context-mode
★ 31.8k
vs
context-harness
★ 42
context-mode vs context-harness
context-mode: Every tool call in an MCP (Model-Controller-Program) environment dumps raw data into the context window, quickly consuming space and causing the agent to lose track of ongoing tasks. Context Mode is an MCP server that tackles this by sandboxing tool outputs to significantly reduce context usage, tracking session events in SQLite for continuity, and promoting 'think in code' to minimize data processing within the LLM.; context-harness: Context Harness is a local-first framework designed for ingesting and retrieving external knowledge into an AI tool's context. It supports various data sources like files, Git repositories, and S3 buckets, storing them in a local SQLite database for efficient keyword and semantic search.
01
TL;DR
context-modeMemory & Context · ★ 31.8k
When to choose:
- Your sessions fill up with tool output such as Playwright snapshots, GitHub issue lists or logs.
- You want work state (edits, git operations, tasks, decisions) to survive context compaction without being dumped back into the window.
- You use a hook-capable agent, where tool routing happens automatically.
When to skip:
- You need an OSI open-source licence: it uses the Elastic License 2.0, which restricts uses such as offering it as a managed service.
- Your sessions are short and rarely hit the context limit.
- You do not want hooks changing how your agent's tools behave.
context-harnessMemory & Context · ★ 42
Provide AI tools with searchable local project documentation and knowledge bases.
02
Side-by-Side Comparison
Field
context-modecontext-harnessCategory
Memory & Context
Memory & Context
Stars
★ 31.8k
★ 42
License
Elastic License 2.0
AGPL-3.0
Install Command
npm install -g context-mode
curl -L https://github.com/parallax-labs/context-harness/releases/latest/download/ctx-linux-x86_64.tar.gz | tar xz && sudo mv ctx /usr/local/bin/
Updated
1d ago
1w ago
Open Source
Yes
Yes
Tags
antigravity, claude, claude-code
Context Management, RAG Framework, Embeddings
03
Features
context-mode01Context Saving: Sandbox tools keep raw data out of the context window, achieving up to 98% reduction.
02Session Continuity: Tracks every file edit, git operation, task, and user decision in SQLite for seamless session resume.
03Think in Code: Promotes LLMs to program analysis, not compute it, saving 100x context by logging only results.
04Batch Execution & Search: Run multiple commands/queries in one call with tools like `ctx_batch_execute`.
05Advanced Knowledge Base: Uses SQLite FTS5 with BM25 ranking, smart snippets, and TTL cache for efficient information retrieval.
context-harness01Connector-driven ingestion supporting various sources (filesystem, Git, S3, Lua scripts)
02Multi-format file support including PDF, Word, PowerPoint, and Excel
03Flexible embedding pipeline with local, Ollama, and OpenAI providers
04Hybrid retrieval combining keyword (FTS5) and semantic search with configurable weighting
05MCP server to expose context to AI tools like Cursor and Claude via HTTP
04
Use Cases
context-mode↳Deep repository research and analysis (e.g., architecture, contributors, issues)
↳Analyze Git history to identify top contributors, commit frequency, and most changed files
↳Efficiently process large JSON APIs, web pages, or logs without flooding the context window
context-harness↳Provide AI tools with searchable local project documentation and knowledge bases.
↳Integrate diverse data sources (Git repos, S3, local files) into a unified context for RAG systems.
↳Enable AI assistants like Cursor or Claude to understand and respond based on private or proprietary enterprise data.
↳Build custom AI agents that require access to continuously updated external information.
05
Best For
context-modeMost PopularTrending
context-harness—
FAQ
FAQ
What is the difference between context-mode and context-harness?
Both context-mode and context-harness are in the Memory & Context category. context-mode has 31.8k stars, while context-harness has 42 stars.
Which is better, context-mode or context-harness?
The best choice depends on your use case. Choose context-mode if Deep repository research and analysis (e.g., architecture, contributors, issues), and context-harness if Provide AI tools with searchable local project documentation and knowledge bases..
Is context-mode free or open source?
Yes, context-mode is open source on GitHub (Elastic License 2.0).
Is context-harness free or open source?
Yes, context-harness is open source on GitHub (AGPL-3.0).
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