content-knowledge-mcp
content-knowledge-mcp
Ein MCP-Server, der einem Content-Agenten Zugriff auf das redaktionelle Wissen eines Unternehmens gibt: Markenregeln, einen visuellen Vorlagenkatalog und vergangene Beiträge mit ihren Ergebnissen. Das Wissen liegt in einfachen Markdown-Dateien, die dem Unternehmen gehören; der Server stellt es lediglich bereit.
Als technischer Kern meiner Bachelorarbeit über KI-Agenten und Workflow-Automatisierung entstanden. Die Version hier ist die generische Engine, mit einem erfundenen Unternehmen als Beispielwissen.
Warum es keine Vektordatenbank gibt
Der naheliegende Ansatz ist, das Wissen zu embedden und nach Ähnlichkeit abzurufen. Dieser Server tut das bewusst nicht, aus zwei Gründen.
Auf dieser Skala gewinnt die strukturierte Suche über kuratierte Dateien. Die redaktionellen Regeln eines Unternehmens sind einige Dutzend Blöcke, nicht zehntausende. Sie in Chunks zu zerlegen und per Kosinus-Ähnlichkeit abzurufen, fügt einen Indizierungsschritt hinzu, einen Speicher, der synchron gehalten werden muss, und eine Fehlerklasse, die schwer zu erkennen ist – im Tausch für eine Trefferquote, die man bereits hatte.
Jede Regel trägt eine ID, und genau das ist der Punkt. Regeln sind R1, R17, R905; Vorlagen sind T901, T905; Launch-Datensätze sind L2. Der Agent wird angewiesen, die verwendeten IDs zu nennen. Dadurch wird jeder Vorschlag zu etwas, das ein Mensch in Sekunden prüfen kann: Der Reviewer liest rules_used: ["R920", "R903"] und weiß genau, welche Regeln diesen Beitrag erzeugt haben. Ein Embedding liefert einen Absatz, aber kein Argument. Wenn das Ziel eine funktionierende menschliche Prüfinstanz ist, schlägt Nachvollziehbarkeit Cleverness.
Der Preis dafür ist real und sollte ausgesprochen werden: Die Suche ist lexikalisch, eine Abfrage, die mit einer Regel keine Wörter gemeinsam hat, findet sie also nicht. Der Server antwortet mit NO_MATCH, statt so zu tun, als hätte er etwas gefunden – genau dieses Verhalten prüfen die Evaluierungsfälle.
Related MCP server: OntoRamp Graph Query
Architektur
Claude Desktop / Claude Code ──stdio──┐
├──▶ content-knowledge-mcp ──▶ KNOWLEDGE_PATH/
n8n MCP Client Tool ──────────HTTP────┘ (3 tools) guidelines/*.md R# rules, L# launch records
(host.docker.internal:8765) templates/catalog.md T# catalog
past-posts/*.md past posts and outcomesDrei Tools, ein Transportumschalter, kein Zustand:
Tool | Gibt zurück |
| passende Regelblöcke mit ihren |
| der Vorlagenkatalog, gefiltert, mit |
| bis zu drei vergangene Beiträge mit ihren Ergebnissen, zur Ton-Kalibrierung |
Der Server besitzt keinerlei Inhalte. Verweist man KNOWLEDGE_PATH auf einen anderen Ordner, bedient er ein anderes Unternehmen – genau das hat es veröffentlichbar gemacht, ohne den Code anzufassen.
Schnellstart
git clone https://github.com/alessandro-martelli/content-knowledge-mcp
cd content-knowledge-mcp
python3 -m venv .venv && .venv/bin/pip install fastmcp
# run the twelve checks against the example knowledge
KNOWLEDGE_PATH=examples/knowledge .venv/bin/python smoke_test.py
# stdio, for Claude Desktop or Claude Code
KNOWLEDGE_PATH=examples/knowledge .venv/bin/python server.py
# HTTP on :8765, for the n8n MCP Client Tool
KNOWLEDGE_PATH=examples/knowledge .venv/bin/python server.py --httpDas Beispielwissen unter examples/knowledge/ ist vollständig erfunden: eine fiktive Designschule mit Regeln, Launch-Datensätzen, einem Vorlagenkatalog und drei vergangenen Beiträgen. Es existiert, damit das Repository für alle lauffähig ist und die Tests etwas haben, an dem sie sich festbeißen können.
Evaluierung
Smoke-Tests: 12/12. Jede Prüfung läuft über einen echten fastmcp.Client über das Protokoll, nicht über die Hilfsfunktionen – ein Bruch in der Tool-Registrierung oder im Transport wird also hier sichtbar.
Agenten-Protokoll: 8 Fälle, 5 davon adversarial (widersprüchliche Regeln, Anfrage außerhalb des Geltungsbereichs, nicht verfügbares Tool, kein passendes Template, unterspezifizierte Eingabe). Ausgeführt im August 2026 gegen die Prompts der beiden Agenten: 6 von 8 bestanden, jede Ausgabe war auf Anhieb gültiges JSON, und die beiden Fehlschläge waren Fehler in der Testsuite, nicht des Agenten. Beide sind in eval/test-log.md festgehalten, jeweils mit dem Fix, den sie brauchen. Das Log bleibt so belassen, wie es entstanden ist: Eine Suite, die ausschließlich Erfolge meldet, misst nichts.
Ehrliche Grenzen
Die Suche ist lexikalisch und gewichtet nach Termfrequenz. Sie versteht keine Synonyme; eine Regel, die in Wörtern formuliert ist, die die Abfrage nicht verwendet, wird nicht gefunden.
Das Layout des Wissensordners ist festgelegt (
guidelines/,templates/catalog.md,past-posts/), und der Dateiname des Katalogs ist hartkodiert.Es gibt keinen Schreibpfad und keinen Cache: Jeder Aufruf liest die Dateien. Bei dieser Größe ist das in Ordnung – bei zehntausend Blöcken wäre es das nicht.
Die beiden offenen Fehler aus der Evaluierung sind in diesem Code noch nicht behoben:
rules_usedkann keineL#-Datensätze zitieren, und das Plan-Schema kann keine Zeile mit unbekanntem Kanal ausdrücken.
Lizenz
MIT, siehe LICENSE.
Available Tools
3 toolsget_post_examplesA
Retrieve past posts with their outcomes, for tone calibration. Query by topic, channel or type, e.g. 'linkedin annuncio'. Returns up to 3 examples; never copy sentences from them.
| Name | Required | Description | Default |
|---|---|---|---|
| query | No |
Output Schema
| Name | Required | Description |
|---|---|---|
| result | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description bears the full behavioral disclosure burden. It reveals the return limit ('Returns up to 3 examples') and adds a usage constraint ('never copy sentences from them'). The verb 'Retrieve' sufficiently implies a read-only operation for this kind of tool. It could optionally disclose more about the output shape, but that is already structurally represented by an output schema.
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 contain the entire message with no filler. The tool's value is front-loaded, followed by a practical example, a return limit, and a usage constraint. Every clause 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?
For a single-parameter retrieval tool with an output schema available, the description covers what is returned, how to query, and a practical guardrail. The only omission is a note about the default parameter, but the schema already declares a default. The agent can select and invoke the tool with confidence.
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 schema has 0% description coverage on the only parameter, `query`, so the description must compensate. It does: the parameter can be used to search by topic, channel, or type, and an example value is given. It does not describe what empty input does, though schema's default value covers that reasonable.
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 starts with a specific verb and resource: 'Retrieve past posts with their outcomes'. It also adds the intended use, 'tone calibration', which makes the tool's function concrete. It is clearly distinguishable from siblings like search_guidelines and list_visual_templates because neither of those fetches example posts.
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 tells the agent that querying can be by topic, channel, or type, with a concrete example ('linkedin annuncio'). It does not explicitly contrast with search_guidelines or list_visual_templates, but the purpose of tone calibration and the example query provide enough context. A score of 5 would require explicit when-to-use versus the sibling tools.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
list_visual_templatesA
List the official visual template catalog with usage rules (T# IDs). Optional query filters by content type, e.g. 'annuncio corso'. Empty query returns the full catalog.
| Name | Required | Description | Default |
|---|---|---|---|
| query | No |
Output Schema
| Name | Required | Description |
|---|---|---|
| result | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations providing read-only or side-effect hints, the description carries the behavioral burden. It communicates that the tool lists an official catalog, returns usage rules with T# IDs, and behaves differently based on the query parameter. It does not go further to describe matching behavior, ordering, or whether any 'rules' are embedded in the returned data, but the core read-oriented behavior is reasonably clear.
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 concise sentences, front-loads the main purpose, and uses an example to clarify parameter usage. There is no filler or repetition of schema fields, and every phrase adds value.
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?
For a simple list-with-optional-filter tool, the description covers the tool's purpose, the optional query, and the empty-query behavior. The presence of an output schema compensates for not describing the return structure. Minor ambiguity remains about what 'content type' means and how T# IDs are used, but as a whole it is largely sufficient.
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 0%, so the description must compensate, and it does. The 'query' parameter is given semantics: it optionally filters by content type, with the example 'annuncio corso', and empty returns the full catalog. This is meaningful beyond the raw string schema. It could be slightly stronger, but it sufficiently explains the one parameter.
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 a specific action, 'List the official visual template catalog', with a resource and an explicit mention of what makes these templates usable: the T# IDs. It does not explicitly contrast itself with the sibling tools search_guidelines or get_post_examples, so it stops short of full differentiation, but the verb and resource are unambiguous.
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?
It explains when the query parameter is useful and that an empty query returns the full catalog, which provides practical guidance for using the tool. However, it does not explicitly state when to prefer this tool over sibling tools such as search_guidelines or get_post_examples, so the usage context remains partially implied.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
search_guidelinesB
Search the company brand and editorial rules. Returns matching rule blocks with their IDs (R#), e.g. 'tone course post linkedin'.
| Name | Required | Description | Default |
|---|---|---|---|
| query | Yes |
Output Schema
| Name | Required | Description |
|---|---|---|
| result | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the burden of indicating behavior safely. It does disclose that the tool returns 'matching rule blocks with their IDs (R#)', which explains the shape of the output. However it omits details such as whether it is read-only, how many results are returned, or any limitations on query syntax.
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 only: the first states purpose, the second gives return format and a clear example. Every sentence serves a direct purpose with no fluff. It is appropriately front-loaded with the core action.
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?
For a simple one-parameter search tool with an output schema already defined, the description is nearly complete. It explains the input style and output format for typical searches. It still lacks usage guidance relative to siblings, which slightly reduces completeness.
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?
Parameter schema coverage is 0% since the query string has no description. The description compensates by giving a concrete example ('tone course post linkedin'), which clarifies that the query is free-form text and likely case-insensitive phrase style. This is meaningful added meaning beyond the bare 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 clearly states a specific action ('Search') and a precise resource ('company brand and editorial rules'). It distinguishes this as a search tool from the sibling tools (list_visual_templates, get_post_examples), though it could be more explicit about exactly how it differs.
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 does not say when to use this tool rather than the siblings. It gives no context, precedence, or exclusion. The example query implies usage, but an agent is given no guidance to choose this over the alternatives.
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.
3 tool updates
v0.1.0- First observed
get_post_examples - First observed
list_visual_templates - First observed
search_guidelines
TDQS
Scored across 3 tools
Each tool targets a distinct knowledge resource: editorial rules, visual templates, and past post examples. The descriptions clearly distinguish search, list, and get operations despite all supporting query. An agent can reliably choose the correct tool for each content creation step.
All tool names follow the consistent snake_case verb_noun pattern: search_guidelines, list_visual_templates, get_post_examples. The verbs also accurately reflect the operation type, making the naming predictable and scannable.
With only three tools, the server is tightly focused on content knowledge retrieval. Each tool covers a core knowledge domain for content creation—rules, templates, and examples—without redundant or unnecessary additions.
The set covers the main content-making inputs: brand/editorial guidelines, visual template catalog, and performance-calibrated post examples. Minor gaps exist such as fetching a specific rule by ID or retrieving more than three examples, but the tool set supports its purpose effectively.
Maintenance
Related MCP Connectors
Governed company memory: search decisions, rules and client facts; propose updates for review.
Brand strategy and content-calendar context for agents, with human-confirmed approval gates.
Read-only canon of design and copy rules for AI agents to audit generated UI, served as resources.
Read-only AgentiScript concept search, catalog, authenticity, license, and approved asset discovery.
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