Skip to content
@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.
  • Recon Fuzzer: An Echidna clone written in Rust, 10 times faster.
  • Recon Magic Framework: An AI orchestration framework with prompts and custom tools to automate invariant testing, 40 times faster than doing it by hand.
  • Recon Extension: The most popular invariant testing tool for Solidity, used by over 1.3k developers.
  • Audits: Our public audit Reports, we publish 100% of reports, unless our customers ask us not to.

Our team has saved over 20 Million Dollars 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 $30 BLN in total 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 149 18

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

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

    Solidity 49 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 34 23

  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 16 10

Repositories

Showing 10 of 55 repositories
  • log-parser Public

    Npm Package for Medusa and Echidna log parsing logic

    Recon-Fuzz/log-parser’s past year of commit activity
    TypeScript 4 5 4 (1 issue needs help) 0 Updated Apr 17, 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 34 MIT 23 10 (2 issues need help) 3 Updated Apr 17, 2026
  • recon-fuzzer Public

    Smart contract fuzzer for Foundry projects — Echidna-inspired, written in Rust

    Recon-Fuzz/recon-fuzzer’s past year of commit activity
    Rust 6 GPL-2.0 0 0 0 Updated Apr 17, 2026
  • .github Public
    Recon-Fuzz/.github’s past year of commit activity
    0 0 0 0 Updated Apr 17, 2026
  • recon-magic-framework Public

    Autonomous Solidity Fuzzing via a Multi Agent Orchestration Framework

    Recon-Fuzz/recon-magic-framework’s past year of commit activity
    Python 2 0 30 2 Updated Apr 17, 2026
  • Recon-Fuzz/recon-mcp-chimera’s past year of commit activity
    TypeScript 0 MIT 0 0 0 Updated Apr 16, 2026
  • Recon-Fuzz/recon-mcp-knowledge’s past year of commit activity
    TypeScript 0 MIT 0 0 0 Updated Apr 16, 2026
  • recon-docs Public

    Documentation for the Recon UI

    Recon-Fuzz/recon-docs’s past year of commit activity
    JavaScript 1 6 2 2 Updated Apr 15, 2026
  • reconup Public
    Recon-Fuzz/reconup’s past year of commit activity
    Shell 0 0 0 0 Updated Apr 15, 2026
  • Recon-Fuzz/aave-v4-scfuzzbench’s past year of commit activity
    Solidity 0 0 0 1 Updated Apr 5, 2026

Top languages

Loading…

Most used topics

Loading…