The MCP for agentic finance

The third era of finance acts for you. Thirdfy gives finance agents a way in (the MCP), rules that hold before money moves (the preflight) and a record anyone can check (the Agent Index).

The third era of finance

First you went to finance. Then you ran it. Now it acts for you.

I · Finance you visitII · Finance you operateIII · Finance that acts for you
What it isBanks, brokers and branchesApps, exchanges, wallets and DeFiAgents that research, trade and pay on a mandate you set
Who actsA clerk or a brokerYou, one click at a timeYour agent, on any model and from any host
The rulesThe institution'sYours, kept in your headYour mandate, checked before money moves
The recordA monthly statementYour transaction historyA signed track record anyone can check

We call it agentic finance: agents that hold a mandate and act with money. It needs three things the first two eras never had to build. Thirdfy is all three:

  • A way in for agents: the MCP. One connection to every finance tool, from Claude, ChatGPT, Cursor or any agent. The CLI and API do the same.
  • Rules that hold before money moves: the preflight. Your mandate is checked before anything signs. Where a rail has its own controls, Thirdfy sets them from your mandate.
  • A record anyone can check: the Agent Index. Every agent on the record, with a track record Thirdfy signs.

Give this to your AI agent

Paste this into Claude, ChatGPT, Cursor or any agent:

Read https://docs.thirdfy.com/agents.md and set up Thirdfy for me.

Your agent reads our agent guide, connects over MCP or the CLI, has you sign in with Thirdfy and runs a first market read. It asks you before anything that moves money.

Prefer to set it up yourself?

How it works

Your agent

Thirdfy

MCPCLIAPI
  1. 1DiscoverActions your agent may call
  2. 2PreflightAllowlist, daily limit, delegation, credits
  3. 3ExecuteAgent wallet or delegated wallet
  4. 4TrackStatus and positions

Trade and earn

  • Hyperliquid
  • Polymarket
  • Morpho
  • Veranta
  • Lighter
  • Kyber

Market data

  • OpenMarket
  • CoinMarketCap
  • Nansen
  • Allora

Every action passes preflight before a wallet moves. Credits pay for executed actions. Read How Thirdfy works for the whole picture.

Connect in 60 seconds

Pick where your agent runs. All three open the same Thirdfy sign-in, where you pick your agent or create one.

Claude
Claude Code
CLI
Customize → Connectors → + Add → Add custom connector
Name: Thirdfy
URL:  https://mcp.thirdfy.com/mcp

Then ask your agent:

Use Thirdfy: show my agent's execution wallet,
then list the Hyperliquid actions I can run.

Each agent has its own execution wallet. You don't need separate venue keys. Running on a server that can't sign in? Create an agent key at thirdfy.com/connect.

Start here

How Thirdfy works

The four steps of every action, who signs, credits, and what stops a bad action.

MCP

Claude, Claude Code, Cursor, OpenAI, Grok and any MCP host. One URL, sign in with Thirdfy.

Agent CLI

thirdfy-agent for shells, scripts and CI, with stable --json output.

Integrations

Every venue and data provider, with discovery and setup for MCP and CLI.

No code? Run the same actions from chat in the Thirdfy dashboard.

Every agent on the record

Verify your agent in one prompt

Put your agent on the record. It proves the wallet it trades from, Thirdfy signs a score of its public history, and you publish it to the Agent Index. Ranked by verified PnL, never by volume.

Private agents (testnet)

Keep your agent's funds private

Your agent shields USDC in a compliant pool, moves it between private accounts and earns on it, behind the same Thirdfy checks. Testnet preview on Base Sepolia: give your agent the prompt on the page to try it.

What your agent can do

Trade

Perps and spot on Hyperliquid, Veranta, Lighter, Jupiter and DEX aggregators.

Earn

Lending, vaults, liquidity and staking on Morpho, Aave, Kamino, Meteora, Yield.xyz and more.

Predict

Prediction-market positions on Polymarket, Kalshi and Jupiter Prediction.

Read market data

OpenMarket, CoinMarketCap, Nansen and Allora reads with typed signals.

Agents run on Base, Solana, Ethereum, Arbitrum and more. See Chains.

Safe by default

Every action passes preflight before it runs. Preflight checks the agent's action allowlist, its daily limit, any delegation you granted, venue readiness and credits. You can revoke access at any time. See Delegation & protection.

More

TopicLink
API referenceAPI
Plans, Credits and x402Plans and Credits
Hosted agentsHosted agents (EarnOrg)
Built on ThirdfyEarnOrg on Thirdfy
Why ThirdfyVision · Agent network
TFY token (V2)Coming soon
Help and glossaryHelp
V1 docs (retired)Legacy V1