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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.
  • 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 165 19

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

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

    Solidity 53 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 36 26

  4. solidity-http solidity-http Public

    Solidity HTTP client

    Solidity 32 6

  5. recon-magic-framework recon-magic-framework Public

    Autonomous Solidity Fuzzing via a Multi Agent Orchestration Framework

    Python 26 1

  6. recon-fuzzer recon-fuzzer Public

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

    Rust 19 3

Repositories

Showing 10 of 57 repositories
  • 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 19 GPL-2.0 3 0 0 Updated Jul 28, 2026
  • recon-registry Public

    Community catalog of single self-contained fuzzing harnesses & mocks, deployable by name from the Recon operator.

    Recon-Fuzz/recon-registry's past year of commit activity
    Solidity 0 0 0 0 Updated Jun 25, 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 36 MIT 26 10 (2 issues need help) 3 Updated Jun 16, 2026
  • StakingRewards-invariants Public

    Foundry Starter for SNX Rewards Manager, the most OG contract still used in prod. NOTE: This is a 0.8 port, DO NOT USE WITHOUT AUDIT!

    Recon-Fuzz/StakingRewards-invariants's past year of commit activity
    Solidity 0 2 0 0 Updated Jun 3, 2026
  • safe-utils Public

    Interact with the Safe API from Foundry scripts

    Recon-Fuzz/safe-utils's past year of commit activity
    Solidity 18 10 6 (1 issue needs help) 0 Updated May 15, 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 26 1 32 2 Updated May 6, 2026
  • chimera Public

    Smart Contract Property-Based Testing Framework

    Recon-Fuzz/chimera's past year of commit activity
    Solidity 165 19 1 1 Updated Apr 24, 2026
  • 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
  • .github Public
    Recon-Fuzz/.github's past year of commit activity
    0 0 0 0 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

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