io.github.YforC/antoskill
NPM · ANTOSKILL
A package manager for Agent Skills — discover, vet, and pin them across Claude Code and Codex.
Available components
Last scanned (1 hour ago)
Scores higher than 93% of npm servers
Category Developer Tools
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 30 of 92 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency71
- Repository check failed: the declared repository URL returned HTTP 404. See how to fix → View diagnostics → Fail
- Cryptographically verified build provenance (signed, bound to YforC/AntoSkills). View diagnostics → Pass
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 142 days ago).Pass
- Security-disclosure policy not yet verified: we couldn't inspect the source repository.Unverified
Schema Quality & AI Usability77
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 1071 tokens (~89/item across 12 items; 12 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
- An AI judge read all 12 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 3 Nov 26 0
- Stability: 0.97 → pass security
- 2 Nov 26 0
- Stability: pass → 0.97 functional
- 27 Oct 26 0
- Stability: 0.97 → pass security
- 26 Oct 26 0
- Stability: pass → 0.97 functional
- 20 Oct 26 0
- Stability: 0.97 → pass security
- 19 Oct 26 0
- Stability: pass → 0.97 functional
- 17 Oct 26 +1
- Stability: 0.87 → pass security
- 16 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Analysed npm/antoskill@0.2.0
Provenance Verified
A signed build attestation was found and verified, binding this exact artifact to the source repository it claims to come from.
| Result | Verified |
|---|---|
| Ecosystem | npm |
| Reason | Verified |
| Discovered via | Registry attestation endpoint |
| Source repo | YforC/AntoSkills |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/YforC/AntoSkills/.github/workflows/release.yml@refs/tags/v0.2.0 |
| Rekor log index | 1823332000 |
| Predicate type | SLSA build provenance https://slsa.dev/provenance/v1 |
| Subject digest | sha512:2b223f7b721101292f59256784fb5c3105060d59f380e1206ef99bb95015a142343828cb3241ad2fba6fe790799e1b260db0dc49cff876645c30be9bf |
Background: How many MCP packages publish verified provenance →
Dependencies 92 packages
| Packages resolved | 92 |
|---|---|
| Stale | 30 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
activate_profile Activate a skill profile ~167
Switch the installed set to a profile: install its skills and remove managed skills not in it. This is the token-saving move — the project ends up with only this profile's skills, so the agent loads only those.
| Name | Type | Req | Description |
|---|---|---|---|
| acknowledgeRisk | boolean | – | Acknowledge risk for any high-risk skills in the profile. |
| linkMode | string | – | How to materialize skills. 'auto' picks junction/symlink with copy fallback. |
| name | string | yes | Profile to activate. Installs its skills and removes managed skills not in it. |
| projectRoot | string | – | Absolute path to the project root. Defaults to the server's working directory. |
| targets | array | – | Which tools to install into. Omit to auto-detect (.claude / .agents). |
No output schema declared.
No examples provided.
define_profile Define a skill profile ~91
Create or replace a named profile (a group of skill ids) in antoskill.profiles.json.
| Name | Type | Req | Description |
|---|---|---|---|
| name | string | yes | Profile name, e.g. 'frontend' or 'backend'. |
| projectRoot | string | – | Absolute path to the project root. Defaults to the server's working directory. |
| skillIds | array | yes | Skill ids that belong to this profile (must be in the index). |
No output schema declared.
No examples provided.
detect_project Detect project stack ~45
Fingerprint the project's languages, frameworks, and tools used to match skills.
| Name | Type | Req | Description |
|---|---|---|---|
| projectRoot | string | – | Absolute path to the project root. Defaults to the server's working directory. |
No output schema declared.
No examples provided.
doctor Diagnose antoskill state ~44
Check targets, the content store, and links for drift from skills.lock.
| Name | Type | Req | Description |
|---|---|---|---|
| projectRoot | string | – | Absolute path to the project root. Defaults to the server's working directory. |
No output schema declared.
No examples provided.
install_skills Install skills ~195
Install selected skills into Claude Code and/or Codex, pinned to an immutable SHA + hash in skills.lock. Refuses skills the scanner flags as high-risk unless acknowledgeRisk:true. Only ids present in the index can be installed.
| Name | Type | Req | Description |
|---|---|---|---|
| acknowledgeRisk | boolean | – | Set true to proceed installing skills the scanner flagged as high-risk. |
| allowOverflow | boolean | – | Set true to exceed the installed-skill cap (the cap keeps the agent's context/token use low). |
| linkMode | string | – | How to materialize skills. 'auto' picks junction/symlink with copy fallback. |
| projectRoot | string | – | Absolute path to the project root. Defaults to the server's working directory. |
| skills | array | yes | Skills to install. Only ids present in the index are accepted. |
| targets | array | – | Which tools to install into. Omit to auto-detect (.claude / .agents). |
No output schema declared.
No examples provided.
list_installed List installed skills ~40
List skills recorded in this project's skills.lock.
| Name | Type | Req | Description |
|---|---|---|---|
| projectRoot | string | – | Absolute path to the project root. Defaults to the server's working directory. |
No output schema declared.
No examples provided.
list_profiles List skill profiles ~44
List defined skill profiles (named groups) and which one is active.
| Name | Type | Req | Description |
|---|---|---|---|
| projectRoot | string | – | Absolute path to the project root. Defaults to the server's working directory. |
No output schema declared.
No examples provided.
preview_skill Preview a skill ~72
Resolve a skill to a pinned SHA and show its SKILL.md, file list, scripts, and a static safety scan — review this before installing.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | The skill id from the index to preview. |
| ref | string | – | Optional branch/tag/sha to preview instead of the index default. |
No output schema declared.
No examples provided.
recommend_skills Recommend skills ~79
Rank high-quality skills from the index that match this project, with quality signals and why each matched.
| Name | Type | Req | Description |
|---|---|---|---|
| includeInstalled | boolean | – | Include already-installed skills (default false). |
| limit | integer | – | Max recommendations (default 10). |
| projectRoot | string | – | Absolute path to the project root. Defaults to the server's working directory. |
No output schema declared.
No examples provided.
remove_skill Remove a skill ~61
Remove an installed skill's links and lockfile entry (and GC its store copy if unused).
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | Installed skill id to remove. |
| projectRoot | string | – | Absolute path to the project root. Defaults to the server's working directory. |
No output schema declared.
No examples provided.
sync Sync skills from lockfile ~95
Rebuild the store and links from skills.lock at the pinned SHAs (reproducible; works offline when the store is warm).
| Name | Type | Req | Description |
|---|---|---|---|
| linkMode | string | – | How to materialize skills. 'auto' picks junction/symlink with copy fallback. |
| projectRoot | string | – | Absolute path to the project root. Defaults to the server's working directory. |
| verify | boolean | – | Verify store integrity (default true). |
No output schema declared.
No examples provided.
update_skill Update a skill ~138
Move an installed skill to a newer SHA after a fresh safety scan (re-pins skills.lock). Refuses on new high risk unless acknowledgeRisk:true.
| Name | Type | Req | Description |
|---|---|---|---|
| acknowledgeRisk | boolean | – | Acknowledge risk for the new version if flagged. |
| id | string | yes | Installed skill id to update. |
| linkMode | string | – | How to materialize skills. 'auto' picks junction/symlink with copy fallback. |
| projectRoot | string | – | Absolute path to the project root. Defaults to the server's working directory. |
| toRef | string | – | Target ref ('latest' by default, or a branch/tag/sha). |
No output schema declared.
No examples provided.
How do I install the io.github.YforC/antoskill MCP server?
io.github.YforC/antoskill runs locally as an npm package, launched with npx -y antoskill. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · antoskill
claude mcp add yforc-antoskill -- npx -y antoskill
What is the io.github.YforC/antoskill MCP server?
io.github.YforC/antoskill is an MCP server listed in the public MCP registry as io.github.YforC/antoskill. A package manager for Agent Skills, discover, vet, and pin them across Claude Code and Codex. This page covers its npm package (antoskill).
Is the io.github.YforC/antoskill MCP server safe to use?
io.github.YforC/antoskill scores 89 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the io.github.YforC/antoskill MCP server expose?
io.github.YforC/antoskill exposes 12 tools: detect_project, recommend_skills, preview_skill, list_installed, doctor, and 7 more. Their descriptions and schemas cost roughly 1,071 tokens of context every time the server is loaded.
Is the io.github.YforC/antoskill MCP server still maintained?
io.github.YforC/antoskill is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the io.github.YforC/antoskill MCP server under?
io.github.YforC/antoskill declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.