aurum-mcp
aurum-mcp
Kommuniziere mit dem Aurum Design System über deinen LLM-Client. Komponenten · Tokens · Icons · Figma-Node-IDs · Changelog — alles abfragbar von Claude Code, Cursor, Copilot CLI, Gemini und Claude Desktop.
aurum-mcp ist ein Model Context Protocol-Server, der den Aurum Design-System-Katalog für LLMs zugänglich macht. Er liest ein gebündeltes JSON-Manifest (automatisch synchronisiert von changejarapp.github.io/aurum-android) und stellt 9 Tools bereit, die das LLM aufrufen kann, um Fragen zu beantworten wie:
„Zeig mir, wie man AurumChip verwendet.“
„Welches Farb-Token haben wir für Text bei negativem Feedback?“
„Was ist die Figma-Node für AurumTopAppBar?“
„Gib mir das Icon für einen Zurück-Pfeil.“
„Was hat sich im letzten Release geändert?“
Installation (einmal kopieren, für jeden Client)
Wähle unten deinen Client aus, füge den Schnipsel in die entsprechende Konfigurationsdatei ein und starte den Client neu.
Claude Code (.mcp.json im Projekt-Root oder ~/.claude.json)
{
"mcpServers": {
"aurum": {
"command": "npx",
"args": ["-y", "github:atri-jar/aurum-mcp#latest-stable"]
}
}
}Cursor (~/.cursor/mcp.json)
{
"mcpServers": {
"aurum": {
"command": "npx",
"args": ["-y", "github:atri-jar/aurum-mcp#latest-stable"]
}
}
}Copilot CLI (~/.copilot/mcp.json)
{
"mcpServers": {
"aurum": {
"command": "npx",
"args": ["-y", "github:atri-jar/aurum-mcp#latest-stable"]
}
}
}Gemini CLI (~/.gemini/settings.json unter mcpServers)
{
"mcpServers": {
"aurum": {
"command": "npx",
"args": ["-y", "github:atri-jar/aurum-mcp#latest-stable"]
}
}
}Claude Desktop (~/Library/Application Support/Claude/claude_desktop_config.json)
Gleiches Format — füge den obigen Schnipsel in mcpServers ein. Starte die App neu.
Das war's. Keine npm-Registry, kein ~/.npmrc, kein PAT, keine Umgebungsvariablen. Öffentliches Git, öffentliches npx.
Related MCP server: GDS MCP
Versionierung
Der Standard-Schnipsel verwendet #latest-stable — ein CI-verwalteter Git-Tag, der immer auf das neueste stabile Release zeigt. Verhält sich wie das latest-Dist-Tag von npm: Du erhältst automatische Updates bei jedem neuen npx-Cache-Miss (ca. 10 Minuten bis einige Stunden, abhängig vom Cache deines Clients).
Für Reproduzierbarkeit — automatisierte Skripte, auditiertes Setup — pinne auf einen expliziten Tag:
"args": ["-y", "github:atri-jar/aurum-mcp#v0.1.0"]Jede Version von aurum-mcp liefert das Manifest der passenden Aurum-Bibliotheksversion aus (@aurum-mcp:0.1.6 ⇄ aurum:0.1.6). Rufe get_aurum_version von deinem LLM-Client aus auf, um genau zu sehen, womit du kommunizierst.
Tools
Tool | Zweck |
| Listet alle Aurum-Komponenten auf, gruppiert nach Familie |
| Vollständige Komponentenspezifikation — KDoc, Signatur, Parameter, Figma-Deeplink |
| Token-Tabellen: Farbe (semantisch + visuell), Abstände, Radius, Rahmenbreite, Icon-Größe, Elevation, Typografie |
| Icons nach Namensfragment oder Kategorie finden |
| Einzelnes Icon: Drawables, Compose-Pfad, Figma-Deeplinks für Linie+Füllung |
| Changelog pro Version als Markdown — standardmäßig |
| Rückwärtssuche: Figma-Node-ID / URL → passende Aurum-Komponenten & Icons |
| Freitextsuche über alle Inhalte mit Vorschlägen für das nächste Tool |
| Manifest-Herkunft: Version, SHA, Generierungs-Zeitstempel |
Siehe docs/tools.md für vollständige Eingabeschemata und Beispielantworten.
Warum npx-von-Git und nicht npm?
Wir haben drei Distributionskanäle in Betracht gezogen (öffentliches npm, GitHub Packages, npx-von-Git) und uns für den dritten entschieden, da für ein internes Team-Tool, das auf Einfachheit, vollständige Kontrolle und null neue Infrastruktur optimiert ist, gilt:
Keine neuen Konten zu verwalten. Keine npm-Organisation, kein
NPM_TOKEN-Wechsel, keine 2FA-Wiederherstellung, keine Sorge um die 72-Stunden-Veröffentlichungsbeständigkeit. Das Repo IST das Artefakt, von Anfang bis Ende.Branch-basiertes Testen kostenlos. Möchtest du einen Feature-Branch ausprobieren? Ändere einfach den Schnipsel auf
#feat/branch-name— fertig. Bei npm müsstest du ein Pre-Release-Tag veröffentlichen, das für immer in der Registry bleibt.Vorhandene Authentifizierung. Dieses Repo ist öffentlich; Teammitglieder haben GitHub-Zugriff; nichts Neues zu konfigurieren.
Geringe Installationsverzögerung. Der erste Start dauert ca. 5–10 s für Klonen + Build gegenüber ca. 2–5 s bei npm. Zwischengespeicherte Starts sind identisch.
Kompromisse, die wir akzeptieren: weniger ausgefeilte UX beim Version-Pinning (Git-Tags vs. Semver-Bereiche) und keine Auffindbarkeit über öffentliches npm. Die vollständige Begründung findet sich in docs/architecture.md.
Lokale Entwicklung
git clone https://github.com/atri-jar/aurum-mcp.git
cd aurum-mcp
pnpm install
pnpm dev # run the server via tsx + stdio
pnpm inspect # spawn the official MCP Inspector UI
pnpm build # tsc → dist/
pnpm smoke # end-to-end tools/list + tools/call testDer Server liest data/manifest.json (eingecheckt). Um das neueste Manifest aus der Live-Aurum-Galerie zu ziehen und die gebündelte Kopie zu aktualisieren:
make manifest-fetchCI erledigt dies automatisch (siehe .github/workflows/sync-manifest.yml).
Architektur in einem Absatz
Das Aurum Design System liegt in Changejarapp/aurum-android (privat) und veröffentlicht eine öffentliche Galerie unter changejarapp.github.io/aurum-android. Das Skript tooling/gallery/generate.py aggregiert Komponenten, Tokens, Icons, Code-Connect-Mappings und das Changelog aus einem einzigen Satz von Parsern. Wir haben ein --emit-manifest-Flag hinzugefügt, das eine strukturierte JSON-Projektion derselben Daten erzeugt — der Vertrag ist tooling/manifest/schema.json in aurum-android. Dieser MCP-Server ist die Lese-Seite des JSON: Er lädt das Manifest beim Start, indiziert es und stellt die 9 oben genannten Tools bereit. Eine Quelle der Wahrheit, zwei Rendering-Ziele (HTML für Menschen, JSON für Agenten). Wenn aurum-ios erscheint, wird dessen Manifest als zusätzliche Quelle eingebunden — der MCP-Code ist plattformunabhängig.
Vollständiges Pipeline-Diagramm: docs/architecture.md.
Mitwirken
Issues und PRs sind willkommen. Siehe docs/contributing.md für den Workflow (Manifest-Sync, Drift-Check, Release-Prozess). Code-Stil: TypeScript strict, Prettier-Defaults; keine Geschäftslogik in Markdown-Formatern.
Lizenz
MIT — siehe LICENSE.
Available Tools
9 toolsget_aurum_versionA
Return the Aurum library version, manifest SHA, generation timestamp, and platform coverage. Use this to verify which Aurum snapshot you are reasoning about before answering version-specific questions.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so the description must cover behavioral traits. It discloses the returned information (version, SHA, timestamp, platform coverage) without mentioning any side effects, which is adequate for a read-only metadata tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences that are front-loaded with the primary purpose and a usage hint. No superfluous information.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (no parameters, no output schema), the description provides sufficient details about what it returns and its intended use case. It is fully adequate for an AI agent to select and invoke correctly.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool has no parameters, and the schema coverage is 100%. The description adds no parameter info, which is acceptable since there are none to document. Baseline of 4 applies.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool returns the Aurum library version, manifest SHA, generation timestamp, and platform coverage. It distinguishes itself from sibling tools like get_changelog and get_icon by focusing on version metadata.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explicitly states when to use this tool: before answering version-specific questions. While it does not list alternatives, the context of sibling tools makes the usage clear.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_changelogA
Return one or more Aurum changelog entries as markdown. Default returns the [Unreleased] section. Pass a specific version (e.g. 0.1.5) for that release, or all for the full history.
| Name | Required | Description | Default |
|---|---|---|---|
| version | No | Version to fetch (`Unreleased`, a semver string, or `all`). Defaults to `Unreleased`. |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Discloses output format (markdown) and parameter behavior. With no annotations, it carries the full transparency burden, which it meets without omitting key traits.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences cover purpose, default, and options. Every word earns its place; no redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Sufficient for a simple tool with one optional parameter. Lacks error handling or sample output, but adequate for correct invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% but description adds meaning by explaining default, accepted values (Unreleased, semver, 'all'), and output format.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Clearly states it returns Aurum changelog entries as markdown. Distinguishes itself from sibling tools (get_component, list_tokens, etc.) by specifying a unique resource and purpose.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides clear instructions on when to use (default Unreleased, specific version, or 'all') but lacks explicit guidance on when not to use or alternative tools.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_componentA
Fetch the full details of a single Aurum component by name: KDoc, Compose signature, every parameter (with types, defaults, and per-param docs), preview function names, Figma deeplink, Code Connect path, and gallery URL. Use after list_components or search to get the canonical snippet for a component.
| Name | Required | Description | Default |
|---|---|---|---|
| name | Yes | Composable name, e.g. `AurumChip`. Case-sensitive. | |
| platform | No | Reserved for future cross-platform manifests. | all |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, but the description conveys a read-like operation ('Fetch') and details the return data. It does not contradict any annotations and adds meaningful behavioral context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences, no waste. Front-loaded with the core purpose, then usage guidance. Efficient and clear.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no output schema, the description thoroughly explains the return data (KDoc, signature, parameters, preview, Figma link, etc.), making it complete for a fetch tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, baseline 3. The description adds context: name is case-sensitive and platform is reserved for future use, enhancing the schema's meaning.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it fetches full details of a single Aurum component by name, enumerating specific data points (KDoc, signature, parameters, etc.). This distinguishes it from siblings like 'list_components' which list components.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly advises to use after 'list_components' or 'search' to get the canonical snippet, providing clear context for when to use this tool versus alternatives.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_iconA
Fetch full details for a single Aurum icon by name: drawable resource paths, Compose path (AurumIcons.<Category>.<Name>), paired line/fill Figma node IDs, and deeplinks. Pass weight to focus on one variant.
| Name | Required | Description | Default |
|---|---|---|---|
| name | Yes | Icon name, e.g. `ChevronRight`. Case-insensitive. | |
| weight | No | Which weight to highlight (`line`, `fill`, or `both`). | both |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It details the return types (paths, IDs, deeplinks) and the effect of the weight parameter. It does not mention side effects, authentication needs, or read-only status, but the operation is clearly a data fetch with no destructiveness implied.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences with no redundancy. The first sentence states purpose and return types concisely; the second adds a usage hint. Every sentence earns its place.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no output schema, the description adequately lists what is returned. For a simple tool with two parameters, it covers the core functionality. It could mention missing-icon behavior or pagination but is otherwise complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema already provides full descriptions for both parameters (100% coverage). The description adds only minor nuance ('Pass weight to focus on one variant'), which largely restates the enum's purpose. Thus, the description adds limited value beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description uses a specific verb ('Fetch full details') and identifies the resource ('single Aurum icon by name'). It lists the specific information returned (drawable resource paths, Compose path, Figma node IDs, deeplinks), clearly distinguishing it from sibling tools like search_icons which search for icons.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage (fetch details by name) and offers guidance on the weight parameter to focus on a variant. However, it does not explicitly state when to use this tool versus alternatives like search_icons, nor does it provide conditions for use or exclusion.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_componentsA
List every Aurum component in the current manifest, with one-line descriptions and family grouping. Optionally filter to a specific platform (android, ios, or all). Use this as a starting point for navigation; follow up with get_component for full details.
| Name | Required | Description | Default |
|---|---|---|---|
| platform | No | Restrict results to a single platform. Omit or pass 'all' for everything. | all |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description must carry the burden. It states 'List', implying a read-only operation with no side effects. It also describes the output format ('one-line descriptions and family grouping'), but does not explicitly mention idempotency or permissions. For a listing tool, this is adequate but not exhaustive.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences, no redundant information. The first sentence states purpose and scope; the second gives usage guidance. Every sentence is valuable and front-loaded.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The tool is simple with 1 optional parameter and no output schema. The description mentions the output format ('one-line descriptions and family grouping') and positions it as a starting point. It does not cover pagination or performance, but for a listing tool of known components, this is nearly complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the schema fully documents the platform parameter. The description reiterates the filtering option but does not add new semantic detail beyond what the schema provides. Baseline of 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the verb 'List', the resource 'every Aurum component', and the scope 'in the current manifest'. It also specifies the output format: 'one-line descriptions and family grouping'. This distinguishes it from siblings like get_component (full details) and search (different use case).
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly says 'Use this as a starting point for navigation; follow up with get_component for full details.' This provides clear context on when to use this tool and suggests an alternative sibling for more detail.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_tokensA
List Aurum design tokens by category: color (semantic + visual palette), spacing, radius, borderWidth, iconSize, elevation, typography. Omit category to get a summary of all categories with counts. Pass a category for the full table.
| Name | Required | Description | Default |
|---|---|---|---|
| category | No | Token category to expand. Omit for a summary across all categories. |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, but the description discloses key behaviors: the tool returns a summary with counts when category is omitted, and a full table when a category is provided. This adds behavioral context beyond the schema, though no mention of pagination, rate limits, or performance implications.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two sentences, front-loaded with the core purpose, and no extraneous information. Every word earns its place.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (1 optional enum parameter, no output schema, no annotations), the description covers the essential behavioral aspects. It explains both use cases and the structure of the response implicitly. Could be improved by briefly describing the output format, but the context signals indicate no output schema, so the burden is on the description.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% with an enum and description. The description adds value by explaining the semantic difference between omitting the parameter (summary) and providing it (detailed table), which is not present in the schema's description.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Description clearly states the tool lists Aurum design tokens by category, enumerating the categories and distinguishing between summary (omit category) and detailed listing (pass category). This verb+resource+scope is specific and distinct from siblings.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly tells when to omit category for a summary and when to pass a category for full table, providing clear action guidance. No mention of alternatives, but the tool is self-contained and the instructions are sufficient.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
lookup_figma_nodeB
Reverse-lookup: given a Figma node ID (5126:2507 or 5126-2507) or a full Figma URL, return the matching Aurum components, Code Connect mappings, or icons. Designed for the designer workflow: 'I'm looking at this Figma node, what code is it?'.
| Name | Required | Description | Default |
|---|---|---|---|
| nodeIdOrUrl | Yes | Figma node ID (`123:456`, `123-456`) or any Figma URL containing one. |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided. Description mentions input formats and output types (Aurum components, Code Connect mappings, icons) but lacks details on result cardinality, error handling, pagination, or side effects. Incomplete behavioral disclosure.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Two efficient sentences, front-loaded with key term 'Reverse-lookup', includes example IDs. No unnecessary words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
No output schema; description vaguely says 'return matching...' without specifying format (list vs. single) or handling of missing nodes. Lacks completeness for a simple lookup tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% with clear parameter description. Tool description adds example formats but does not significantly enhance beyond schema. Baseline 3 applies.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's purpose: reverse-lookup from Figma node ID or URL to code artifacts. It specifies input formats and output types, distinguishing it from siblings like search or get_component.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description implies usage for designer workflow ('I'm looking at this Figma node, what code is it?') but does not explicitly state when not to use it or mention alternative tools (e.g., search) for similar tasks.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
searchA
Free-text search across all Aurum content (components, tokens, icons, changelog). Returns the top hits with the next-tool to call for details. Use this when you don't know which specific tool to start with.
| Name | Required | Description | Default |
|---|---|---|---|
| query | Yes | Free-text query. Supports lunr's syntax (boosts, fuzzy with `~`, prefix with `*`). | |
| limit | No | Maximum number of results. |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description must cover all behavioral aspects. It mentions returning top hits and a next-tool, but lacks details on result ordering, empty results behavior, or read-only nature.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Extremely concise: two sentences conveying purpose, scope, and usage context. Front-loaded with the core action, no unnecessary words.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the simplicity (2 params, no output schema) and context of sibling tools, the description covers the essential use case. Minor missing details like result ordering are acceptable.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema covers both parameters (query and limit) with detailed descriptions including lunr syntax. Description adds no extra meaning beyond the schema, so baseline 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states it performs free-text search across all Aurum content types and returns top hits with a suggestion for a follow-up tool, distinguishing it from specific component or icon lookups.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Explicitly states when to use: 'Use this when you don't know which specific tool to start with,' guiding the agent to this tool as a starting point before more targeted tools.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
search_iconsA
Search Aurum's icon catalog by name fragment or category. Returns matching icons with their drawable resource names, paired line/fill Figma node IDs, and deeplinks. Use this when a designer or engineer is looking for the right icon to use.
| Name | Required | Description | Default |
|---|---|---|---|
| query | Yes | Substring to match against icon name or category (case-insensitive). | |
| category | No | Optional category filter (Navigation, Action, Content, etc.). |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Since no annotations are provided, the description carries the full burden. It reveals that the tool returns matching icons with specific fields, which is helpful. However, it omits details like result limits, pagination, or ordering, which are relevant for a search tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is two sentences that efficiently convey purpose, output, and usage context. No unnecessary words, and the key information is front-loaded.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's simplicity (2 params, no output schema, no nested objects) and the presence of sibling tools, the description adequately covers purpose and output. It lacks details on result format (e.g., list vs single, sorting) but is generally complete for typical use.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, with both parameters fully described in the schema (query: case-insensitive substring; category: optional with examples). The description adds little beyond the schema, merely summarizing the search criteria. Given high coverage, a baseline of 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool searches Aurum's icon catalog by name fragment or category, and specifies the output includes drawable resource names, Figma node IDs, and deeplinks. It differentiates from siblings like get_icon (singular) and search (generic) by providing a specific use case.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explicitly says to use this tool when a designer or engineer is looking for the right icon, which provides clear context. However, it does not explicitly state when not to use it or mention alternative tools, leaving some ambiguity.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
9 tool updates
v0.1.0- First observed
get_aurum_version - First observed
get_changelog - First observed
get_component - First observed
get_icon - First observed
list_components - First observed
list_tokens - First observed
lookup_figma_node - First observed
search - First observed
search_icons
TDQS
Scored across 9 tools
Each tool targets a distinct resource or action: version, changelog, component details, icon details, components listing, tokens listing, Figma lookup, general search, and icon search. No overlap in purposes.
All tools use consistent snake_case with clear verb-noun patterns (get_, list_, search, lookup_). The naming logically distinguishes operations like retrieving single items (get_component) vs listing all (list_components).
With 9 tools, the server is well-scoped for a design system reference library. Each tool covers a necessary aspect (components, icons, tokens, changelog, version, Figma integration, and search) without excess.
The tool set covers the core read operations for components, icons, tokens, changelog, and Figma lookup. A minor gap is the lack of a dedicated 'list all icons' tool (only search_icons is available, requiring a query), but the overall surface is thorough.
Maintenance
Related MCP Connectors
Access and maintain design system docs, tokens, components, skills, and contexts across any project.
Find UI components and themes, retrieve code, and generate with hosted 21st AI when enabled.
Search the Cerebrium docs: deployment, cerebrium.toml, hardware, endpoints. Also sends feedback.
Serves your design system and coding standards to coding agents, so they stop guessing.
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