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@Recon-Fuzz

Recon

Solidity Audits Powered by Stateful Fuzzing

Recon

Recon is a boutique audit firm, that is making Invariant Testing the new default

Check our Open Source repositories for:

  • Create Chimera App: The easiest way to start writing and running Invariant Tests, currently on it's 2nd version
  • Audits: Our public audit Reports, we publish 100% of reports, unless our customers ask us not to

Our team has saved Tens of Millions of live, at risk, funds, and has prevented billions in dollars in damages through our audits

Trusted By

  • Badger
  • Centrifuge
  • Corn
  • Smilee
  • Liquity
  • Solidity Labs
  • Onchainification
  • Balancer DAO
  • Beraborrow
  • Credit Coop

Our customers have over $1 BLN in TVL

Services

  • Audits powered by Invariant Testing
  • Recon Pro: Best in class way to run Echidna, Medusa, Foundry, Halmos and Kontrol in the cloud, with extensive automations, alerts and ongoing fuzzing utilities
  • Invariant Testing Engagements, bootstrap your invariants or maintain them with our extremely experienced engineers
  • Security Audits by Alex The Entreprenerd and other highly qualified, trusted, researchers
  • Ongoing onchain monitoring, automated invariant tests to prevent real world exploits

Trophies

We ran invariant tests against some of the toughest codebase

  • Badger - Crit
  • Centrifuge - Med
  • Tapioca - Highs and Meds
  • Euler - Broken Spec

And many more we are awaiting for permission to publish

Best Practices

We offer multiple starter templates for invariant testing

Feel free to browse around or try our tools at: https://getrecon.xyz/

We can help you build smart contracts, reach out for advisory services

Popular repositories Loading

  1. chimera chimera Public

    Smart Contract Property-Based Testing Framework

    Solidity 146 16

  2. create-chimera-app create-chimera-app Public template

    Solidity Invariant Testing Starter Repo, write Foundry Tests, run Echidna, Medusa and Halmos.

    Solidity 48 18

  3. recon-extension recon-extension Public

    Extension to Scaffold, Run and Debug Invariant Tests with Echidna, Medusa, Halmos and Foundry. Always published under Recon-Fuzz. Recommend building from source.

    TypeScript 33 18

  4. solidity-http solidity-http Public

    Solidity HTTP client

    Solidity 33 6

  5. audits audits Public

    Public Report from Security Reviews, and Invariant Testing Engagements

    16 4

  6. safe-utils safe-utils Public

    Interact with the Safe API from Foundry scripts

    Solidity 15 10

Repositories

Showing 10 of 52 repositories
  • liquity-V2-gov-scfuzzbench Public

    Liquity V2 governance benchmark target for scfuzzbench

    Recon-Fuzz/liquity-V2-gov-scfuzzbench’s past year of commit activity
    Solidity 0 MIT 0 0 1 Updated Feb 22, 2026
  • superform-v2-periphery-scfuzzbench Public

    SCFuzzBench target for Superform v2 periphery (bug baseline + recon harness)

    Recon-Fuzz/superform-v2-periphery-scfuzzbench’s past year of commit activity
    0 0 0 1 Updated Feb 22, 2026
  • scfuzzbench Public

    Benchmark suite for smart-contract fuzzers

    Recon-Fuzz/scfuzzbench’s past year of commit activity
    Python 3 MIT 0 13 0 Updated Feb 22, 2026
  • nerite-scfuzzbench Public

    scfuzzbench target for Nerite

    Recon-Fuzz/nerite-scfuzzbench’s past year of commit activity
    Solidity 0 0 0 1 Updated Feb 22, 2026
  • scfuzzbench-canary Public

    Canary target for scfuzzbench

    Recon-Fuzz/scfuzzbench-canary’s past year of commit activity
    Solidity 0 0 0 0 Updated Feb 21, 2026
  • recon-extension Public

    Extension to Scaffold, Run and Debug Invariant Tests with Echidna, Medusa, Halmos and Foundry. Always published under Recon-Fuzz. Recommend building from source.

    Recon-Fuzz/recon-extension’s past year of commit activity
    TypeScript 33 MIT 18 11 (3 issues need help) 4 Updated Feb 11, 2026
  • create-chimera-app Public template

    Solidity Invariant Testing Starter Repo, write Foundry Tests, run Echidna, Medusa and Halmos.

    Recon-Fuzz/create-chimera-app’s past year of commit activity
    Solidity 48 18 2 (1 issue needs help) 1 Updated Feb 11, 2026
  • setup-helpers Public

    Contracts that simplify invariant suite setup

    Recon-Fuzz/setup-helpers’s past year of commit activity
    Solidity 4 3 2 0 Updated Feb 10, 2026
  • chimera Public

    Smart Contract Property-Based Testing Framework

    Recon-Fuzz/chimera’s past year of commit activity
    Solidity 146 16 0 1 Updated Feb 10, 2026
  • echidna-exp Public Forked from crytic/echidna

    Ethereum smart contract fuzzer - Experimental Fork

    Recon-Fuzz/echidna-exp’s past year of commit activity
    Haskell 0 AGPL-3.0 444 0 0 Updated Feb 2, 2026

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