Multi-Agent Parallel Development: Designing a Workflow for Three Simultaneous Tasks with Claude Squad

With worktree isolation and auto-accept mode understood, this article puts them together — what a real multi-agent parallel development workflow actually looks like.

This isn't theory. It's a pattern you can apply directly.

The Core Prerequisite for Parallel Development

Before starting, confirm one thing: do the tasks you want to run in parallel depend on each other?

• Task A's output is Task B's input → not suitable for parallel, run sequentially
• Task A and Task B modify the same function → can be parallel, but expect merge conflicts
• Tasks A, B, C are independent, modifying different modules → fully suitable for parallel

Claude Squad's worktree isolation ensures parallel tasks won't interfere with each other during execution, but if two tasks ultimately modify the same place, you'll still need to resolve conflicts at merge time — that's normal git behavior, not a Claude Squad problem.

The ideal parallel scenario: tasks have no code-level overlap.

A Real Scenario: Monday Morning at the Start of a Sprint

Say you have three things for agents to handle today:

1. Write API documentation: Complete JSDoc for three existing endpoints
2. Add unit tests: Bring UserService test coverage up to 80%
3. Refactor config loading: Centralize scattered environment variable reads into a single ConfigService

These three are independent, touching different parts of the codebase — perfectly suited for parallel execution.

The Workflow

Step 1: Launch Claude Squad (with -y recommended)

cs -y

These tasks are all low-risk — documentation and tests rarely have destructive side effects, so auto-accept makes sense here.

Step 2: Create Three Sessions

Press N and enter the first task's description:

Complete JSDoc for all endpoints in src/api/users.ts, src/api/posts.ts,
and src/api/comments.ts, including @param, @returns, and @throws.
Use the most complete existing endpoint as a reference for format.

After creating the first one, press N twice more and enter:

Write unit tests for src/services/UserService.ts,
using Jest, targeting 80% coverage.
Put the test file at src/__tests__/UserService.test.ts

Find everywhere in src/ that directly reads process.env,
and change them all to go through a new src/services/ConfigService.ts.
ConfigService should have type definitions and throw clear errors
at startup if required environment variables are missing.

Step 3: Let Them Run While You Do Other Things

All three sessions are created and agents are running. Now you can:

• Review someone else's PR
• Check Slack messages
• Get a coffee
• Start planning the design for the next feature

The left panel in the TUI will show each session's status — you don't need to watch it.

Step 4: Monitor Progress

After some time, return to Claude Squad and use ↑/↓ to switch between sessions, checking the output on the right.

If a session gets stuck (e.g., the agent is waiting for unexpected input), press ↵ to attach and add clarification, then ctrl-q to return to the TUI.

Step 5: Review the Diffs

When each session finishes, press tab to switch to diff view:

• What did the agent change? Is it within the expected scope?
• Did it touch anything it shouldn't have?
• Does the logic look correct?

This review step cannot be skipped — it's the boundary between "agent execution" and "human confirmation."

Step 6: Push and Merge One by One

After each session is reviewed and confirmed good, press s to push to GitHub, then open a PR. Three PRs, each independent, can be opened simultaneously with CI running in parallel, each reviewed separately.

Recommendations on Task Count

2-3 tasks simultaneously: Easiest to manage, review cognitive load is manageable.

4-5 tasks simultaneously: Possible, but ensure each task is sufficiently independent and budget enough time for review.

More than 5: At this point your bottleneck is usually not the agents' execution speed but your own review speed. Stacking too many tasks just causes diff buildup — you still have to go through them one by one.

Tips for Task Decomposition

The quality of parallel development depends heavily on how well you break down tasks, not just how well you use the tool.

One session = one clear boundary: "Help me refactor the entire backend" is not a good session task. "Move database operations from UserController into UserRepository" is.

Give agents enough context: In the prompt, specify which files to modify, which existing implementation to reference, and what "done" looks like. The more specific the information, the lower the chance of the agent going off course.

Avoid cross-session code dependencies: If task A needs to add a function and task B needs to call that function — these two tasks shouldn't run at the same time, because B's worktree doesn't have the function A added yet.

With the parallel workflow mastered, the next step is letting Claude Squad remember your tool preferences — configuring profiles so different tasks can use different AI agents.

Previous: Auto-Accept Mode: Let Agents Run in the Background While You Do Other Things Next: Configuration and Profiles: Let Claude Squad Remember Your Tool Preferences