tc-tui

A terminal UI for Taskcluster, Mozilla's CI/task execution platform. Browse and act on Taskcluster entities — worker pools, workers, tasks, task groups, artifacts, roles, clients, secrets, hooks, GitHub builds and more — without leaving the terminal. Navigation is command-bar driven, in the spirit of vim/k9s.

Install

Requires Go 1.26.5+.

go install github.com/taskcluster/tc-tui@latest

This installs tc-tui into $GOBIN (or $GOPATH/bin when GOBIN is unset), which should be on your PATH. Once versioned releases are available, replace @latest with a tag such as @v1.0.0 to install a specific release.

To build or run the current checkout instead:

go build .                 # produces ./tc-tui
go run .

Run

tc-tui needs TASKCLUSTER_ROOT_URL set — it panics on startup otherwise, since the Taskcluster client SDK is initialized via NewFromEnv():

export TASKCLUSTER_ROOT_URL=https://community-tc.services.mozilla.com/
go run .

Optional credential env vars (TASKCLUSTER_CLIENT_ID, TASKCLUSTER_ACCESS_TOKEN, etc.) enable authenticated calls (creating tasks, viewing secrets, ...). Without them the app runs anonymously — most read-only resources on public instances (like community-tc) are still browsable.

You can jump straight to a view instead of the default/last session by passing positional args, the same way :name scope would in the command bar:

tc-tui                              # resume the last session (or the command palette)
tc-tui wp proj-taskcluster/ci       # open that worker pool directly
tc-tui pending proj-taskcluster/ci  # open its pending tasks
tc-tui task <taskId>                # open a task directly
tc-tui --help                       # full key + resource reference (no root URL needed)
tc-tui --version                    # client version and build hash

The view stack is persisted across restarts, so tc-tui reopens wherever you left off.

Usage

Open the command bar with : and type a resource name or alias (:wp, :workers <poolId>, :task <id>, :help, :quit), or press Ctrl-A to pick from a filterable list of everything available. Move with j/k or the arrows, Enter to drill in, Esc to go back.

Key	Action
:	command bar — switch resource, e.g. :workerpools, :wp, :workers <poolId>, :quit
Ctrl-A	command palette — every command and its aliases (resources plus help/quit) as a filterable list; Enter runs the selected one (also :commands)
/	filter the current list's rows, or a detail body's lines (including a live-streaming log), highlighting the match
1-9	sort the current list by that column, numbered left to right (press again to reverse)
Tab / Shift+Tab	cycle the facet tab bar, for resources that have one (e.g. worker pools by provider, workers by state)
j/k, arrows	move selection / scroll
Enter	drill into the selected row
r	refresh the current view, bypassing the cache
x	on a list, toggle column truncation (then ←/→ to scroll columns); on a detail, toggle word-wrap
n	on a detail view, toggle a vim-like line-number gutter
v	on a detail view that masks its content by default (a secret's values), reveal it in the clear; press again to hide. Lasts for that visit only, and revealed content is never cached
L	load ALL rows of a truncated list (large lists fetch ~1000 rows up front, shown as N+ in the title)
o	open the current view in Taskcluster's web UI, if it has one
s	save the current view's content to a local file, if supported (e.g. an artifact)
Esc	go back
?	toggle the in-app help screen (full, always-up-to-date resource/key reference)
q	quit (also :quit / :q)

In the footer input (command bar, filter, id prompt), Up/Down cycle through previously entered values, scoped separately per input kind.

Detail views expose their own context keys as header hints — e.g. a task offers E rerun, T retrigger, plus cancel/priority actions, l live log, a artifacts, R runs, D dependents; a worker pool offers w workers, p pending, c claimed, l launch configs, e errors, P purge cache.

Resources

Addressed by name or alias in the command bar. Press ? inside the app for the full list with each resource's columns and required scope, or Ctrl-A for the same list as a filterable, selectable palette.

A scoped resource opened without its scope (:workers, or picking it from the palette) asks for one. Where a browsable parent list exists the prompt says worker pool id (blank to browse), so you can paste the id you already have or press Enter on the empty field to browse and drill down instead. Where there's nothing to browse — Taskcluster has no "list all tasks" API — the prompt just asks for the id.

Auth & secrets

• roles (role) — IAM-style roles and the scopes they grant
• clients (client) — auth clients (credentials) and their scopes
• secrets (secret) — secret names; opening one shows its keys and structure with every value masked (••••••••). Press v to reveal the values in the clear, v again to hide them. A reveal lasts for that visit only — navigating away and back shows the masked view again — and revealed content is never cached.

Hooks

• hooks (hook) — scheduled/triggered task templates across all hook groups
• hookfires (fires) — a hook's recent fires; select one to jump to its task

Worker pools & workers

• workerpools (wp, pools) — provisioning config: provider, capacity, pending/claimed/error counts (faceted by provider)
• workers (w) — individual workers in a pool (faceted by state: running/requested/stopping/stopped)
• recenttasks — a worker's recent tasks
• launchconfigs (lc, configs) — launch configurations for a pool (active/all)
• errors (err) — provisioning errors reported for a pool
• purgecache (purge, cache) — open cache-purge requests for a pool

Tasks

• task — a single task by id: definition, state, payload, runs, and rerun/retrigger/cancel/priority actions
• taskgroup (g) — tasks belonging to a task group, by id
• tasks (t) — tasks in a task group (scoped list)
• dependencies / dependents — a task's dependencies, and tasks that depend on it
• runs — a task's runs; select one, then w for its worker
• artifacts — a task's artifacts across all runs; view/stream logs or s to download
• createtask (newtask) — create a task, edited in $EDITOR
• index (idx) — browse the task index by namespace, or resolve a full index path to its task

Queue

• pending — tasks currently pending on a worker pool's task queue
• claimed — tasks currently claimed (running) on a worker pool's task queue

GitHub

• githubbuilds (builds) — a pull request's or commit's builds (org/repo/pull/<n> or org/repo/sha/<sha>)
• githubrepo (repo) — a repository's Taskcluster integration status (org/repo)

Navigation

• history (hist) — chronological log of visited resources; select a row to jump back

Screenshots

Help screen (?)

Captured live against community-tc, Mozilla's public community Taskcluster instance, running anonymously. To regenerate them, build the binary and run the capture tool (it drives tc-tui inside a pty and renders frames with pyte/Pillow):

go build .
TASKCLUSTER_ROOT_URL=https://community-tc.services.mozilla.com/ python3 scripts/screenshot.py

Architecture

Four packages, in strict dependency order — taskcluster → resource → shell → controller:

• taskcluster/ — thin wrapper around the generated Taskcluster Go clients (github.com/taskcluster/taskcluster/v101). Handles pagination and caps artifact-content fetches.
• resource/ — one file per entity type, each implementing a common Resource interface (List/Describe/Columns/Aliases/...). Optional marker interfaces opt a resource into extra shell behavior — scoped/faceted lists, direct-by-id lookup, progressive row augmentation, web links, downloads, live-log streaming. The shell is entirely generic over this interface.
• shell/ — the tview/tcell UI: table view, detail view, command bar, filter, facets, sort, help, a short-TTL list cache, an Esc-based navigation stack, and persisted UI state.
• controller/ — wires a taskcluster.Taskcluster client into a resource.Registry and starts the shell.Shell; also restores/persists navigation state.

Adding a resource is just a new resource/<name>.go (plus any new API method on the taskcluster interface) registered in controller.NewController() — the shell needs no changes. See CLAUDE.md for the full guide.

resource/ and shell/ are covered by unit tests (go test ./...); there is no CI configured for this repo currently.