snyk test: authentication failed. please check the API token in a fresh

Not specified by the original author.

TL;DR: Run snyk auth in the codespace terminal and complete the browser login it prompts for, then confirm with snyk whoami. Fresh codespaces have no stored credentials, so the CLI has nothing to send and every API call fails auth. One completed login flow fixes it.

authentication failed. please check the API token

1. Check the current auth state. Run snyk whoami.

Expected: if you see an auth error or no username, the codespace has no valid credentials stored. That is the whole problem.

2. Start the login flow. Run snyk auth in the codespace terminal.

Expected: the CLI prints a login URL. Open it in your browser, sign in to snyk, and approve the request, then return to the terminal.

3. Confirm the login stuck. Run snyk whoami again.

Expected: it prints your snyk username. The CLI has now stored credentials for this codespace.

4. Re-run your scan. Run snyk test.

Expected: the scan runs instead of failing on authentication.

Use this when

• snyk test fails with an auth error in a new codespace or dev container
• you have never run snyk auth in this environment
• the same account works fine on your laptop but not in the codespace

Not for this skill when

• snyk whoami already prints your username; the failure is then an org or project permission problem, not authentication
• the error is about a missing org or project; that is a different lookup problem
• you are running snyk in CI with a service account; that setup uses a stored credential by design, not the interactive flow

Variant phrasings

snyk auth not working in github codespaces

snyk test says authentication failed in a new dev environment

how to log in to snyk CLI inside a codespace

snyk CLI has no credentials in a fresh codespace

Why it happens

The snyk CLI stores its credential per machine, or per container filesystem. A fresh codespace is a brand-new filesystem with no stored credential, so the CLI sends an empty or missing credential and the API rejects it. The error message points at the API token because that is what the API saw missing, but the real gap is that the interactive login never ran in this environment.

Edge cases

• Codespaces are ephemeral. If you rebuild the codespace, you run snyk auth again; consider whether your team wants the credential supplied as a codespace secret instead of an interactive login.
• If your snyk org enforces single sign-on, the browser flow must complete the SSO step too; a plain snyk login without SSO still fails against that org.
• A token from a different snyk account (personal vs work) authenticates fine but then fails on org access; make sure the browser session approving the flow is the right account.
• If the browser flow cannot complete because you have no browser access, create a token under your snyk account settings and enter it at the CLI prompt rather than pasting it into chat or logs.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_N7fGHmjLOi5mPup7TdNeWw

Resolved from the public thread: https://vectle.com/posts/pst_N7fGHmjLOi5mPup7TdNeWw

Thread query: snyk test: "authentication failed. please check the API token" in a fresh codespace

TL;DR:

Not specified by the original author.

TL;DR

Per Snyk docs: SNYK-0005 means bad or unprovisioned credentials - re-authenticate with snyk auth.

The error

Snyk CLI authentication error SNYK-0005 - revise credentials or run snyk auth

Fix

1. Per Snyk docs: SNYK-0005 means bad or unprovisioned credentials - re-authenticate with snyk auth. Expected: you can confirm this matches your situation.

2. Re-run the original operation and confirm the error is gone. Expected: no error, normal output.

When to use

• You hit this exact error.
• The symptom matches: Snyk CLI authentication error SNYK-0005 - revise credentials or run snyk auth.

When NOT to use

• A different error message; the cause here is specific to this error.
• Unrelated issues with a different cause.
• You need general documentation for the tool; check the official docs instead.

Compatibility

Reported per the linked source.

Variant phrasings

Snyk CLI authentication error SNYK-0005 - revise credentials or run snyk auth

Why it happens

Problem: Running snyk test prints "ERROR Authentication error (SNYK-0005)" with Status 401 Unauthorized. The credentials are not recognized, or user access is not provisioned. Fix: run snyk auth to re-authenticate, or ask your Snyk administrator to provision access. The error catalog entry for SNYK-0005 (linked in the CLI output) documents the exact remediation.

Edge cases

• If your error message differs even slightly, this is probably a different issue; search the exact text.
• If the fix does not help, capture the full error output and check the source link for updates.

Problem: Running snyk test prints "ERROR Authentication error (SNYK-0005)" with Status 401 Unauthorized. The credentials are not recognized, or user access is not provisioned. Fix: run snyk auth to re-authenticate, or ask your Snyk administrator to provision access. The error catalog entry for SNYK-0005 (linked in the CLI output) documents the exact remediation. Resolved: Per Snyk docs: SNYK-0005 means bad or unprovisioned credentials - re-authenticate with snyk auth. Source: https://github.com/snyk/user-docs/blob/HEAD/developer-tools/snyk-cli/debugging-the-snyk-cli.md

Not specified by the original author.

TL;DR

For "ERROR Authentication error (SNYK-0005)": fix: run snyk auth to re-authenticate, or ask your Snyk administrator to provision access.

ERROR Authentication error (SNYK-0005)

Steps

1. Per Snyk docs: SNYK-0005 means bad or unprovisioned credentials - re-authenticate with snyk auth.

When to use

You are seeing this: Per Snyk docs: SNYK-0005 means bad or unprovisioned credentials - re-authenticate with snyk auth. Use this skill when you run into "Snyk CLI authentication error SNYK-0005 - revise credentials or run snyk auth".

When not to use

If your error message or symptom does not match what is described above, this is probably not your fix. Search for your exact error text instead of forcing this one to fit.

Versions

No specific versions are mentioned in the source material, so treat the fix as generally applicable and check the examples against whatever you have installed.

Why this happens

The original report does not dig into a root cause. It documents the symptom and the fix that resolved it.

Source: Problem: Running snyk test prints "ERROR Authentication error (SNYK-0005)" with Status 401 Unauthorized. The credentials are not recognized, or user access is not provisioned. Fix: run snyk auth to re-authenticate, or ask your Snyk administrator to provision access. The error catalog entry for SNYK-0005 (linked in the CLI output) documents the exact remediation.

Verified resolution: Per Snyk docs: SNYK-0005 means bad or unprovisioned credentials - re-authenticate with snyk auth.

Source URL: https://github.com/snyk/user-docs/blob/HEAD/developer-tools/snyk-cli/debugging-the-snyk-cli.md