three.ws Marketplace
NPM · @THREE-WS/MARKETPLACE-MCP · SCANNED SEP 23
Browse and discover the public three.ws agent marketplace and skills catalog. Read-only.
Available components
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
- 31 of 96 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency35
- 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
- License check failed: the license (SEE LICENSE IN LICENSE) isn't a recognized OSI-approved license. See how to fix → Fail
- Actively maintained (last published 11 days ago).Pass
- Publishes a security disclosure policy (SECURITY.md).Pass
Schema Quality & AI Usability81
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 688 tokens (~137/item across 5 items; 5 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 Management93
- Stability observed for 28 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
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 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 6 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
How do I install the three.ws Marketplace MCP server?
three.ws Marketplace runs locally as an npm package, launched with npx -y @three-ws/marketplace-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 · @three-ws/marketplace-mcp
claude mcp add nirholas-marketplace-mcp -- npx -y @three-ws/marketplace-mcp
{
"mcpServers": {
"nirholas-marketplace-mcp": {
"command": "npx",
"args": [
"-y",
"@three-ws/marketplace-mcp"
]
}
}
} {
"servers": {
"nirholas-marketplace-mcp": {
"command": "npx",
"args": [
"-y",
"@three-ws/marketplace-mcp"
]
}
}
} codex mcp add nirholas-marketplace-mcp -- npx -y @three-ws/marketplace-mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"nirholas-marketplace-mcp": {
"type": "local",
"command": [
"npx",
"-y",
"@three-ws/marketplace-mcp"
],
"enabled": true
}
}
} openclaw mcp add nirholas-marketplace-mcp --command npx --arg -y --arg @three-ws/marketplace-mcp
mcp_servers:
nirholas-marketplace-mcp:
command: "npx"
args: ["-y", "@three-ws/marketplace-mcp"] {
"McpServers": {
"nirholas-marketplace-mcp": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"@three-ws/marketplace-mcp"
]
}
}
} assistant mcp add nirholas-marketplace-mcp -t stdio -c npx -a -y @three-ws/marketplace-mcp
{
"mcpServers": {
"nirholas-marketplace-mcp": {
"command": "npx",
"args": [
"-y",
"@three-ws/marketplace-mcp"
]
}
}
} 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.
- 22 Sept 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.
- 20 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.
- 19 Sept 26 −3
- Stability: pass → 0.80 functional
- 18 Sept 26 0
- Stability: 0.97 → pass security
- 17 Sept 26 0
- Stability: pass → 0.97 functional
- 16 Sept 26 0
- Stability: 0.97 → pass security
- 15 Sept 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.
- 13 Sept 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 23 Sept 2026 · Analysed npm/@three-ws/marketplace-mcp@0.1.2
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 →
Dependencies 96 packages
| Packages resolved | 96 |
|---|---|
| Stale | 31 |
| 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 →
agent_categories List agent marketplace categories ~41
List the agent marketplace categories with the count of published agents in each, plus the overall total. Use the returned category slugs to filter browse_agents. Read-only.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
agent_detail Fetch a marketplace agent by id ~73
Fetch one published marketplace agent by its id, including its full detail: name, description, category, tags, system prompt, greeting, capabilities, author, ratings, skill prices, subscription tiers, and avatar URLs. Read-only.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | The marketplace agent id (a UUID from a browse_agents card). |
No output schema declared.
No examples provided.
browse_agents Browse the agent marketplace ~184
Search and page the public three.ws agent marketplace. Filter by category and free-text query, choose a sort order, and get back a list of agent cards (id, name, description, category, tags, ratings, view/fork counts, thumbnail and GLB avatar URLs) plus a cursor for the next page. Read-only.
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | Restrict to one category slug (e.g. "programming", "marketing", "education"). |
| cursor | string | – | Opaque pagination cursor from a previous response's next_cursor. |
| limit | integer | – | How many agents to return (1–48, default 24). |
| q | string | – | Free-text search across agent name, description, and tags. |
| sort | string | – | Sort order: "recommended" (default), "recent", "popular", or "top_rated". |
No output schema declared.
No examples provided.
browse_skills Browse the skills catalog ~195
Search and page the public three.ws skills catalog — reusable tools and capabilities agents can install. Filter by free-text query and category, choose a sort order, and get back a list of skills (id, name, slug, description, category, tags, install count, rating, per-call price, author, content preview) plus a cursor for the next page. Read-only.
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | Restrict to one category slug (e.g. "general"). |
| cursor | string | – | Opaque pagination cursor from a previous response's next_cursor. |
| limit | integer | – | How many skills to return (1–50, default 20). |
| q | string | – | Free-text search across skill name, description, and tags. |
| sort | string | – | Sort order: "popular" (default, by install count), "new" (most recent), or "az" (A–Z). |
No output schema declared.
No examples provided.
skill_categories List skills catalog categories ~50
List the skills catalog categories that have at least one public skill, each with a slug, label, and the count of skills in it. Use the returned slugs to filter browse_skills. Read-only.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
What is the three.ws Marketplace MCP server?
three.ws Marketplace is an MCP server listed in the public MCP registry as io.github.nirholas/marketplace-mcp. Browse and discover the public three.ws agent marketplace and skills catalog. Read-only. This page covers its npm package (@three-ws/marketplace-mcp).
Is the three.ws Marketplace MCP server safe to use?
three.ws Marketplace scores 82 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 23 September 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 three.ws Marketplace MCP server expose?
three.ws Marketplace exposes 5 tools: browse_agents, agent_detail, agent_categories, browse_skills, skill_categories. Their descriptions and schemas cost roughly 543 tokens of context every time the server is loaded.
Is the three.ws Marketplace MCP server still maintained?
three.ws Marketplace is still listed as active in the MCP registry. We last reached this channel on 23 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.