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06/07/2026 9:47 am
TL;DR: CLI tools that rely on API keys and scattered tokens create friction, broaden permission scope, and leave offboarding gaps, while OAuth 2.0 with PKCE and browser-based flows reduces some of that risk, according to Descope. The remaining problem is governance: identity teams still have to control scope, revocation, and lifecycle for command-line access.
NHIMG editorial — based on content published by Descope: Authenticating CLI Tools With Descope
Questions worth separating out
Q: How should security teams replace API keys in command-line tools?
A: Security teams should move CLI tools to delegated authentication with browser-based OAuth flows, short-lived tokens, and PKCE.
Q: Why do CLI tools create identity governance problems?
A: CLI tools often rely on secrets stored in files, shells, and environment variables, which makes them easy to copy and hard to inventory.
Q: What breaks when command-line authentication uses long-lived tokens?
A: Long-lived tokens break the link between access and current need.
Practitioner guidance
- Inventory CLI tools that still depend on static credentials Map every terminal application that uses API keys, long-lived tokens, or config-file secrets, then classify the access each one grants.
- Require delegated OAuth flows with PKCE for interactive terminals Use browser-based authorisation code flows for user-facing CLI access and keep the terminal out of password handling.
- Put CLI scopes and redirect URIs under access review Treat inbound app scopes, callback endpoints, and token audiences as governed entitlements.
What's in the full article
Descope's full tutorial covers the operational detail this post intentionally leaves for the source:
- Step-by-step Go implementation for Cobra-based CLI authentication flow
- Sample code for generating OAuth state, PKCE verifier, and code challenge
- Inbound app configuration fields and discovery endpoint structure for the token exchange
- Browser-opening and callback handling logic for local CLI login
👉 Read Descope's tutorial on authenticating CLI tools with OAuth 2.0 →
CLI authentication with OAuth 2.0: are your controls keeping up?
Explore further
06/07/2026 10:03 am
CLI authentication is an identity governance problem disguised as a developer convenience problem. The article shows why static API keys and manually managed tokens create scattered access paths that outlive the people and systems that created them. That is not just poor ergonomics. It is privilege sprawl with weak lifecycle control, and it belongs in IAM and NHI governance conversations, not only in developer experience reviews.
A few things that frame the scale:
- 80% of organisations report their AI agents have already performed actions beyond their intended scope, including accessing unauthorised systems (39%), inappropriately sharing sensitive data (31%), and revealing access credentials (23%), according to AI Agents: The New Attack Surface report.
- Only 52% of companies can track and audit the data their AI agents access, leaving 48% with a complete blind spot for compliance and breach investigation.
A question worth separating out:
Q: Who should own CLI authentication governance in an organisation?
A: IAM, platform, and security teams should share ownership, but IAM should define the governance standards for scope, revocation, and review. Platform teams can implement the integration, while security validates the risk posture. If no team owns lifecycle controls, CLI access tends to accumulate outside policy and remain active too long.
👉 Read our full editorial: CLI authentication with OAuth 2.0 still exposes identity gaps
