Short answer: Crossmint Agent Wallets is developer infrastructure that lets an app give an agent a scoped signer on a stablecoin smart wallet, across 50+ chains, to pay x402 and MPP endpoints and act onchain. Coinstancy Agentic Bank connects your AI to your own finances through a personal MCP, gives each agent a separate USDC wallet on Base with daily and monthly budgets and approval thresholds, and keeps workflows running with Cloud Run after the AI disconnects.
Key takeaways
- Crossmint Agent Wallets is built into an app with the Crossmint SDK or REST API; it is one of three agent products, next to Agent Cards and Agent Checkout.
- Crossmint covers 50+ chains, including Base, Solana, Polygon and Stellar; Coinstancy Agentic Bank uses USDC on Base.
- Crossmint scopes the agent's signer with a spending limit per token, a recipient allowlist and an expiry; Coinstancy adds transaction, daily and monthly budgets, service allowlists, approval thresholds, simulation by default and receipts.
- Crossmint describes its agent wallets as non-custodial; Coinstancy is custodial, links the agent to your portfolio, transactions, rates and investments, and runs workflows after your AI disconnects.
Crossmint Agent Wallets vs Coinstancy at a Glance
Both products give an AI agent a USDC balance it can spend on its own, and both support x402, the open protocol that lets an agent pay for an API call in stablecoins over HTTP. They differ on who they are built for and what surrounds that wallet. The table compares what each provider publishes, as read on November 11, 2026.
| Recurso | Crossmint Agent Wallets | Coinstancy Agentic Bank |
|---|---|---|
| Built for | Developers adding agent payments to their own app, for agents that act for an end user or fully autonomous backend agents | People who want their AI to read their finances and spend within their rules |
| How the AI connects | Crossmint wallets SDK and REST API in your code; the Crossmint MCP server manages console projects and API keys, not wallet spending | Personal MCP for a compatible AI client, plus Cloud Run for workflows |
| Custódia | Non-custodial per Crossmint: the user, or your backend, holds the root key and the agent gets a delegated signer; Crossmint classes platform-hosted agent wallets with server keys as custodial by your organization | Custodial platform: the agent wallet sits in your Coinstancy account, separate from your main balance; no seed phrase to manage |
| Networks | 50+ chains through one API, including Base, Solana, Polygon and Stellar; the x402 and MPP guides use an EVM wallet on Base | Base |
| Ativos | Stablecoins, USDC in production (USDXM test token in staging); transfers accept any token symbol the chain supports | USDC |
| What the agent can do | x402 and MPP payments, stablecoin transfers, swaps, bridges and any contract call; Agent Cards and Agent Checkout cover online stores | Approved x402 services and transfers between authorized agent wallets and pools |
| Spending limits | Signer scopes per token: a spending limit that can reset on a fixed interval, a recipient allowlist, and an expiry date | Transaction, daily and monthly budgets, service allowlists, prices and approval thresholds per agent |
| Human approval | The user approves the agent signer once with a one-time email code; no prompt per transaction; approval above a threshold not documented | Explicit confirmation before money moves through the MCP; approvals above the threshold you set |
| Safety checks | Permissions enforced onchain at the wallet level; AML screening on cash-outs and on the Custom plan; SOC 2 badge | Simulation on by default, receipts for every action, paid calls can be paused immediately |
| Access to your finances | No: a wallet inside the app that integrates it, not linked to your other accounts | Yes: portfolio, transactions, rates and investments through the personal MCP |
| Automation after the AI disconnects | Runs in your own backend; server agent wallets target autonomous agents and scheduled task runners; no hosted wallet scheduler documented | Cloud Run: scheduled or event-triggered workflows after your AI disconnects |
| Taxas | First 5,000 monthly active wallets free, then $0.01 per wallet; gas and OTP costs billed separately; onramp fees vary | No Agentic Bank fee published on the product page |
| Sign-up | Developer: Crossmint console account and API keys; end user: email code or Google sign-in, KYC inside the card onramp | Coinstancy account with identity verification (KYC by Sumsub) |
How we compared: both products are described on the same points using each provider's own documentation and product page (see Sources). Where a provider does not document a point, we say so instead of guessing. Coinstancy publishes this guide and runs one of the two products compared.
What is Crossmint Agent Wallets?
Crossmint is a blockchain infrastructure platform for developers, with wallets, onramps, offramps, checkout and payment tools for AI agents. Its documentation defines an Agent Wallet as "a non-custodial smart wallet that an agent can spend from within limits the owner sets." Agent Wallets are how agents pay other machines: APIs behind x402 and MPP (Machine Payment Protocol), other agents, and contracts onchain.
It is a building block rather than an app for end users: a developer integrates it, and the developer's users or backend own the wallets. Crossmint does not publish a launch date for Agent Wallets on the pages we read.
User Wallets and Server Agent Wallets
In a user wallet, the end user owns the wallet and adds the agent as a signer with a spend cap, allowed counterparties and a time window. In a server agent wallet, your backend is the root signer, for autonomous agents with no human in the loop, such as scheduled task runners or treasury bots.
Agent Cards and Agent Checkout
For online stores, Crossmint offers separate products: Agent Cards turn a user's saved card into spending limits called order intents, with one-time card numbers on Visa and Mastercard rails, and Agent Checkout buys on websites through one API.
Licenses and Compliance
Crossmint Europe, S.L. is authorised by Spain's CNMV as a crypto-asset service provider under MiCA and by the Bank of Spain as a payment institution under PSD2. Crossmint's US and Canadian entities are registered as money services businesses with FinCEN and FINTRAC. The product page shows a SOC 2 badge.
How Crossmint Agent Wallets Work
For a consumer agent, Crossmint's overview follows four steps. A server agent wallet skips the user steps: your backend creates the wallet and signs every transaction.
Create and Fund the Wallet
The user signs in, for example with an email code or Google in the quickstart, and the Crossmint SDK creates a smart wallet with email or passkey recovery. The user funds it with USDC through the Crossmint card onramp, where KYC happens in a Crossmint-hosted component, or by a direct transfer.
Authorize the Agent
Your backend registers a server signer for the agent, and the user approves it with a one-time email code. Scopes can limit the signer's spending per token, its recipients and its expiry date. The signer secret stays in your backend.
Transact Within Scope
The agent signs with its own key, "with no user prompt per action": it pays x402 or MPP endpoints, sends stablecoins, swaps, bridges or calls a contract. Gas is sponsored by default on supported chains, and anything outside the delegated scope is rejected at the wallet level.
Revoke When Done
The user removes the agent signer with their recovery method, which ends its access immediately. The user keeps the wallet and its funds, and can cash out USDC to a bank account through Crossmint's offramp.
What is Coinstancy Agentic Bank?
Coinstancy Agentic Bank connects AI to financial action in three layers. Instead of a wallet on its own, it ties the agent to your Coinstancy account, with a policy you define and can see.
Personal MCP (Ask)
Connects your portfolio, transactions, rates and investments to a compatible AI client. The AI shows a quote or estimate, and you explicitly confirm each financial action before money moves.
Agent wallet (Authorise)
Each agent gets a separate USDC wallet on Base. You set its budget, allowed services, prices and approval thresholds. Autonomous spending stays within that wallet, never your main account.
Cloud Run (Automate)
Scheduled or event-triggered workflows keep running after your AI disconnects: trigger, check, act, trace. Simulate first, approve when required, inspect receipts and pause anytime. Wallet policy and cost limits still apply.
What can an agent pay for? Approved x402 services and transfers between authorized agent wallets and pools, within the service allowlists, spending limits and approval thresholds you define. Coinstancy is a custodial platform and requires identity verification when you open an account.
Principais Diferenças
The two products overlap on the payment itself, an agent spending USDC on Base through x402. Most differences come from who each one is built for.
Developer Infrastructure vs a Ready-to-Use Product
Crossmint Agent Wallets is an SDK and API that a developer builds into an app, with a Crossmint console account and API keys. Coinstancy Agentic Bank is set up from a Coinstancy account and a compatible AI client, without writing code.
Who Holds the Keys
Crossmint says neither the developer nor Crossmint takes custody of a user wallet: the user holds the root key and the agent gets a delegated one. Coinstancy is custodial: the agent wallet sits in your Coinstancy account, separate from your main balance, with no seed phrase to manage.
Chains and Payment Rails
Crossmint covers 50+ chains across EVM chains, Solana and Stellar, supports both x402 and MPP, and lets agents swap, bridge and call any contract; its Agent Cards and Agent Checkout add card payments at online stores. Coinstancy Agentic Bank uses USDC on Base for approved x402 services and transfers between agent wallets and pools.
A Wallet vs Your Finances
A Crossmint agent wallet lives in the app that integrates it. Coinstancy's personal MCP also gives your AI client access to your portfolio, transactions, rates and investments, and Cloud Run keeps scheduled or event-triggered workflows going after your AI disconnects, under the same wallet policy and cost limits.
Spending Controls Compared
Giving an agent money is mostly a question of limits: how much it can spend, on what, and when a person must step in.
| Control | Crossmint Agent Wallets | Coinstancy Agentic Bank |
|---|---|---|
| Por transação | Not documented as a separate cap | Sim |
| Daily and monthly budgets | Spending limit per token, optionally resetting on a fixed interval | Sim |
| Allowlist | Recipient addresses or wallets | Allowed services |
| Expiry of the agent's access | Yes, an expiry date per signer | Not described |
| Approval above a threshold | Not documented | Sim |
| Simulation before acting | Not documented | On by default |
| Receipts and pause | Revoke the agent signer at any time; receipts not documented | Receipts for every action; paid calls can be paused immediately |
| Where limits are enforced | Onchain, at the wallet level | Not described on the product page |
"Not documented" means we did not find the control in the provider's public documentation on November 11, 2026; it does not prove the control is missing. Check each provider's current documentation before you rely on a control.
Which One Should You Choose?
Choose Crossmint Agent Wallets If
You are a developer adding agent payments to your own product, need chains beyond Base, MPP or onchain actions such as swaps and contract calls, want users to keep non-custodial wallets, or plan to combine wallets with Crossmint's card and checkout products.
Choose Coinstancy Agentic Bank If
You want your AI to work with your own finances without writing code, with daily and monthly budgets, service allowlists, approvals above a threshold, simulation and receipts, and workflows that keep running on schedule after the AI disconnects.
Using Both
Both pay x402 services in USDC on Base, so the protocol does not lock you in. Keep in mind that every extra wallet is another balance and another set of limits to watch.
Perguntas Frequentes
What is Crossmint Agent Wallets?
Is Crossmint Agent Wallets custodial?
Which chains does Crossmint Agent Wallets support?
How much does Crossmint Agent Wallets cost?
What spending limits can I set on a Crossmint agent wallet?
How is Coinstancy Agentic Bank different from Crossmint Agent Wallets?
Fontes e leitura adicional
The facts on this page rest on the documents below, read on November 11, 2026. Features, limits and fees change: check the live documentation before acting on them.
- Crossmint, Agent Wallets product pagecrossmint.com
50+ chains, non-custodial wording, onchain permissions, x402 and MPP, cash-outs, wallet pricing and licenses.
- Crossmint, Pricingcrossmint.com
Free monthly active wallets, price per wallet, gas and OTP billing, AML screening by plan.
- Crossmint Docs, Agent Wallets overviewdocs.crossmint.com
User and server agent wallets, scoped agent access, custody FAQ and revocation.
- Crossmint Docs, How Agents Paydocs.crossmint.com
Agent Cards and Agent Wallets, and the delegation principle behind both.
- Crossmint Docs, Agent Wallets quickstartdocs.crossmint.com
Sign-in, wallet creation, agent authorization and funding steps.
- Crossmint Docs, Authorize the Agentdocs.crossmint.com
Server signer for the agent, approved by the user with an email code.
- Crossmint Docs, Server Agent Walletsdocs.crossmint.com
Backend-owned wallets for autonomous agents with no end user.
- Crossmint Docs, Using the Walletdocs.crossmint.com
Send, swap, bridge and contract calls; gas sponsored by default on supported chains.
- Crossmint Docs, Onramp and Add Fundsdocs.crossmint.com
Buying USDC by card into the wallet, with KYC in a hosted component.
- Crossmint Docs, Remove Agent Accessdocs.crossmint.com
Revoking the agent signer with the user's recovery method.
- Crossmint Docs, x402docs.crossmint.com
Paying x402 endpoints from an EVM wallet on Base holding USDC.
- Crossmint Docs, MPPdocs.crossmint.com
Paying Machine Payment Protocol endpoints from a Crossmint EVM wallet.
- Crossmint Docs, Restrict a Signer with Scopesdocs.crossmint.com
Spending limits per token with reset interval, recipient allowlists and expiry.
- Crossmint Docs, Custody Modelsdocs.crossmint.com
Non-custodial, custodial and hybrid set-ups, including platform-hosted agent wallets.
- Crossmint Docs, Wallets Architecturedocs.crossmint.com
Smart contract wallets on EVM, Solana and Stellar, with permissions enforced onchain.
- Crossmint Docs, Crossmint MCP Serverdocs.crossmint.com
An MCP server that manages console projects, organizations and API keys.
- x402x402.org
The open protocol for paying APIs and services in stablecoins over HTTP.
- Model Context Protocolmodelcontextprotocol.io
The open standard that connects AI clients to tools and data.
- Coinstancy Agentic Bankcoinstancy.com
Personal MCP, agent wallet on Base, budgets, approvals, simulation, receipts and Cloud Run.
Last reviewed: November 2026. External links open in a new tab; Coinstancy is not responsible for their content.
Give Your AI a Wallet
Coinstancy Agentic Bank gives each of your agents a separate USDC wallet on Base, governed by your budgets, allowed services and approval thresholds, and connects your AI to your finances with explicit confirmation before money moves. Coinstancy is custodial, and balances are not FDIC insured.