---
title: Extension Points
---
```js
import {API, POLL_HEAVY, apiFetch, pollDelay, waitForVisible} from "./components/config.js";
```
```js
const epState = (async function*() {
let failures = 0;
while (true) {
let data = [], ok = false;
try {
const [re, rw, rt, rr] = await Promise.all([
apiFetch("/extension-points/"),
apiFetch("/workstreams/"),
apiFetch("/topics/"),
apiFetch("/repos/"),
]);
ok = re.ok && rw.ok && rt.ok && rr.ok;
if (ok) {
const [epList, wsList, topicList, repoList] = await Promise.all([re.json(), rw.json(), rt.json(), rr.json()]);
const topicMap = Object.fromEntries(topicList.map(t => [t.id, t]));
const repoMap = Object.fromEntries(repoList.map(r => [r.id, r]));
const wsMap = Object.fromEntries(wsList.map(w => [w.id, {
...w, domain: repoMap[w.repo_id]?.domain_slug ?? topicMap[w.topic_id]?.domain_slug ?? "unknown",
}]));
data = epList.map(e => ({
...e,
workstream_title: wsMap[e.workstream_id]?.title ?? null,
})).sort((a, b) => {
const pr = {critical: 0, high: 1, medium: 2, low: 3};
const st = {open: 0, in_progress: 1, deferred: 2, addressed: 3, wont_fix: 4};
const sd = (st[a.status] ?? 9) - (st[b.status] ?? 9);
return sd !== 0 ? sd : (pr[a.priority] ?? 9) - (pr[b.priority] ?? 9);
});
}
} catch {}
failures = ok ? 0 : failures + 1;
yield {data, ok, ts: new Date()};
await waitForVisible(pollDelay({ok, base: POLL_HEAVY, failures}));
}
})();
```
```js
const data = epState.data ?? [];
const _ok = epState.ok ?? false;
const _ts = epState.ts;
```
```js
import {MultiSelect} from "./components/multiselect.js";
const STATUSES = ["open", "in_progress", "addressed", "deferred", "wont_fix"];
const PRIORITIES = ["critical", "high", "medium", "low"];
const _domainsResp = await fetch(`${API}/domains/?status=active`).catch(() => null);
const DOMAINS = _domainsResp?.ok
? (await _domainsResp.json()).map(d => d.slug)
: ["custodian", "railiance", "markitect", "coulomb_social", "personhood", "foerster_capabilities"];
const EP_TYPES = ["api", "schema", "mcp", "dashboard", "architecture", "integration", "other"];
const _filtersForm = Inputs.form(
{
status: MultiSelect(STATUSES, {label: "Status", placeholder: "All statuses"}),
priority: MultiSelect(PRIORITIES, {label: "Priority", placeholder: "All priorities"}),
domain: MultiSelect(DOMAINS, {label: "Domain", placeholder: "All domains"}),
ep_type: MultiSelect(EP_TYPES, {label: "Type", placeholder: "All types"}),
},
{
template: ({status, priority, domain, ep_type}) => html`
${status}${priority}${domain}${ep_type}
`,
}
);
```
```js
const filters = Generators.input(_filtersForm);
```
```js
const filtered = data.filter(e =>
(filters.status.length === 0 || filters.status.includes(e.status)) &&
(filters.priority.length === 0 || filters.priority.includes(e.priority)) &&
(filters.domain.length === 0 || filters.domain.includes(e.domain_slug)) &&
(filters.ep_type.length === 0 || filters.ep_type.includes(e.ep_type))
);
```
# Extension Points
```js
import {injectTocTop} from "./components/toc-sidebar.js";
import {withDocHelp} from "./components/doc-overlay.js";
import {openEntityModal} from "./components/entity-modal.js";
// ── KPI sidebar ───────────────────────────────────────────────────────────────
const _open = data.filter(e => e.status === "open" || e.status === "in_progress");
const _addressed = data.filter(e => e.status === "addressed");
const _byType = EP_TYPES.map(t => [t, data.filter(e => e.ep_type === t && e.status === "open").length])
.filter(([,n]) => n > 0);
const _kpiBox = html`
Extension Points
${_byType.length > 0 ? html`
${_byType.map(([t, n]) => html`
${t}
${n}
`)}
` : ""}
`;
// ── Live indicator ─────────────────────────────────────────────────────────────
const _liveEl = html`
●
${_ok
? `Live · updated ${_ts?.toLocaleTimeString()}`
: html`Offline — run: make api`}
`;
withDocHelp(_liveEl, "/docs/live-data");
const _h1 = document.querySelector("#observablehq-main h1");
if (_h1) { _h1.style.position = "relative"; withDocHelp(_h1, "/docs/extensions"); }
injectTocTop("ep-kpi-box", _kpiBox);
injectTocTop("live-indicator", _liveEl);
```
## By Type & Status
```js
import * as Plot from "npm:@observablehq/plot";
const TYPE_COLOR = {
api: "#3b82f6", schema: "#8b5cf6", mcp: "#ec4899",
dashboard: "#f59e0b", architecture: "#10b981", integration: "#6366f1", other: "#94a3b8",
};
const STATUS_COLOR = {
open: "#3b82f6", in_progress: "#f59e0b", addressed: "#22c55e", deferred: "#94a3b8", wont_fix: "#e2e8f0",
};
const byType = EP_TYPES
.map(t => ({type: t, count: filtered.filter(e => e.ep_type === t).length}))
.filter(d => d.count > 0);
const byStatus = STATUSES
.map(s => ({status: s, count: filtered.filter(e => e.status === s).length}))
.filter(d => d.count > 0);
if (filtered.length === 0) {
display(html`No extension points match the current filter.
`);
} else {
display(html`
${Plot.plot({
marks: [
Plot.barX(byType, {y: "type", x: "count", fill: d => TYPE_COLOR[d.type] ?? "#94a3b8", tip: true}),
Plot.ruleX([0]),
],
marginLeft: 100, width: 340, title: "By type",
})}
${Plot.plot({
marks: [
Plot.barX(byStatus, {y: "status", x: "count", fill: d => STATUS_COLOR[d.status] ?? "#94a3b8", tip: true}),
Plot.ruleX([0]),
],
marginLeft: 90, width: 300, title: "By status",
})}
`);
}
```
## All Extension Points
```js
display(_filtersForm);
display(html`${filtered.length} extension points shown.
`);
display(html`${filtered.map(ep => html`
openEntityModal(ep, "ep")}
title="Click to view full details">
${ep.title}
${ep.description ? html`
${ep.description.slice(0, 220)}${ep.description.length > 220 ? " …" : ""}
` : ""}
${ep.location ? html`
${ep.location}
` : ""}
`)}