"Information about Obsidian (note-taking app or volcanic glass)" matching MCP connectors:

A fully free linter for agent skill files: lint_skill validates YAML frontmatter, structure, size budgets, and safety phrasing with a pass/fail verdict; packaging_check validates zip layout against marketplace rules; plus regex_test, json_validate, diff_texts, and cron_explain for skill authors. No license or account required.

Statically audits MCP tool surfaces for token cost, schema quality, and design issues.

Ground-truth code graph for your codebase: exact callers, callees, symbols & dependencies.

Repository evidence for agents before they adopt dependencies, enter codebases, compare, or merge.

Dev-registry data: npm/PyPI/Docker/VS Code packages, dep graphs, vulns, 50+ ecosystems.

Detect malicious or vulnerable npm packages: registry search, OSV.dev and GitHub advisory lookups

Detect malicious or vulnerable npm packages: registry search, OSV.dev and GitHub advisory lookups

Independent static verification for exact immutable public GitHub commits.

Rams is a design reviewer for UI code. The MCP server puts the hosted engine inside a coding agent: the agent passes files to the review_files tool and gets back a 0–100 score with file:line issues and concrete fixes — accessibility, color, typography, spacing, components, UX, motion, craft, and native SwiftUI. Same engine and scoring as the Rams GitHub App. 258 rules, published at rams.ai/rules. Free tier: 30 reviews/month.

Runs your code against a contract; returns HELD or BROKE at the exact input. Deterministic.

Multi-model code review: a panel of models + detectors return a pass/fail verdict. Paid via x402.

Governance copilot for AI-assisted coding. 72 packs, 532 rules, proof bundles.

Deterministic JSON repair, validate, example-gen, schema-coerce for agents. Zero LLM, sub-10ms.

Convert docs to agent-readable specs with criteria and constraints. $0.10/convert.

Multi-LLM council: 25+ frontier models in parallel, consensus scoring, verdict-first code review.

GitHub project health, package dependency risk, trending repos, license & package comparison.

Software component catalog: search your org's services, docs, APIs, dependencies, and ownership.

Live PR/MR code reviews via review_url_code. OAuth or portal Bearer auth.

Your agent already broke this three times. ChangeBook tells it before the fourth.

Enterprise code intelligence for M&A, security audits, and tech debt. Hosted server with 200k free.