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(LICENSE) (https://github.com/tunr-dev/tunr/blob/main/LICENSE) LICENSE        (LICENSE) (https://github.com/tunr-dev/tunr/blob/main/LICENSE) LICENSE              (Makefile) (https://github.com/tunr-dev/tunr/blob/main/Makefile) Makefile        (Makefile) (https://github.com/tunr-dev/tunr/blob/main/Makefile) Makefile              (NOTICE) (https://github.com/tunr-dev/tunr/blob/main/NOTICE) NOTICE        (NOTICE) (https://github.com/tunr-dev/tunr/blob/main/NOTICE) NOTICE              (README.md) (https://github.com/tunr-dev/tunr/blob/main/README.md) README.md        (README.md) (https://github.com/tunr-dev/tunr/blob/main/README.md) README.md              (SECURITY.md) (https://github.com/tunr-dev/tunr/blob/main/SECURITY.md) SECURITY.md        (SECURITY.md) (https://github.com/tunr-dev/tunr/blob/main/SECURITY.md) SECURITY.md              (docker-compose.runner.yml) (https://github.com/tunr-dev/tunr/blob/main/docker-compose.runner.yml) docker-compose.runner.yml        (docker-compose.runner.yml) (https://github.com/tunr-dev/tunr/blob/main/docker-compose.runner.yml) docker-compose.runner.yml              (docker-compose.yml) (https://github.com/tunr-dev/tunr/blob/main/docker-compose.yml) docker-compose.yml        (docker-compose.yml) (https://github.com/tunr-dev/tunr/blob/main/docker-compose.yml) docker-compose.yml              (go.mod) (https://github.com/tunr-dev/tunr/blob/main/go.mod) go.mod        (go.mod) (https://github.com/tunr-dev/tunr/blob/main/go.mod) go.mod              (go.sum) (https://github.com/tunr-dev/tunr/blob/main/go.sum) go.sum        (go.sum) (https://github.com/tunr-dev/tunr/blob/main/go.sum) go.sum              (install.sh) (https://github.com/tunr-dev/tunr/blob/main/install.sh) install.sh        (install.sh) (https://github.com/tunr-dev/tunr/blob/main/install.sh) install.sh            View all files        Repository files navigation  (tunr.html#)    README   (tunr.html#)    Code of conduct   (tunr.html#)    Contributing   (tunr.html#)    Apache-2.0 license   (tunr.html#)    Security     Moreitems               (tunr)    Ship the apps your agent builds. One command — or one MCP call — and the thing Claude Code just wrote stops living on localhost . (https://github.com/tunr-dev/tunr/releases) (Release)  (https://github.com/tunr-dev/tunr/blob/main/LICENSE) (CLI: Apache 2.0)  (https://github.com/tunr-dev/tunr/blob/main/relay/LICENSE) (Relay: PolyForm Shield)  (https://github.com/tunr-dev/tunr/blob/main/go.mod) (Go Version)  (https://github.com/tunr-dev/tunr/actions/workflows/ci.yml) (CI)  (https://github.com/tunr-dev/tunr/stargazers) (Stars)   (https://tunr.sh) tunr.sh · (https://tunr.sh/docs/) Docs · (https://app.tunr.sh) Dashboard · (https://github.com/tunr-dev/tunr/discussions) Discussions · (https://github.com/tunr-dev/tunr/blob/main/docs/CONTRIBUTING.md) Contributing   (https://github.com/tunr-dev/tunr/blob/main/assets/demo.gif) (An agent calls tunr_deploy; the build streams and the app goes live at https://standup.tunr.sh)   $ tunr deploy --name sprint
  ▲ Uploading 41 files, 210 KB
  ▲ building (nixpacks auto-detect)
  🚀 Live: https://sprint.tunr.sh
     (sleeps when idle, wakes on request)  Or don't type anything — tell your agent: "deploy this to tunr"   …and it calls tunr_deploy over MCP and hands you back the URL. Why (tunr.html#why)     Coding agents produce a lot of small software: the internal dashboard, the
one-off scraper, the tool that does exactly one annoying thing for your team.
Almost all of it dies on localhost , because the gap between "it works on my
machine" and "my colleague can open it" is still an afternoon of Dockerfiles,
DNS and IAM. tunr closes that gap to one command. The app builds with Nixpacks (no
Dockerfile), gets an HTTPS URL, sleeps when nobody's using it and wakes on the
next request — so hosting a dozen barely-used internal tools costs about what
hosting one does. The 3-second tunnel tunr started as is still here, still free — and it's the
safest way to demo work-in-progress to a client: read-only mode, crash
protection and a feedback button, one flag each ((tunr.html#client-demos--for-freelancers-and-vibecoders) Client demos ). Install (tunr.html#install)     # macOS / Linux — Homebrew brew install tunr-dev/tap/tunr # macOS / Linux — install script curl -fsSL https://raw.githubusercontent.com/tunr-dev/tunr/main/install.sh | sh # Go go install github.com/tunr-dev/tunr/cmd/tunr@latest # From source git clone https://github.com/tunr-dev/tunr.git && cd tunr && make build  A single static binary. macOS, Linux and Windows, amd64 and arm64, no runtime
dependencies. Verify it with tunr doctor . SDKs — for driving tunnels from code rather than the shell: pip install tunr # Python npm install @tunr/cli # Node.js   Cloud — deploy & host (tunr.html#cloud--deploy--host)     tunr login # magic-link, token goes to your OS keychain tunr deploy --name my-app # build + run; prints the live URL tunr apps # list your apps tunr apps logs my-app --follow # stream build + runtime logs tunr apps delete my-app # remove it, free the subdomain       Build  Nixpacks auto-detect — Node, Python, Go, Ruby, Rust, PHP, Java. A Dockerfile is used if present.  Isolation  Every app runs in its own gVisor sandbox with CPU, memory and disk quotas.  Scale to zero  Idle → paused with its memory reclaimed (~20 MB resident), then stopped. Wake p50 is ~150 ms.  Secrets  .env files are never uploaded. Pass them with --env KEY=VALUE .  Stays up  Close your laptop. The app keeps serving.     tunr deploy --name sprint --port 3000 --env DATABASE_URL=postgres://…  Status: preview. Deploy works end to end and is what the MCP tools drive.
Role-based sharing, per-app SQLite and tunr rollback are not built yet —
see (tunr.html#roadmap) Roadmap for what's real and what isn't.  Agent-native (MCP) (tunr.html#agent-native-mcp)     The CLI and the MCP server are two faces of the same control plane. Anything
you can do in a terminal, your agent can do in a tool call. Claude Code:  claude mcp add tunr -- tunr mcp  Claude Desktop (~/.claude/claude_desktop_config.json ) / Cursor (.cursor/mcp.json ): { "mcpServers" : { "tunr" : { "command" : " tunr"  , "args" : [" mcp"  ] }
  }
}  Tools (tunr.html#tools)     Tool What it does   tunr_deploy  Build & host a directory on the tunr cloud, return the live URL  tunr_list_apps  List deployed apps with URL and status  tunr_app_logs  Read an app's build + runtime logs (for debugging a bad deploy)  tunr_delete_app  Delete an app and free its subdomain  tunr_share  Open a temporary public tunnel to a running local port  tunr_status  List active tunnels  tunr_inspect  List HTTP requests captured by a tunnel  tunr_replay  Replay a captured request against your local server  tunr_stop  Close a tunnel     tunr_deploy and tunr_share are deliberately distinct, and the tool
descriptions say so: deploy means "host this, it should outlive my laptop", share means "expose what's running on :3000 right now". Cloud tools need tunr login first. Client demos — for freelancers and vibecoders (tunr.html#client-demos--for-freelancers-and-vibecoders)     Showing a client something that still runs on your laptop? Three flags make the
free tunnel safe to hand to someone who isn't a developer. (https://github.com/tunr-dev/tunr/blob/main/assets/client-demo.gif) (tunr share with --demo, --freeze and --inject-widget: a client's delete is intercepted, a crash is hidden, feedback arrives in the terminal)   tunr share -p 3000 --demo --freeze --inject-widget --qr  Flag What the client sees What actually happens   --demo  Buttons work — "Order deleted ✓" POST /PUT /PATCH /DELETE are answered by tunr with a fake success (JSON bodies are echoed back) and never reach your app. GraphQL queries still go through. Messages the visitor sends over WebSockets are dropped. Tune it with --demo-allow / --demo-block ((https://github.com/tunr-dev/tunr/blob/main/docs/VIBECODER_FEATURES.md#--demo-safe-read-only-mode) details ).  --freeze  The page, as it was a second ago Your dev server crashed or returned a 5xx; tunr serves the last good response (X-Tunr-Freeze-Cache: HIT ) while you fix it.  --inject-widget  A 💬 Feedback button on every page Their message, page URL and screen size land in your terminal. No code changes — tunr injects it into the HTML.  --auto-login  Already signed in to a demo account tunr adds your session cookie (or Bearer … header) to every request: --auto-login "session=demo-token" .  --qr · --password · --ttl 1h  A QR code to open it on their phone; a password; a link that expires Access control that takes one flag each.     Tunnels (tunr.html#tunnels)     Still free, still unlimited, still 3 seconds. tunr share --port 3000 # 🚀 https://abc1x2y3.tunr.sh   HTTP/HTTPS with WebSocket (HMR works), plus experimental raw TCP , UDP and TLS tunnels — all multiplexed over one connection.
Traffic is served from a single EU relay today; more regions are planned. Access control — password, bearer token, IP whitelist, TTL, QR # Basic auth (user optional) tunr share -p 8080 --password " secret"  tunr share -p 8080 --password " client:secret"  # Bearer token — Authorization: Bearer <token> or ?token=<token> tunr share -p 3000 --auth-token " my-super-secret-key"  # IP whitelist (CIDR) tunr share -p 3000 --allow-ip " 203.0.113.0/24"  tunr share -p 3000 --allow-ip " 10.0.0.0/8,172.16.0.0/12"  # Auto-expire — the tunnel closes itself tunr share -p 3000 --ttl 1h30m # QR code, for opening it on a phone tunr share -p 3000 --qr   Routing & headers — path routing, regions, header rewriting, CORS, proxies # Path routing — one public URL, several local ports tunr share --route /=3000 --route /api=8080 # Region hint — accepted today, takes effect once more regions launch # (tunr currently runs a single relay in the EU) tunr share --port 3000 --region ams # Header rewriting tunr share -p 3000 --header-add " X-Debug: true"  tunr share -p 3000 --header-replace " Host: internal.local"  tunr share -p 3000 --header-remove " X-Powered-By"  # Forwarded headers — X-Forwarded-For (real client IP), X-Original-URL tunr share -p 3000 --x-forwarded-for --original-url # CORS preflight without touching your server tunr share -p 3000 --cors-origin " https://myapp.com"  # Behind a corporate proxy tunr share -p 3000 --proxy http://proxy:8080 # Custom domain (Pro) tunr share -p 3000 --domain demo.client.com   TCP / UDP / TLS — experimental raw tunnels tunr tcp --port 5432
tunr udp --port 53
tunr tls --port 8443 # a local TLS port over the same raw transport   Experimental, and narrower than the names suggest. The relay exposes a raw
tunnel only as a WebSocket stream at wss://<subdomain>.tunr.sh/tunnel/tcp (binary frames carry the bytes). There is no raw TCP/UDP port on the relay yet,
so psql , ssh or a game client can't connect directly — you need a client
that speaks that WebSocket. tunr tls is not SNI passthrough: the relay
terminates TLS for *.tunr.sh . --allow-ip isn't enforced on raw tunnels, so
it returns an error rather than silently leaving the port open.  Daemon, service & multi-tunnel  # Background daemon tunr start --port 3000
tunr status
tunr stop # Several tunnels from .tunr.json tunr up
tunr down # Install as a system service (systemd / launchd) — starts on boot tunr service install --port 3000
tunr service status
tunr service uninstall   Inspect & replay — the local HTTP inspector tunr open # dashboard at http://localhost:19842 tunr logs --follow # stream requests in the terminal tunr replay < id> # re-send a captured request to your local server   Live request/response stream, headers, body, timing, one-click replay, export
as a curl command. Everything stays on your machine.  Full CLI reference  Command Description   Cloud    tunr deploy [dir]  Build & host a project; --name , --port , --env KEY=VAL   tunr apps  List your cloud apps  tunr apps logs <name>  Stream logs; --follow , --tail N   tunr apps delete <name>  Delete an app  Tunnels    tunr share -p PORT  Expose a local port over HTTPS  tunr share -p PORT -s NAME  Custom subdomain (Pro)  tunr share --route /PATH=PORT  Map URL paths to local ports  tunr share -p PORT --password PASS  Basic authentication  tunr share -p PORT --ttl 1h  Auto-close after a duration  tunr share -p PORT --demo  Read-only demo mode  tunr share -p PORT --freeze  Serve last-good response on crash  tunr share -p PORT --inject-widget  Inject the feedback widget  tunr share -p PORT --auto-login "Cookie: s=demo"  Auto-inject an auth cookie  tunr share -p PORT --domain HOST  Custom domain  tunr share -p PORT --qr  Print a QR code for the URL  tunr share -p PORT --auth-token TOKEN  Bearer token protection  tunr share -p PORT --allow-ip CIDR  IP whitelist  tunr share -p PORT --header-add/-replace/-remove  Rewrite headers  tunr share -p PORT --x-forwarded-for --original-url  Proxy headers  tunr share -p PORT --cors-origin ORIGIN  CORS preflight  tunr share -p PORT --proxy URL  HTTP/SOCKS5 proxy  tunr share -p PORT --region ams  Relay region hint (single EU relay today)  tunr share -p PORT --json  JSON output for CI  tunr tcp -p PORT / tunr udp -p PORT / tunr tls -p PORT  Raw tunnels over WebSocket (experimental)  tunr up / tunr down  Start/stop everything in .tunr.json   tunr start / tunr stop / tunr status  Daemon mode  tunr service install|status|uninstall  System service  Everything else    tunr login / tunr logout  Authentication  tunr open / tunr logs / tunr replay <id>  Inspector  tunr mcp  Start the MCP server (stdio)  tunr config init / tunr config show  .tunr.json   tunr doctor  Diagnose your setup  tunr update / tunr uninstall / tunr version  Maintenance     Global flags: --relay URL (point at your own relay), --verbose .  SDKs (tunr.html#sdks)     Python — pip install tunr  from tunr import TunrClient , TunnelOptions client = TunrClient () tunnel = client .share (port = 3000 ) print (tunnel .public_url ) db_tunnel = client .tcp (port = 5432 ) dns_tunnel = client .udp (port = 53 ) tls_tunnel = client .tls (port = 8443 ) opts = TunnelOptions ( subdomain = "myapp" , password = "demo123" , allow_ips = ["10.0.0.0/8" ], freeze = True , inject_widget = True , proxy = "http://proxy:8080" , ttl = "2h" ,
) tunnel = client .share (port = 8080 , opts = opts ) requests = client .get_requests (tunnel .subdomain ) client .replay_request (tunnel .subdomain , requests [0 ]["id" ], port = 3000 ) metrics = client .get_metrics () # Prometheus text health = client .health_check () # {"status": "ok"} tunnel .close ()   Node.js — npm install @tunr/cli  import { TunrClient } from '@tunr/cli' const client = new TunrClient ( ) const tunnel = await client . share ( 3000 ) console . log ( tunnel . publicUrl ) const dbTunnel = await client . tcp ( 5432 ) const dnsTunnel = await client . udp ( 53 ) const tlsTunnel = await client . tls ( 8443 ) const appTunnel = await client . share ( 8080 , { subdomain : 'myapp' , password : 'demo123' , allowIps : [ '10.0.0.0/8' ] , freeze : true , injectWidget : true , proxy : 'http://proxy:8080' , ttl : '2h' , } ) tunnel . on ( 'ready' , ( ) => console . log ( 'Tunnel live' ) ) tunnel . on ( 'error' , ( err ) => console . error ( err ) ) tunnel . on ( 'exit' , ( ) => console . log ( 'Tunnel closed' ) ) const requests = await client . getRequests ( 'myapp' ) await client . replayRequest ( 'myapp' , requests [ 0 ] . id , 3000 ) await tunnel . close ( )    Configuration (.tunr.json ) (tunr.html#configuration-tunrjson)     tunr config init  { "$schema" : " https://tunr.sh/schema/.tunr.schema.json"  , "port" : 3000 , "inspectorEnabled" : true , "dashboardPort" : 19842 , "mcp" : { "enabled" : true }
}  Architecture (tunr.html#architecture)     Browser ──▶ relay.tunr.sh ──┬── [WebSocket] ──▶ tunr CLI ──▶ localhost:PORT   (tunnel)
                            │
                            └── control plane ──▶ tunr-runner ──▶ gVisor sandbox   (cloud app)
                                     │
                                Postgres + route cache    Tunnels. The CLI starts a local proxy with an embedded inspector and opens
one WebSocket to the relay. The relay issues a *.tunr.sh subdomain and
terminates HTTPS. HTTP, WebSocket, TCP, UDP and TLS all multiplex over that
single connection — a typed message discriminator routes them. Cloud. tunr deploy uploads a tarball to the control plane, which hands it
to tunr-runner . The runner builds with Nixpacks and runs the result in a
gVisor sandbox with cgroup quotas. The relay routes the subdomain straight at
the container, waking it if it's asleep. Scale to zero. Apps move HOT → WARM → STOPPED on an idle timer. WARM is a
cgroup memory reclaim followed by a pause, which cuts real memory cost by ~55%
while keeping wake latency around 150 ms. Health-check probes are answered at
the edge so a monitored app can still fall asleep; search crawlers get the real
page but can't keep the app awake. Observability. Prometheus metrics at /metrics , K8s probes at /healthz and /readyz on the inspector port. Self-hosting. docker-compose.yml runs the tunnel stack (relay + Caddy +
Postgres); docker-compose.runner.yml adds the cloud runner. Point the CLI at
it with --relay https://tunnel.yourcompany.com or TUNR_RELAY_URL . See (https://github.com/tunr-dev/tunr/blob/main/docs/SELF_HOSTING.md) docs/SELF_HOSTING.md . Security (tunr.html#security)     Auth tokens live in the OS keychain , never in a dotfile All relay traffic over TLS 1.3 . HTTP tunnels terminate TLS at the relay, like any hosted tunnel; self-host the relay (--relay ) if that matters to you Cloud apps run under gVisor , not bare containers .env files are excluded from deploy uploads by default The CLI ships no telemetry, no analytics, no phone-home Supply chain: go mod verify + govulncheck in CI, cosign-signed checksums  Found a vulnerability? Don't open a public issue — see (https://github.com/tunr-dev/tunr/blob/main/SECURITY.md) SECURITY.md . Roadmap (tunr.html#roadmap)     Honest status. "Preview" means it works but the edges are sharp; "planned"
means there is no code yet.  Status   HTTP/WS, TCP, UDP, TLS tunnels ✅ Stable  Demo features (freeze, demo, widget, auto-login) ✅ Stable  Access control (password, token, IP, TTL) ✅ Stable  Inspector + replay, Prometheus, service install ✅ Stable  Python / Node SDKs ✅ Stable  Self-hosted tunnel relay ✅ Stable  tunr deploy + tunr apps + logs (v0.6.1+) 🚧 Preview  MCP cloud tools (tunr_deploy , tunr_app_logs , …) (v0.6.1+) 🚧 Preview  Scale-to-zero (sleep/wake) 🚧 Preview  Self-hosted cloud runner 🚧 Preview  Role-based sharing (viewer/commenter/editor, --org acme.com ) 📋 Planned  Per-app SQLite + snapshots 📋 Planned  tunr rollback (code and data) 📋 Planned  Multi-region relay (--region is accepted; one EU relay today) 📋 Planned  Persistent TCP/UDP ports 📋 Backlog  GUI desktop app 📋 Backlog     Comparing tunr's tunnel against ngrok, Cloudflare Tunnel, LocalXpose and
localtunnel: (https://github.com/tunr-dev/tunr/blob/main/docs/compare-tunnels.md) docs/compare-tunnels.md . Contributing (tunr.html#contributing)     Contributions are welcome — read (https://github.com/tunr-dev/tunr/blob/main/docs/CONTRIBUTING.md) CONTRIBUTING.md first.
Good places to start are issues labelled (https://github.com/tunr-dev/tunr/labels/good%20first%20issue) good first issue  and (https://github.com/tunr-dev/tunr/labels/help%20wanted) help wanted  . make check # vet + lint + test + govulncheck make pre-push # the above, plus a build   The relay is a separate Go module and isn't covered by the Makefile: cd relay && go build ./cmd/server && go test ./...  Community & support (tunr.html#community--support)         Bugs & feature requests (https://github.com/tunr-dev/tunr/issues) GitHub Issues   Questions & ideas (https://github.com/tunr-dev/tunr/discussions) GitHub Discussions   Security reports (https://github.com/tunr-dev/tunr/security/advisories/new) Private advisory or (mailto:dev@tunr.sh) dev@tunr.sh   Developer / contributor contact (mailto:dev@tunr.sh) dev@tunr.sh   Everything else (billing, partnerships, press) (mailto:contact@tunr.sh) contact@tunr.sh      Please follow our (https://github.com/tunr-dev/tunr/blob/main/CODE_OF_CONDUCT.md) Code of Conduct . License (tunr.html#license)     This repository is dual-licensed by directory : Path Licence    cmd/ , internal/ , sdk/ — the CLI and SDKs (https://github.com/tunr-dev/tunr/blob/main/LICENSE) Apache-2.0  OSI-approved open source. Use it, fork it, ship it commercially.  relay/ — relay, control plane, runner (https://github.com/tunr-dev/tunr/blob/main/relay/LICENSE) PolyForm Shield 1.0.0  Source-available, not open source. Read it, modify it, run your own instance — but don't use it to compete with tunr.     Running the whole stack yourself, for yourself or inside your company, is
allowed under both. See (https://github.com/tunr-dev/tunr/blob/main/NOTICE) NOTICE for the exact boundary. (https://tunr.sh) tunr.sh  · (https://tunr.sh/docs/) Docs · (https://discord.gg/tunr) Discord · (https://x.com/vural_met) Twitter/X  Built with 💜 in Go           About  Ship the apps your agent builds. One command (or one MCP call) turns localhost into a live HTTPS URL — tunnels, deploys, scale-to-zero.   (https://tunr.sh) (https://tunr.sh) tunr.sh   Topics  (https://github.com/topics/ai-agents) ai-agents (https://github.com/topics/claude-code) claude-code (https://github.com/topics/cli) cli (https://github.com/topics/deploy) deploy (https://github.com/topics/developer-tools) developer-tools (https://github.com/topics/golang) golang (https://github.com/topics/localhost) localhost (https://github.com/topics/mcp) mcp (https://github.com/topics/model-context-protocol) model-context-protocol (https://github.com/topics/ngrok-alternative) ngrok-alternative (https://github.com/topics/paas) paas (https://github.com/topics/reverse-proxy) reverse-proxy (https://github.com/topics/self-hosted) self-hosted (https://github.com/topics/tunnel) tunnel (https://github.com/topics/websocket) websocket  Resources  (tunr.html#readme-ov-file)   Readme   (tunr.html#Apache-2.0-1-ov-file)   Apache-2.0 license   Code of conduct  (tunr.html#coc-ov-file)   Code of conduct   Contributing  (tunr.html#contributing-ov-file)   Contributing   Security policy  (tunr.html#security-ov-file)   Security policy   (https://github.com/tunr-dev/tunr/activity)   Activity   (https://github.com/tunr-dev/tunr/custom-properties)   Custom properties    Stars    5 stars  Watchers    0 watching  Forks  (https://github.com/tunr-dev/tunr/forks)   0  forks     (https://github.com/contact/report-content?content_url=https%3A%2F%2Fgithub.com%2Ftunr-dev%2Ftunr&report=tunr-dev+%28user%29) Report repository    Releases     Packages    Contributors    Languages                            Footer (https://github.com)    © 2026 GitHub, Inc.   Footer navigation (https://docs.github.com/site-policy/github-terms/github-terms-of-service) Terms  (https://docs.github.com/site-policy/privacy-policies/github-privacy-statement) Privacy  (https://github.com/security) Security  (https://www.githubstatus.com/) Status  (https://github.community/) Community  (https://docs.github.com/) Docs  (https://support.github.com?tags=dotcom-footer) Contact  Manage cookies    Do not share my personal information              You can’t perform that action at this time.