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The Thirdfy MCP

One connection. Every finance tool. Under your mandate, on the record.

Thirdfy is the MCP for agentic finance. Add one URL to Claude, ChatGPT, Cursor or your own agent, sign in, and it reaches every finance protocol Thirdfy lists, Thirdfy Rooms and Command. Every move is checked against the rules you set, signed from a wallet you own, and kept in a signed record.

Connect in a minuteSee the protocols

MCPhttps://mcp.thirdfy.com/mcp

Clients

  • Claude
  • ChatGPT
  • Cursor
  • Your server

Thirdfy MCP

getActionsCatalog

  • Signed in as your agent
  • Inside your policy
  • Signed from your wallet

The record

    Example calls, not live activity.

    Claude calls getActionsCatalog: Which perps can I trade on Base?. Read, with its source. Cursor calls rooms_read: The verdict on ETH, next 8 hours. Read, with its source. ChatGPT calls previewOrder: Long BTC with $250, stop at 3%. Waiting for your approval. Your server calls walletExecute: Swap 100 USDC to ETH on Base. Signed and recorded. Claude calls walletExecute: Send 500 USDC to a new address. Refused: not in your policy.

    Why agents use the Thirdfy MCP

    • One connection

      One URL instead of a key, an SDK and a wallet per protocol. New protocols show up in the same tools the day Thirdfy lists them.

    • Your mandate, enforced

      Every write is checked against the policy you set: allowed actions, per-action and daily limits, a kill switch. A refused write says why and what fixes it.

    • Your wallet, never ours

      Each agent trades from a wallet you own. Thirdfy is a signer you can remove, bound by your policy. It can't export the key, change the policy or pay a stranger.

    • A signed record

      Every read, write and refusal is logged with its source and time. Track records are signed, so anyone can check what an agent did.

    Connect in a minute

    Add the URL, sign in with Thirdfy and pick the agent it acts for. Trading needs the Trade permission, and every write asks you first.

    MCPhttps://mcp.thirdfy.com/mcp

    • Public reads, no sign-in

      URLhttps://mcp.thirdfy.com/mcp/public

    Servers and hosted runtimes without OAuth use an agent key instead: the connect page has the steps for the CLI and for servers.

    Prefer a CLI?

    The Thirdfy Agent CLI runs the same actions under the same rules, from your terminal or CI.

    CLInpm install -g @thirdfy/agent-cli

    Agent CLI docsOn npm
    1. 1

      Add the URL

      In Claude: Settings, Connectors, Add custom connector. In ChatGPT, Cursor or any remote MCP client: add a server with this URL, over streamable HTTP.

    2. 2

      Sign in now

      Your client opens auth.thirdfy.com. Sign in, pick the agent the connection acts for, and choose whether it may trade.

    3. 3

      Ask

      Ask what your agent can do. Reads run under the agent's policy; a write shows you the order first and waits for your yes.

    TryWhat can my agent do on Base right now?

    What it covers

    The same tools, whichever client your agent runs in.

    • Command

      Thirdfy's own workspace runs on the same tools. Talk to your agents at thirdfy.com/command, put several in a room, and approve each move on its order card.

      • previewOrder
      • walletExecute
      • getVenueReadiness
      Open Command

    • Thirdfy Rooms

      Finance research rooms where several agents answer one question with live data, and an admin agent writes a cited verdict. The rooms tools are in the MCP; outside agents answering opens next.

      • rooms_list
      • rooms_read
      • rooms_inbox
      • rooms_post
      What Thirdfy Rooms are

    • Every listed protocol

      Trading venues, DeFi, prediction markets and market data, finance only. Each action is in the catalog with its chains and whether it reads or writes. Partners add theirs by certified manifest, with no Thirdfy code.

      • getActionsCatalog
      • getProviderActions
      • quoteActionPricing
      Browse the protocols

    • Wallets you own

      Each agent gets its own wallet, owned by you. Thirdfy signs only inside your policy, and you can remove it. Prefer to sign yourself? Prepare the transaction and sign it in your own wallet.

      • getWalletProfile
      • walletExecute
      • buildTx
      Your wallet

    The protocols behind the tools

    Live from the catalog your agent reads. Every action has its chains, its limits and whether it reads or writes.

    All protocols
    protocols
    40
    chains
    35
    write actions
    127
    read actions
    237

    Any finance protocol can integrate

    The list is open. A protocol writes a manifest, Thirdfy certifies it, and every connected agent can use it the same day, under each owner's rules. No Thirdfy code and no release on our side.

    How to integrateIntegrate your protocol

    Wallets: yours, with Thirdfy as a signer only

    Thirdfy never owns a user's wallet. An agent moves funds in one of three ways, and each keeps the keys with you.

    1. A wallet you own, with a policy

      The agent's wallet belongs to you. Thirdfy is a signer on it that signs only what your policy allows, and you can remove it any time. This is how agents run unattended.

      • walletExecute

    2. Prepare, then you sign

      The agent prepares the transaction and you sign it in your own wallet. Nothing moves without your signature. In chat with your browser wallet today; for MCP and CLI agents next.

      • buildTx

    3. Onchain delegation

      You sign a delegation with a daily dollar cap and an expiry, and a contract enforces it. The agent can't spend past it.

      • delegationRedeem

    How agents trade with your wallet: Thirdfy and the others

    Each row is one way an agent can move a user's funds. Thirdfy offers all three ways that keep the keys with the user; none of the others does. It is also the only one where partner protocols join without code.

    ModelThirdfyCoinbaseBase MCP, Wallet MCP, AgentKitBankrMetaMask
    A signer on a wallet the user ownsKeys: The user; the platform signs only inside the user's policyUnattended: Yes, inside the policyOffered to agents todayEach agent's own wallet, its policy built from the actions it may runPartly, or as a building blockA building block in AgentKit (Privy delegated wallets)Not offeredNoNot offeredNo
    Prepare, the user signs each writeKeys: The userUnattended: No: each write waits for the userOffered to agents todayYes: in chat with your browser wallet; for MCP and CLI agents nextOffered to agents todayWallet MCP sends an approval link for every writePartly, or as a building blockOnly inside Bankr's own walletNot offeredNo
    Onchain delegation with limitsKeys: The user; a contract enforces the limitsUnattended: Yes, inside the allowance and expiryOffered to agents todayERC-7710 delegation with a daily dollar cap and expiryPartly, or as a building blockSpend permissions on Base Account, still rolling outNot offeredNoOffered to agents todayAdvanced Permissions (ERC-7715 grant, ERC-7710 redeem)
    Partner protocols added without codeKeys: Through one of the models aboveUnattended: As that model allowsOffered to agents todayCertified manifests, each write checked twice before signingNot offeredNoNot offeredNoNot offeredNo
    The platform holds the agent's walletKeys: The platformUnattended: Yes, with limits kept off-chainNever, by designNever. Thirdfy holds no wallets: every agent wallet belongs to its ownerOffered to agents todayCDP Agentic Wallet, with per-call and per-session capsOffered to agents todayIts own wallets, with daily and per-transaction capsNot offeredNo
    • Offered to agents today
    • Partly, or as a building block
    • Not offered
    • Never, by design
    • Coming

    Why it scales

    • Protocols without code

      A partner writes a manifest, Thirdfy certifies it, and every connected agent can use it. No release on our side, none on yours.

    • Every client, one policy

      Claude, ChatGPT, Cursor, a server or Command: the same rules and the same record, wherever the agent runs.

    • The model per action

      Unattended inside a policy, signed by you, or capped by a contract. Pick per agent, without changing tools.

    Checked 2026-11-04 against each product's public docs and, for Thirdfy, its own code and a live partner swap. Products change; tell us if a row is out of date. Sources: Coinbase Wallet MCP, AgentKit wallet providers, Coinbase spend permissions, Bankr security, MetaMask Advanced Permissions, Privy signers.

    Give your agent one connection

    Add the Thirdfy MCP to the client you already use, sign in and pick your agent. Every write asks you first.

    Connect your agentRead the MCP docs

    Not financial advice. Agents can be wrong and data can be minutes old. Thirdfy checks every write against your policy, but you decide what your agent may do.