Self-custody
Keys live in a self-custody wallet at ~/.tyi on the agent device, never in the LLM or on Tychi servers.
Built-in capabilities
Hold on device. Spend within policy. Sign locally.
Policy-gated spend
Read-only or execute mode, per-tx caps, and checks on every tyi_run.
x402 + ERC-8004
Agentic HTTP payments and on-chain identity, signed locally before broadcast.
▪Why now
Agent finance has a 3-way problem
Human wallets and platform custody were not built for autonomous agents. Tychi Agent Finance fixes all three.
$ ls ~/.tyi/
vault.enc
policy.json
session.json
$ tyi_onboard
✓ local vault unlocked
✓ keys stay on device
01
Agents can't hold money on their own device.
They borrow your keys, run on platform custody, or have no wallet at all, so autonomy stops at the keyboard.
Tychi self-custody
Encrypted vault at ~/.tyi on the agent's machine. Private keys never reach the LLM, MCP host, or Tychi servers.
$ tyi_run "send 0.05 USDC"
→ policy: daily_cap OK
→ policy: execute_mode OK
→ policy: audit_log write
pending local sign...
02
Agents can't spend within rules you set.
No per-tx caps, no read-only mode, no audit trail. Operators can't safely let agents move real money.
Policy-gated spend
Daily caps, execute vs read-only, and policy checks on every tyi_run before anything signs or broadcasts.
$ tyi_discover
chains · llm · money_tools
$ tyi_onboard
✓ wallet ready
$ tyi_run
balance · send · x402
03
Agents can't plug into MCP hosts out of the box.
Every Cursor, OpenClaw, or Claude Desktop setup needs custom wallet glue before an agent can pay or act on-chain.
Agent Finance MCP
Stdio MCP for OpenClaw, Claude Desktop, Cursor, and Codex. Onboard, balance, send, and x402 in one install. Pairs with UGF for agent gas and execution.
npm install -g @tychilabs/agent-finance-mcp[ 03 / 05 ] · CHOOSE YOUR PATH
MCP or SDK
Same custody model. Pick the surface that matches how you ship agents.
MCP hosts. For Cursor, Claude Desktop, OpenClaw, Hermes: stdio MCP with SKILL.md onboarding.
@tychilabs/agent-finance-mcp
npm install -g @tychilabs/agent-finance-mcptyi_discover · tyi_onboard · tyi_run · SKILL.md
Get startedTypeScript apps. Embed custody, policy, and signing directly in your Node.js agent codebase.
@tychilabs/agent-finance SDK
npm install @tychilabs/agent-financeVault API · x402 · ERC-8004 · Apache-2.0
View SDKComparison
Full stack agent finance, not a point tool.
How agent wallet products compare on custody, policy, identity, and settlement. Select a dimension to compare stack depth.
Identity / reputation
TychiYesNo
FAQ
Agent Finance MCP
Self-custody, policy, x402, ERC-8004, and MCP setup. Read why agents need self-custody, how AI agents on UGF run transactions, and agent finance on Tychi Labs.
Tychi Agent Finance is the open-source client stack for Tychi, where AI agents hold money under their own custody, spend within policy you define, and sign transactions locally on their device. Humans set the rules. Agents move at machine speed. Ships as @tychilabs/agent-finance (SDK) and @tychilabs/agent-finance-mcp (MCP).
Install @tychilabs/agent-finance-mcp for MCP hosts, or @tychilabs/agent-finance for code. Add tychi-agent-finance to your MCP host config with TYI_* env vars, then tyi_discover → tyi_onboard → tyi_run. Keys stay on the agent's device.
MCP if you use Cursor, Claude Desktop, OpenClaw, or Hermes. SDK if you build your own agent app in TypeScript.
@tychilabs/agent-finance-mcp connects MCP hosts (Cursor, Claude Desktop, OpenClaw, Hermes, and others) to Tychi with self-custody wallets, policy on every spend, and local signing for on-chain money and x402.
Yes. Any MCP host that supports stdio servers can run @tychilabs/agent-finance-mcp. Hermes and other MCP clients work the same way.
Yes. Keys live in a local agent vault (~/.tyi) on the machine running the MCP server. The LLM provider never receives your EVM private key. You configure vault and session secrets in MCP host env, not in chat.
x402 is the built-in agentic payment gateway for HTTP APIs and agent services without human checkout or platform custody of spend keys. Tychi prepares x402 payments within your agent's policy; the agent signs locally via tyi_resume_x402 after tyi_run returns pending: "x402".
ERC-8004 is agentic on-chain identity: register the agent on-chain (profile, capabilities, trust signals) alongside its wallet. This MCP exposes it through tyi_onboard and agent tasks via tyi_run.
Yes, within policy limits you set. x402 payments are signed locally like on-chain transactions. The agent does not hand custody to the API vendor.
On the agent's machine: local encrypted vault (~/.tyi by default). Never on Tychi's servers. Never in the LLM.
Whatever Tychi exposes for your agent. Check the live catalog when connected, not any hardcoded list. Call tyi_discover after connect.
Start with read-only policy until you trust agent behavior. Tighten maxPerTxUsd and allowed actions before enabling execute mode on real funds.
Yes. Client packages are Apache-2.0. Tychi API orchestration runs at agents.tychilabs.com.
Self-custody wallets. Policy-gated spend. Local signing. Banking for AI agents.