The MCP server's export_graph tool was broken on all formats in 0.6.5/0.6.6:
- json: JSONExporter().export(graph) was called without the required
file_path argument -> TypeError surfaced as {"error": ...}.
- RDF branches: RDFExporter().export_to_rdf(graph, ...) received the
ContextGraph object instead of the canonical kg dict -> AttributeError
(ContextGraph has no 'get').
- All branches: the RDF path printed a rich progress bar to stdout,
corrupting the stdio JSON-RPC framing and hanging the client (observed:
300s timeout over MCP while the same call returns in <1s directly).
Fix: convert via ContextGraph.to_kg_dict() before exporting, serialize the
json branch to a string, and force SEMANTICA_DISABLE_PROGRESS=1 for the
server process — stdout is the protocol channel, not a console.
Tests: tests/test_mcp_server_export_graph.py covers every format, the json
payload shape (entities/relationships), and the progress-disable env var.
Rafal Araszkiewicz
cd2d11a2e7