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	Live on Vercel.
Backend API	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.	Live.
Docs	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. Local development still supported via `pnpm dev:web`.
Backend API	Live Go/Chi API at 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:

The published SignalArc GPT Agent (preconfigured to https://api.signalarc.fun).
The live frontend at https://signalarc.fun.
The live API at https://api.signalarc.fun.

Judges do not need to import OpenAPI manually. The end-to-end testing flow is documented in Agent API.

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.

Overview

API and Agents

Arc and Wallet

Deployment and Security

Legal

GRANT READINESS

Grant Readiness

Live Surfaces

Implemented

Available Capabilities

Out of Scope

Testnet Prototype

Circle Relevance

Grant Submission Surface

Remaining Gaps

Unknown / Not Documented

Readiness Assessment

​Grant Readiness

​Live Surfaces

​Implemented

​Available Capabilities

​Out of Scope

​Testnet Prototype

​Circle Relevance

​Grant Submission Surface

​Remaining Gaps

​Unknown / Not Documented

​Readiness Assessment

Grant Readiness

Live Surfaces

Implemented

Available Capabilities

Out of Scope

Testnet Prototype

Circle Relevance

Grant Submission Surface

Remaining Gaps

Unknown / Not Documented

Readiness Assessment