Tychi MCP

Tychi MCP (@tychilabs/tyi-mcp)

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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](./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:

| Roadmap | What it unlocks | |---------|-----------------| | Automation | Policy-gated agents — recurring sends, triggers, scheduled flows | | Trading | Spot swaps across Arbitrum liquidity — agent quotes, operator confirms | | Lending | Supply on Arbitrum money markets — yield without leaving keystore | | Borrowing | Collateralized borrow — cap-enforced, fully self-custodial |

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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

| Tool | Use when | |------|----------| | tyi_route | First — intent → tool map | | tyi_status | Session start — ready? what's missing? | | tyi_onboard_schema | Field schema before onboard | | tyi_onboard | First setup or LLM-only setup | | tyi_create_wallet | New wallet by name | | tyi_import_wallet | Import mnemonic or privkey (EVM / Solana / Sui) | | tyi_switch_wallet | Change active wallet | | tyi_reset | Wipe ~/.tyi (confirm: true) | | tyi_chat | Balance, send, pay, transfer, policy, limits |

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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](./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](./.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": "",
        "TYCHI_BRAIN_URL": ""
      }
    }
  }
}

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":"","TYCHI_BRAIN_URL":""}}'
openclaw mcp reload

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Onboarding modes

| Mode | Meaning | |------|---------| | fresh | No wallet — run tyi_onboard | | llm_only | Wallet exists, no LLM key — onboard LLM fields only | | ready | OK for tyi_chat |

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

Prefer MCP env for TYI_PASSWORD over chat after onboard.

| Field | Prompt | |-------|--------| | password | Keystore password for ~/.tyi → later TYI_PASSWORD in MCP env | | agent_name | Agent name (default Tychi) | | llm_provider | anthropic \| gemini \| openai \| groq | | llm_api_key | Provider API key (validated, stored encrypted on brain) | | mnemonic | Optional import (fresh only) |

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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

| Symptom | Action | |---------|--------| | not_ready on chat | Run onboard flow | | TYI_PASSWORD env required | Set env after onboard; reload host | | no_llm_key / missing llm_key | tyi_onboard llm_only | | partial install | tyi_reset then fresh onboard | | fetch failed on brain | Set TYCHI_BRAIN_URL explicitly; use HTTPS self-host or beta http://hosted_brain.tychilabs.com |

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Environment

| Variable | Required | Default | |----------|----------|---------| | TYI_PASSWORD | After onboard | — | | TYCHI_BRAIN_URL | Recommended | http://hosted_brain.tychilabs.com (beta; prefer HTTPS override) | | TYI_DATA_DIR | No | ~/.tyi | | KEYSTORE_PASSWORD | Alias | same as TYI_PASSWORD |

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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](./LICENSE). Runtime dependency: @tychilabs/tyi.

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: TychiWallet
• Source: TychiWallet/tyi-mcp
• License: Apache-2.0

Install and usage instructions live in the source repository linked above.