Every onchain move is a risk decision.
Modeling gives you a risk-free preview to validate, test, and optimize how capital behaves onchain.
Our CEO @bendzi discusses risk modeling, simulations, & broader adoption on Builders in Fintech.
Full episode 👇
https://t.co/SlXoW708ix
Tenderly
EVM development and simulation platform supporting transaction debugging and testing across 50+ chains
4.3/ 5
Our score
Very good
Services
Developer tooling
Chains supported
50
Free tier
Yes
What is Tenderly?
Tenderly is a development and simulation platform built for Ethereum Virtual Machine networks. The platform allows engineering teams to simulate transactions, debug smart contracts with visual call traces, set up automated monitoring alerts, and run Virtual TestNets across more than 50 chains.
Team and corporate background
The company was founded in 2018 by Andrej Bencic (CEO), Bogdan Habic (CTO), Miljan Tekic (COO), and Nebojsa Urosevic. Headquartered in San Francisco, California, with primary engineering operations established in Belgrade, Serbia, Tenderly maintains a team of 89 employees. The company has raised $58.6M in venture backing, led by a $40M Series B round in March 2022 from Spark Capital alongside investors including Accel.
Platform architecture and core tools
Tenderly provides an integrated suite spanning pre-deployment testing and live production management. Its Simulator and Virtual Environments allow teams to preview transaction outcomes, model state changes, and validate cross-chain messaging such as CCIP v2.0 flows before mainnet submission. The Console and Debugger provide contract line-by-line tracing, state inspection, and execution overrides. For live monitoring, the system watches on-chain contract events and wallet balances, triggering real-time alerts or serverless Web3 Actions based on configured criteria. Developers can also connect an enterprise-grade Node RPC for EVM querying.
Pricing structure and access
Tenderly provides a free tier for individual development and basic simulation workloads. Advanced capabilities and the Node RPC infrastructure are restricted to paid subscription tiers. Node RPC consumption is billed in Tenderly Units (TUs), where simple read requests such as balance checks cost 1 TU per call and compute-intensive operations like eth_call consume 4 TUs per call.
Risks and operational trade-offs
Using centralized developer infrastructure carries specific platform trade-offs. Relying on external simulation engines and hosted RPC nodes introduces vendor lock-in and dependency on Tenderly's operational uptime for continuous monitoring and alerting pipelines. Furthermore, developer access to live node services remains unavailable on free accounts, requiring teams to upgrade to commercial plans for production RPC endpoints.
Founders
Andrej BencicCo-Founder & CEO
Bogdan HabicCo-Founder & CTO
Miljan TekicCo-Founder & COO
Nebojsa UrosevicCo-Founder
Best for:Smart contract protocol developersDeFi risk engineering teamsInstitutions managing multisig governanceWeb3 security auditors
Pros and cons
Pros
- Supports transaction simulation and debugging across 50+ EVM chains
- Provides Virtual TestNets synced directly with real-time on-chain state
- Raised $58.6M in funding from institutional backers including Spark Capital
- Offers a free tier for essential debugging and simulation tasks
Cons
- Node RPC access requires a paid subscription plan
- Centralized monitoring infrastructure creates operational vendor dependency
- Focused exclusively on EVM networks without non-EVM support
Our review
4.3/5
Very good
Tenderly delivers smart contract simulation and visual debugging across EVM networks, though Node RPC access is restricted exclusively to paid tiers.
Tenderly focuses on full-lifecycle EVM developer tooling, combining transaction simulation, visual contract debugging, continuous monitoring, and dedicated Node RPC infrastructure. Founded in 2018 in San Francisco by Andrej Bencic, Bogdan Habic, Miljan Tekic, and Nebojsa Urosevic, the company has raised $58.6M from institutional backers such as Spark Capital and Accel.
The platform's primary strength lies in its execution tracing and simulation capabilities. Developers can test transaction outcomes against live on-chain state, simulate complex governance actions, and validate cross-chain protocols like CCIP v2.0 inside multichain Virtual TestNets before deploying or executing on mainnet. For production contracts, real-time alerts and automated Web3 Actions let engineering teams flag anomalies or monitor address-level token flows.
However, Tenderly has noticeable trade-offs:
- Node RPC endpoints require a paid plan, leaving free-tier accounts without standard node access.
- RPC billing relies on Tenderly Units (TUs), charging 1 TU for simple reads like eth_getBalance and 4 TUs for compute methods like eth_call.
- Focus remains tightly bound to EVM environments rather than non-EVM ecosystems.
Tenderly suits smart contract developers and protocol operations teams that require deep execution inspection and pre-execution simulation. Projects seeking basic, free RPC access without needing debugging tools should consider standalone RPC providers instead.
Sources (1)
Specs
| Services | Developer tooling |
|---|---|
| Chains supported | 50 · unverified |
| Free tier | Yes |
Not disclosed by the provider: Pricing from, Enterprise SLA, Open source, Token, Uptime SLA, Free tier limits, Server regions.
Data from the provider's website and public sources. Fees and availability change; confirm on the official site before you sign up.
Key features
Transaction simulation
Simulates complex transactions and state overrides across more than 50 EVM chains before submitting them on-chain.
Virtual TestNets
Deploys private development environments synced to real-time network states, supporting CCIP v2.0 message testing.
Visual debugger and tracing
Inspects contract execution down to specific code lines and variable states to isolate execution reverts.
Real-time alerting and monitoring
Monitors smart contract events and net token balance flows across custom address lists with configurable triggers.
Node RPC infrastructure
Supplies managed RPC endpoints metering read requests at 1 TU and compute calls at 4 TUs on paid plans.
Model context protocol server
Enables AI models like Claude to interact directly with simulation tools and debugging environments.
Inside Tenderly
Node RPC
Enterprise-grade Web3 RPC node infrastructure routed with high availability and low latency. Usage is measured in Tenderly Units and is accessible on paid plans.
Simulator & Virtual Environments
Transaction simulation and state modeling that lets developers test complex contracts and cross-chain message flows across Virtual TestNets.
Console & Debugger
A visual debugging interface and contract explorer that provides detailed execution traces, state changes, and verification for on-chain contracts.
Monitor & Alerting
Real-time production monitoring and alerting that tracks address-level token movements and triggers automated Web3 Actions.
Tenderly MCP Server
A Model Context Protocol server that connects AI assistants like Claude directly to Tenderly simulation tools and developer infrastructure.
Tenderly screenshots
What users say about Tenderly
There is not enough user feedback to determine specific goods or bads for Tenderly. Available mentions consist only of domain registration details and general hackathon announcements.
Based on 2 Reddit posts and comments from the last 12 months, checked Oct 20, 2026. These are posts by users on other sites, not reviews submitted on CryptoReview.
User reviews
No user reviews yet. Have you used Tenderly? Share your experience below.
Funding and investors
$58.6MTotal raised
1Round
1Investor
-
Series B Mar 2022 $40MSource
FAQ
Who founded Tenderly?
Tenderly was founded in 2018 by Andrej Bencic, Bogdan Habic, Miljan Tekic, and Nebojsa Urosevic. The company is headquartered in San Francisco with development roots in Belgrade, Serbia.
Does Tenderly offer a free tier?
Yes, Tenderly offers a free tier for development tools and contract monitoring. However, access to its Node RPC infrastructure requires a paid subscription.
How is Tenderly Node RPC priced?
Node RPC consumption is measured in Tenderly Units (TUs) based on the method called. Standard read methods like eth_getBalance cost 1 TU per request, while compute calls like eth_call cost 4 TUs per request.
Does Tenderly have a native token?
No, Tenderly does not have a native cryptocurrency token. It operates purely as a software-as-a-service developer platform funded by venture capital.
Which networks does Tenderly support?
Tenderly supports major EVM networks and rollups, offering simulation and debugging tools across more than 50 chains.
What is Tenderly Virtual TestNets?
Virtual TestNets are isolated testing environments that mirror live on-chain state without incurring mainnet gas costs. They allow developers to simulate contract calls, cross-chain bridge flows, and complex transaction batches in private workspaces.
Latest from Tenderly on X
Simulate → inspect → adjust → re-simulate
Run the entire loop in Virtual Environments to quickly inspect and troubleshoot issues.
Re-simulate with the same parameters on the latest or pending block in one click.
Troubleshoot with ease: 👇
https://t.co/nYS4jIIU0w
Run the entire loop in Virtual Environments to quickly inspect and troubleshoot issues.
Re-simulate with the same parameters on the latest or pending block in one click.
Troubleshoot with ease: 👇
https://t.co/nYS4jIIU0w
Analyze oracle health, update cadence, & price history for @chainlink and @ChronicleLabs.
→ See feed parameters at a glance
→ Examine oracle rounds in detail
→ Analyze feed contracts
→ Take the next steps right away
Track oracle health with ease:
https://t.co/1qkShPVNAq
→ See feed parameters at a glance
→ Examine oracle rounds in detail
→ Analyze feed contracts
→ Take the next steps right away
Track oracle health with ease:
https://t.co/1qkShPVNAq
When managing vaults at institutional scale, you need to ensure:
→ Production readiness
→ Operational integrity
→ Ongoing risk mitigation
Risk modeling enables this across the vault lifecycle. https://t.co/8MA1VCDlr0
→ Production readiness
→ Operational integrity
→ Ongoing risk mitigation
Risk modeling enables this across the vault lifecycle. https://t.co/8MA1VCDlr0
Offering automated security solutions, @Kerberus simulates every tx before it reaches the user.
To preview tx outcomes, the team runs ~2M simulations across 50+ chains on Tenderly monthly.
Learn how Kerberus uses simulations to ensure user protection: 🧵
https://t.co/4PJ72nKulF
To preview tx outcomes, the team runs ~2M simulations across 50+ chains on Tenderly monthly.
Learn how Kerberus uses simulations to ensure user protection: 🧵
https://t.co/4PJ72nKulF
Recent public posts from @TenderlyApp, shown as published. Not reviewed or endorsed by CryptoReview.
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