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Truncate long descriptions with show more/less toggle

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Jeremiah Lowin 2026-03-23 15:28:17 -04:00
commit 1d20fc5221
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1 changed files with 24 additions and 12 deletions
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36
src/fastmcp/cli/apps_dev.py
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@ -959,8 +959,6 @@ def _build_picker_html(tools: list[dict[str, Any]]) -> str:
from prefab_ui.actions import Fetch, OpenLink, SetState, ShowToast
from prefab_ui.app import PrefabApp
from prefab_ui.components import (
Accordion,
AccordionItem,
Button,
Column,
Heading,
@ -1030,19 +1028,33 @@ def _build_picker_html(tools: list[dict[str, Any]]) -> str:
on_error = ShowToast(Rx("$error"), variant="error") # type: ignore[arg-type]
_desc_max_lines = 10
with Page(name, value=name), Column(gap=4):
if desc:
# Show the first paragraph inline; collapse the
# rest into an expandable accordion.
parts = desc.split("\n\n", 1)
lines = desc.split("\n")
md_css = "text-sm text-muted-foreground"
Muted(parts[0])
if len(parts) > 1:
with (
Accordion(collapsible=True, css_class=md_css),
AccordionItem(title="Details"),
):
Markdown(parts[1])
if len(lines) <= _desc_max_lines:
Markdown(desc, css_class=md_css)
else:
desc_state = f"_desc_{name}"
short = "\n".join(lines[:_desc_max_lines])
with Pages(name=desc_state, value="short"):
with Page("short", value="short"):
Markdown(short, css_class=md_css)
Button(
"Show more",
variant="link",
size="sm",
on_click=SetState(desc_state, "full"),
)
with Page("full", value="full"):
Markdown(desc, css_class=md_css)
Button(
"Show less",
variant="link",
size="sm",
on_click=SetState(desc_state, "short"),
)
with Tabs(variant="line"):
with (
Tab("Form"),