AgentAPIvsSandbox Agent
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
AgentAPI
Coder · Agent harness
OSS
Panel
7.31 spec wins
- Reliability
- 7.2
- Usefulness
- 6.7
- Cost
- 8.5
- Longevity
- 6.8
“Its web platform is a chat page served to your own laptop on port 3284, which makes it the most honest cloud on this board.”
Sandbox Agent
Rivet · Agent harness
OSS
Panel
7.23 spec wins
- Reliability
- 7.2
- Usefulness
- 7.0
- Cost
- 8.0
- Longevity
- 6.5
“It ships an Inspector UI, because the only way to trust an agent in a box is to watch it through the glass.”
Spec by spec
| Spec | AgentAPI | Sandbox Agent |
|---|---|---|
| Architecture | ||
| Category | Agent harness | Agent harness |
| Runs | local | local, sandbox, cloud |
| Platforms | macos, linux, windows, web | macos, linux, windows |
| Context window | not documented | agent-dependent |
| Protocols | ||
| MCP client | No | No |
| MCP server | No | No |
| Capabilities | ||
| Runs terminal commands | Yes | Yes |
| Multi-file edits | NoEditing is done by the wrapped agent; AgentAPI only relays messages to and from it. | Yes |
| Git operations | No | No |
| Browser control | No | No |
| Sandboxed execution | No | YesThe server is designed to run inside the sandbox; deployment guides cover E2B, Daytona, Modal, Cloudflare Containers, Vercel Sandboxes and Docker. |
| Multi-agent orchestration | No | No |
| Headless / CI mode | Yes | Yes |
| Models | ||
| Backbone | via wrapped agents (Claude Code, Goose, Aider, Gemini CLI, Amp, Codex) | via managed agents (Claude Code, Codex, OpenCode, Cursor, Amp, Pi) |
| Bring your own model | Yes | No |
| Local models | No | No |
| Cost | ||
| Pricing model | free | byok |
| Starts at | $0/mo | $0/mo |
| Free tier | Yes | Yes |
| Bring your own key | Yes | Yes |
| Openness | ||
| Open source | Yes | Yes |
| License | MIT | Apache-2.0 |
| GitHub stars | 1,500 | 1,582 |
Which one would each critic pick
| Critic | AgentAPI | Sandbox Agent | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 7.5 | 7.8 | Sandbox Agent — Pick it when you want to change which coding agent runs without changing your product; pick Warren if you want the run managed rather than merely exposed. |
| El Crítico | 6.5 | 6.8 | Sandbox Agent — Every install command in the documentation pins 0.4.x, which is the vendor telling you the interface is not settled yet, on a component everything else will depend on. |
| El Profesor | 7.0 | 7.5 | Sandbox Agent — Every event can be streamed into Postgres or ClickHouse for replay, and the interface is published as an OpenAPI document rather than described in prose. |
| La Inversora | 7.3 | 6.5 | AgentAPI — Coder gives this away because an agent that speaks HTTP belongs in a remote development environment, and that is the product with the price on it. |
| La Jefa | 7.0 | 6.8 | AgentAPI — Zero licence cost and the rare tool here that fits automation without argument, but the row carries no SSO, no SCIM and no audit log. |
| El Hacker | 8.5 | 7.8 | AgentAPI — MIT, one downloaded binary, `agentapi server -- claude`, and their answer on MCP is a README section showing you how to build that server yourself. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.