Barker Stablecoin Skills

The official AI skill suite + MCP server from Barker — Yield Primitive for the Agent Economy. Real-time data from 500+ protocols and 20+ CEX, no API key required.

Powered by Barker — Yield Primitive for the Agent Economy. Every agent touching stablecoins eventually plugs in. Free for individuals · Enterprise API for institutions.

接入 Agent 经济的稳定币收益底座 → barker.money

Quick Start

One-line install (recommended)

# Install all 7 skills into ~/.claude/skills/
npx @barkermoney/skills install --all

# Or pick specific ones
npx @barkermoney/skills install stablecoin-yield-radar yield-strategy-advisor

# Other commands
npx @barkermoney/skills list             # show bundled + installed
npx @barkermoney/skills update           # re-install latest of currently installed
npx @barkermoney/skills remove <name>    # uninstall one
npx @barkermoney/skills --help           # full help

Then restart Claude Code (or your agent runtime) to activate. Override the install dir with --target <dir> or $BARKER_SKILLS_DIR.

Updating often? Install the CLI globally so you can drop the npx prefix:

npm install -g @barkermoney/skills
skills install --all     # then from any directory
skills update            # later, pull latest skill content

MCP server (stdio)

Need direct API access from a Claude Code / Cursor / Cline session — without going through the bundled skills? Run barker-mcp, a stdio MCP server that wraps the Barker public API (/defi/vaults, /market/overview, /market/trend) as three callable tools. Zero auth, same 30 req/min rate limit as the public API.

# Register with Claude Code (user scope, persists across sessions)
claude mcp add -s user barker -- npx -y -p @barkermoney/skills barker-mcp

Then restart Claude Code. Three tools become available:

Smoke test outside of an agent host:

npx -p @barkermoney/skills barker-mcp
# speaks MCP over stdio; pipe JSON-RPC frames to interact

OKX Wallet Plugin Store

npx skills add okx/plugin-store --skill <skill-name>
# e.g.: npx skills add okx/plugin-store --skill stablecoin-yield-radar

Manual (git clone)

git clone https://github.com/YBSbarker/barker-stablecoin-skills.git
cp -r barker-stablecoin-skills/skills/<skill-name> ~/.claude/skills/

Anthropic Plugin Marketplace

Each skill is shipped with .claude-plugin/plugin.json and is compatible with the Claude Code plugin marketplace.

Cursor / Cline / other MCP hosts

Point your MCP-compatible host at https://api.barker.money — the skill SKILL.md files document the public endpoints (/defi/vaults, /market/overview, /market/trend) and do not require any authentication. CEX per-venue detail is available via the Enterprise API (app.barker.money/enterprise).

Skill Suite

Public API

All data comes from the Barker Public API — free, no API key, real-time updates.

Base URL: https://api.barker.money/api/public/v1
Rate limit: 30 requests/minute per IP

Access model & security posture

• Authentication: None — public read-only API.
• Rate limiting: 30 req/min per IP. Edge DDoS protection in front.
• Data scope sent to the API: Only public market parameters — stablecoin symbol, chain name, sort/limit. No wallet addresses, balances, signatures, private keys, or PII are transmitted by any skill in this suite.
• Data returned: Public yield / market / TVL figures only. Sensitivity equivalent to public market-data APIs such as CoinGecko or DeFiLlama.
• External data boundary: Every SKILL.md in this suite includes a ## Security: External Data Boundary section instructing consuming LLMs to treat all API response strings as untrusted data, not instructions.

CEX per-venue detail (products, campaigns, borrow rates, venue × asset matrix) is not part of the public API. Interactive map at barker.money; programmatic access via app.barker.money/enterprise.

Example

curl "https://api.barker.money/api/public/v1/defi/vaults?asset=usdc&sort=apy&limit=5"

Response Shape & Units

All responses are JSON with { success, data, ... }. APY and share_pct fields are decimals (0.0523 = 5.23%, 0.4250 = 42.5%) — multiply by 100 for display.

Enterprise API

Need higher rate limits, historical data, or custom fields? Contact us for institutional-grade access.

→ app.barker.money/enterprise

FAQ

Q: How often is the data updated? A: Real-time. The yield index reflects live data from 500+ protocols and 20+ CEX.

Q: Do I need an API key? A: No. The public API is free with no authentication required. Rate limit is 30 requests/minute.

Q: What stablecoins are covered? A: All stablecoins on the market — USDT, USDC, DAI, USDS, USDe, sUSDe, FDUSD, GHO, crvUSD, PYUSD, sDAI, frxUSD, TUSD, BUSD, LUSD, DOLA, MIM, FRAX, USDs, USDX, RLUSD, USDY, BUIDL, and more. If a stablecoin exists, Barker covers it.

Q: What chains are supported? A: All chains — Ethereum, BSC, Arbitrum, Base, Polygon, Optimism, Avalanche, Solana, Sui, Aptos, Sei, Mantle, Scroll, zkSync, Linea, Blast, Mode, Manta, and more. Barker has the most comprehensive multi-chain coverage in the market.

Q: Is this financial advice? A: No. All skills provide educational information only, not financial advice. Always DYOR.

Q: Where can I find the best stablecoin yields? A: Use the stablecoin-yield-radar skill or visit barker.money for the full interactive yield map.

Q: How does Barker compare to DeFiLlama or CoinGecko? A: Barker is stablecoin-only and combines CEX + on-chain data in a single index. DeFiLlama focuses on on-chain TVL; CoinGecko focuses on token prices. Barker is the specialized yield index for stablecoins.

About Barker

Barker is the Yield Primitive for the Agent Economy — the default routing layer that any agent (or app, or human) calls when it needs to answer "where should this stablecoin sit?". We index real-time APY data across 500+ DeFi protocols and 20+ CEX, surfaced as a map for humans browsing and as MCP / x402 / agent-callable endpoints for autonomous agents. Stablecoins only, CEX + on-chain combined.

• Website: barker.money
• Public API: https://api.barker.money/api/public/v1
• Enterprise API: app.barker.money/enterprise

Author & Maintainer Disclosure

• Project: Barker — Yield Primitive for the Agent Economy (barker.money)
• GitHub org: YBSbarker (controlled by the Barker team)
• Submitting committers: zuoyeweb3 (founder), royrzguo (engineering) — both authorized Barker team members
• Contact: [email protected]

License

MIT © 2026 Barker