{"slug": "diffctx-io-github-nikolay-e-diffctx-1-15-0", "title": "diffctx (io.github.nikolay-e/diffctx@1.15.0)", "summary": "Diffctx v1.15.0, an MCP server that selects the minimum code an LLM needs to review a git diff, was published to the official MCP registry on 2026-08-19 and is distributed on PyPI. The mcpindex gate pins its tool contracts and holds calls when contract drift occurs, and a semantic screen found no manipulation pattern in its description, though the deterministic conformance probe has not yet run.", "body_md": "[← Index](/leaderboard)\n\n# diffctx\n\nSelects the minimum code an LLM needs to review a git diff\n\nThe 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.\n\n## Using diffctx in Claude, Cursor, Gemini CLI, Cline, or Zed?\n\nMCP 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).\n\nRewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less\n\n```\nuv tool install mcpindex-gate && mcpindex-config-wire\n```\n\n[method](/methodology)\n\nSemantic screen found no manipulation pattern in the description. Conformance probe not yet run.\n\n`mcpindex.integrity.description`\n\npassINFOevidence“No suspicious instructions found”via static_description\n\n- - Semantic screen only - the deterministic conformance probe has not run on this server\n- - Confidence is reported but not yet calibrated (v1)\n- - Screen reads the tool description, not the live behavior\n- - advisory\n- - registry description only no input schema\n- - screen model 8b\n- - Still current: the description we screened is unchanged, re-checked against the registry\n- - The registry listing (version, packages, links) changed after this screen ran - the description we assessed did not\n\nSemantic 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.\n\nOwn this server? [Screen its description →](/screen)\n\n## That verdict was true at screening time (snapshot 2026-08-19).\n\nContracts 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.\n\n[See your first HOLD in 2 minutes →](/guides/install-the-gate-first-hold)\n\nRelated: [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)\n\nPeople 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.\n\n```\n[Independent trust record for diffctx](https://mcpindex.ai/server/io-github-nikolay-e-diffctx) - screening verdict, registry provenance, and contract drift monitoring.\n<a href=\"https://mcpindex.ai/server/io-github-nikolay-e-diffctx\">Independent trust record for diffctx</a> - screening verdict, registry provenance, and contract drift monitoring.\n```\n\nA live verdict badge for your README or listing. It reflects the current screen, links back here, and updates when the verdict does.\n\n```\n[![mcpindex](https://mcpindex.ai/api/v1/badge/io-github-nikolay-e-diffctx)](https://mcpindex.ai/server/io-github-nikolay-e-diffctx)\n<a href=\"https://mcpindex.ai/server/io-github-nikolay-e-diffctx\"><img src=\"https://mcpindex.ai/api/v1/badge/io-github-nikolay-e-diffctx\" alt=\"mcpindex verdict\" height=\"20\" /></a>\n```\n\n[methodology](/methodology)\n\n[GPT55 Model Gatewayxyz.558686.gpt55/token-gateway](/server/xyz-558686-gpt55-token-gateway)\n\nRemote MCP gateway for GPT-5.6 Luna, Soul, Terra, and x402-paid agent tools with no API key.\n\n[Gemini FAFone.faf/gemini-faf-mcp](/server/one-faf-gemini-faf-mcp)\n\nPersistent project context for Google Gemini. Python/FastMCP. IANA-registered .faf format.\n\n[three.ws Brainio.github.nirholas/brain-mcp](/server/io-github-nirholas-brain-mcp)\n\nList LLM providers and run chat completions through the three.ws multi-provider router.", "url": "https://wpnews.pro/news/diffctx-io-github-nikolay-e-diffctx-1-15-0", "canonical_source": "https://mcpindex.ai/server/io-github-nikolay-e-diffctx", "published_at": "2026-08-19 10:30:15+00:00", "updated_at": "2026-08-19 11:11:59.485864+00:00", "lang": "en", "topics": ["developer-tools", "ai-tools", "artificial-intelligence"], "entities": ["diffctx", "MCP registry", "PyPI", "mcpindex", "Claude", "Cursor", "Gemini CLI", "Cline"], "alternates": {"html": "https://wpnews.pro/news/diffctx-io-github-nikolay-e-diffctx-1-15-0", "markdown": "https://wpnews.pro/news/diffctx-io-github-nikolay-e-diffctx-1-15-0.md", "text": "https://wpnews.pro/news/diffctx-io-github-nikolay-e-diffctx-1-15-0.txt", "jsonld": "https://wpnews.pro/news/diffctx-io-github-nikolay-e-diffctx-1-15-0.jsonld"}}