## Circle Relevance | Area | Status | | ------------------------- | ------------------------------------------------------------------------------------------------------ | | USDC collateral | Prototype contracts use a USDC-like ERC20 collateral model and the Arc Testnet USDC interface address. | | Circle Agent Wallet | Live in the agent flow on Arc Testnet through the Circle CLI bundled in the backend container. | | Circle Developer Platform | Used for ARC-TESTNET agent wallet operations only. | | Circle Agents | Used through the Custom GPT preconfigured to call the live API. | | Circle API keys | Must not be committed or exposed. | ## Grant Submission Surface For grant judges, the recommended testing surface is: 1. The published SignalArc GPT Agent (preconfigured to [https://api.signalarc.fun](https://api.signalarc.fun)). 2. The live frontend at [https://signalarc.fun](https://signalarc.fun). 3. The live API at [https://api.signalarc.fun](https://api.signalarc.fun). Judges do not need to import OpenAPI manually. The end-to-end testing flow is documented in [Agent API](./AGENT_API.md#judge--user-testing-guide). ## Remaining Gaps * Demo video. * Product README and technical README completeness for grant submission packaging. * Production monitoring/logging baseline documentation. * Risk/compliance disclaimer for grant submission. * Audit status (none claimed). * Deeper Circle integration features beyond ARC-TESTNET agent flows. ## Unknown / Not Documented * Arc mainnet deployment path for SignalArc: unknown / not documented in this repository. * Production custody model: unknown / not documented. * Production settlement approval: unknown / not documented. * Compliance approval: unknown / not documented. ## Readiness Assessment SignalArc has a live frontend, a live backend, a live ARC-TESTNET agent flow accessible through a published Custom GPT, an Arc Testnet contract prototype, and a clear API-first product direction. Remaining work is largely grant submission packaging and production monitoring/audit material, not core product implementation.