Ranked recommendations from structured capability data.
Not training-data recall — a search across machine-readable capability manifests, returned ranked with integration effort and a one-line solves.
Starlog searches a corpus of structured capability manifests generated by an LLM reading each library's source and docs — not scraped from READMEs. Results are returned ranked, each with a one-line solves and an integration-effort label.

$agent “add authentication”
→ writing lib/auth/jwt.ts (147 lines)
→ writing lib/auth/bcrypt.ts (43 lines)
→ writing lib/auth/session.ts (88 lines)
× 278 lines of custom auth
× no MFA, no OAuth, no breach recovery
$agent “add authentication”
→ starlog_search(“auth”, stack=“next.js”)
Fully managed authentication and user management with pre-built UI components.
User authentication via Auth0 — login, logout, session management, route protection.
→ npm install @clerk/nextjs
✓ managed auth + pre-built UI. no custom JWT code.
solvesis the manifest's one-line statement of what the library does — stored data, not model recall. Integration effort is a stored label on each manifest — how much work to adopt it — from drop-in to major.
Every dependency decision is this same fork.
5 matches in the index for “auth for nextjs”
Provides a fully managed authentication and user management platform with pre-built UI components for sign-up, sign-in, and profile management, eliminating the need to build auth infrastructure from scratch.
Implements user authentication in Next.js applications using Auth0 as the identity provider, handling login, logout, session management, token refresh, and middleware-based route protection with encrypted cookie-based sessions.
Provides a declarative JavaScript SDK for integrating Amazon Cognito authentication into frontend and mobile applications, handling sign-up, sign-in, MFA, OAuth/social login, and session management within the AWS ecosystem.
Provides client-side authentication for web and mobile apps using Firebase's managed identity platform, supporting email/password, phone, anonymous sign-in, and federated identity providers (Google, Facebook, Apple, etc.) with no backend auth infrastructure to maintain.
Provides a complete open-source authentication and user management backend with passkey-first support, passwords, MFA, OAuth SSO, SAML Enterprise SSO, and pre-built web components for login/registration UI, serving as a self-hostable alternative to Auth0, Clerk, and Stytch.
Real responses from the Starlog index — captured 2026-06-01.
Pick any capability — it's the same fork. In our benchmark, the agent reached for Starlog on every dependency decision.
starlog search "auth for Next.js" --category authentication --top-k 3Ranking: keyword ranking is the default and works offline — no key, no account. Semantic ranking is the optional, experimental mode: semantic (LLM) ranking needs a key — starlog init --api-key <key>. Results vary. get a key →