workspace for humans and AI agents
workspace for humans and AI agents
workspace for humans and AI agents

One workspace for docs, agents, governance, and delivery.

Map List
3 running ready
👑
Program Manager
PgM · OpenClaw
Working 2m ago
🗺
Technical PM
TPM · OpenClaw
Idle 14m ago
Human Engineer
review lead
Reviewing live
Running TPM · acme-platform
Encryption rollout migration
Writing vault rotation handler…
live 4m ago
Finished PgM · acme-platform
Adapter pluggability docs
✓ exit 0 8m ago
Timeline last 8 events
14:32 Manager Delegated encryption rollout to TPM
14:31 Worker Worker arca-7 spawned — encryption migration
14:28 Engineer Flagged release blockers for TPM
14:25 Worker Worker arca-9 finished — adapter docs — exit 0
14:20 Manager Sprint 7 retro completed — 3 items flagged
Connects with your stack
GitHub
Jira
Confluence
Slack
Microsoft Teams
Notion
Obsidian
Cloudflare
AWS
Google Cloud
OpenClaw
Linear
Vercel
Docker
Figma
VS Code
GitHub
Jira
Confluence
Slack
Microsoft Teams
Notion
Obsidian
Cloudflare
AWS
Google Cloud
OpenClaw
Linear
Vercel
Docker
Figma
VS Code

Four things every team shipping with agents needs.

Solo builders and engineering teams keep reaching for the same four primitives. Arca ships them as one harness so the agents, the people, and the work stay in sync.

01

Persistence

One vault holds the project, the agents, and the documents. Sessions end; state stays. No work lost between runs.

02

Governance

Constitutions per manager, provider fences, claim tokens, and an append-only ledger. Agents act inside lines you set.

03

Agent management

Spawn, name, and retire managers and workers from one canvas. Each one keeps its role, its prompt, and its history.

04

Observability

Every frame, claim, and outcome is written to a timeline you can replay. See what an agent did, why, and when.

FIG 0.5
0.5 Built for →

Two cohorts. One harness.

Arca is shaped by the two groups already shipping with agents today. The needs overlap; the surface is the same.

For solo builders

One operator. A fleet of agents.

Run a personal program desk: spawn agents for product, code, review, and release; keep the documents, the chat history, and the project state in one vault you own.

  • ·Project persistence
  • ·Agent governance
  • ·Document store
  • ·Provider fences
  • ·Run history replay
  • ·Local-first vault
For engineering teams

Humans and agents in one workflow.

For startup, midsize, and enterprise teams running a hybrid model: agents take the well-shaped work, engineers take the judgement calls, and the harness keeps the handoff legible.

  • ·Hybrid workflows
  • ·Workspace isolation
  • ·Review queues
  • ·Policy + audit log
  • ·Org-wide observability
  • ·BYO provider keys
FIG 1.0
1.0 Persistence →

Your project, agents, and documents in one vault.

Sessions end; state stays. Arca writes every agent, prompt, and document into a local-first vault you own, so a builder picks up tomorrow exactly where the agents left off tonight.

acme-platform ···
Canvas Project Control
📁 Documentations
constitutions
📄 program-manager.md
📄 technical-pm.md
📄 project-manager.md
📄 code-qa.md
📄 sentinel.md
runbooks
📄 sprint-planning.md
📄 release-checklist.md
specs
📄 activity.jsonl
📄 project.yaml
constitutions/ program-manager.md
Constitution
name: program-manager
role: CEO of the workspace
defaultModel: claude-sonnet-4-20250514
directives:
- Delegate technical deep-dives to TPM
- Never spawn more than 4 concurrent workers
- Log every delegation to the activity ledger
- Block cross-workspace file reads
fences:
providers: [claude, openai]
maxTokens: 200000
crossWorkspace: deny
1.1 Vault + 1.2 Document store + 1.3 Ledger + 1.4 Workspace isolation +
FIG 2.0
2.0 Agent management →

Spawn agents in role. Keep them in role.

Every agent has a named manager constitution that holds its role, prompt, and history. Solo builders run the full set themselves; teams assign disciplines per agent. Replies land in the same ledger, never a side channel.

Agent Communication Flow
OperatorManagerWorker
You → Program Manager
Main control channel
active
Sprint 7 standup fired automatically · 3 streams green, 1 amber
👤You
Where does the workspace stand for the Q3 release?
👑Program Manager· 2m ago
Three streams green. Encryption rollout slipped — I'm delegating to TPM now.
delegated → TPM
👑Program Manager· 30s ago
Spawned worker arca-7. No human action required tonight.
spawned worker
Message…
delegates
PgM → Technical PM
Delegation channel
delegating
👑Program Manager· 2m ago
Encryption rollout slipped Sprint 7. Own this: draft a migration plan with parallel-run window, then spawn build workers.
[DELEGATE]
🗺Technical PM· 1m ago
Accepted. I drafted a 4-step plan: schema freeze → rotation handler → parallel run → cutover. Spawning worker now.
accepted
🗺Technical PM· 45s ago
Worker arca-7 spawned for rotation handler. ETA: 12 minutes. I'll run verify-scope when it exits.
spawned worker
🗺Technical PM· 20s ago
Open question for PgM: keep legacy event shape for 2 releases or 1?
[MSG to:PgM]
Message…
spawns
TPM → Worker arca-7
Build scope · live
running
🗺Technical PM· 45s ago
Build the vault rotation handler per the migration spec. Workspace: acme-platform. Scope: build.
prompt
Worker arca-7· 30s ago
Reading vault/rotation.ts and vault/keys.ts. Planning handler structure…
build
Worker arca-7· 12s ago
Writing vault rotation handler with AES-256 key derivation. Added rollback on partial failure.
writing…
Message…
[DELEGATE]routes task to another manager[MSG to:PgM]sends message back up the chain
2.1 Program Manager + 2.2 Technical PM + 2.3 Project Manager + 2.4 Constitution authoring +
FIG 3.0
3.0 Hybrid workflow →

Humans and agents on the same board.

Engineers take the judgement calls; agents take the well-shaped work. Drag a card to Review and the agents replan. The handoff stays legible and the queue stays one queue.

Development methodology
Sprint cadence
Sprint 7 - Q3 ReleaseActive
31 pts - 6 stories
Todo2
  • QueuedTPM
    Wire R2 release channel
    Build042
  • QueuedPjM
    Spec the waitlist form
    Build043
In Progress2
  • Runningarca-7
    Encryption rollout migration
    Build038agent
  • Runningarca-9
    Adapter pluggability docs
    Build039agent
Review1
  • In ReviewCode QA
    Cross-workspace fence
    Verify035
Done1
  • Donearca-4
    Memory compaction batch
    Build031agent
3.1 Shared cards + 3.2 Claim tokens + 3.3 Worker spawn + 3.4 Review queue +
FIG 4.0
4.0 Governance →

Agents act inside the lines you set.

Constitutions, provider fences, claim tokens, cross-workspace fences, and an append-only ledger. Solo builders set the policy themselves; teams roll it out once and audit centrally.

📜 Constitution Editor
program-manager valid
1 name: program-manager
2 role: CEO of the workspace
3 defaultModel: claude-sonnet-4-20250514
4  
5 directives:
6 - Delegate technical deep-dives to TPM
7 - Never spawn more than 4 concurrent workers
8 - Log every delegation to the activity ledger
9 - Block cross-workspace file reads
10  
11 fences:
12 providers: [claude, openai]
13 maxTokens: 200000
14 crossWorkspace: deny
15 sandbox: strict
🛡 Govern
Fences & policies for acme-platform
Provider Fences
claude allowed
openai allowed
ollama local only
gemini blocked
Workspace Policies
Cross-workspace reads deny
Max concurrent workers 4
Auto-fire ceremonies on
Audit logging append-only
Sandbox policy strict
📋 Audit Ledger append-only · immutable
Filter Export
14:32:08 spawn Worker arca-7 spawned Program Manager
14:32:06 fence Provider fence checked: claude → allowed System
14:31:55 delegate Delegation: encryption-rollout → TPM Program Manager
14:31:44 deny Cross-WS read denied: /other-workspace/secrets.yaml Sentinel
14:28:12 message Operator message received System
14:25:33 exit Worker arca-9 exited: exit 0 · adapter-docs System
14:22:15 deny Sandbox denial: fs.write /etc/hosts blocked Sentinel
4.1 Constitutions + 4.2 Provider fences + 4.3 Cross-WS fence + 4.4 Audit ledger +
FIG 5.0
5.0 Observability →

See what every agent did. And why.

Frames, claims, and outcomes land on a tape you can scroll, filter, and replay. Debug a run; audit a release; show the board what the agents shipped this week.

Timeline last 10 events
Filter Export
14:32:08 Manager Program Manager Delegated encryption rollout to TPM 2m ago
14:31:44 Worker arca-7 Worker spawned — encryption migration 3m ago
14:28:12 You Sent: 'start the Q3 release plan' 6m ago
14:25:33 Worker arca-9 Worker exited — adapter docs — exit 0 9m ago
14:22:15 Manager Project Manager Sprint 7 retro completed — 3 items flagged 12m ago
14:20:01 Worker arca-4 Worker exited — memory compaction — exit 0 14m ago
14:18:45 Manager Technical PM Migration plan drafted — 4 steps, parallel-run window 15m ago
14:15:22 Worker arca-12 Worker spawned — legacy adapter spike 19m ago
14:12:08 Manager Code QA Audit complete — 2 issues filed, coverage at 72% 22m ago
14:10:00 You Approved: release 0.1.3 staging deploy 24m ago
Program Manager: Delegated encryption rollout to TPM ·
arca-7: Worker spawned — encryption migration ·
Sent: 'start the Q3 release plan' ·
arca-9: Worker exited — adapter docs — exit 0 ·
Project Manager: Sprint 7 retro completed — 3 items flagged ·
arca-4: Worker exited — memory compaction — exit 0 ·
Technical PM: Migration plan drafted — 4 steps, parallel-run window ·
arca-12: Worker spawned — legacy adapter spike ·
Code QA: Audit complete — 2 issues filed, coverage at 72% ·
Approved: release 0.1.3 staging deploy ·
Program Manager: Delegated encryption rollout to TPM ·
arca-7: Worker spawned — encryption migration ·
Sent: 'start the Q3 release plan' ·
arca-9: Worker exited — adapter docs — exit 0 ·
Project Manager: Sprint 7 retro completed — 3 items flagged ·
arca-4: Worker exited — memory compaction — exit 0 ·
Technical PM: Migration plan drafted — 4 steps, parallel-run window ·
arca-12: Worker spawned — legacy adapter spike ·
Code QA: Audit complete — 2 issues filed, coverage at 72% ·
Approved: release 0.1.3 staging deploy ·
5.1Lifecycle frames+ 5.2Run replay+ 5.3Snapshots+ 5.4Cycle metrics+
FIG 6.0
6.0 Operators →

Used by solo builders and engineering teams.

Solo builder

“I run six agents on my own product. The vault means I never have to re-explain the project on Monday morning.”

Mara Eskola
Solo founder, Trellis
Engineering team

“Our hybrid team finally has one queue. Engineers and agents work the same board, and audit is a tab away.”

Dan Pham
Head of platform, Kindling (50 engineers)
Engineering team

“Constitutions per agent and an append-only ledger were the unlock for security review. We rolled it out org-wide in a week.”

Inês Vidal
Director of engineering, Arclight Studio
Solo builder

“I am the operator and the engineer. Arca holds the documents, agents, and history so I can keep shipping at one-person scale.”

Kai Watanabe
Indie builder, Lumenwork
Solo builder

“I run six agents on my own product. The vault means I never have to re-explain the project on Monday morning.”

Mara Eskola
Solo founder, Trellis
Engineering team

“Our hybrid team finally has one queue. Engineers and agents work the same board, and audit is a tab away.”

Dan Pham
Head of platform, Kindling (50 engineers)
Engineering team

“Constitutions per agent and an append-only ledger were the unlock for security review. We rolled it out org-wide in a week.”

Inês Vidal
Director of engineering, Arclight Studio
Solo builder

“I am the operator and the engineer. Arca holds the documents, agents, and history so I can keep shipping at one-person scale.”

Kai Watanabe
Indie builder, Lumenwork
FIG 8.0
8.0 Pricing →

Free during beta.

Arca is free to download and use while the harness is in private beta. Solo plans stay generous; team and enterprise plans land when beta closes. Existing workspaces keep their data.

Solo · Beta
$0 / month

For one operator running their own fleet. Bring your own provider keys.

Arca
Join the waitlist
Arca is in private beta · macOS
Get early access to the harness. We'll send a download link when your spot opens — usually within a few days.
No spam · Unsubscribe anytime · macOS only for now
  • · Local-first vault
  • · Unlimited agents and workspaces
  • · Provider fences and run replay
  • · Append-only ledger
Teams · Preview
Talk to us

For startup, midsize, and enterprise teams running hybrid workflows.

Contact us
  • · Workspace isolation per team
  • · Org-wide audit ledger
  • · Review queues + policy
  • · SSO and provider key vaulting

One harness for solo builders and engineering teams.

Persistence, governance, agent management, and observability — built for the way humans and agents actually ship together.

Arca
Join the waitlist
Arca is in private beta · macOS
Get early access to the harness. We'll send a download link when your spot opens — usually within a few days.
No spam · Unsubscribe anytime · macOS only for now
Talk to us about teams