8 tools from the Macrostrat MCP Server, categorised by risk level.
View the Macrostrat policy →defs Routes giving access to standard fields and dictionaries used in Macrostrat defs-autocomplete Quickly retrieve all definitions matching a query. Limited to 100 results find-columns Find geological stratigraphic columns, rock layers, and geological history for any location worldwide. Use for geology, bedrock, formations, age da... find-units Find geological rock units, formations, bedrock geology, and mineral information for any location worldwide. Use for geology questions, rock types,... lat-lng-to-tile Convert latitude/longitude coordinates to map tile coordinates (x, y) for a given zoom level. Uses the same web mercator projection as MapKit. mineral-info Get information about a mineral, use one property timescale Get information about a time period The Macrostrat MCP server exposes 8 tools across 2 categories: Read, Execute.
Use Intercept, the open-source MCP proxy. Write YAML rules for each tool — rate limits, argument validation, or deny rules — then run Intercept in front of the Macrostrat server.
Macrostrat tools are categorised as Read (7), Execute (1). Each category has a recommended default policy.
Deterministic policy on every MCP tool call. Per-identity grants. Full audit log.