Skillselion
NPM · SKILLSELION-MCP
On-demand access to thousands of install-ranked Claude Code skills - search and load mid-task.
Available components
Last scanned (5 hours ago)
Scores higher than 55% 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 Security81
- No malware found by supply-chain analysis.Pass
- CVE check failed: a known high-severity CVE affects zod 3.25.76, a direct dependency. A fixed version is available. View diagnostics → Fail
- No install/post-install scripts declared.Pass
- 30 of 93 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 76 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability66
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1013 tokens (~253/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- 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
- We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 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.
- 31 Oct 26 0
- Stability: 0.97 → pass security
- 30 Oct 26 0
- Stability: pass → 0.97 functional
- 27 Oct 26 0
- Package version: 0.9.6 → 0.9.10 functional
- 24 Oct 26 −5
- CVE-2023-54404 affects this package: high ▼ security
- Known CVEs: pass → fail ▼ security
- Stability: 0.97 → pass security
- 23 Oct 26 0
- Stability: pass → 0.97 functional
- 17 Oct 26 0
- Stability: 0.97 → pass security
- 16 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 14 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 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/skillselion-mcp@0.9.10
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Vulnerabilities 1 finding
| ID | CVE | Severity | Vector | Fix available |
|---|---|---|---|---|
| GHSA-mrhx-c7xc-m3w5 | CVE-2023-54404 | high | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | yes |
Background: What a vulnerability scan can and cannot prove →
Dependencies 93 packages
| Packages resolved | 93 |
|---|---|
| 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 →
load_skill ~329
Load a community-vetted skill into your context on demand - like installing it mid-task. Reach for this when a task is in a domain a skill likely covers (tests, frontend/UI, an API/DB, infra, a named framework) and a proven recipe would beat improvising - most valuable in territory you are less sure of, or fast-moving stacks where your memory may be stale. You MUST pass `context` (your task + stack + constraints): it ranks candidates, fits them to your current repo, flags dependency mismatches, and keeps the load deliberate. Returns the best match (real SKILL.md + bundled scripts/refs materialized to a temp folder, used like an installed skill) PLUS the next-best candidates so you can switch. Always verify the loaded skill against your project before trusting it. For broad "current best practices across the field" tasks that span several skills, use synthesize_skills instead.
| Name | Type | Req | Description |
|---|---|---|---|
| context | string | yes | REQUIRED. What you are actually doing + your stack + constraints/anti-patterns (e.g. "Next.js marketing page, no new deps, role-based locators"). Ranks candidates, fits them to your repo, and flags d… |
| id | string | – | An exact skill id from search_skillselion, e.g. "skill:owner/repo#slug". |
| query | string | – | What you need - task/skill keywords (e.g. "playwright e2e tests"). Required unless you pass an exact id. |
No output schema declared.
No examples provided.
search_skillselion ~169
Search Skillselion, a curated directory of Claude Code agent skills, MCP servers and plugin marketplaces, ranked by real community signal (installs + GitHub stars). Use to browse trusted skills/MCPs/marketplaces for the task at hand (e.g. "postgres", "code review", "playwright"). Skill searches blend keyword + semantic ranking (same matcher as load_skill). To actually USE a skill, call load_skill (with an id from here, or directly with a query - it searches for you).
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Max results (default 8). |
| query | string | yes | What to search for - a tool, framework, task, or keyword. |
| type | string | – | Restrict to one listing type. Omit to search all. |
No output schema declared.
No examples provided.
synthesize_skills ~178
Pull the BEST rules across the top matching community skills and merge them into one cross-source playbook - use for broad "how should I approach X / current best practices" tasks that span multiple skills, or when you want the field's combined guidance rather than one skill's. For a single specific skill (and its bundled scripts/files), use load_skill instead. Pass your task as `query` and your stack + constraints as `context` (required). Returns a deduped, provenance-tagged rule digest plus each source skill materialized on disk.
| Name | Type | Req | Description |
|---|---|---|---|
| context | string | yes | REQUIRED. What you are actually doing + your stack + constraints. Ranks candidates and fits them to your repo. |
| query | string | yes | The topic/task to synthesize across skills (e.g. "playwright e2e testing best practices"). |
No output schema declared.
No examples provided.
top_skillselion ~72
List the top entries on Skillselion (the leaderboard), optionally by type. Skills rank by installs; MCP servers and marketplaces by GitHub stars.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Max results (default 10). |
| type | string | – | Restrict to one listing type. Omit for all. |
No output schema declared.
No examples provided.
How do I install the Skillselion MCP server?
Skillselion runs locally as an npm package, launched with npx -y skillselion-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · skillselion-mcp
claude mcp add skillselion-skillselion-mcp -- npx -y skillselion-mcp
What is the Skillselion MCP server?
Skillselion is an MCP server listed in the public MCP registry as io.github.skillselion/skillselion-mcp. On-demand access to thousands of install-ranked Claude Code skills - search and load mid-task. This page covers its npm package (skillselion-mcp).
Is the Skillselion MCP server safe to use?
Skillselion scores 77 out of 100 on VerifyMCP. We recorded 1 known advisory against it as of 5 November 2026. It declares no install or post-install scripts. 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 Skillselion MCP server expose?
Skillselion exposes 4 tools: search_skillselion, load_skill, synthesize_skills, top_skillselion. Their descriptions and schemas cost roughly 748 tokens of context every time the server is loaded.
Is the Skillselion MCP server still maintained?
Skillselion 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 Skillselion MCP server under?
Skillselion declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.