# diffctx (io.github.nikolay-e/diffctx@1.15.0) > Source: > Published: 2026-08-19 10:30:15+00:00 [← Index](/leaderboard) # diffctx Selects the minimum code an LLM needs to review a git diff The current version, v1.15.0, was published to the official MCP registry on 2026-08-19. It is distributed as diffctx on PyPI, filed under AI & LLMs by this index. Removals and unreachable sources are measured across every server this index tracks, contract drift across the servers that answer in consecutive snapshots; [the index's current counts](/stats) put this record in context. ## Using diffctx in Claude, Cursor, Gemini CLI, Cline, or Zed? MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and **HOLDs the call** when it drifts-before your agent acts. Zero credentials. This is not the package install for this server itself (use **Install this server** for that). Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less ``` uv tool install mcpindex-gate && mcpindex-config-wire ``` [method](/methodology) Semantic screen found no manipulation pattern in the description. Conformance probe not yet run. `mcpindex.integrity.description` passINFOevidence“No suspicious instructions found”via static_description - - Semantic screen only - the deterministic conformance probe has not run on this server - - Confidence is reported but not yet calibrated (v1) - - Screen reads the tool description, not the live behavior - - advisory - - registry description only no input schema - - screen model 8b - - Still current: the description we screened is unchanged, re-checked against the registry - - The registry listing (version, packages, links) changed after this screen ran - the description we assessed did not Semantic screen: an LLM judge reads the tool description for hidden instructions (status PARTIAL). A pass means the description is not lying, not that the tool is safe: a high-capability tool with an honest description still warrants caution. The deterministic conformance probe has not been run on this server yet, so the screen here is semantic-only. Posture: advisory. Confidences are reported but not yet calibrated (calibrated=false at v1). Full verdict history is not shown on this page. Own this server? [Screen its description →](/screen) ## That verdict was true at screening time (snapshot 2026-08-19). Contracts can change after screening, with no version bump. The gate pins diffctx’s tool contracts on first sight and holds any silent change before your agent acts - the check that keeps being true on Tuesday. [See your first HOLD in 2 minutes →](/guides/install-the-gate-first-hold) Related: [how to trust an MCP server](/guides/how-to-trust-an-mcp-server) · [screen before install](/guides/screen-mcp-server-before-install) · [silent contract drift](/guides/mcp-silent-contract-drift) People vet a server before wiring it in. One line on your project site or docs answers that with an independent record: screening verdict, registry provenance, contract drift history. It stays current as new screens and drift events land. ``` [Independent trust record for diffctx](https://mcpindex.ai/server/io-github-nikolay-e-diffctx) - screening verdict, registry provenance, and contract drift monitoring. Independent trust record for diffctx - screening verdict, registry provenance, and contract drift monitoring. ``` A live verdict badge for your README or listing. It reflects the current screen, links back here, and updates when the verdict does. ``` [![mcpindex](https://mcpindex.ai/api/v1/badge/io-github-nikolay-e-diffctx)](https://mcpindex.ai/server/io-github-nikolay-e-diffctx) mcpindex verdict ``` [methodology](/methodology) [GPT55 Model Gatewayxyz.558686.gpt55/token-gateway](/server/xyz-558686-gpt55-token-gateway) Remote MCP gateway for GPT-5.6 Luna, Soul, Terra, and x402-paid agent tools with no API key. [Gemini FAFone.faf/gemini-faf-mcp](/server/one-faf-gemini-faf-mcp) Persistent project context for Google Gemini. Python/FastMCP. IANA-registered .faf format. [three.ws Brainio.github.nirholas/brain-mcp](/server/io-github-nirholas-brain-mcp) List LLM providers and run chat completions through the three.ws multi-provider router.