Arc Skills MCP server

Read from the package source without running it. The installed server may list more.

• compare_models

  Return exact added/removed/modified records by stable ID; no semantic judgment.

• export_artifactwrite action

  Create a NEW local JSON/CSV/XLSX/Markdown/text output. Existing files never overwritten.

• get_skill

  Load one task's instructions and reference IDs. The host performs its AI reasoning.

• get_task_artifact

  Resolve a saved result file for an explicit host-open action within the workspace.

• import_requirements

  Map source fields to a proposal; optional proposal_path saves ALL rows to a new JSON file.

• import_task_input

  Copy an explicitly chosen file into the workspace (8 MiB max), without overwriting.

• inspect_file

  Inventory format, sheets, columns, counts and extraction warnings inside the workspace.

• load_model

  Read an entire local exchange model or import proposal JSON, bounded to 2 MiB.

• open_task_bench

  Open the local task picker with all 100 skills and saved task results. No Arc login.

• prepare_task

  Save selected evidence and return a prompt for the host AI; does not run an AI.

• read_file

  Read bounded source records/text; offsets count records or text lines. Follow next_offset.

• read_reference

  Read a shared engineering guide by ID (e.g. engineering-model, standards, verification).

• read_task

  Read the saved evidence, handoff prompt and actual results for one local task.

• save_task_result

  Save actual host-AI findings once; complete/partial are analysis status, not approval.

• search_skills

  Find engineering tasks by words/category; empty query lists available skills.

• trace_relationships

  Trace recorded model paths with explicit depth/path limits; not impact likelihood.

• validate_model

  Validate the local engineering exchange schema, endpoint rules, IDs and cycles.

• verify_task

  Reject changed source files or already completed tasks before reasoning/save.

• Code scan85 source files scanned25/25
• –Live reliabilityno gateway calls yet and no remote to proben/a
• –Tool poisoningtools not inspected (local package is not executed); not countedn/a
• Auth qualitylocal package, no credentials required12/15
• Maintenancelast push 25 days ago15/15
• Maintainer identitynamespace and repository owner differ4/10

Safety score

86/100

higher than 72% of 48,255 servers

Tools

18

the typical server has 7

Tools that change things

6%

typical: 0%. Fewer write tools means less an agent can break

GitHub stars

12

more than 89% of 28,688 servers

Downloads a week

54

more than 45% of 12,191 servers with a package

Arc Skills: common questions

Is Arc Skills MCP server safe?

Yes, by our scan: it is graded A (86/100). Read the Arc Skills safety report

How do I install Arc Skills?

It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.

Does Arc Skills need an API key?

No secret keys are declared. It reads 1 setting from the environment.

Is Arc Skills maintained?

The last commit was 32 days ago (2026-10-03). The latest release is v0.2.0.

What can I use instead of Arc Skills?

Servers from other publishers that do the same job: Entroly MCP server, ARC-1 MCP server and ARC-1 MCP server. Compare all Arc Skills alternatives.

How does Arc Skills compare with other MCP servers?

safety score 86/100 (higher than 72% of 48,255 servers); tools 18 (the typical server has 7); tools that change things 6% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.