REXA ADE - Agentic Development Environment

Rexa workspace with the agents sidebar, two Claude Code sessions and the file explorer

Built around the way you work.

Native performance, customizable workflows, and tools that keep you close to the code as agents take on more of the work.

01 / PERFORMANCE02 / FLEXIBILITY03 / PEOPLE

Fast and effective

Native performance powered by Rust and GPUI to keep the workspace responsive as you run more agents, tools and pipelines in parallel.

Flexible and customizable

Bring your own agents, skills, and MCPs. Build your own workflows with the Rexa CLI and Extensions. Shape the workspace around the way you build.

Human-oriented

Built for human-in-the-loop workflows. Code editor with LSP, Git review, and GitHub/GitLab integration keep you close to the work and in control.

01 / BRING YOUR OWN AGENTS

Bring your own agents

Work with the agents you trust, together in one native workspace. Your tools. Your workflow.

Rexa  /  acme-api  /  Agents

PROJECTS

main

↑2

Update README badges

feat/billing

Add invoice rounding to b…

⠋

⠙

⠹

⠸

⠼

⠴

⠦

⠧

⠇

⠏

Fix flaky ledger reconcil…

Profile export job

rounding fix

↓3

ACME-WEB

billing-service

main

↑1

ACME-MOBILE

Claude Code · Invoice rounding

Claude Code  /  Sonnet

~/projects/acme-api · feat/billing

› Add currency-safe rounding to invoice totals.

⏺ Read  src/billing/invoice.ts

⏺ Edit  src/billing/invoice.ts  (+6 −1)

✓ Regression tests added · 23 passing

› Ask Claude Code to do anything

Codex · Webhook backoff

OpenAI Codex  /  GPT-5.4

~/projects/acme-api · fix/webhooks

› Retry failed webhooks with exponential backoff.

Read src/billing/webhooks.ts · inspected retry handler

Implemented capped backoff with jitter.

✓ pnpm test webhooks · 14 passing

› Ask Codex to do anything

Agents    Files    Git

AGENTS

3

Claude Code

Max 5x

2.0.14

·

3

memories

·

12

skills

Codex

0.46.0

·

0

memories

·

4

skills

Cursor Agent

hooks

2025.10.02

·

1

memories

·

0

skills

SESSIONS

9

Add invoice rounding

⠋

⠙

⠹

⠸

⠼

⠴

⠦

⠧

⠇

⠏

Editing invoice.ts

sonnet-4-5

Fix webhook retries

Approve test run

gpt-5-codex

Migrate ledger units

214 tests passing

opus-4-1

Explore ledger call sites

Review rounding helpers

Check rounding cases

Update money fixtures

Draft refunds API design

Updated refunds.md

sonnet-4-5

⑂ feat/billing

UTF-8   ·   TypeScript   ·   2 agents

02 / PARALLEL WORKTREES & PROJECTS

Parallel worktrees
and projects

Run agents in parallel across isolated worktrees. Switch between projects without losing your place, or your context.

Rexa  /  acme-api  /  Parallel worktrees

PROJECTS

main

↑2

Update README badges

feat/billing

Add invoice rounding to b…

⠋

⠙

⠹

⠸

⠼

⠴

⠦

⠧

⠇

⠏

Fix flaky ledger reconcil…

Profile export job

rounding fix

↓3

ACME-WEB

main

feat/checkout

fix/nav-overflow

↑1

feat/search

spike/graphql

billing-service

main

↑1

ACME-MOBILE

Claude Code · feat/billing

⑂ feat/billing

› Add invoice rounding.

⏺ Read src/billing/invoice.ts

⏺ Edit src/billing/invoice.ts

Rounded line items before summing tax.

✓ 23 tests passed

Ready for review.

› Ask Claude Code to do anything

routes.ts

TypeScript

1

import

{

Router

}

from

"express"

;

2

import

{

createInvoice

,

listInvoices

}

from

"../billing/invoices"

;

3

import

{

handleWebhook

}

from

"../billing/webhooks"

;

4

5

export const

router

=

Router

();

6

7

router

.

get

(

"/invoices"

,

async

(

req

,

res

)

=>

{

8

const

invoices

=

await

listInvoices

(

req

.

user

.

id

);

9

res

.

json

(

invoices

);

10

});

11

12

router

.

post

(

"/invoices"

,

async

(

req

,

res

)

=>

{

13

const

invoice

=

await

createInvoice

(

req

.

user

.

id

,

req

.

body

);

14

res

.

status

(

201

).

json

(

invoice

);

15

});

16

17

router

.

post

(

"/webhooks/stripe"

,

handleWebhook

);

⑂ feat/billing

UTF-8   ·   TypeScript   ·   2 agents

03 / AGENT INTERNALS

Inspect agent internals

Inspect prompts, tool calls and context. Understand what your agent is doing, not just what it tells you.

Rexa  /  acme-api  /  Agent internals

PROJECTS

main

↑2

Update README badges

feat/billing

Add invoice rounding to b…

⠋

⠙

⠹

⠸

⠼

⠴

⠦

⠧

⠇

⠏

Fix flaky ledger reconcil…

Profile export job

rounding fix

↓3

ACME-WEB

billing-service

main

↑1

ACME-MOBILE

Claude Code / Agent detail

Claude Code

2.1.4

Max

5h

42%

·

3h12m

Current session

7d

81%

·

4d6h

All models

Opus 7d

93%

·

4d6h

Opus only

$4.21

·

updated 12m ago

MCPs

4

Memories

2

Skills

24

Commands

2

Hooks

5

Config

5

Project

2

ledger-db

npx -y @acme/mcp-postgres --readonly

browser

Plugin

node ./servers/browser.js

Local

1

stripe-sandbox

Disabled

uvx mcp-stripe --test-mode

User

1

issues

https://mcp.example.com/issues/sse

Agents    Files    Git

AGENTS

3

Claude Code

Max 5x

2.0.14

·

3

memories

·

12

skills

Codex

0.46.0

·

0

memories

·

4

skills

Cursor Agent

hooks

2025.10.02

·

1

memories

·

0

skills

SESSIONS

9

Add invoice rounding

⠋

⠙

⠹

⠸

⠼

⠴

⠦

⠧

⠇

⠏

Editing invoice.ts

sonnet-4-5

Fix webhook retries

Approve test run

gpt-5-codex

Migrate ledger units

214 tests passing

opus-4-1

Explore ledger call sites

Review rounding helpers

Check rounding cases

Update money fixtures

Draft refunds API design

Updated refunds.md

sonnet-4-5

⑂ feat/billing

UTF-8   ·   TypeScript   ·   2 agents

04 / THE FULL GIT SUITE

Review with the
full Git suite

Review agent changes with a full Git toolkit. Stage the right hunks, make your commit and keep history in view.

Rexa  /  acme-api  /  Git review

src/billing/invoice.ts    +6 −1

1

import

{

Money

}

from

"../money"

;

2

import

{

roundHalfEven

}

from

"../money/round"

;

3

import

type

{

Invoice

,

LineItem

}

from

"./types"

;

5

const

TAX_RATE

=

0.08

;

⋯ 7 unchanged lines

14

15

export

function

tax

(

invoice

:

Invoice

):

Money

{

15

return

subtotal

(

invoice

.

lines

).

times

(

TAX_RATE

);

16

let

sum

=

Money

.

zero

(

"USD"

);

17

for

(

const

line

of

invoice

.

lines

)

{

18

const

amount

=

line

.

unitPrice

.

times

(

line

.

quantity

);

19

sum

=

sum

.

add

(

roundHalfEven

(

amount

.

times

(

TAX_RATE

)));

20

}

21

return

sum

;

22

}

Terminal · verify changes

$ pnpm test billing

✓ invoice.test.ts · 23 passed

$ git diff --stat

src/billing/invoice.ts    | 7 ++++++−

Ready to stage and commit.

› Ask Terminal to do anything

feat/billing

Changes

Compare

History

↑2

↓1

feat(billing): export invoices as CSV

Commit

STAGED

+184

-12

1

src

/

billing

1

invoice.ts

M

CHANGES

+46

-9

1

package.json

M

⑂ feat/billing

UTF-8   ·   TypeScript   ·   2 agents

05 / CODE EDITOR

Code editor with
LSP and Vim motions

Stay in flow with language-aware editing, LSP support and Vim motions. Go from an agent’s output to your own precise edit.

Rexa  /  acme-api  /  Code editor

routes.ts

TypeScript

1

import

{

Router

}

from

"express"

;

2

import

{

createInvoice

,

listInvoices

}

from

"../billing/invoices"

;

3

import

{

handleWebhook

}

from

"../billing/webhooks"

;

4

5

export const

router

=

Router

();

6

7

router

.

get

(

"/invoices"

,

async

(

req

,

res

)

=>

{

8

const

invoices

=

await

listInvoices

(

req

.

user

.

id

);

9

res

.

json

(

invoices

);

10

});

11

12

router

.

post

(

"/invoices"

,

async

(

req

,

res

)

=>

{

13

const

invoice

=

await

createInvoice

(

req

.

user

.

id

,

req

.

body

);

14

res

.

status

(

201

).

json

(

invoice

);

15

});

16

17

router

.

post

(

"/webhooks/stripe"

,

handleWebhook

);

2 errors · 3 warnings

Errors 2

Warnings 3

src/billing/invoice.rs

3

cannot find type `InvoiceId` in this scope

rustc

14:13

field `issued_on` is never read

rustc

16:9

mismatched types

rustc

24:26

expected `i64`, found `u32`

src/server/routes.ts

2

'req' is declared but its value is never read.

ts

8:22

Unexpected any. Specify a different type.

eslint

31:40

.github

/

workflows

docs

scripts

D

src

2

1

A

server

2

1

A

middleware

routes

2

1

A

billing.ts

M

health.ts

invoices.ts

A

users.ts

2

1

app.ts

config.ts

M

shared

/

types

index.ts

invoice.ts

web

U

main.ts

tests

U

fixtures

billing.test.ts

U

.env.example

.gitignore

deno.lock

Dockerfile

package.json

README.md

M

tsconfig.json

⑂ feat/billing

UTF-8 · TypeScript · Ln 8, Col 24

06 / KEYBOARD-FIRST

Keyboard-first and
command palette

Navigate the workspace without reaching for the mouse. Find actions, switch context and keep moving with the command palette.

Rexa  /  acme-api  /  Keyboard-first

Claude Code · Invoice rounding

Claude Code  /  Sonnet

~/projects/acme-api · feat/billing

› Add currency-safe rounding to invoice totals.

⏺ Read  src/billing/invoice.ts

⏺ Edit  src/billing/invoice.ts  (+6 −1)

✓ Regression tests added · 23 passing

› Ask Claude Code to do anything

Codex · Webhook backoff

OpenAI Codex  /  GPT-5.4

~/projects/acme-api · fix/webhooks

› Retry failed webhooks with exponential backoff.

Read src/billing/webhooks.ts · inspected retry handler

Implemented capped backoff with jitter.

✓ pnpm test webhooks · 14 passing

› Ask Codex to do anything

/ files · > commands · @ cards · ~ worktrees

esc

Toggle bottom panel

Toggle left sidebar

B

Toggle left sidebar focus

B

Toggle right space

R

Toggle right space focus

R

editor: go to definition

f12

extensions: install

github: open issues

github: open pull requests

github: open actions

navigate

open

⑂ feat/billing

UTF-8   ·   TypeScript   ·   2 agents

07 / BROWSER & MOBILE

Browser and
mobile simulator

Bring the browser and mobile simulator into your workflow. Check the interface while your agents work on what’s next.

Rexa  /  acme-api  /  Browser and mobile

localhost:3000/invoices/1042

ACME / BILLING

Invoice #1042

Prepared for Studio North

Ready to send

Description

Amount

Workspace Pro · 3 seats

$72.00

Additional usage

$18.46

Subtotal

$90.46

Tax (8%)

$7.24

Total due

$97.70

All amounts rounded to two decimal places.

Send invoice →

Claude · clicking

Browser · Mobile / 390 × 844

ACME / BILLING

Invoice #1042

Prepared for Studio North

Ready to send

Description

Amount

Workspace Pro · 3 seats

$72.00

Additional usage

$18.46

Subtotal

$90.46

Tax (8%)

$7.24

Total due

$97.70

All amounts rounded to two decimal places.

Send invoice →

⑂ feat/billing

UTF-8 · TypeScript · Ln 8, Col 24

08 / CLI, SKILLS & EXTENSIONS

Rexa CLI, skills
and extensions

Start from the terminal. Give agents reusable skills and extend your workspace with the tools that fit your workflow.

Rexa  /  acme-api  /  CLI, skills and extensions

Claude Code / Skills

Claude Code

2.1.4

Max

5h

42%

·

3h12m

Current session

7d

81%

·

4d6h

All models

Opus 7d

93%

·

4d6h

Opus only

$4.21

·

updated 12m ago

MCPs

3

Memories

2

Skills

24

Commands

2

Hooks

5

Config

5

All

Enabled

Project

3

db-migrations

Write and verify a reversible ledger migration.

invoice-fixtures

Generate mixed-currency invoice fixtures.

@api-reviewer

Reviews route handlers for missing auth checks and unvalidated input.

Extensions

Extensions

7 extensions

Search extensions

All

Rexa

Zed

Acme Deploy

rexa:acme-deploy · v0.3.1 · panel, command

Elixir

zed:elixir · v0.1.4 · language, grammar, server

Highlights

rexa:rexa-highlights · v0.1.0 · panel, command

Terminal / Rexa CLI

$ rexa agent list

Claude Code   working   feat/billing

Codex         working   fix/webhooks

$ rexa web snapshot

✓ Browser snapshot captured · 42 elements

⑂ feat/billing

UTF-8 · TypeScript · Ln 8, Col 24

Build more. Stay focused.

Download for macOS

Windows and Linux coming · Intel Mac

A fast and unified workspacefor building software with agents

Built around the way you work.

Fast and effective

Flexible and customizable

Human-oriented

Bring your own agents

Parallel worktrees and projects

Inspect agent internals

Review with the full Git suite

Code editor with LSP and Vim motions

Keyboard-first and command palette

Browser and mobile simulator

Rexa CLI, skills and extensions