BabysittervsLemon
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
Babysitter
a5c.ai · Agent harness
OSS
Panel
6.12 spec wins
- Reliability
- 6.0
- Usefulness
- 6.0
- Cost
- 7.3
- Longevity
- 5.0
“It is called Babysitter and it supervises twelve coding harnesses, which is a ratio no actual babysitter would accept.”
Lemon
z80dev · Agent harness
OSSMCP
Panel
6.15 spec wins
- Reliability
- 5.7
- Usefulness
- 6.2
- Cost
- 7.2
- Longevity
- 5.3
“You can keep several specialist agents with separate memories and workspaces, which is one more org chart than most companies actually need.”
Spec by spec
| Spec | Babysitter | Lemon |
|---|---|---|
| Architecture | ||
| Category | Agent harness | Agent harness |
| Runs | local | local |
| Platforms | macos, linux, windows | macos, linux |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | No | Yes |
| MCP server | No | Yes |
| Capabilities | ||
| Runs terminal commands | Yes | Yes |
| Multi-file edits | Yes | Yes |
| Git operations | No | Yes |
| Browser control | No | Yes |
| Sandboxed execution | No | No |
| Multi-agent orchestration | YesWorkflows self-orchestrate across steps and sub-agents under the enforced process, which is the product's stated purpose. | Yes |
| Headless / CI mode | Yes | No |
| Models | ||
| Backbone | via managed harnesses (Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot and 7 more) | Anthropic, OpenAI, Google Gemini, Bedrock, Azure, 27 providers |
| Bring your own model | YesBabysitter ships no model; the model comes from whichever of the twelve supported harnesses you install its plugin into. | Yes |
| Local models | No | YesThe README says compatible local endpoints can be configured separately from the 27 hosted providers. |
| 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 | MIT | MIT |
| GitHub stars | 1,824 | 130 |
Which one would each critic pick
| Critic | Babysitter | Lemon | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 6.0 | 6.8 | Lemon — Pick it if you want an assistant you message from your phone the way you message a colleague; pick a terminal agent if the work never leaves the repository. |
| El Crítico | 5.8 | 5.5 | Babysitter — Twelve harnesses are listed and only two are described as fully worked, with three more marked experimental, so harness-agnostic is a roadmap rather than a state. |
| El Profesor | 6.3 | 6.0 | Babysitter — The workflow is defined in code and every step is enforced, which relocates verification from the model's judgement to conditions the author wrote in advance. |
| La Inversora | 5.8 | 5.3 | Babysitter — A permissive licence, 1,768 stars and no price, wrapped around coding agents whose vendors are all shipping their own workflow controls. |
| La Jefa | 6.0 | 5.0 | Babysitter — Free for sixty engineers, and every decision is written to an immutable journal, which is the audit artefact I cannot get from a coding agent any other way. |
| El Hacker | 6.8 | 8.0 | Lemon — MIT, twenty-seven providers plus my own local endpoints, and it speaks the tool protocol in both directions, so it consumes my servers and becomes one. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.