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sim

Sim is the collaborative workspace to build, deploy, and monitor AI agents and workflows. Used by 100,000+ builders.

Install / Use

claude mcp add simstudioai -- npx -y github:simstudioai/sim

If the server publishes to npm under a different name, use that package instead — check the repo README.

About this skill
🔌

MCP Server

Model Context Protocol server

Quality Score

59/100

Category

Automation

Supported Platforms

Claude Code
Claude Desktop

Tags

Our assessment of sim

sim scores 59/100 on our quality scale, 2729th of 2,870 Automation skills we index.

Its MCP Server is 12 KB long, written without headings and no code examples: a thorough specification that gives an agent plenty to work with.

It has no GitHub stars yet, so there is no community track record; judge it on its content.

Substance
29/30
Structure
0/20
Description
12/15
Adoption
0/20
Freshness
5/15

Maintenance, license and trust

  • We could not determine when the repository was last updated.
  • No license is declared. By default that means all rights are reserved: you can read it, but reusing or redistributing it is not clearly permitted. Ask the author before building on it commercially.
  • Its trust signals score 68/100, with 3 cautions from licensing, adoption, age or documentation. These come from repository metadata, not a code audit — read the skill file before letting an agent act on it.

sim compared with similar skills

All 4 of these similar skills score higher than sim; compare them before choosing.

SkillScoreStarsUpdatedFormat
sim (this skill)by simstudioai590—MCP Server
Agent-Reachby Panniantong10091.8k20d agoCLAUDE.md
headroomby headroomlabs-ai10074.5ktodayCLAUDE.md
CowAgentby zhayujie10047.2ktodayCLAUDE.md
Scraplingby D4Vinci10085.8k1d agoMCP Server

Frequently asked questions

How do I install sim?
Run claude mcp add simstudioai -- npx -y github:simstudioai/sim. The install tabs above show the steps for each supported agent.
Which AI agents does sim work with?
It is written for Claude Code and Claude Desktop, as a MCP Server file. Other agents that read the same format can often use it too.
Is sim safe to use?
It declares no license and scores 68/100 on trust signals. Skills are instructions an agent will follow, so read the file before installing it and do not approve commands you do not understand.
Is sim still maintained?
We could not determine when the repository was last updated.

{ "name": "simstudio", "packageManager": "bun@1.4.2", "version": "0.0.0", "private": true, "license": "Apache-2.0", "workspaces": [ "apps/", "packages/" ], "scripts": { "build": "turbo run build", "dev": "turbo run dev", "dev:sockets": "cd apps/realtime && bun run dev", "dev:full": "bunx concurrently -n "App,Realtime" -c "cyan,magenta" "cd apps/sim && bun run dev" "cd apps/realtime && bun run dev"", "dev:full:capped": "bunx concurrently -n "App,Realtime" -c "cyan,magenta" "cd apps/sim && bun run dev:capped" "cd apps/realtime && bun run dev"", "test": "bun run test:scripts && turbo run test", "test:setup": "bun run --cwd packages/sim-setup test", "test:integration": "bun --no-env-file scripts/test-integration.ts", "test:search-performance": "KNOWLEDGE_SEARCH_PERFORMANCE_TEST=true bun --no-env-file scripts/test-integration.ts search-latency", "format": "biome format --write scripts && turbo run format", "format:check": "biome format scripts && turbo run format:check", "lint": "biome check --write --unsafe scripts && turbo run lint", "lint:check": "biome check scripts && turbo run lint:check", "lint:helm": "helm lint helm/sim --strict --values helm/sim/ci/default-values.yaml", "lint:all": "bun run lint && bun run lint:helm", "check": "bun run format:check", "check:egress-boundary": "bun run scripts/check-egress-boundary.ts", "check:boundaries": "bun run scripts/check-monorepo-boundaries.ts", "check:api-validation": "bun run scripts/check-api-validation-contracts.ts --check", "check:api-contract-routes": "bun run scripts/check-api-contract-routes.ts", "check:fork-dependent-coverage": "bun run scripts/check-fork-dependent-coverage.ts", "generate:openapi": "bun run scripts/generate-openapi.ts", "check:openapi": "bun run scripts/check-openapi.ts", "generate:cli-api": "bun run scripts/generate-v2-cli-api.ts", "check:cli-api": "bun run scripts/generate-v2-cli-api.ts --check", "generate:mcp-operations": "bun run scripts/generate-v2-mcp-operations.ts", "check:mcp-operations": "bun run scripts/generate-v2-mcp-operations.ts --check", "generate:cli-docs": "bun run scripts/generate-cli-docs.ts", "check:cli-docs": "bun run scripts/generate-cli-docs.ts --check", "generate:v2-route-table": "bun run scripts/generate-v2-route-table.ts", "check:v2-route-table": "bun run scripts/generate-v2-route-table.ts --check", "check:canonical-index": "bun run scripts/check-canonical-index-surface.ts", "check:cron-parity": "bun run scripts/check-cron-parity.ts", "check:api-validation:strict": "bun run scripts/check-api-validation-contracts.ts --check --enforce-boundary-baseline", "check:realtime-prune": "bun run scripts/check-realtime-prune-graph.ts", "check:tool-request-boundary": "bun run scripts/check-tool-request-boundary.ts", "check:actorless-executor-operations": "bun run scripts/check-actorless-executor-operations.ts", "check:permission-group-enforcement": "bun run scripts/check-permission-group-enforcement.ts", "check:capability-subject": "bun run scripts/check-capability-subject.ts", "check:principal-kind-parity": "bun run scripts/check-principal-kind-parity.ts", "check:application-graph": "bun run scripts/check-application-graph.ts", "generate:block-successors": "bun run scripts/generate-block-successors.ts", "check:block-successors": "bun run scripts/generate-block-successors.ts --check", "check:tool-registry-boundary": "bun run scripts/check-tool-registry-boundary.ts --check", "check:tool-param-reachability": "bun run scripts/check-tool-param-reachability.ts", "check:trigger-block-cycle": "bun run scripts/check-trigger-block-cycle.ts", "check:import-specifiers": "bun run scripts/check-import-specifiers.ts", "check:sql-date-binding": "bun run scripts/check-sql-date-binding.ts", "check:pending-drop-tables": "bun run scripts/check-pending-drop-tables.ts", "check:zustand-v5": "bun run scripts/check-zustand-v5-selectors.ts", "check:react-query": "bun run scripts/check-react-query-patterns.ts", "check:client-boundary": "bun run scripts/check-client-boundary-imports.ts --check", "check:utils": "bun run scripts/check-utils-enforcement.ts", "check:canvas-sentences": "bun run apps/sim/scripts/check-canvas-sentences.ts --require-coverage", "check:bare-icons": "bun run scripts/check-bare-icons.ts", "check:byok-providers": "bun run scripts/check-byok-providers.ts", "check:icon-paths": "bun run scripts/check-icon-paths.ts", "check:icon-path-precision": "bun run scripts/check-icon-path-precision.ts", "check:migrations": "bun run scripts/check-migrations-safety.ts", "check:native-typecheck": "bun run scripts/check-native-typecheck.ts", "check:source-text": "bun run scripts/check-source-text.ts", "check:comment-hygiene": "bun run scripts/check-comment-hygiene.ts", "check:site-urls": "bun run scripts/check-site-urls.ts", "check:library-content": "bun run scripts/check-library-content.ts", "check:spec-example-ids": "bun run scripts/check-spec-example-ids.ts", "check:script-tests": "bun run scripts/check-script-test-coverage.ts", "check:test-patterns": "bun run scripts/check-test-patterns.ts", "check:schema-mock": "bun run scripts/generate-schema-mock.ts --check", "check:audits": "bun run scripts/run-audits.ts", "check:skills": "bun run scripts/sync-skills.ts --check", "check:guidance-refs": "bun run scripts/check-guidance-refs.ts", "check:desktop-bridge": "bun run scripts/check-desktop-bridge-contract.ts --check", "check:desktop-ipc": "bun run scripts/check-desktop-ipc-contract.ts", "check:route-verbs": "bun run scripts/check-route-verbs.ts", "check:unused-exports": "bun run scripts/check-unused-exports.ts", "check:explicit-any": "bun run scripts/check-explicit-any.ts", "check:file-names": "bun run scripts/check-file-names.ts", "desktop-bridge-contract:update": "bun run scripts/check-desktop-bridge-contract.ts --update", "mship-contracts:generate": "bun run scripts/sync-mothership-stream-contract.ts", "mship-contracts:check": "bun run scripts/sync-mothership-stream-contract.ts --check", "billing-protocol-contract:generate": "bun run scripts/sync-billing-protocol-contract.ts", "billing-protocol-contract:check": "bun run scripts/sync-billing-protocol-contract.ts --check", "tool-metadata:generate": "bun run scripts/sync-tool-metadata.ts", "tool-metadata:check": "bun run scripts/sync-tool-metadata.ts --check", "deployment-config:generate": "bun run scripts/generate-deployment-config.ts", "deployment-config:check": "bun run scripts/generate-deployment-config.ts --check", "images:generate": "bun run scripts/generate-image-manifest.ts", "images:check": "bun run scripts/generate-image-manifest.ts --check", "integration-catalog:check": "bun run scripts/check-integration-catalog.ts", "docs:check": "bun run scripts/generate-docs.ts --check", "mship-tools:generate": "bun run scripts/sync-tool-catalog.ts", "mship-tools:check": "bun run scripts/sync-tool-catalog.ts --check", "trace-spans-contract:generate": "bun run scripts/sync-trace-spans-contract.ts", "trace-spans-contract:check": "bun run scripts/sync-trace-spans-contract.ts --check", "trace-attributes-contract:generate": "bun run scripts/sync-trace-attributes-contract.ts", "trace-attributes-contract:check": "bun run scripts/sync-trace-attributes-contract.ts --check", "trace-attribute-values-contract:generate": "bun run scripts/sync-trace-attribute-values-contract.ts", "trace-attribute-values-contract:check": "bun run scripts/sync-trace-attribute-values-contract.ts --check", "trace-events-contract:generate": "bun run scripts/sync-trace-events-contract.ts", "trace-events-contract:check": "bun run scripts/sync-trace-events-contract.ts --check", "metrics-contract:generate": "bun run scripts/sync-metrics-contract.ts", "metrics-contract:check": "bun run scripts/sync-metrics-contract.ts --check", "vfs-snapshot-contract:generate": "bun run scripts/sync-vfs-snapshot-contract.ts", "vfs-snapshot-contract:check": "bun run scripts/sync-vfs-snapshot-contract.ts --check", "docs-manifest:generate": "bun run scripts/sync-docs-manifest.ts", "docs-manifest:check": "bun run scripts/sync-docs-manifest.ts --check", "mship:generate": "bun run scripts/generate-mship-contracts.ts", "mship:check": "bun run scripts/generate-mship-contracts.ts --check", "library:covers": "bun run scripts/generate-library-covers.tsx", "library:covers:check": "bun run scripts/generate-library-covers.tsx --check", "skills:sync": "bun run scripts/sync-skills.ts", "bump:npm-packages": "bun run scripts/bump-npm-package-versions.ts", "sim": "bun run packages/sim-cli/src/index.ts", "sim-setup": "bun run packages/sim-setup/src/index.ts", "agent-stream-docs:generate": "bun run scripts/sync-agent-stream-docs.ts", "agent-stream-docs:check": "bun run scripts/sync-agent-stream-docs.ts --check", "prepare": "bun husky", "test:workflow-sync": "bun --no-env-file scripts/test-integration.ts lib/workspaces/integration", "type-check": "turbo run type-check", "release": "bun run scripts/create-single-release.ts", "test:scripts": "vitest run --config scripts/vitest.config.ts", "check:agent-cli-boundary": "bun run scripts/check-agent-cli-boundary.ts", "check:dead-code": "bun run node_modules/knip/bin/knip.js" }, "overrides": { "react": "19.2.4", "react-dom": "19.2.4", "next": "16.3.6", "@next/env": "16.3.6", "drizzle-orm": "^0.45.2", "postgres": "^3.4.5", "minimatch": "^10.2.5", "marked": "18.0.11", "mermaid": "11.16.1", "zod": "4.3.6", "e2b": "2.50.0", "@hono/node-server": "1.19.15", "brace-expansion": "5.0.9", "deepmerge-ts": "8.0.0", "dompurify": "3.4.13", "engine.io": "6.6.8", "fast-uri": "3.1.5", "hono": "4.12.34", "ip-address": "10.5.0", "postcss": "8.5.26", "protobufjs": "7.6.5", "socket.io": "4.8.3", "socket.io-parser": "4.2.7", "ws": "8.21.3" }, "optionalDependencies": { "@next/swc-darwin-arm64": "16.3.6", "@next/swc-darwin-x64": "16.3.6", "@next/swc-linux-arm64-gnu": "16.3.6", "@next/swc-linux-x64-gnu": "16.3.6" }, "devDependencies": { "@babel/parser": "7.29.2", "@biomejs/biome": "2.0.6", "@mdx-js/mdx": "3.1.1", "@octokit/rest": "^21.0.0", "@sim/utils": "workspace:", "@types/opentype.js": "1.3.10", "@typescript/native": "npm:typescript@^7.0.2", "@typescript/typescript6": "^6.0.2", "@vercel/og": "0.6.8", "ajv": "8.18.0", "commander": "^11.1.0", "concurrently": "10.0.5", "drizzle-orm": "^0.45.2", "glob": "13.0.0", "gray-matter": "4.0.3", "husky": "9.1.7", "json-schema-to-typescript": "15.0.4", "knip": "6.37.0", "lint-staged": "16.0.0", "opentype.js": "1.3.4", "pdf-lib": "1.17.1", "react": "19.2.4", "remark-gfm": "4.0.1", "remark-parse": "11.0.0", "sharp": "0.35.4", "turbo": "2.9.14", "unified": "11.0.5", "unist-util-visit": "5.1.0", "vitest": "^5.0.1", "zod": "4.3.6" }, "lint-staged": { ".{js,jsx,ts,tsx,json,css,scss}": [ "biome check --write --no-errors-on-unmatched --files-ignore-unknown=true" ] }, "trustedDependencies": [ "isolated-vm", "sharp" ], "patchedDependencies": { "@better-auth/oauth-provider@1.6.27": "patches/@better-auth%2Foauth-provider@1.6.27.patch", "drizzle-kit@0.31.10": "patches/drizzle-kit@0.31.10.patch", "postgres@3.4.9": "patches/postgres@3.4.9.patch", "echarts@6.1.0": "patches/echarts@6.1.0.patch" } }

Related Skills

View on GitHub
GitHub Stars0
CategoryAutomation
UpdatedNaNy ago
Forks0

Trust signals

68/100

From repository metadata: license, adoption, age and documentation. Not a code audit — see the Safety scan above for what the skill file itself contains.

2 medium1 low