Kurage Crypto Brainkcbrain — OSS trading intelligence, metered via x402
19 SKILLS · DEEPSEEK V4 FLASH · PAY PER CALL

Five open-source trading intelligences. One metered brain.

Kurage Crypto Brain vendors the LLM intelligence of five open-source crypto trading projects — ai-hedge-fund-crypto, CryptoTradingAgents, Vibe-Trading, LLM_trader, HELM Agents — pinned to exact commits with full attribution, and runs them on DeepSeek V4 Flash (local Gemma 4 12B is also selectable). You pay per call via x402 (USDC on Base, or JPYC on Polygon): no signup, no subscription — the 402 challenge is the onboarding. Judgment only: the API holds no exchange credentials and cannot place orders.

Test it free in the Workbench GitHub x402 Discovery
Kurage — jellyfish AI VTuber

Kurage 🪼

The same jellyfish AI VTuber behind kfreqai and kfxai. This is her crypto brain, for rent — the sibling of Kurage FX Brain.

⚠️ Analysis and judgment only — never investment advice, and never order execution. Outputs are LLM opinions grounded in the evidence you supply; the API honestly reports missing data instead of inventing it. Crypto trading involves substantial risk, including leverage risk.

The vendored anthology

Pinned commits, permissive licenses only, upstream attribution in every response. No license = not vendored (we checked).

MIT

ai-hedge-fund-crypto

The exact generate_trading_decision() portfolio-manager prompt, unpatched — synthesizes supplied analyst signals into a position proposal. Single call.

Apache-2.0

CryptoTradingAgents

Bull researcher → bear researcher → research-manager debate chain, on real evidence you supply. Three sequential LLM calls. Flat $0.05 per call like every other skill.

MIT

Vibe-Trading

The crypto_trading_desk.yaml preset: funding/basis, liquidation, and flow specialist roles chained into a desk-risk-manager synthesis. Multi-agent chain. Flat $0.05 per call.

MIT

LLM_trader

Fresh-analysis, prompt-version, and decision-gating rules from the upstream prompt builder — trend, momentum, funding, confluence, risk/reward in one structured call.

Apache-2.0

HELM Agents

Four analyst prompts (market, sentiment, news, fundamentals) chained into a portfolio-manager consensus rating. Five sequential LLM calls. Flat $0.05 per call.

ORIGINAL · CORE

Core judgment + market intelligence

Not vendored — kcbrain originals: single-call technical / on-chain / sentiment / full-perspective analysis, bull-bear debate mapping, trade / risk / portfolio / review judgments, plus multi-pair opportunity and flow ranking, anomaly detection, liquidation-cascade risk, and a single-pair evidence-bounded signal. Uses only the evidence you supply.

TRUST BOUNDARY

The brain can't touch money

No exchange credentials, no order sizes, no execution — ever. Visible errors instead of silent fallbacks. Your trading body (like the open-source kfreqai, or NOFX via the OpenAI-compatible /v1/chat/completions integration) keeps the final risk gates.

Try before you pay — two ways

We built verification in, because "trust me" is not a sales pitch.

1. The free browser Workbench

The Crypto Intelligence Workbench is a live console against the same API: pick an endpoint, load a BTC/USDT preset or paste your own evidence JSON, and read the structured judgment — with a health indicator showing the DeepSeek backend is actually up. Judge the quality yourself before spending a cent.

2. Verify the x402 machinery without paying

Every paid endpoint answers unpaid requests with a signed 402 challenge — so you can confirm the exact price, wallet, and network before any money moves:

curl -X POST https://bittensorman.xyz/kcbrain/decide/trade
# → HTTP 402: {"maxAmountRequired":"1000", "payTo":"0x444f…", "network":"base", …}

The full catalog is machine-readable at https://bittensorman.xyz/.well-known/x402.json — 24 paths under /kcbrain/. JPYC rail: https://exbridge.ddns.net:18331/kcbrain/… (7.5 JPYC per call, including the chained multi-agent skills). Also on Bankr (single-call skills only, flat $0.05).

Access and marketplace status

The same brain is published across every x402 agent marketplace — Coinbase CDP, Bankr, PayAPI, Agent402, JPYC and Virtuals ACP — plus RapidAPI card billing and OSS self-hosting.

LIVE · DIRECT

Coinbase CDP x402

Twenty-four discoverable paths under /kcbrain/, paid in USDC on Base. Every call costs $0.05, single judgments and multi-agent chains alike. The public 402 challenge is both payment negotiation and API onboarding.

Open live discovery →

LIVE · BANKR

Bankr x402

A wallet-native x402 listing for AI agents. Pay per single judgment in USDC on Base at a flat $0.05, using the same 24-path hosted brain.

Open Bankr →

LIVE · PAYAPI

PayAPI Market

The same x402 provider (bittensorman, wallet 0x444fad…) is live and verified on PayAPI Market. Agents that discover the provider there reach the identical hosted brain through the CDP gateway.

Open PayAPI provider →

LIVE · AGENT402

Agent402

Listed as an x402 agent on Agent402 under the same provider and Base wallet, so autonomous agents that shop on Agent402 can pay for and call the hosted skills.

Open Agent402 agent →

LIVE · JPYC

JPYC rail

A yen-stablecoin settled gateway. The same skills are billed at 7.5 JPYC per call (single and multi-agent chain, at exbridge.ddns.net:18331/kcbrain/….

LIVE · VIRTUALS ACP

Virtuals Agent Commerce Protocol

Listed on Virtuals' ACP as part of the "Kurage AI Project", so agents can buy the judgment skills agent-to-agent through USDC escrow.

RAPIDAPI · LIVE

Card billing (a separate rail from x402)

Kurage Crypto Brain is live on RapidAPI. No crypto wallet required — use the same judgment skills with pay-as-you-go card billing via an API key.

Endpoint: kurage-crypto-brain.p.rapidapi.com (auth with the X-RapidAPI-Key header). Open on RapidAPI →

NOFX · OSS

Self-host, or integrate with NOFX

kcbrain can be selected as the judgment provider from the localized NOFX integration, while exchange credentials and paper/live execution remain in NOFX. Self-hosting kcbrain from GitHub requires no per-call marketplace payment.

Self-host from GitHub →

Pricing

Per call, settled on-chain. No accounts, no minimums.

Skill groupExamplesUSDC (Base)JPYC (Polygon)
Core crypto judgment (9)technical / onchain / sentiment / debate / decide / risk / portfolio / review / full$0.057.5 JPYC
Market intelligence (5)opportunity/flow ranking, anomaly, liquidation-risk, pair signal$0.057.5 JPYC
Single-call vendor (2)ai-hedge-fund-crypto/portfolio, llm-trader/analyze$0.057.5 JPYC
Multi-agent chained vendor (3)crypto-trading-agents/debate, vibe-trading/research, helm-agents/consensus — 3-5 sequential calls$0.057.5 JPYC

Stack

FastAPI · DeepSeek V4 Flash (Gemma 4 12B via Ollama also selectable) · vendored OSS at pinned commits · x402 (USDC on Base / JPYC on Polygon) · Bankr · Coinbase CDP Bazaar

Part of the vibe trading toolkit

Growing a strategy by describing it to an AI and letting backtest numbers decide is what we call vibe trading. kcbrain is the piece that adds an AI judgment gate to a crypto strategy built that way — judgment only, never order execution. Full toolkit: vibe trading guide. Systems in production: kfreqai (crypto) and kfxai (FX).

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