Sandbox AgentvsTrinity
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
Sandbox Agent
Rivet · Agent harness
OSS
Panel
7.21 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.”
Trinity
Ability AI · Agent harness
OSSMCP
Panel
7.24 spec wins
- Reliability
- 7.2
- Usefulness
- 7.5
- Cost
- 7.8
- Longevity
- 6.3
“Agents escalate their approvals to a human operator queue, which is a promotion nobody on the team applied for.”
Spec by spec
| Spec | Sandbox Agent | Trinity |
|---|---|---|
| Architecture | ||
| Category | Agent harness | Agent harness |
| Runs | local, sandbox, cloud | local, cloud, sandbox |
| Platforms | macos, linux, windows | macos, linux, web |
| Context window | agent-dependent | not documented |
| Protocols | ||
| MCP client | No | No |
| MCP server | No | Yes |
| Capabilities | ||
| Runs terminal commands | Yes | Yes |
| Multi-file edits | Yes | YesFiles are changed by the Claude Code or Gemini agent Trinity runs inside each container, not by Trinity itself. |
| Git operations | No | YesAgent workspaces and state are versioned in Git, credentials are stored encrypted in the repository, and agents can be created from a GitHub template. |
| Browser control | No | No |
| Sandboxed execution | YesThe server is designed to run inside the sandbox; deployment guides cover E2B, Daytona, Modal, Cloudflare Containers, Vercel Sandboxes and Docker. | Yes |
| Multi-agent orchestration | No | Yes |
| Headless / CI mode | Yes | YesAgents run unattended on cron schedules and can be started through the REST API or Trinity's MCP tools; there is no dedicated CI action. |
| Models | ||
| Backbone | via managed agents (Claude Code, Codex, OpenCode, Cursor, Amp, Pi) | Claude Opus, Claude Sonnet, Claude Haiku, Gemini |
| Bring your own model | No | Yes |
| Local models | No | No |
| Cost | ||
| Pricing model | byok | byok |
| Starts at | $0/mo | $0/mo |
| Free tier | Yes | Yes |
| Bring your own key | Yes | Yes |
| Openness | ||
| Open source | Yes | Yes |
| License | Apache-2.0 | Apache-2.0 |
| GitHub stars | 1,582 | 605 |
Which one would each critic pick
| Critic | Sandbox Agent | Trinity | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 7.8 | 7.3 | 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 | 6.8 | 6.8 | no preference |
| El Profesor | 7.5 | 7.3 | 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 | 6.5 | 7.0 | Trinity — 506 stars, a named company, and a plugin marketplace attached to a free platform: the software is the distribution and the marketplace is the business. |
| La Jefa | 6.8 | 6.8 | no preference |
| El Hacker | 7.8 | 8.3 | Trinity — Apache-2.0, self-hosted with one script, and an MCP endpoint at /mcp exposing over ninety tools, so my own agent can drive the whole fleet. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.