Vibe coding hardening

Your AI-built agent, made safe to run and maintain

An AI-built agent that holds up with real users. Tests from real cases and failure paths, typed contracts, security review and logging, then handed to your team.

Why fast prototypes stall

The demo runs. Nobody has tried a bad input.

Written to pass the demo: one path checked, errors printed and forgotten.

  1. 01

    Where it stallsA full rewrite, because the code looks messy.

    What we do Keep the working logic, harden around it.

  2. 02

    Where it stallsCalled finished because the demo passed.

    What we do Tests for the paths the demo skipped.

  3. 03

    Where it stallsKeys, prompts and config in the code.

    What we do Secrets stored, config in the environment, prompts versioned.

How we harden it

Code your developers can maintain

The features stay; what breaks them gets caught.

  1. 0103

    Reviewed as it is

    We read the whole codebase, run the agent and give each finding a severity and a fix.

    • Security and data review
    • Risky dependencies flagged
    • Keep, harden or rewrite
  2. 0203

    Hardened around the logic

    Tests come first, from real cases and failure paths; typed contracts then catch bad values, model output included.

    • Failed calls retried or reported
    • Logs and traces per request
    • Modules split under tests
  3. 0303

    Handed over to your developers

    Your developers review each change with us; the coding assistant can stay, with tests guarding it.

    • CI that blocks failing builds
    • README, runbook, decision notes
    • Walkthroughs with your developers
Engineering in the open

We help build what agentic AI runs on

Open standards, open-source tooling and published research, all public, so you can check our engineering before you hire us.

Shaping agentic AI

The first agentic AI engineering company to join the Agentic AI Foundation

The Linux Foundation formed it around Anthropic's MCP, OpenAI's AGENTS.md and Block's goose. AWS, Google and Microsoft are platinum members. In its own words: “Together, we're shaping the future of agentic AI.”

Open source

We build open-source agent tooling that other engineering teams install

9M+ PyPI downloads
3,900+ GitHub stars
31 public repositories

Framework contributors

When the framework breaks, we fix it at the source

We maintain our own open-source agent framework and contribute fixes to the frameworks our agents run on, through official partnerships with their teams. Breaking changes reach us before they reach your codebase.

Research

Our engineers and PhDs publish peer-reviewed research

Peer-reviewed papers on agent architectures, evaluation and AI security, and an open benchmark anyone can rerun against our results.

Track record

Frontier AI teams now build on what we shipped first

Our client agents were in production before most of today's agent frameworks had a stable release. You get a team that already knows what breaks between a promising demo and a system people rely on every day.

Engagement models

Ways to start

Each path starts with a free call with a founder or senior AI engineer. Changes ship only once they meet the agreed target.

FAQ

Vibe coding hardening, answered

What is vibe coding hardening? +
Vibe coding hardening makes an agent built by prompting AI coding assistants safe to run and change every day: review, tests, typed contracts, security, error handling, logging and a structure your developers can maintain. The features stay as they are.
What does vibe coding hardening include? +
It includes a review of the whole codebase with ranked findings and a keep, harden or rewrite call for each part. Then come unit and integration tests from real cases and failure paths, evaluation cases for every step a model decides, and typed contracts at API, tool and model boundaries. Keys leave the code and the git history; dependencies, authentication, data access and prompt injection paths are reviewed. Failed calls get timeouts, retries or fallbacks, every request gets logs and traces, and the code gets clear module boundaries, CI, a runbook and walkthroughs with your developers.
Do you rewrite the agent from scratch? +
Rarely as a whole. The review marks each part as keep, harden or rewrite, with the reason written down. Logic that works and passes the new tests stays.
Does it matter which AI coding tool built the agent? +
No. We work from the code in the repository. If the agent lives inside a hosted app builder, the first step is moving the code into a repository you control.
How do you handle secrets that were already committed? +
We find them in the code and in the git history, help you rotate them and move them to a secret store or the environment. Rotation matters more than deletion: a key that was ever committed has to be treated as exposed.
How long does hardening take? +
That depends on the size of the codebase and on what the review finds. The review comes first and ends with a fix plan and an estimate per part, so you agree the scope before the work starts.
Can our developers keep using AI coding assistants afterwards? +
Yes, if it helps them. After hardening, the tests, the typed contracts and the CI checks catch an assistant's mistakes before they are merged.
What does our team get at the end? +
The repository with tests, typed contracts and CI, logs and traces, a README whose setup steps work, a runbook, notes on the main decisions, and walkthroughs with the developers who will own the code.
Vibe coding hardening

Bring the repository. Leave with a plan.

The review comes first, with a fix plan and an estimate per part.