Tachyon CLI

Use this skill when inspecting Tachyon Platform state through the local tachyon CLI.

Core Rules

• Run the real CLI command when the user asks to check logs or build status.
• Treat tokens, API keys, auth headers, Cloudflare tokens, and generated secrets in logs as secrets.
• Do not echo secret values back to the user. Redact them in summaries.
• Prefer exact app IDs, build IDs, tenant IDs, PR URLs, and Linear/GitHub issue context already provided by the user.
• If the user provides a Cloud App URL or GitHub check URL, extract the app ID / tenant ID from it and start there.
• Do not assume the active profile tenant is correct. Use the explicit tenant from the issue, URL, or app metadata when available.
• If a command refreshes the token, do not mention the token value; it is fine to say the CLI refreshed auth successfully.

Quick Orientation

Check the installed CLI and auth profile:

command -v tachyon
tachyon --help
tachyon auth list

Cloud Apps live under compute:

tachyon compute --help
tachyon compute apps --help
tachyon compute builds --help
tachyon compute logs --help

Build Status Workflow

1. Identify the target.

• App ID example: app_01km2dr0f6hvgj0qvcteyydfbe
• Build ID example: bld_01kqrqg6wa2b1nbarw5efbh0rz
• Tenant ID example: tn_01hjjn348rn3t49zz6hvmfq67p

1. List builds for the app:

tachyon compute builds list <app_id_or_name> --tenant-id <tenant_id>

1. Fetch latest logs:

tachyon compute logs <app_id_or_name> --tenant-id <tenant_id>

1. Fetch a specific build log:

tachyon compute logs --build-id <build_id> --tenant-id <tenant_id>

1. Follow a running build:

tachyon compute logs <app_id_or_name> --tenant-id <tenant_id> --follow

What To Report

Summarize high-signal facts:

• Latest build ID, status, branch, commit, and created time.
• Whether the failure mode is still present or fixed.
• Install command path used, especially Yarn v1 vs Yarn v2+ behavior.
• Build command and whether it reached BUILD State: SUCCEEDED.
• Deploy command and deployment URL if present.
• Callback result, for example Build <id> completed successfully.

Do not paste full raw logs unless the user explicitly asks. Even then, redact secrets.

Redaction

Before quoting or summarizing logs, redact patterns like:

• CLOUDFLARE_API_TOKEN=...
• TACHYON_AUTH_TOKEN=...
• Authorization: Bearer ...
• --auth-token ...
• API keys, client secrets, GitHub tokens, AWS secrets, and signed URLs

Prefer summaries like:

CLOUDFLARE_API_TOKEN=<redacted>
TACHYON_AUTH_TOKEN=<redacted>

Common Cloud Apps Checks

For Vite/Yarn v1 workspace build fixes, look for:

• Installing Yarn v1 workspace dependencies from <workspace root>
• yarn install --frozen-lockfile
• Absence of yarn workspaces focus under Yarn v1
• npm run build
• vite build
• pages_build_output_dir = "dist"
• wrangler pages deploy dist
• Deployment complete!
• callback completed successfully

For old broken Vite paths, look for:

• yarn workspaces focus running under Yarn v1
• .vercel/output/static being used for Vite output
• missing dist
• failed wrangler pages deploy

Final Response

Keep the answer short and operational:

• Say whether the target is actually passing or failing now.
• Include the latest successful or failed build ID.
• Include the exact command family used.
• Call out any residual risk, such as GitHub PR status checks still showing an older failed build even though newer CLI builds succeeded.