zzstoatzz.io
claude up some atproto stuff
restore API contract details cut too aggressively
curl examples document endpoint URLs, parameter names, and response
shapes — not teaching Claude how to use curl. UFOs gets actual query
params (sort, prefix, collection detail) since the worker was guessing
blindly. CORS note in app-patterns. Spacedust gets a concrete websocat
example showing filter construction.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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skills/app-patterns/SKILL.md
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skills/app-patterns/SKILL.md
···
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Typical flow: get initial counts from Constellation, resolve identities/records via Slingshot, then open a Spacedust WebSocket to keep things live.
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For writes and `listRecords`, go through the user's PDS directly (get PDS URL from Slingshot's `resolveMiniDoc`).
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## example: engagement counters
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1. Fetch like/repost counts from Constellation's `getBacklinksCount` (parallel requests, one per source type per post URI)
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2. Resolve author identities via Slingshot's `resolveMiniDoc` to get handles and avatars
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3. Open a Spacedust WebSocket filtered to the post URIs + wanted sources to increment/decrement counts live
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## writes and listRecords
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Go through the user's PDS directly — Slingshot is read-only and doesn't support `listRecords`. Get the PDS URL from `resolveMiniDoc`, then call `com.atproto.repo.listRecords` on that PDS. For writes, use **pdsx** or hit the PDS XRPC endpoints directly with auth.
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## bundled tools
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···
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## notes
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-
- all Microcosm services are unauthenticated
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- all Microcosm services are unauthenticated and support CORS — safe to call directly from client-side apps
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- for lexicons beyond `app.bsky.*`, use UFOs to discover what exists
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- check each service's live docs for the latest API details
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skills/constellation/SKILL.md
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skills/constellation/SKILL.md
···
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# {"total":16}
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```
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**List who interacted** — `getBacklinks` returns `{total, records: [{did, collection, rkey}], cursor}`.
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**List who interacted** — `getBacklinks`:
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```bash
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curl "https://constellation.microcosm.blue/xrpc/blue.microcosm.links.getBacklinks?subject=at://did:plc:hdhoaan3xa3jiuq4fg4mefid/app.bsky.feed.post/3lwcmto4tck2h&source=app.bsky.feed.like:subject.uri&limit=5"
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# {"total":16,"records":[{"did":"did:plc:...","collection":"app.bsky.feed.like","rkey":"3lwd..."},...], "cursor":"..."}
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```
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**Explore all link types** — `/links/all?target={did}` shows every collection+path linking to a DID with counts.
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**Explore all link types** — `/links/all?target={did}`:
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```bash
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curl "https://constellation.microcosm.blue/links/all?target=did:plc:hdhoaan3xa3jiuq4fg4mefid" | jq .
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# shows every collection+path linking to this DID with counts
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```
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**Distinct DIDs** — `/links/distinct-dids` (legacy; XRPC `getBacklinkDids` is in source but not yet deployed). Uses dot-prefixed paths (`.subject.uri`) and `target` param.
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skills/slingshot/SKILL.md
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skills/slingshot/SKILL.md
···
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curl "https://slingshot.microcosm.blue/xrpc/blue.microcosm.repo.getRecordByUri?at_uri=at://did:plc:.../app.bsky.actor.profile/self" | jq .
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```
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**Standard atproto getRecord** also works — `repo` accepts handles or DIDs.
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**Fetch record (standard atproto API)** — `repo` accepts handles or DIDs:
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```bash
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curl "https://slingshot.microcosm.blue/xrpc/com.atproto.repo.getRecord?repo=did:plc:xbtmt2zjwlrfegqvch7fboei&collection=app.bsky.actor.profile&rkey=self"
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# {"uri":"at://...","cid":"bafy...","value":{...}}
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```
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**Resolve handle to DID only** — `com.atproto.identity.resolveHandle`
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**Resolve handle to DID only:**
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```bash
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curl "https://slingshot.microcosm.blue/xrpc/com.atproto.identity.resolveHandle?handle=zzstoatzz.io"
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# {"did":"did:plc:xbtmt2zjwlrfegqvch7fboei"}
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```
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## when to use slingshot vs PDS directly
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+7
skills/spacedust/SKILL.md
+7
skills/spacedust/SKILL.md
···
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{"type": "options_update", "payload": {"wantedSubjectDids": ["did:plc:..."], "wantedSources": ["app.bsky.graph.follow:subject"]}}
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```
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## quick start
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```bash
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# watch for new followers of bsky.app
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websocat "wss://spacedust.microcosm.blue/subscribe?wantedSources=app.bsky.graph.follow:subject&wantedSubjectDids=did:plc:z72i7hdynmk6r22z27h6tvur"
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```
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## notes
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- events are buffered 21 seconds to filter quickly-undone interactions; `instant=true` bypasses this
+22
skills/ufos/SKILL.md
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skills/ufos/SKILL.md
···
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**Source:** https://github.com/at-microcosm/microcosm-rs/tree/main/ufos
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Use it to discover what atproto apps exist beyond Bluesky, check if a lexicon is active, or understand what records look like in an unfamiliar collection. Start with the web explorer for interactive browsing.
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## API endpoints
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**List collections** — sorted by activity:
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```bash
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curl "https://ufos-api.microcosm.blue/collections?sort=dids-estimate&limit=20"
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# sort options: "dids-estimate" (most users) or "records-created" (most records)
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# returns {"collections":[{"nsid":"app.bsky.feed.post","creates":...,"updates":...,"deletes":...,"dids_estimate":...},...]}
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```
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Note: the default sort is alphabetical, which surfaces junk/spam NSIDs first. Always specify `sort=dids-estimate` for useful results.
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**Collection detail** — timeseries and sample records:
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```bash
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curl "https://ufos-api.microcosm.blue/collection/app.bsky.feed.post"
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# returns stats, timeseries data, and sample records for the collection
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```
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**Search collections by prefix:**
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```bash
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curl "https://ufos-api.microcosm.blue/collections?prefix=app.bsky&sort=dids-estimate"
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```