MCP Comparison · 2026
Fly.io vs Heroku MCP Server
Comparing Fly.io and Heroku as MCP servers? Fly.io (manage fly.io hosting) is best when local flyctl users who want agent access. Heroku (manage heroku apps) is best when app lifecycle (create, rename, transfer). Both run as Model Context Protocol servers and can coexist in the same client. Updated 2026.
Side-by-side specs
Pulled from each MCP's verified fact sheet.
| Fly.io | Heroku | |
|---|---|---|
| Primary function | Manage Fly.io Hosting | Manage Heroku Apps |
| Maintainer | Fly.io | Heroku |
| Pricing | Freemium | Freemium |
| Setup complexity | Medium · ~5 min | Medium · ~5 min |
| Transport | Streamable HTTP, SSE | stdio |
| Auth model | API key | API key |
| License | Apache-2.0 | Apache-2.0 |
| Language | Go | TypeScript |
| Latest version | latest | latest |
| Compatible clients | Claude, Cursor, VS Code, Zed, Neovim, Windsurf, Fly.io accounts | Claude, Cursor, Any MCP-compatible client, Heroku accounts |
| Last verified | 2026-05-27 | 2026-05-27 |
Which one should you pick?
Decision rubric drawn from each MCP's documented strengths.
Choose Fly.io
- Local flyctl users who want agent access
- Managing Fly Machines from chat
- Deploys, scaling, secret rotation
Choose Heroku
- App lifecycle (create, rename, transfer)
- Dyno scaling and restart
- Add-on management
Pick something else if…
- Remote-only or team deployments (no hosted MCP)
- Unattended production scaling
Feature breakdown
Key capabilities each server ships out of the box.
Fly.io
- Built into flyctl — no separate install
- HTTP transport on port 8080 (configurable)
- SSE + streaming modes available
- Auto-config flags for Claude, Cursor, VS Code, Zed, Neovim, Windsurf
- `fly mcp inspector` for debugging
Heroku
- App + dyno + add-on tools
- Heroku Postgres ops (psql, info, backups, upgrade)
- Pipeline promote/list/info
- Reuses existing Heroku CLI auth
- Apache-2.0, TypeScript
Install snippets
Open the detail page for ready-to-paste config for every major client.
FAQ
Fly.io vs Heroku: which MCP server should I use?
Pick Fly.io when local flyctl users who want agent access. Pick Heroku when app lifecycle (create, rename, transfer). Fly.io is built for manage fly.io hosting, while Heroku focuses on manage heroku apps.
Can I run both Fly.io and Heroku together?
Yes. MCP clients run each server as a separate process and surface every server's tools simultaneously, so you can install both and let your agent decide which to call. Be deliberate with auth scopes when stacking servers.
How fresh is this comparison?
Updated for 2026. Fly.io's last verification: 2026-05-27. Heroku's last verification: 2026-05-27. We refresh detail-page facts on every catalog rebuild.
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