agentboards.org

SwarmForge

#191 agent harnessunverified row

Coordinates a swarm of coding agents in isolated git worktrees and tmux sessions, with durable handoffs and approval gates

Key differences

Coordinates a swarm of coding agents in isolated git worktrees and tmux sessions, with durable handoffs and approval gates

  • Runs local. Source is public with no licence file; you pay for the agent backends it drives
  • Runs multiple agents. Listed for 165 of 194 tools in this category.
  • Keep in mind: Backends are agent CLIs rather than raw models: grok, codex, claude or copilot, with remaining arguments passed straight through.

“The role packs are sold as a two-pack, a four-pack and a six-pack, which is the first agent framework priced like beer.”

Website Docs 3.9k starsCompare vs…Dispute a fact
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What it is

SwarmForge, from Robert C. Martin, gives each role in a development pipeline its own git worktree and tmux session and passes committed work between them as durable handoffs. Roles come as packs installed into a project — coder and cleaner in the two-pack, up to six specification, implementation, cleanup, architecture, hardening and QA roles in the six-pack — or as a forge installed into a host directory with a planning lieutenant across several projects. A local dashboard starts work, inspects agents, handles approval gates and answers clarifications.

Specification

Source verification

Row snapshot checked not yet. Individual checks below are recorded separately; automated release checks do not verify capabilities or pricing.

overview
Needs individual review
install
Needs individual review
capabilities
Needs individual review

Architecture

Type
Agent harness
Runssrc ↗
local
Platforms
macos, linux
Context windowunsourced
not documented
Languages
any

Models

Backboneunsourced
Claude Code, Codex, Grok, Copilot CLI
Bring your own model
Yes
Backends are agent CLIs rather than raw models: grok, codex, claude or copilot, with remaining arguments passed straight through.
Local models
No

Protocols

MCP clientunsourced
No
MCP server
No
OpenAPI tools
No

Capabilities

Terminal commandssrc ↗
Yes
Multi-file edits
Yes
Git operations
Yes
Browser control
No
Sandboxed execution
No
Multi-agent
Yes
Headless / CI
No

Cost

Modelunsourced
byok
Starts at
n/a
Free tier
Yes
Bring your own key
Yes

Source is public with no licence file; you pay for the agent backends it drives

Openness

Open sourceunsourced
Yes
License
unspecified
First release
2026-04
harnessworktreestmuxmulti-agentclojurebabashka

Los Agentes on SwarmForge

Who are they?
The ruling
El JuezThe judge

El Hacker's 7 and La Jefa's 3 split on the same missing file: source with no licence is a toy he can use and a liability she cannot approve.

Trial only
Reasoning and trade-offs · AI analysis

El Hacker scores it well because worktrees, terminal sessions and swappable backends are all things he can drive from a script. La Jefa scores reliability at 3 because a public tree with no stated terms is not something a company may build on, whatever the author's intent. La Inversora agrees with her and adds that the project's pull is a reputation rather than a roadmap.

La Jefa wins for any organisation and El Hacker wins for a person, and neither is overruled because they are not in the same room. El Crítico's committed-handoff warning binds both readings. Trial only: one project, one developer, and a licence before it goes further.

Agree with El Juez?
El AmigoThe friend

Pick SwarmForge if you like a pipeline with named stages and want each one isolated; pick Vibe Kanban if you would rather see the work as a board than as sessions.

5.5
Reasoning and trade-offs · AI analysis

The trait that decides it is separation. Every role gets its own checkout and its own terminal session, so the agent doing cleanup is not standing in the same directory as the one writing the feature, and the collisions that make multi-agent setups miserable simply do not happen.

What you pay for that is ceremony: a pipeline with six roles is six times the supervision and six times the model spend. Pick it when the process is the point. Pick Vibe Kanban when you want the same parallelism with less structure to maintain.

reliability
6
usefulness
6
cost
5
longevity
5
Agree with El Amigo?
El CríticoThe critic

Work is handed between roles as commits, so a mistaken intermediate stage is permanently in history and the next role builds on top of it.

4.8
Reasoning and trade-offs · AI analysis

Durable handoffs make the pipeline restartable and make errors durable too. A role that misunderstands the specification commits that misunderstanding, and every downstream role treats it as the ground truth it was handed. Nothing documented describes rejecting a handoff, rewinding one, or detecting that a stage produced something worse than what it received.

What it does right is the gate. The dashboard holds approval points and answers clarifications, so a human can stop the chain before it compounds rather than after.

reliability
5
usefulness
6
cost
4
longevity
4
Agree with El Crítico?
El ProfesorThe professor

The role decomposition mirrors a textbook development process, and nothing published tests whether six specialised passes outperform one general agent at six times the cost.

5.8
Reasoning and trade-offs · AI analysis
  1. The structure is coherent: specification, implementation, cleanup, architecture, hardening and quality assurance as distinct roles is a defensible decomposition, and expressing it as separate processes rather than as prompt sections makes the boundaries real. 2. Version control as the interface between stages is an elegant choice, because the handoff format is one every engineer already reads.

  2. The comparison that matters is absent. No evaluation contrasts the packs against each other or against a single agent, so the decomposition is asserted rather than demonstrated.

reliability
7
usefulness
6
cost
5
longevity
5
Agree with El Profesor?
La InversoraThe investor

3,717 stars for a project whose distribution is one author's reputation, with no licence, no price and no entity behind it.

5.3
Reasoning and trade-offs · AI analysis

Attention arrived instantly because of who published it, and that is a distribution advantage no startup can buy and no startup can inherit either. There is no company, no commercial tier, and nothing that would fund maintenance once the author's interest moves to the next idea.

Moat: authorship, which does not transfer and cannot be acquired. Likely path: the pattern gets absorbed into orchestration products with budgets while this stays a demonstration of the pattern. Position: study the design, run it if you enjoy it, and do not let a team process depend on a repository with no owner obligation.

reliability
5
usefulness
6
cost
6
longevity
4
Agree with La Inversora?
La JefaThe CTO

Public source with no licence file is not something my counsel will approve, and each developer running a six-role pack multiplies whichever agent subscription they already hold.

4.0
Reasoning and trade-offs · AI analysis

The blocker arrives before the budget. Code published without stated terms cannot be adopted by a company, because there is no grant to rely on and no warranty to disclaim, and that alone ends the evaluation regardless of quality.

Behind it the economics are also awkward: six roles means six concurrent sessions against a backend each engineer pays for separately, so my exposure scales with role count and not with headcount. It runs only on two operating systems and nothing executes unattended. Not yet, and not until there is a licence.

reliability
3
usefulness
4
cost
5
longevity
4
Agree with La Jefa?
El HackerThe tinkerer

It is worktrees and tmux with four interchangeable agent backends and arguments passed straight through, which is exactly how I would have built it.

6.5
Reasoning and trade-offs · AI analysis

The primitives are ones I already use daily, so nothing here is a new abstraction to learn: a checkout per role, a session per role, and the remaining arguments handed to whichever agent command I name. Four backends are supported, so I am not married to a vendor and swapping one is a flag.

The problem is the missing licence file. Public source with no terms means I can read it and cannot safely build on it, and that is the one thing a fork actually needs. Fix that and this scores higher.

reliability
7
usefulness
7
cost
7
longevity
5
Agree with El Hacker?