Skill of Skills
REMOTE · SKILLS.911FUND.IO · SCANNED SEP 21
Quality-ranked, cross-platform directory of AI coding skills, plugins and MCP servers.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security80
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability76
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 720 tokens (~120/item across 6 items; 6 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 Coverage88
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 58% of tool parameters carry a description.Partial
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
How do I install the Skill of Skills MCP server?
Skill of Skills is a hosted endpoint at https://skills.911fund.io/api/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · skills.911fund.io
claude mcp add --transport http io-911fund-skills-directory 'https://skills.911fund.io/api/mcp'
{
"mcpServers": {
"io-911fund-skills-directory": {
"url": "https://skills.911fund.io/api/mcp"
}
}
} {
"servers": {
"io-911fund-skills-directory": {
"type": "http",
"url": "https://skills.911fund.io/api/mcp"
}
}
} [mcp_servers.io-911fund-skills-directory] url = "https://skills.911fund.io/api/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"io-911fund-skills-directory": {
"type": "remote",
"url": "https://skills.911fund.io/api/mcp",
"enabled": true
}
}
} openclaw mcp add io-911fund-skills-directory --url 'https://skills.911fund.io/api/mcp' --transport streamable-http
mcp_servers:
io-911fund-skills-directory:
url: "https://skills.911fund.io/api/mcp" {
"McpServers": {
"io-911fund-skills-directory": {
"Transport": "http",
"Url": "https://skills.911fund.io/api/mcp"
}
}
} assistant mcp add io-911fund-skills-directory -t streamable-http -u 'https://skills.911fund.io/api/mcp'
{
"mcpServers": {
"io-911fund-skills-directory": {
"type": "http",
"url": "https://skills.911fund.io/api/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
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.
- 17 Sept 26 +7
- Authorization: unverified → partial ▲ security
- The server rewrote its instructions, which are the text every model session reads security
- Tool “get_collection” rewrote its description, which is the text the model reads security
- Tool “search_skills” rewrote its description, which is the text the model reads security
- Schema quality: pass → fail ▼ functional
- Tool coverage: 40% → 58% ▲ functional
- Tool “compare_tools” now declares an output schema ▲ functional
- Tool “demand_pulse” now declares an output schema ▲ functional
- Tool “get_collection” now declares an output schema ▲ functional
- Tool “get_skill” now declares an output schema ▲ functional
- Tool “list_collections” now declares an output schema ▲ functional
- Tool “search_skills” now declares an output schema ▲ functional
- First check of Tool coverage: 100 functional
- Schema quality: excellent → good functional
- MCP protocol: Implements a current MCP spec version (2026-07-28). functional
- MCP protocol version: 2025-11-25 → 2026-07-28 functional
- Server version: 3.8.0 → 3.11.0 functional
- “get_collection” added an optional parameter “risk_filter” cosmetic
- “search_skills” added an optional parameter “risk_filter” cosmetic
- “get_collection” reworded the description of “include_high_risk” cosmetic
- “search_skills” reworded the description of “include_high_risk” cosmetic
- 16 Sept 26 +41
- Injection markers: unverified → pass ▲ security
- HSTS header: unverified → pass ▲ security
- Transport: fail → pass ▲ security
- Stability: fail → pass ▲ security
- Authorization: Authorisation not fully verified: no authorisation is required to call this server, and 6 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. security
- Schema quality: unverified → fail ▼ functional
- Tool coverage: unverified → 100 ▲ functional
- Schema quality: fail → pass ▲ functional
- This server's schema is too large to store in full, so we cannot compare its tools day to day functional
- 15 Sept 26 −41
- Tool safety: pass → unverified ▼ security
- HSTS header: pass → unverified ▼ security
- Stability: pass → fail ▼ security
- Transport: pass → fail ▼ security
- Authorization: Authorisation not yet verified: we couldn't confirm whether this endpoint requires it. security
- Schema quality: fail → unverified ▼ functional
- Tool coverage: 100 → unverified ▼ functional
- Schema quality: pass → fail ▼ functional
- This server's schema is too large to store in full, so we cannot compare its tools day to day functional
- 26 Aug 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 +1
- Stability: 0.97 → pass security
- 11 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 31 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 27 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
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 21 Sept 2026 · Probed https://skills.911fund.io/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=911fund.io | CN=WE1,O=Google Trust Services,C=US | 17 Sept 2026 | 16 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 2182761b232ab6f13569c86b3228cf5 |
| SANs: 911fund.io, *.911fund.io | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of skills.911fund.io. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| io. | present | 57355 | 8 | Verified |
| 911fund.io. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains |
| content-security-policy | frame-ancestors 'self' https://911fund.io https://www.911fund.io |
| x-content-type-options | nosniff |
| referrer-policy | strict-origin-when-cross-origin |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://skills.911fund.io/api/mcp | Verified | 200 | |
| http (plaintext) | http://skills.911fund.io/api/mcp | HTTPS enforced | 301 | https://skills.911fund.io/api/mcp |
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 →
compare_tools Compare tools ~44
Side-by-side quality profiles for 2–5 tools by slug. Same fields as get_skill; ordering follows the request, not rank.
| Name | Type | Req | Description |
|---|---|---|---|
| slugs | array | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| compared | array | yes | – |
| not_found | array | – | – |
No examples provided.
demand_pulse Demand pulse ~45
Public, k-anonymous demand signal from the directory: trending searches, most-saved and most-installed tools. Aggregates only — sourced from ≥5 distinct anonymous sessions per entry.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| most_installed | array | yes | – |
| most_saved | array | yes | – |
| total_interactions | number | yes | – |
| trending_searches | array | yes | – |
No examples provided.
get_collection Get collection ~104
Quality-ranked tools inside one curated collection. Critical-risk tools are excluded by default (risk_filter); every result carries risk_level and risk_reasons.
| Name | Type | Req | Description |
|---|---|---|---|
| include_high_risk | boolean | – | Deprecated alias for risk_filter=none |
| limit | integer | – | – |
| risk_filter | string | – | Risk gate: exclude_critical omits critical risk (default); exclude_high omits high and critical risk; none omits no risk levels |
| slug | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| collection | object | yes | – |
| count | number | yes | – |
| results | array | yes | – |
| total_in_collection | number | yes | – |
No examples provided.
get_skill Get skill profile ~76
Full quality profile for one tool by slug (slugs come from search_skills / get_collection): score breakdown, structural signals, risk level and reasons, platforms, repo link. Direct lookups return any active tool regardless of risk — the risk assessment is part of the answer, not a filter here.
| Name | Type | Req | Description |
|---|---|---|---|
| slug | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| category | – | yes | – |
| composite_score | number | yes | – |
| description | string | yes | – |
| discovered_at | – | yes | – |
| forks | number | yes | – |
| is_official | boolean | yes | – |
| last_commit_at | – | yes | – |
| latest_release_at | – | yes | – |
| license | – | yes | – |
| name | string | yes | – |
| platforms | array | yes | – |
| profile_url | string | yes | – |
| quality_score | number | yes | – |
| readme_length | – | yes | – |
| release_count | number | yes | – |
| repo_url | – | yes | – |
| risk_level | string | yes | – |
| risk_reasons | array | yes | – |
| scores | object | yes | – |
| slug | string | yes | – |
| stars | number | yes | – |
| structural_signals | object | yes | – |
| tier | string | yes | – |
| type | string | yes | – |
| updated_at | – | yes | – |
No examples provided.
list_collections List collections ~42
The curated buyer-intent collections (e.g. mcp-servers, testing-qa, browser-automation). Use get_collection for the ranked tools inside one.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| collections | array | yes | – |
No examples provided.
search_skills Search skills ~222
Full-text search over the Skill of Skills directory (AI coding skills, plugins, MCP servers across Claude Code, Cursor, Codex, Windsurf, Cline). Results are ranked by the quality-first composite score, not popularity; when no tool matches every term, the closest partial matches are returned instead (match_mode: "any"), most relevant first. Critical-risk tools are excluded by default (risk_filter); every result carries risk_level and risk_reasons. Scores are evidence, not endorsements.
| Name | Type | Req | Description |
|---|---|---|---|
| include_high_risk | boolean | – | Deprecated alias for risk_filter=none |
| limit | integer | – | – |
| min_tier | string | – | Quality floor: curated ≥120, promising ≥80, experimental ≥40 |
| platform | string | – | Restrict to one client platform |
| query | string | yes | What capability you need, e.g. "postgres migrations" |
| risk_filter | string | – | Risk gate: exclude_critical omits critical risk (default); exclude_high omits high and critical risk; none omits no risk levels |
| Name | Type | Req | Description |
|---|---|---|---|
| count | number | yes | – |
| match_mode | string | yes | – |
| query | string | yes | – |
| results | array | yes | – |
No examples provided.
What is the Skill of Skills MCP server?
Skill of Skills is an MCP server listed in the public MCP registry as io.911fund.skills/directory. Quality-ranked, cross-platform directory of AI coding skills, plugins and MCP servers. This page covers its hosted endpoint (https://skills.911fund.io/api/mcp).
Is the Skill of Skills MCP server safe to use?
Skill of Skills scores 87 out of 100 on VerifyMCP. 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 Skill of Skills MCP server expose?
Skill of Skills exposes 6 tools: search_skills, get_skill, compare_tools, list_collections, get_collection, demand_pulse. Their descriptions and schemas cost roughly 533 tokens of context every time the server is loaded.
Does the Skill of Skills MCP server require authentication?
No. We connected to Skill of Skills without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Skill of Skills MCP server still maintained?
Skill of Skills is still listed as active in the MCP registry. We last reached this channel on 21 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.