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Rules MCP

io.github.AKR1166/rules-mcpv0.3.1Developer Tools

MCP for rules/skills/knowledge evaluation for Cursor, Claude, VS Code, and Antigravity.

In-path gate · all MCP tools

Using Rules MCP 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).

Install the mcpindex gate (one command)

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
Auditable install path →Watch it hold a drift →
Trust verdict · v1 advisory · method
NOT YET SCREENEDno verdict on file

Verdict not yet evaluated for this tool. The semantic screen takes adversarial cases first; coverage rolls out as the corpus expands (15/150 labels to graduation). The deterministic conformance probe is built but has not yet run on the public corpus, so a recorded verdict here is REVIEW or UNVERIFIED, never a clearing ALLOW. Until a verdict is recorded, an agent should treat this tool as not-yet-cleared and fall back to its own checks. Method: the eval, four-state verdict, honest limits.

Own this server? Screen its description →

That verdict was true at screening time (snapshot 2026-08-11).

Contracts can change after screening, with no version bump. The gate pins Rules MCP’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 →

Related: how to trust an MCP server · screen before install · silent contract drift

Environment variables
LOG_LEVEL

Log level: debug | info | warn | error (logs go to stderr)

SKILLS_PATH

Override path to Markdown/MDC skills directory

KNOWLEDGE_PATH

Override path to knowledge directory

PROFILES_PATH

Override path to agent profiles directory

PROFILE

Active agent profile (default, cursor, claude, …)

RULES_PATH

Override path to legacy YAML rules directory

MCP quality score · maturity, not trust · methodology
freshness
25
completeness
15
installability
25
documentation
15
stability
5
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