Tyi MCP Server

Tychi MCP (@tychilabs/tyi-mcp)

Give your AI agent a wallet — onboard, hold funds, send, and pay under policy.

Agent-native MCP server (stdio) for Cursor and other hosts. Nine tools: routing (tyi_route), readiness (tyi_status), onboarding, fast wallet lifecycle (create / import / switch), and tyi_chat for balances, sends, and policy-gated payments on Arbitrum One. Private keys encrypted in ~/.tyi on the operator machine; signing never leaves the device. Hosted Tychi brain parses intent and runs the LLM — configure TYCHI_BRAIN_URL (HTTPS recommended; see SECURITY.md).

Agents → @tychilabs/tyi-mcp@1.0.0-beta.8 · Humans → @tychilabs/tyi

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What it does

• Agent routing — tyi_route maps intent → correct tool (avoids slow misuse of tyi_chat)
• Readiness gate — tyi_status checks mode before any wallet action
• Onboarding — tyi_onboard + tyi_onboard_schema for first-time setup (password, LLM provider, API key)
• Wallet lifecycle — tyi_create_wallet, tyi_import_wallet, tyi_switch_wallet (fast, no brain loop)
• Agent chat — tyi_chat for balances, sends, transfers, payments, policy, limits, history
• Multi-wallet — create, import, switch active wallet from one keystore
• Policy caps — spend limits enforced before signing
• Local signing — private keys in memory on operator machine only
• Gasless routing — UGF payment rails for cross-chain gas settlement
• Audit log — local activity trail in ~/.tyi
• Reset — tyi_reset wipes local data when operator confirms

Beta ships on Arbitrum One (chain id 42161) — EVM balances, sends, and UGF gasless payments. More chains in registry; Solana/Sui import supported.

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Arbitrum One

Onchain agent wallet on Arbitrum One — self-custody, local signing, UGF gas routing today:

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Agent flow (mandatory)

tyi_route → tyi_status
  → direct tool (onboard / create / import / switch / reset)   ← FAST
  → tyi_chat (balance / send / pay / policy only)              ← SLOW

Never call tyi_chat when tyi_status.ready is false.

Import seed or private key → tyi_import_wallet only (never via tyi_chat).

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Tools

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Install

Pin the release (do not use floating @beta in production):

npx @tychilabs/tyi-mcp@1.0.0-beta.8
npx @tychilabs/tyi-mcp@1.0.0-beta.8 --tools

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Security

See SECURITY.md — trust model, brain transport (HTTP beta endpoint), sensitive tools, supply-chain pinning. No install scripts.

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MCP host config

Repo includes .mcp.json (Open Plugins) for Cursor Directory. Set TYI_PASSWORD and TYCHI_BRAIN_URL in host env (HTTPS brain recommended).

{
  "mcpServers": {
    "tychi": {
      "command": "npx",
      "args": ["@tychilabs/tyi-mcp@1.0.0-beta.8"],
      "env": {
        "TYI_PASSWORD": "<from tyi_onboard>",
        "TYCHI_BRAIN_URL": "<https brain URL — required>"
      }
    }
  }
}

Beta default if unset in code: http://hosted_brain.tychilabs.com — use HTTPS self-host or trusted network only.

OpenClaw:

openclaw mcp set tychi '{"command":"npx","args":["@tychilabs/tyi-mcp@1.0.0-beta.8"],"env":{"TYI_PASSWORD":"<password>","TYCHI_BRAIN_URL":"<https brain URL>"}}'
openclaw mcp reload

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Onboarding modes

Operator provides (never invent): keystore password, LLM provider + API key, optional mnemonic for import.

Prefer MCP env for TYI_PASSWORD over chat after onboard.

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Remove integration + data

1. tyi_reset with { "confirm": true } — wipes ~/.tyi
2. Remove TYI_PASSWORD from MCP env
3. OpenClaw: openclaw mcp unset tychi then openclaw mcp reload

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Errors

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Environment

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Links

• Website: https://tychilabs.com
• npm: https://www.npmjs.com/package/@tychilabs/tyi-mcp
• GitHub: https://github.com/TychiWallet/tyi-mcp
• Human CLI: https://www.npmjs.com/package/@tychilabs/tyi

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License

Apache License 2.0 — see LICENSE. Runtime dependency: @tychilabs/tyi.