Freedom251 › AI Coding Assistants
SeaShell
What SeaShell is
SeaShell is a terminal-native AI coding agent that runs locally on Linux, macOS, and Windows. It helps developers understand codebases, plan changes, apply diffs, and run tools, with chat assistance, codebase indexing, and terminal access. Its workflow starts with a read-only planning agent, asks before moving to a build agent, and places file edits behind diff review and permission checks. Users can bring provider keys, switch providers, or use local models. Supported shells include bash, zsh, fish, pwsh, nu, xonsh, and WSL. Local and remote Model Context Protocol servers can expose tools, prompts, and resources in the terminal workflow. SeaShell can discover models from Ollama and LM Studio on their listed local ports. Offline mode blocks network traffic except the configured model endpoint and local services. Core is free and includes local execution, plans, diffs, permissions, plugins, MCP servers, local models, perpetual Core updates, and community support. Team costs $30 a month per engineer when billed monthly.
Who it suits
Core suits people who want private local execution with community support. Pro is presented for solo engineers, Team for private engineering teams, and Enterprise for regulated organizations needing centralized controls.
What it does well
- Runs locally on three desktop platforms
- Read-only planning before edits
- Supports local models and provider keys
- MCP server integrations
- Offline network restriction mode
What to know first
- Hosted providers receive provider calls
- Not SOC 2 audited
- Core support is community-based
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Pro updates renewal | Extends Pro updates for another year | On request |
| Team | $30 engineer / month; $360 per engineer, billed annually · Everything in Pro · Central model and permission policies · SSO, roles, audit, and seat management · Shared configuration and release channels · Continuous updates and priority support | $30 a month |
| Team annual | Everything in Pro · Central model and permission policies · SSO, roles, audit, and seat management · Shared configuration and release channels · Continuous updates and priority support | On request |
| Core | Free forever · Local execution with your model keys · Terminal, plans, diffs, and permissions · Plugins, MCP servers, and local models · Core updates included forever · Community support | Free |
| Pro | $149 once; $59 per year to extend updates after 12 months · Everything in Core · Multi-agent and background workflows · Full project memory and indexing · Multi-repository orchestration · Every Pro update for 12 months | $149, paid once |
| Enterprise | Contracts start around $15k / year · Everything in Team · SAML, SCIM, and policy-as-code · Air-gapped deployment and release mirrors · Audit export and customer-managed keys · Onboarding, SLA, and named support | $15,000 a year |
As seashell.sh lists them, read 22 Sept 2026. The maker's own page has the final word.
Verdict
SeaShell emphasizes controlled terminal workflows, local models, and permission-gated changes. Its plans range from a free local setup to organization features such as SSO, audit controls, air-gapped deployment, and named support.
Facts from SeaShell's own pages
- Coding agent
- Yes · seashell.sh, 22 Sept 2026
- Audience
- Core is presented for anyone who wants to start privately, Pro for solo engineers, Team for private engineering teams, and Enterprise for regulated organizations. · seashell.sh, 11 Oct 2026
- Chat assistance
- Yes · seashell.sh, 22 Sept 2026
- Codebase indexing
- Yes · seashell.sh, 22 Sept 2026
- Compliance
- SeaShell states that it is not SOC 2 audited and makes no HIPAA product certification claim. · seashell.sh, 11 Oct 2026
- Free plan
- Yes · seashell.sh, 22 Sept 2026
- Integrations
- SeaShell supports local and remote Model Context Protocol servers, exposing discovered tools, prompts, and resources in its terminal workflow. · seashell.sh, 11 Oct 2026
- Local models
- SeaShell can discover chat models from Ollama on localhost port 11434 and LM Studio on localhost port 1234. · seashell.sh, 11 Oct 2026
- Model choice
- Users can bring their own provider keys, switch providers, or use local models. · seashell.sh, 11 Oct 2026
- Notable limit
- SeaShell says the selected hosted model provider receives provider calls, so buyers should review that provider's data handling before using sensitive repositories. · seashell.sh, 11 Oct 2026
- Product
- SeaShell is a terminal-native AI coding agent that runs locally and helps developers understand codebases, plan changes, apply diffs, and run tools. · seashell.sh, 11 Oct 2026
- Security
- Offline mode blocks network traffic except the configured model endpoint and local services. · seashell.sh, 11 Oct 2026
- Shell support
- SeaShell lists bash, zsh, fish, pwsh, nu, xonsh, and WSL as supported shells. · seashell.sh, 11 Oct 2026
- Support
- Core includes community support; Team includes priority support; Enterprise includes named support and an SLA. · seashell.sh, 11 Oct 2026
- Telemetry
- SeaShell telemetry uses an allowlist that excludes prompts, code, file paths, file names, repository names, and error messages. · seashell.sh, 11 Oct 2026
- Terminal access
- Yes · seashell.sh, 22 Sept 2026
- Workflow
- SeaShell drafts plans in a read-only agent, asks before switching to a build agent, and gates file edits behind diff review and permissions. · seashell.sh, 11 Oct 2026
Where SeaShell stands on Freedom251
- AI Coding Assistants#52 of 102