Codestamp is an open source API client with a Rust core. It needs no account, keeps your collections on your computer, and shows each collection as numbered steps instead of a strip of tabs.
Opens GitHub Releases, where you pick Codestamp_0.5.0_x64-setup.exe.
sudo apt install codestampRun it after you add the Codestamp APT repository. See the three steps.
Run it in the folder where you saved the .deb from GitHub Releases.
Codestamp runs its network core in Rust on Tauri 2 and draws its Svelte 5 interface in the WebView your system already has: WebView2 on Windows, WebKitGTK on Linux. There is no copy of Chromium inside, so the installer is about 6.4 MB.
About 6.4 MB for the first two
Tab-based clients open each request in a new tab, and a busy day ends with a row of tabs to sort through. Codestamp shows a collection as numbered steps. The request you work on opens as a card in its place, and the others stay as one-line rows.
Opening a step folds the one before it back into a row.
Codestamp saves each change as you type, so there is no unsaved tab to close at the end of the day.
Sections fold away, and the step numbers of the other requests stay where they are.
HTTP, GraphQL, WebSocket, Server-Sent Events, gRPC, SOAP and MCP requests sit side by side as numbered steps in the same notebook.
Query, headers and path variables, with bodies in JSON, text, XML, HTML, form, multipart or binary. A request takes its auth from the collection, or you set Basic, Bearer, API key, Digest, AWS Signature V4 or OAuth 2.0 on the request itself.
:id get their own table.Codestamp fetches the server's schema, so the query editor highlights your query and completes fields as you type. Variables go in a JSON editor below the query.
Open a connection, send messages, and read the replies in one log as they arrive. The log keeps what you sent and what came back in order, with the time of each message.
Send a plain HTTP request, and when the server answers with an event stream, the body tab turns into a list of events. Each one shows its time, event name, id and data, with JSON pretty-printed.
Load services through server reflection, or from your .proto files when reflection is off. Pick a method, write the message as JSON, and read the status, headers and trailers of the reply.
Load a WSDL from a URL or a file and pick an operation. Codestamp fills the SOAP version, the SOAPAction and a sample envelope, and never overwrites text you already typed. A SOAP Fault shows as its own error.
Connect to an MCP server over STDIO or Streamable HTTP, browse its tools, prompts and resources, and run a tool with JSON arguments. The Messages tab shows the JSON-RPC log.
There is no Codestamp server and no account. Each request is a file in a repository your team already has, and signing in stays with Git's credential manager.
AYour edit
BTeammate's edit
Merged No conflict
Codestamp writes every request as its own file in a repository your team already has. Sync, conflicts and version history run on Git.
Two people who edit different parts of one request do not get a conflict. When both change the same field, Codestamp shows it as a conflict to resolve.
Values only part of the team may see go into an access group. The repository holds only their ciphertext, readable by the people you choose.
{{token}}, not the value you sentThe parts of an API client you use between requests, all in the same app and all working offline.
Bring your Postman collections and the specs you already have, and take them back out when you need to.
In
Out
Turn a request into code in 15 languages and tools. Secrets are read from environment variables by default, so the snippet is safe to paste.
Run a whole collection in order, once per row of a CSV or JSON data file.
Flows pass values from one request to the next, drawn as a step map.
Saved examples answer on 127.0.0.1, with a log of every request and the example that answered it.
Pre-request and test scripts with a Postman-style pm.* API, run in a QuickJS sandbox without file or process access.
Basic, Bearer, API key, Digest, AWS Signature V4 and OAuth 2.0, including authorization code with PKCE.
Keep collections, environments, flows and cookies apart per team or client, each with its own icon.
Light, Dark and Dark Night redefine the same colors, so every screen follows.
Hides the sidebar and the other cards, and can hide secrets on screen. Esc brings everything back.
codestamp-cli runs the HTTP and GraphQL requests of a collection in notebook order, with their scripts and tests. It uses an in-memory database for the run, so it never reads or changes the app's data.
--var NAME reads the value from the process environment, so CI secrets stay off the command line.--junit and --json write reports. --data file.csv runs once per row, and --bail stops at the first failure.0 when everything passes, 1 when something fails, 2 when the run could not start.With a Postman environment and a JUnit report
codestamp-cli run ./collection-folder --environment staging.postman_environment.json --var API_TOKEN --junit report.xmlOnce per row of a data file, stop at the first failure
codestamp-cli run ./shop --data orders.csv --bail --json report.jsoncodestamp-cli run ./shop --junit report.xmlExit code 1Failed test: status is 200
Requests 3 · 2 passed · 1 failed · 0 skipped
JUnit report: report.xml
For Windows 10 and 11 and for Debian-based Linux, both x64. Your data stays in a folder on your own machine.
An installer for your user account. It needs no administrator rights.
Codestamp_0.5.0_x64-setup.exe from GitHub Releases.The installer is signed with a self-signed certificate for now, so SmartScreen may say “Windows protected your PC”. Choose More info, then Run anyway.
Data folder: %APPDATA%\dev.codestamp.desktop
Also Linux Mint, Pop!_OS and other distributions built on them. Add the repository once; later versions arrive with sudo apt upgrade.
Trust the key that signs the repository
wget -qO- https://oneshield7.github.io/codestamp/apt/codestamp.gpg | sudo tee /usr/share/keyrings/codestamp.gpg > /dev/nullAdd the repository
echo "deb [arch=amd64 signed-by=/usr/share/keyrings/codestamp.gpg] https://oneshield7.github.io/codestamp/apt stable main" | sudo tee /etc/apt/sources.list.d/codestamp.listInstall Codestamp and codestamp-cli
sudo apt update && sudo apt install codestampSecret values use a key in the system keyring, so GNOME Keyring, KWallet or another keyring needs to be running. Desktop editions start one when you sign in.
Data folder: ~/.local/share/dev.codestamp.desktop
macOSPlanned. There is no macOS build yet.
Codestamp imports Postman Collection v2.0 and v2.1 files with their environments, and exports back to v2.1 when you need it.