# TaxGraph — AI Connector TaxGraph publishes 1 MCP tool to Claude. Marketplace availability, tool surface, verification tier, and what Node8 measured against the live endpoint. Source: https://node8.ai/ai-connectors/legal/taxgraph/ --- [AI Connectors](https://node8.ai/ai-connectors/) · [Legal](https://node8.ai/ai-connectors/legal/) # TaxGraph German tax law as a knowledge graph resolved by assessment period Listed in Claude · 1 published tool · Community-listed [Claude connector docs](https://tax-graph.com/product/claude) [tax-graph.com](https://tax-graph.com/) Overview ## What TaxGraph does TaxGraph structures German tax law for machine access. Coverage runs across the statutes, among them EStG, KStG, UStG, AO and ErbStG, plus BFH case law, BMF circulars, guidelines and official notes. The knowledge graph is what distinguishes it. Norms can be researched, citation networks traversed, and document versions resolved to a specific assessment period, which matters in tax more than in most fields because the governing text changes year to year. A research agent classifies the question, searches the graph, resolves versions to the right period, and returns a sourced answer. The listing is written in German. ### Who it is for German tax professionals researching statutes, rulings and guidance by assessment period. ### Tool surface Credentials gate the endpoint, so one is the listing's count. The single tool is described as a research agent that classifies a query, searches the graph and returns a sourced answer. Availability ## Where TaxGraph is listed TaxGraph is listed in the Claude connectors directory only. TaxGraph GmbH has no app under the same domain in the ChatGPT directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them. The MCP server behind a Claude connector is usually the same server a ChatGPT app would need, so the absence is a distribution decision rather than a technical one. Claude listing ## In the Claude connectors directory TaxGraph publishes 1 tool to Claude, a deliberately narrow surface; only 0.7% of the 1,253 Claude-listed connectors expose fewer. The median Claude-listed connector filed under Legal publishes 11, so this one sits 10 tools below its bucket's median, 31st of 33. It falls in the 1-3 tools band, which holds 16.4% of the Claude directory. TaxGraph publishes a remote MCP endpoint. Claude connects to it over HTTP; there is nothing to install locally. Every connector in the Claude directory is remote, all 1,253 of them, so transport is not a differentiator there. Publisher TaxGraph GmbH Verification Community-listed (61.5% of the Claude directory) Filed under Legal Endpoint `https://mcp.tax-graph.com/mcp` Documentation [Publisher setup docs](https://tax-graph.com/product/claude) Published tools 1 · 1-3 tools band Depth rank in Legal 31 of 33 Snapshot August 2026 TaxGraph is community-listed in the Claude directory, the tier 770 of 1,253 connectors sit in (61.5%). It is the default for a self-published server, and says nothing either way about quality. In the publisher's words ## How TaxGraph GmbH describes it > Mit TaxGraph wird das deutsche Steuerrecht für KI-Agenten erschlossen. Die Plattform umfasst Gesetze (EStG, KStG, UStG, AO, ErbStG u. v. m.), BFH-Rechtsprechung, BMF-Schreiben, Richtlinien und Hinweise. Über einen Wissensgraphen lassen sich Normen recherchieren, Zitationsnetzwerke durchlaufen und Dokumentversionen auf jeden Veranlagungszeitraum auflösen. Ein Recherche-Agent klassifiziert die Anfrage, durchsucht den Wissensgraphen, löst Dokumentversionen zum richtigen Veranlagungszeitraum auf und liefert eine belegte Antwort mit Quellenverweisen. TaxGraph ist optimiert für die Recherche-Workflows von Steuerberatern, Kanzleien und Tax-Tech-Anwendungen. Quoted from the connector's own Claude directory listing as captured in August 2026. Node8 did not write it and does not vouch for it. Nearby ## Other Legal connectors ### [Ansvar AI](https://node8.ai/ai-connectors/legal/ansvar-ai/) EU cybersecurity and privacy compliance work with cited sources Claude ### [Avvoka](https://node8.ai/ai-connectors/legal/avvoka/) Generate documents from Avvoka templates and clause libraries Claude ### [BIA Edge](https://node8.ai/ai-connectors/legal/bia-edge/) US immigration law research across 470,000+ decisions and statutes Claude ### [Casepoint](https://node8.ai/ai-connectors/legal/casepoint/) Read-only questions across Casepoint eDiscovery, legal hold and FOIA Claude · ChatGPT ### [Patlytics](https://node8.ai/ai-connectors/legal/patlytics/) Semantic patent search, claim lookup and portfolio listing Claude ### [Sanction Scanner](https://node8.ai/ai-connectors/legal/sanction-scanner/) AML screening against sanctions, PEP and adverse media sources Claude [All 33 Legal connectors](https://node8.ai/ai-connectors/legal/) This is an independent catalogue entry compiled by Node8 from TaxGraph's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with TaxGraph GmbH, and inclusion here is not an endorsement. ## Want your company reachable inside ChatGPT and Claude? Node8 builds MCP servers end to end: deciding which tools are worth exposing, the authentication and permission model, the review submissions, and the onboarding that gets them used. One server serves ChatGPT, Claude, and Microsoft Copilot. [See how it works](https://node8.ai/mcp) Book a strategy session