Tools for an AI coding agent workflow

Four tools for four steps: writing code with an agent, reviewing pull requests before merge, running agents on your own servers or in the cloud, and giving people and agents self-hosted development workspaces. Agents run commands and hold credentials, so the security record matters as much as features: all four products have documented incidents or flaws, most of them patched. This is not a bundled purchase. Apart from the OpenHands README stating that Agent Canvas can run OpenCode, no integration between these products is claimed.

For

Developers and engineering teams adopting AI coding agents

Typical cost

Costs are not added up because the plans serve different audiences. For individuals: OpenCode is free (you pay for models) or Go at $10/month; CodeRabbit reviews public repos for free; OpenHands Agent Canvas and Coder Community are free and self-hosted. For teams and businesses: CodeRabbit Essentials is $24 per developer per month billed yearly ($30 billed monthly); OpenHands Teams is $500/month for up to 10 users, plus $50/month per extra seat; OpenCode Go Teams, Coder Premium and AI Premium have no published price. On the free editions of OpenCode and OpenHands, you pay for model usage yourself.

1. 

   1. OpenCode – Write code with an agent

   MIT-licensed open-source coding agent for the terminal, desktop and web; connects to 200+ model providers via Models.dev, including local models, or reuses an existing ChatGPT Plus/Pro or GitHub Copilot plan. The software is free; Go is $10/month (billed monthly only) for 32 curated models if you would rather not manage API keys. Trade-off: it patched four command-execution flaws in 2026, including the Critical-rated CVE-2026-22813, so use 1.18.33 or later. Per Shareuhack, early versions spoofed a Claude Code header to use Claude subscriptions; Anthropic blocked this from January 2026 and OpenCode removed the code, so Claude now needs an API key or a separately installed Claude Code

   Read our full OpenCode review

   7.0/10
2. 

   2. CodeRabbit – AI pull request review

   Reviews PRs automatically on GitHub, GitLab, Bitbucket and Azure DevOps, with a VS Code extension, a JetBrains plugin (beta) and a CLI. Public repos are reviewed for free; private repos need a paid plan from $24 per developer per month billed yearly, Essentials links only 1 repo, and there is a 14-day trial. Trade-off: code is sent to OpenAI and/or Anthropic for review, and the privacy policy states CodeRabbit trains its systems on open-source code. In 2025 Kudelski Security reported that a malicious PR could run code on CodeRabbit servers and expose its GitHub App private key; CodeRabbit called it an oversight, says it fixed it within 12 hours and found no evidence of customer data access

   Read our full CodeRabbit review

   6.8/10
3. 

   3. OpenHands – Run and automate agents on servers or in the cloud

   The open-source (MIT) Agent Canvas connects to local, self-hosted, Cloud or Enterprise backends, triggers agents on a schedule or from webhooks, and per the README can run third-party agents such as Claude Code, Codex, Gemini CLI and OpenCode. Self-hosting is free, with your own LLM and infrastructure costs; there is no paid plan for individuals, and the cheapest is the business Teams plan at $500/month for up to 10 users; the pricing page lists no Cloud price. Trade-off: CVE-2026-33718 (High) was fixed in 1.5.0; researcher Johann Rehberger published a prompt-injection route to leak a GitHub token, and his post does not confirm a fix; OpenHands itself says its sandbox does not stop exfiltration of secrets in the agent's environment. The privacy policy allows content from its services to be used for model training with no stated opt-out; self-hosted setups send data through the vendor only when connected to its Cloud backend

   Read our full OpenHands review

   6.9/10
4. 

   4. Coder – Self-hosted workspaces for people and agents

   Workspaces are defined in Terraform templates and run on Kubernetes pods, Docker containers or EC2 VMs, with admins approving images and setting resource limits. Coder Agents run in the control plane, support several model providers, and offer audit logging and per-user spend limits. The Community edition (AGPL-3.0) is free with unlimited workspaces but at most 5 active Coder Agents and 1 integration; Premium and AI Premium prices are unpublished. Trade-off: per Coder, on 31 Aug 2026 a compromised Cloudflare API key let an attacker redirect part of registry.coder.com traffic for about 14 hours to serve modules targeting AWS, GCP and Azure credentials; Coder says it remediated the same day and advises upgrading and rotating potentially exposed credentials. Between 27 Oct and 11 Nov 2026 the project also published at least 10 GitHub advisories, two rated High

   Read our full Coder review

   6.9/10