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DimensionwitnessLocal memory & self-improvement engine that witnesses your growth as a developer.Context7Upstash's official server providing up-to-date third-party library docs for AI coding assistants
FMRS62 / 100 · C80 / 100 · B
Reliability10 / 2014 / 20
Security and permissions14 / 2016 / 20
Maintenance10 / 2017 / 20
Documentation16 / 2015 / 20
Setup experience12 / 2018 / 20
Best for
  • Developers who want to preserve learnings across AI coding sessions.
  • Those seeking a second brain / AI memory that their agent can query for thinking patterns.
  • Privacy-conscious users who require all data stay local.
  • People who want to track their growth as a developer over time.
  • Developers using fast-moving frameworks/libraries worried about the AI suggesting stale code
  • Scenarios wanting zero-config documentation lookup
Not for
  • Those needing project-level memory or codebase history (it focuses on the person, not the code).
  • Those needing cloud sync or multi-user collaboration (it's local-first).
  • Users unfamiliar with CLI or unwilling to run a local model download.
  • Proactive coaching expecting in-session suggestions or nudges (it's a tool, not a coach).
  • Looking up internal/private codebase documentation (Context7 targets publicly published open-source libraries)
  • Cases needing very high coverage of obscure, niche libraries (coverage depends on what Context7's platform has indexed)
Required permissions
  • Reads user prompts and assistant messages captured by Claude Code hooks.
  • Reads OpenCode's local SQLite session database.
  • Accesses local file system for storing data (default `~/.local/share/witness/`).
  • Invokes `claude -p` or a private `opencode serve` runner for distillation.
  • Usable without an API key (subject to a free-tier rate limit); CONTEXT7_API_KEY is an optional credential for higher quota
  • Read-only documentation lookup — no code execution or local filesystem access involved
Risks and side effects
  • Data is all local but requires regular backups; don't sync live data directory directly.
  • May require significant disk space as the model ~470MB and raw transcripts accumulate.
  • Uses LLM distillation which can incur compute and cost depending on runner configuration.
  • Ensure to use `witness export` for consistent snapshots for backup to avoid corruption.
  • The free tier has limited quota — high-frequency use may hit rate limits
  • Documentation content comes from Context7's platform index, so its accuracy and freshness depend on that platform's crawl cadence
Supported clientsClaude Desktop, OpenCodeClaude Code, VS Code, Cursor, Cline, Amp
Tools52