CtxWise is listed as Open Source. Check https://github.com/FramY2/ctxwise for the current plan limits, as vendors change pricing frequently.

CtxWise

Q: What is CtxWise?

CtxWise is a code AI tool listed on Use AI Tools. CtxWise is a multi-agent context firewall, MCP schema tree-shaker and token budget guard for Claude Code (CLAUDE.md), OpenAI Codex (AGENTS.md) and Cursor. It is meant to keep prompt injection and oversized tool schemas out of an agent's context, and ships as an npm package with a GitHub Action for CI.

Q: What is CtxWise best for?

CtxWise is commonly used for Hardening CLAUDE.md and AGENTS.md setups, Trimming oversized MCP schemas, CI checks on agent context files. It supports English.

Code🔥 Intermediate✅ Global access

Hardening CLAUDE.md and AGENTS.md setupsTrimming oversized MCP schemasCI checks on agent context files

Open SourceEnglish

CtxWise is a multi-agent context firewall, MCP schema tree-shaker and token budget guard for Claude Code (CLAUDE.md), OpenAI Codex (AGENTS.md) and Cursor. It is meant to keep prompt injection and oversized tool schemas out of an agent's context, and ships as an npm package with a GitHub Action for CI.

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🎯 Real-World Use Cases

Firewall the context

Block injected instructions from reaching the agent through context files.

Shake the schema tree

Trim MCP tool schemas down to the parts the agent actually needs.

Guard the budget

Set a token budget so context files cannot grow without limit.

⚖️ Honest Review

✅ Pros

+Covers all three major agent context conventions
+Schema trimming plus injection defence in one tool
+npm package and GitHub Action

⚠️ Cons

−Targets specific agent config files rather than any agent
−Budget and policy rules need tuning per project

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CodeOct 24, 2026