“One of the pioneering firms in web3 solutions, digital assets and tokenization, recognized for its innovation and solid reputation across Spain and Latin America.”
Jorge CorredorLawyer, Rincón Cuéllar & Asociados
Smart contract automation. Every run, on the record.
We automate the recurring operations of your smart contracts, such as payments, settlements or data updates, triggered by time, events or conditions, with controls and an auditable history.
They trust Metlabs with their blockchain projects
Automation
Why does a smart contract need automation?
Because a smart contract never runs on its own. Every state change needs a transaction someone signs and pays for, even after the condition is met. Automation watches that condition, checks it still holds and sends the call, with gas limits, protected keys and a record of every execution.
12 s
between blocks on the Ethereum network
ethereum.org · 2026
12.5%
max base fee increase per block
ethereum.org · 2026
43.8%
of value stolen in 2024, via compromised keys
Chainalysis · 2024
What's included
What our smart contract automation includes.
Automating means giving a process permission to sign on your behalf. Every piece narrows that permission, monitors it and records what it did.
Triggers
Runs on a schedule, on a contract event or when an external data point crosses a threshold.
Pre-flight checks
Every call is simulated and its conditions revalidated right before the transaction is signed.
Key management
Executor keys in a KMS, with a role that can only automate and has no other permission.
Gas control
Fee caps, retries and replacement of stuck transactions so nothing is left half done.
Alerts and monitoring
Alerts when a run fails, runs late or the executor's gas balance drops below its minimum.
Auditable history
A log of every run with its reason, its transaction and its result, ready for an audit.
Architecture decision
Who triggers your smart contract?
This decision sets who you depend on when it is time to execute. You can delegate to an external automation network, run your own backend with a relayer or design the contract so anyone can trigger it.
| Criterion | Automation network | Backend with relayer | Open execution |
|---|---|---|---|
| Who sends the transaction | Nodes of an external service, such as Chainlink Automation. | Your server, with a key dedicated to the executor. | Any account, or the next user who interacts. |
| What you depend on | The external service's uptime and fees. | Your infrastructure and the custody of its key. | Someone having an incentive to call on time. |
| Off-chain logic | Whatever the service and its integrations support. | Anything you need, including your APIs and ERP. | None. Everything is checked on-chain. |
| Typical fit | Periodic tasks and simple conditions in the network. | Flows that connect the network to internal systems. | Liquidations and expiries with their own incentive. |
They are often combined. The executor triggers and the contract revalidates the condition, so an executor failure never breaks a rule.
Methodology
How we automate your smart contracts.
Four phases, each with a concrete deliverable. We define what triggers every run and what happens when it fails before writing any code.
A document with each condition, who watches it, which call it sends and what happens if it fails or runs late.
Where every piece lives, from the API to your ERP to the custody of the executor's keys.
Contracts with a dedicated role for the executor and the service that watches each condition, in a pull request.
Edge-case fuzzing with Foundry, Slither, a testnet rehearsal and monitoring from day one.
Tools to execute without surprises.
Solidity contracts, automation services we integrate, a Node.js backend with viem and testing with Foundry.
- Solidity
The smart contract language for verifiable rules on EVM networks.
- Chainlink
Oracles for external data, randomness and cross-chain messaging for contracts.
- Foundry
Solidity tests, invariant fuzzing and command-line tooling for EVM networks.
- Viem
A TypeScript client for EVM networks, modular and strictly typed by design.
- Node.js
A JavaScript runtime for backends, indexers and server-side Web3 services.
- Arbitrum
Arbitrum One: EVM execution and layer 2 tooling on top of Ethereum.
Use cases
Where we apply blockchain automation.
Automation pays off when a rule repeats, has a date or depends on a data point, and nobody should have to remember to run it.
Recurring collections and payouts
They run on their due date, with every settlement recorded on-chain and ready to reconcile.
Blockchain for Banking & Finance
Payment on delivery
Supplier payments released when the shipment is confirmed at destination, with no manual matching.
Blockchain for Supply Chain & Logistics
Energy settlement
Balances between producers and consumers calculated and settled at the close of each period.
Blockchain for Energy & Sustainability
Rental income distribution
Rental income from a tokenized property split among holders on every agreed payment date.
Blockchain for Real Estate
Reviews
What do our clients think of Metlabs?
“We structured the tokenization of real estate projects with them, and I value the team's ability to understand our corporate needs and genuinely solve them.”
Joan MejíaManager, GLOBYNE
“They advised us on the feasibility of tokenizing real estate assets in Uruguay with direct, cordial treatment. A professional team, responsive and always available.”
Álvaro Silva SantamaríaCEO, Sp Inmuebles
“Great professionals at structuring tokenized projects, with technical command and attention to detail that inspire full confidence at every stage of the work.”
Francisco BetancourtVerified Google review
“As a blockchain lawyer, I value their experience and professionalism in consulting and executing tokenization projects. Technology partners you can fully trust.”
Vanessa RivasBlockchain lawyer, El Salvador
“Great professionals, very attentive to their clients and always mindful of every detail. Working with their team has been a genuine pleasure from start to finish.”
CriptorentVerified Google review
“A very professional yet approachable company that empathizes with your doubts and needs. Highly recommended for entrepreneurs with a tokenization project.”
Javier EspasaTokenization entrepreneur
“Exceptional in every sense. From legal support I value their rigor and transparency: working with Metlabs means professionalism, innovation and security.”
Pedro A. Agúndez MéndezGoogle Local Guide
“Excellent service across blockchain development, asset tokenization and consulting. A very professional team that I recommend wholeheartedly, without reservation.”
José Luis DíazVerified Google review
“I have worked with them on several projects and they are very professional. A guarantee that everything turns out perfectly. Without a doubt, 100% recommended.”
Ignacio Fernández JiménezVerified Google review
“One of the pioneering firms in web3 solutions, digital assets and tokenization, recognized for its innovation and solid reputation across Spain and Latin America.”
Jorge CorredorLawyer, Rincón Cuéllar & Asociados
“Great professionals at structuring tokenized projects, with technical command and attention to detail that inspire full confidence at every stage of the work.”
Francisco BetancourtVerified Google review
“A very professional yet approachable company that empathizes with your doubts and needs. Highly recommended for entrepreneurs with a tokenization project.”
Javier EspasaTokenization entrepreneur
“I have worked with them on several projects and they are very professional. A guarantee that everything turns out perfectly. Without a doubt, 100% recommended.”
Ignacio Fernández JiménezVerified Google review
“We structured the tokenization of real estate projects with them, and I value the team's ability to understand our corporate needs and genuinely solve them.”
Joan MejíaManager, GLOBYNE
“As a blockchain lawyer, I value their experience and professionalism in consulting and executing tokenization projects. Technology partners you can fully trust.”
Vanessa RivasBlockchain lawyer, El Salvador
“Exceptional in every sense. From legal support I value their rigor and transparency: working with Metlabs means professionalism, innovation and security.”
Pedro A. Agúndez MéndezGoogle Local Guide
“They advised us on the feasibility of tokenizing real estate assets in Uruguay with direct, cordial treatment. A professional team, responsive and always available.”
Álvaro Silva SantamaríaCEO, Sp Inmuebles
“Great professionals, very attentive to their clients and always mindful of every detail. Working with their team has been a genuine pleasure from start to finish.”
CriptorentVerified Google review
“Excellent service across blockchain development, asset tokenization and consulting. A very professional team that I recommend wholeheartedly, without reservation.”
José Luis DíazVerified Google review
Team
In-house blockchain development team
Metlabs is a blockchain development company based in A Coruña, Spain. An in-house team covers every part of the project, from product and engineering to infrastructure and legal fit. The people who design your architecture write, test and deploy the code.
Meet the team- Projects in production
- +30
- In tokenized assets
- +$40M
- In‑house development
- 100%
Isaac González
Head of Innovation
Carlos Peña
Full Stack Engineer
Pablo Castro
DevOps Engineer
Helena Ramos
Product Designer
Javier Yáñez
Legal
Security
Security in on-chain automation
Every delivery goes through the same checklist before it reaches mainnet. What changes between projects is the depth of each control, because an MVP does not carry the same risk as a contract that holds third-party funds.
Before mainnet
- Roles and permissions defined for every critical function
- Unit and invariant tests, and fuzzing on the logic that moves value
- Static analysis and peer review of every change
- Multisig and timelock on administration when the risk justifies it
- Custody and rotation of the deployment keys agreed
- External audit when the value at risk requires it
We work with leading audit firms
Blockchain development
More blockchain development services.
Connect your operations
Represent assets and rights
Blog
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Let's build the rails for your product.
Tell us which process you want to automate and what happens today when it fails. We start with the trigger map.
