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🍉atlas
atlas · Uploads that never failwith Claude, Terminal
Stream large uploads in 8 MB chunks · #182
NW‑412 · Video uploads over 100 MB fail
Source Control
limits.ts
Upload API · atlas docs
localhost:5173
◆ atlasDocsPricingChangelogSign in
Uploads that never fail.
Resumable, chunked uploads with one line of code. Retries, checksums and progress included.
Start buildingResumablePick up where the network dropped.
VerifiedEvery chunk checksummed.
ObservableLive progress events.
import { upload } from "atlas";
await upload(file, { to: "/media", resumable: true });
Claude
Why does the upload test fail on large files?
› Worked for 14s Searched · Read · Edited
Searched maxBodySize
Read src/limits.ts
Edited src/limits.ts+2 −1
The body limit was 100 MB, so anything larger was rejected before upload. I raised it to 2 GB and send files in 8 MB chunks, so large uploads stream instead of buffering.
! Run npm test -- upload?
AllowAlways allowDeny
Reply to Claude…
Ask ▾✳Default High ▾
main2 changed files
Terminal
atlas main % npm test -- upload
✓ resumes after a dropped chunk (41 ms)
✓ rejects a bad checksum (12 ms)
✓ streams files over 2 GB (380 ms)
Tests 3 passed (3)
atlas main % git commit -am "Stream large uploads in 8 MB chunks"
[main 4f2a9c1] 2 files changed, 14 insertions(+), 3 deletions(-)
atlas main %
- Real Chromium
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🍉atlas
limits.tsTerminal
atlas · Uploads that never fail
Claude · upload limits
Stream large uploads in 8 MB chunks · #182
Source Control
limits.ts
limits.tsupload.ts
1export const limits = {
2 maxBodySize: 2_147_483_648,
3 chunkSize: 8 * MB,
4 retries: 5,
5};
6
7export function plan(size: number) {
8 return Math.ceil(size / limits.chunkSize);
9}
10
11export async function send(file: File) {
12 for (let i = 0; i < plan(file.size); i++) {
13 await putChunk(file, i);
14 }
15}
TypeScriptLn 3, Col 22Spaces: 2UTF‑8
Terminal
atlas main % npm test -- upload
✓ resumes after a dropped chunk (41 ms)
✓ rejects a bad checksum (12 ms)
✓ streams files over 2 GB (380 ms)
Tests 3 passed (3)
atlas main % git commit -am "Stream large uploads in 8 MB chunks"
[main 4f2a9c1] 2 files changed, 14 insertions(+), 3 deletions(-)
atlas main %
atlasmainzshRunning
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Pick a style, Flat or Glass, in dark or light, then a colour. Flat can blend in a second colour and add grain; Glass lets the desktop show through. The window changes as you choose. Try it here.
🎨ui-kit
Upload progress · ui‑kit
New focus ring tokens · #57
Upload API · atlas docs
Claude · progress states
localhost:6006/?path=/story/upload-progress
ui‑kitButtonCardUpload progressToast
Components / Upload progress / Resuming
onboarding.mp4Chunk 37 of 154 · resumed after a dropped connection
brand-assets.zipVerifying checksum
PauseCancel
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🍉atlas
atlas · Uploads that never fail
Terminal
Source Control
Files
limits.ts
Agent
Terminal
atlas main % npm test -- upload
✓ resumes after a dropped chunk (41 ms)
✓ rejects a bad checksum (12 ms)
✓ streams files over 2 GB (380 ms)
Tests 3 passed (3)
atlas main % git commit -am "Stream large uploads in 8 MB chunks"
[main 4f2a9c1] 2 files changed, 14 insertions(+), 3 deletions(-)
atlas main %
atlasmainzshRunning
Terminal
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🍉atlas
Claude · upload limitsCodex · upload guide
atlas · Uploads that never fail
Terminal
Source Control
Claude · upload limits
Why does the upload test fail on large files?
› Worked for 14s Searched · Read · Edited
Searched maxBodySize
Read src/limits.ts
Edited src/limits.ts+2 −1
The body limit was 100 MB, so anything larger was rejected before upload. I raised it to 2 GB and send files in 8 MB chunks, so large uploads stream instead of buffering.
! Run npm test -- upload?
AllowAlways allowDeny
Reply to Claude…
Ask ▾✳Default High ▾
main2 changed files
Codex · upload guide
Update the upload guide for the new chunk size.
› Worked for 9s Read · Edited
Read docs/upload.md
Edited docs/upload.md+6 −2
The guide now says uploads stream in 8 MB chunks and resume from the last good chunk. I also replaced the old 100 MB limit in the FAQ.
Reply to Codex…
Ask ▾Codex High ▾
main2 changed files
- Runs on the official Claude Agent SDK and Codex, with your own account.
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Small things, done carefully.
atlas docs · v2.4
Upload API
Uploads stream in 8 MB chunks. If the connection drops, the next request resumes from the last chunk the server verified, so a 2 GB file never starts over.
const job = await upload(file, { to: "/media", resumable: true });
job.on("progress", (p) => bar.set(p.percent));
Options
chunkSizeBytes per request. Default 8 MB.retriesAttempts per chunk before the job fails. Default 5.checksumVerified on the server for every chunk. Default sha256.
term
New Terminal↩
Terminal · atlas
Search the web for “term”
↩ Open⌥ Split⌘ Backgroundesc Close
◆ atlasDocsPricingChangelogSign in
Uploads that never fail.
Resumable, chunked uploads with one line of code. Retries, checksums and progress included.
Start buildingResumablePick up where the network dropped.
VerifiedEvery chunk checksummed.
ObservableLive progress events.
import { upload } from "atlas";
await upload(file, { to: "/media", resumable: true });
localhost:5173
Stream large uploads #182
Terminal · npm test
Upload API · atlas docs
atlas · Uploads that never failTerminal · npm test
Claude · upload limitswith Stream large uploads in 8 MB chunks · #182, e2e · CI run 4812
limits.tswith NW‑412 · Uploads fail, Upload health, Upload progress · Storybook
Team chat · #atlas
Stream large uploads in 8 MB chunks · #182
Claude · upload limits
e2e · CI run 4812
◆ atlasDocsPricingChangelogSign in
Uploads that never fail.
Resumable, chunked uploads with one line of code. Retries, checksums and progress included.
Start buildingResumablePick up where the network dropped.
VerifiedEvery chunk checksummed.
ObservableLive progress events.
import { upload } from "atlas";
await upload(file, { to: "/media", resumable: true });
e2e · uploads failed · CI run 4812
CI · atlas · run 4812 · uploads/chunked
e2e · uploads failed
streams files over 2 GB380 ms
resumes after a dropped chunk4.1 s
upload.test.ts:58
Expected offset 67108864, received 0
at resume (src/upload.ts:91)
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Read every line.
Melon is open source. The browser, its Chromium patches and its tools are on GitHub: audit it, build it yourself, or send a pull request. The repository is written for coding agents too: point Claude or Codex at AGENTS.md and it knows how Melon is built, how the pieces fit, and how to add your own tools and features.
melon-browsermain
AGENTS.mdStart here: how to build, change and extend Melon
apps/The web tools: terminal, editor, git, files, agents
core/Spaces, terminals, agents and the RPC bridge
docs/Architecture, build and extension guides
engine/Chromium patches and the embedding layer
macos/The native window, sidebar and Spaces
tooling/Build, sign and audit scripts
- De‑GoogledGoogle services and background requests removed from Chromium.
- Local blocklistPhishing and malware checks run on your device. Your URLs stay home.
- Made to be changedGuides for building, updating Chromium and extending every layer, ready for you or your agent.