diff --git a/apps/admin/src/App.tsx b/apps/admin/src/App.tsx
index 54dfb92..1017e0a 100644
--- a/apps/admin/src/App.tsx
+++ b/apps/admin/src/App.tsx
@@ -9,7 +9,6 @@ import {
 } from "react-router-dom";
 import {
   MdAdminPanelSettings,
-  MdAccountTree,
   MdCode,
   MdOpenInNew,
   MdPublic,
@@ -19,7 +18,6 @@ import {
   AdminMergePgcPage,
   AdminPage,
   CrossmatchResultsPage,
-  DataCatalogPage,
   LoginPage,
   RecordCrossmatchDetailsPage,
   SqlQueryPage,
@@ -107,9 +105,6 @@ function Layout() {
               <NavItem to="/tables" label="Tables">
                 <MdTableChart size={20} />
               </NavItem>
-              <NavItem to="/data-catalog" label="Data catalog">
-                <MdAccountTree size={20} />
-              </NavItem>
               <NavItem to="/sql" label="SQL">
                 <MdCode size={20} />
               </NavItem>
@@ -138,12 +133,6 @@ function App() {
             <Route path="/merge-pgc" element={<AdminMergePgcPage />} />
             <Route path="/tables" element={<TablesPage />} />
             <Route path="/sql" element={<SqlQueryPage />} />
-            <Route path="/data-catalog" element={<DataCatalogPage />} />
-            <Route path="/data-catalog/query" element={<DataCatalogPage />} />
-            <Route
-              path="/data-catalog/:schemaName/:tableName"
-              element={<DataCatalogPage />}
-            />
             <Route path="/table/:tableName" element={<TableDetailsPage />} />
             <Route path="/crossmatch" element={<CrossmatchResultsPage />} />
             <Route
diff --git a/apps/admin/src/pages/DataCatalog.tsx b/apps/admin/src/pages/DataCatalog.tsx
deleted file mode 100644
index a22746d..0000000
--- a/apps/admin/src/pages/DataCatalog.tsx
+++ /dev/null
@@ -1,465 +0,0 @@
-import {
-  ReactElement,
-  useEffect,
-  useLayoutEffect,
-  useMemo,
-  useState,
-} from "react";
-import {
-  useMatch,
-  useNavigate,
-  useParams,
-  useSearchParams,
-} from "react-router-dom";
-import { tapSync, tapTables } from "@leda/lib/clients/backend";
-import type {
-  ListTapTablesResponse,
-  TapColumnInfo,
-  TapSchemaEntry,
-  TapSyncResponse,
-  TapTableInfo,
-} from "@leda/lib/clients/backend";
-import { backendClient } from "@leda/lib/clients";
-import { CommonTable, Column, ErrorPage, Loading, Text } from "@leda/lib/ui";
-import { Accordion, TextFilter } from "../components/ui";
-import { useDataFetching } from "@leda/lib/hooks";
-import { Button } from "@leda/lib/ui";
-import classNames from "classnames";
-import { CatalogViewTabs } from "./catalog/CatalogViewTabs";
-import { CatalogSqlPanel } from "@leda/lib/ui";
-import {
-  DEFAULT_SQL_EXAMPLE,
-  defaultSelectForTable,
-  formatApiError,
-  parseSqlPermalink,
-  syncPayloadToTable,
-} from "@leda/lib/tap";
-
-async function fetchTablesList(): Promise<ListTapTablesResponse> {
-  const response = await tapTables({
-    client: backendClient,
-    query: { detail: "max" },
-  });
-  if (response.error) {
-    throw new Error(formatApiError(response.error));
-  }
-  return response.data.data;
-}
-
-async function fetchTableRows(tableName: string): Promise<TapSyncResponse> {
-  const response = await tapSync({
-    client: backendClient,
-    query: {
-      query: `SELECT * FROM ${tableName}`,
-    },
-  });
-  if (response.error) {
-    throw new Error(formatApiError(response.error));
-  }
-  return response.data.data;
-}
-
-function findTableInfo(
-  schemas: TapSchemaEntry[] | undefined,
-  schemaName: string,
-  tableName: string,
-): TapTableInfo | null {
-  const schema = schemas?.find((s) => s.schema_name === schemaName);
-  return schema?.tables.find((t) => t.name === tableName) ?? null;
-}
-
-function filterSchemas(
-  schemas: TapSchemaEntry[] | undefined,
-  query: string,
-): TapSchemaEntry[] {
-  if (!schemas?.length) {
-    return [];
-  }
-  const needle = query.trim().toLowerCase();
-  if (!needle) {
-    return schemas;
-  }
-  return schemas
-    .map((s) => ({
-      ...s,
-      tables: s.tables.filter((t) => {
-        const blob =
-          `${s.schema_name} ${t.name} ${t.description ?? ""}`.toLowerCase();
-        return blob.includes(needle);
-      }),
-    }))
-    .filter((s) => s.tables.length > 0);
-}
-
-interface SchemaSidebarProps {
-  schemas: TapSchemaEntry[];
-  selectedSchema: string | null;
-  selectedTable: string | null;
-  onSelect: (schemaName: string, tableName: string) => void;
-}
-
-function SchemaSidebar({
-  schemas,
-  selectedSchema,
-  selectedTable,
-  onSelect,
-}: SchemaSidebarProps): ReactElement {
-  return (
-    <div className="flex flex-col gap-2 pr-0.5">
-      {schemas.map((schema) => (
-        <Accordion
-          key={`${schema.schema_name}-${selectedSchema === schema.schema_name ? "open" : "closed"}`}
-          title={schema.schema_name}
-          defaultOpen={selectedSchema === schema.schema_name}
-        >
-          <ul>
-            {schema.tables.map((t) => {
-              const active =
-                selectedSchema === schema.schema_name &&
-                selectedTable === t.name;
-              return (
-                <li key={`${schema.schema_name}.${t.name}`}>
-                  <button
-                    type="button"
-                    onClick={() => onSelect(schema.schema_name, t.name)}
-                    className={classNames(
-                      "w-full text-left px-3 py-2 transition-colors border-l-2 rounded-sm",
-                      active
-                        ? "border-accent bg-accent/15"
-                        : "border-transparent hover:bg-surface-2",
-                    )}
-                  >
-                    <Text
-                      style="header"
-                      size="small"
-                      as="span"
-                      className="block"
-                    >
-                      {t.description ?? t.name}
-                    </Text>
-                    {t.description ? (
-                      <Text
-                        size="small"
-                        type="code"
-                        as="span"
-                        className="block mt-0.5"
-                      >
-                        {t.name}
-                      </Text>
-                    ) : null}
-                  </button>
-                </li>
-              );
-            })}
-          </ul>
-        </Accordion>
-      ))}
-    </div>
-  );
-}
-
-function columnMetadataHint(column: TapColumnInfo): ReactElement {
-  return (
-    <div className="text-left space-y-2">
-      {column.description ? <Text as="p">{column.description}</Text> : null}
-      <dl className="grid grid-cols-[auto_1fr] gap-x-3 gap-y-1">
-        <Text as="dt">Type</Text>
-        <Text as="dd" type="code">
-          {column.datatype}
-        </Text>
-        <Text as="dt">Unit</Text>
-        <Text as="dd" type="code">
-          {column.unit ?? "—"}
-        </Text>
-        <Text as="dt">UCD</Text>
-        <Text as="dd" type="code">
-          {column.ucd ?? "—"}
-        </Text>
-      </dl>
-    </div>
-  );
-}
-
-const catalogPanelClassName =
-  "rounded-lg border border-dashed border-border p-8 text-center";
-
-function CatalogBrowsePrompt({
-  onOpenSql,
-}: {
-  onOpenSql: () => void;
-}): ReactElement {
-  return (
-    <div className={catalogPanelClassName}>
-      <Text as="p" size="large">
-        Browse the data
-      </Text>
-      <Text as="p">
-        Choose a table on the left to see column definitions and sample rows, or
-        run a custom query in the SQL editor.
-      </Text>
-      <Button type="button" className="mt-4 mx-auto" onClick={onOpenSql}>
-        Open SQL query
-      </Button>
-    </div>
-  );
-}
-
-interface TableDetailProps {
-  tableInfo: TapTableInfo;
-  syncPayload: TapSyncResponse | null;
-  syncLoading: boolean;
-  syncError: string | null;
-  onOpenSql: () => void;
-}
-
-function TableDetail({
-  tableInfo,
-  syncPayload,
-  syncLoading,
-  syncError,
-  onOpenSql,
-}: TableDetailProps): ReactElement {
-  const metadataColumns = tableInfo.columns ?? [];
-  const syncTable = syncPayload?.resource.table;
-  const syncColumns = syncTable?.columns ?? [];
-
-  const columnsForHints: TapColumnInfo[] = metadataColumns.length
-    ? metadataColumns
-    : syncColumns.map((c) => ({
-        name: c.name,
-        datatype: c.datatype,
-        unit: c.unit ?? null,
-      }));
-
-  const columnDefs: Column[] = columnsForHints.map((c) => ({
-    slug: c.name,
-    hint: columnMetadataHint(c),
-  }));
-
-  const rows = syncPayload ? syncPayloadToTable(syncPayload).rows : [];
-
-  return (
-    <div>
-      <div className="mb-3 flex flex-wrap items-start justify-between gap-3">
-        <div>
-          <Text as="h3" style="header" size="medium">
-            {tableInfo.description ?? (
-              <Text style="header" size="medium" type="code" as="span">
-                {tableInfo.name}
-              </Text>
-            )}
-          </Text>
-          {tableInfo.description ? (
-            <Text as="p" type="code">
-              {tableInfo.name}
-            </Text>
-          ) : null}
-        </div>
-        <Button type="button" onClick={onOpenSql}>
-          Query in SQL editor
-        </Button>
-      </div>
-
-      {syncError ? (
-        <ErrorPage title="Could not load table data" message={syncError} />
-      ) : syncLoading ? (
-        <Loading />
-      ) : (
-        <CommonTable columns={columnDefs} data={rows}>
-          <Text style="header" size="small">
-            Sample rows
-          </Text>
-        </CommonTable>
-      )}
-    </div>
-  );
-}
-
-export function DataCatalogPage(): ReactElement {
-  const { schemaName, tableName } = useParams<{
-    schemaName?: string;
-    tableName?: string;
-  }>();
-  const navigate = useNavigate();
-  const [searchParams, setSearchParams] = useSearchParams();
-  const isQueryMode = Boolean(useMatch("/data-catalog/query"));
-  const permalinkSql = searchParams.get("q");
-  const [filter, setFilter] = useState("");
-  const [sqlDraft, setSqlDraft] = useState(DEFAULT_SQL_EXAMPLE);
-
-  const [sqlSidebarSelection, setSqlSidebarSelection] = useState<{
-    schema: string;
-    table: string;
-  } | null>(null);
-
-  const selectedSchema = isQueryMode
-    ? (sqlSidebarSelection?.schema ?? null)
-    : (schemaName ?? null);
-  const selectedTable = isQueryMode
-    ? (sqlSidebarSelection?.table ?? null)
-    : (tableName ?? null);
-
-  useEffect(() => {
-    document.title = isQueryMode ? "SQL query | LEDA" : "Data catalog | LEDA";
-  }, [isQueryMode]);
-
-  useLayoutEffect(() => {
-    if (!isQueryMode || !permalinkSql) {
-      return;
-    }
-    setSqlDraft(parseSqlPermalink(permalinkSql));
-  }, [isQueryMode, permalinkSql]);
-
-  const {
-    data: tablesPayload,
-    loading: tablesLoading,
-    error: tablesError,
-  } = useDataFetching(() => fetchTablesList(), []);
-
-  const {
-    data: syncPayload,
-    loading: syncLoading,
-    error: syncError,
-  } = useDataFetching((): Promise<TapSyncResponse | null> => {
-    if (!selectedSchema || !selectedTable) {
-      return Promise.resolve(null);
-    }
-    return fetchTableRows(selectedTable);
-  }, [selectedTable ?? ""]);
-
-  const filtered = useMemo(
-    () => filterSchemas(tablesPayload?.schemas, filter),
-    [tablesPayload?.schemas, filter],
-  );
-
-  const selectedTableInfo = useMemo(() => {
-    if (!selectedSchema || !selectedTable) {
-      return null;
-    }
-    return findTableInfo(tablesPayload?.schemas, selectedSchema, selectedTable);
-  }, [tablesPayload?.schemas, selectedSchema, selectedTable]);
-
-  function openSqlEditor(sql?: string): void {
-    if (sql) {
-      setSqlDraft(sql);
-      void navigate({
-        pathname: "/data-catalog/query",
-        search: `?q=${encodeURIComponent(sql)}`,
-      });
-      return;
-    }
-    void navigate({ pathname: "/data-catalog/query", search: "" });
-  }
-
-  function handleQueryRun(sql: string): void {
-    setSearchParams({ q: sql }, { replace: true });
-  }
-
-  function handleSelect(nextSchema: string, nextTable: string): void {
-    if (isQueryMode) {
-      setSqlSidebarSelection({ schema: nextSchema, table: nextTable });
-      setSqlDraft(defaultSelectForTable(nextTable));
-      return;
-    }
-    void navigate(
-      `/data-catalog/${encodeURIComponent(nextSchema)}/${encodeURIComponent(nextTable)}`,
-    );
-  }
-
-  function renderSidebarContent(): ReactElement {
-    if (tablesError && !tablesPayload) {
-      return <ErrorPage title="Could not load tables" message={tablesError} />;
-    }
-    if (tablesLoading && !tablesPayload) {
-      return <Loading />;
-    }
-    if (!filtered.length) {
-      return (
-        <Text as="p" className="p-4">
-          {tablesPayload?.schemas.length
-            ? "No tables match your filter."
-            : "No tables returned by the API."}
-        </Text>
-      );
-    }
-    return (
-      <SchemaSidebar
-        schemas={filtered}
-        selectedSchema={selectedSchema}
-        selectedTable={selectedTable}
-        onSelect={handleSelect}
-      />
-    );
-  }
-
-  function renderDetailContent(): ReactElement {
-    if (isQueryMode) {
-      return (
-        <CatalogSqlPanel
-          sql={sqlDraft}
-          onSqlChange={setSqlDraft}
-          schemas={tablesPayload?.schemas}
-          permalinkRunKey={
-            permalinkSql ? parseSqlPermalink(permalinkSql) : null
-          }
-          onQueryRun={handleQueryRun}
-        />
-      );
-    }
-
-    if (!selectedSchema || !selectedTable) {
-      return <CatalogBrowsePrompt onOpenSql={() => openSqlEditor()} />;
-    }
-
-    if (tablesError && !tablesPayload) {
-      return <ErrorPage title="Could not load tables" message={tablesError} />;
-    }
-
-    if (tablesLoading && !selectedTableInfo) {
-      return <Loading />;
-    }
-
-    if (!selectedTableInfo) {
-      return (
-        <ErrorPage
-          title="Table not found"
-          message={`No metadata for ${selectedTable}`}
-        />
-      );
-    }
-
-    return (
-      <TableDetail
-        tableInfo={selectedTableInfo}
-        syncPayload={syncPayload}
-        syncLoading={syncLoading}
-        syncError={syncError}
-        onOpenSql={() => openSqlEditor(defaultSelectForTable(selectedTable))}
-      />
-    );
-  }
-
-  return (
-    <div className="max-w-[1400px] mx-auto flex flex-col lg:h-[calc(100dvh-4rem)] lg:min-h-0">
-      <div className="flex flex-col lg:flex-row gap-6 lg:flex-1 lg:min-h-0 lg:items-stretch lg:overflow-hidden">
-        <div className="w-full lg:w-[min(100%,380px)] lg:flex-shrink-0 flex flex-col gap-4 lg:min-h-0 lg:h-full lg:max-h-full">
-          <div className="shrink-0">
-            <TextFilter
-              title="Filter tables"
-              value={filter}
-              onChange={setFilter}
-              placeholder="Schema, table name, or description"
-            />
-          </div>
-          <div className="lg:flex-1 lg:min-h-0 lg:overflow-y-auto pr-0.5">
-            {renderSidebarContent()}
-          </div>
-        </div>
-        <div className="flex-grow min-w-0 w-full lg:min-h-0 lg:h-full lg:overflow-y-auto">
-          <CatalogViewTabs />
-          {renderDetailContent()}
-        </div>
-      </div>
-    </div>
-  );
-}
diff --git a/apps/admin/src/pages/TableDetails.tsx b/apps/admin/src/pages/TableDetails.tsx
index 2dd3279..7b72b2e 100644
--- a/apps/admin/src/pages/TableDetails.tsx
+++ b/apps/admin/src/pages/TableDetails.tsx
@@ -31,7 +31,7 @@ import {
   TextFilter,
 } from "../components/ui";
 import { useDataFetching } from "@leda/lib/hooks";
-import { originalDataCatalogLink } from "@leda/lib/astronomy";
+import { sqlQueryLink } from "@leda/lib/astronomy";
 import { formatCaughtError } from "@leda/lib/tap";
 
 const DATA_TYPES: DataType[] = [
@@ -639,7 +639,7 @@ function ColumnInfo(props: ColumnInfoProps): ReactElement {
       title: "View table data",
       onClick: () => {
         void navigate(
-          originalDataCatalogLink(
+          sqlQueryLink(
             selectAllColumnsFromRawdataTable(
               props.tableName,
               selectedColumnInfo,
diff --git a/apps/admin/src/pages/catalog/CatalogViewTabs.tsx b/apps/admin/src/pages/catalog/CatalogViewTabs.tsx
deleted file mode 100644
index c4075a7..0000000
--- a/apps/admin/src/pages/catalog/CatalogViewTabs.tsx
+++ /dev/null
@@ -1,25 +0,0 @@
-import { ReactElement } from "react";
-import { NavLink } from "react-router-dom";
-import classNames from "classnames";
-
-function catalogTabClassName({ isActive }: { isActive: boolean }): string {
-  return classNames(
-    "px-3 py-2 text-sm font-medium border-b-2 -mb-px transition-colors",
-    isActive
-      ? "border-accent text-primary"
-      : "border-transparent text-muted hover:text-primary hover:border-border",
-  );
-}
-
-export function CatalogViewTabs(): ReactElement {
-  return (
-    <nav className="flex gap-1 border-b border-border mb-4">
-      <NavLink to="/data-catalog" end className={catalogTabClassName}>
-        Browse tables
-      </NavLink>
-      <NavLink to="/data-catalog/query" className={catalogTabClassName}>
-        SQL query
-      </NavLink>
-    </nav>
-  );
-}
diff --git a/apps/admin/src/pages/index.ts b/apps/admin/src/pages/index.ts
index b16979b..c10c4af 100644
--- a/apps/admin/src/pages/index.ts
+++ b/apps/admin/src/pages/index.ts
@@ -4,6 +4,5 @@ export { AdminMergePgcPage } from "./AdminMergePgc";
 export { CrossmatchResultsPage } from "./CrossmatchResults";
 export { LoginPage } from "./Login";
 export { RecordCrossmatchDetailsPage } from "./RecordCrossmatchDetails";
-export { DataCatalogPage } from "./DataCatalog";
 export { TablesPage } from "./Tables";
 export { TableDetailsPage } from "./TableDetails";
diff --git a/apps/web/src/App.tsx b/apps/web/src/App.tsx
index e366642..0159b6e 100644
--- a/apps/web/src/App.tsx
+++ b/apps/web/src/App.tsx
@@ -80,12 +80,6 @@ function App() {
             path="/records/:recordId/crossmatch"
             element={<RedirectToAdminPage />}
           />
-          <Route path="/data-catalog" element={<RedirectToAdminPage />} />
-          <Route path="/data-catalog/query" element={<RedirectToAdminPage />} />
-          <Route
-            path="/data-catalog/:schemaName/:tableName"
-            element={<RedirectToAdminPage />}
-          />
           <Route
             path="*"
             element={
diff --git a/apps/web/src/components/catalogs/CatalogCard.tsx b/apps/web/src/components/catalogs/CatalogCard.tsx
index 390c334..9a8b059 100644
--- a/apps/web/src/components/catalogs/CatalogCard.tsx
+++ b/apps/web/src/components/catalogs/CatalogCard.tsx
@@ -10,7 +10,7 @@ import {
   Field,
   SqlQueryEmbed,
 } from "@leda/lib/ui";
-import { getSourceLink, originalDataCatalogLink } from "@leda/lib/astronomy";
+import { getSourceLink, sqlQueryLink } from "@leda/lib/astronomy";
 
 export type { CardAction as CatalogCardAction };
 export { Field, getSourceLink };
@@ -89,14 +89,12 @@ export function CatalogCard({
             <div className="mt-3 flex flex-col gap-3 border-t border-border pt-3">
               <SqlQueryEmbed key={originalDataSql} sql={originalDataSql} />
               <div className="flex justify-end">
-                <AppTooltip content="Open in data catalog">
+                <AppTooltip content="Open in SQL">
                   <Button
                     type="button"
                     className="!p-1.5 cursor-pointer"
-                    onClick={() =>
-                      navigate(originalDataCatalogLink(originalDataSql))
-                    }
-                    hoverText="Open in data catalog"
+                    onClick={() => navigate(sqlQueryLink(originalDataSql))}
+                    hoverText="Open in SQL"
                   >
                     <MdCode className="size-5 text-muted" aria-hidden />
                   </Button>
diff --git a/packages/lib/src/astronomy/index.ts b/packages/lib/src/astronomy/index.ts
index d641fd5..7e27a52 100644
--- a/packages/lib/src/astronomy/index.ts
+++ b/packages/lib/src/astronomy/index.ts
@@ -1,2 +1,2 @@
 export { decomposeDec, decomposeRa, pad2 } from "./sexagesimal";
-export { getSourceLink, originalDataCatalogLink } from "./links";
+export { getSourceLink, sqlQueryLink } from "./links";
diff --git a/packages/lib/src/astronomy/links.ts b/packages/lib/src/astronomy/links.ts
index f5f98b2..bcec31b 100644
--- a/packages/lib/src/astronomy/links.ts
+++ b/packages/lib/src/astronomy/links.ts
@@ -2,6 +2,6 @@ export function getSourceLink(bibcode: string): string {
   return `https://ui.adsabs.harvard.edu/abs/${bibcode}/abstract`;
 }
 
-export function originalDataCatalogLink(sql: string): string {
-  return `/data-catalog/query?q=${encodeURIComponent(sql)}`;
+export function sqlQueryLink(sql: string): string {
+  return `/sql?q=${encodeURIComponent(sql)}`;
 }
diff --git a/packages/lib/src/tap.ts b/packages/lib/src/tap.ts
index bb0bd4d..68dddb4 100644
--- a/packages/lib/src/tap.ts
+++ b/packages/lib/src/tap.ts
@@ -106,10 +106,6 @@ export function syncPayloadToTable(payload: TapSyncResponse): TapTableData {
   return { columns, rows };
 }
 
-export function defaultSelectForTable(tableName: string, limit = 25): string {
-  return `SELECT * FROM ${tableName} LIMIT ${limit}`;
-}
-
 export function parseSqlPermalink(raw: string): string {
   const trimmed = raw.trim();
   if (