# Bluesky Social Search, Profiles & Post Threads MCP Server (`mutualistic_housing/bluesky-social-search-mcp`) Actor

Search Bluesky / AT Protocol posts, author feeds, actor profiles, follower ratios, and nested discussion threads via zero-proxy Batch JSON API or Standby MCP Server.

- **URL**: https://apify.com/mutualistic_housing/bluesky-social-search-mcp.md
- **Developed by:** [Mutualistic Labs](https://apify.com/mutualistic_housing) (community)
- **Categories:** AI, Social media, MCP servers
- **Stats:** 1 total users, 0 monthly users, 0.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

Pay per usage

This Actor is paid per platform usage. The Actor is free to use, and you only pay for the Apify platform usage, which gets cheaper the higher subscription plan you have.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-usage

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## MCP Server for AI Agents: Bluesky Social Search & Threads

An always-on **Model Context Protocol (MCP) server** and batch Actor for **Bluesky** (AT Protocol): full-text **post search**, **author
feeds**, **profiles with follower-to-following ratios** and complete **reply threads** with parent context. Built for AI agents (Claude
Desktop, Cursor, Windsurf, OpenAI Agents, LangChain), social listening, brand and topic monitoring, influencer research and
conversation analysis.

No proxies, no browser, no logins, no cookies: only the public, unauthenticated AT Protocol AppView XRPC API is called
(`api.bsky.app`, with automatic failover to `public.api.bsky.app`).

### Features

- Four modes: `search_posts`, `author_feed`, `profiles`, `post_thread`.
- Post search with `sort` (`latest` or `top`), author, `lang`, `tag`, linked `domain`, `since` / `until` date range and engagement
  filters (`min_likes`, `min_reposts`, `min_replies`).
- Author feeds for one or many handles, DIDs or `https://bsky.app/profile/...` URLs (up to 10), with the four feed filters.
- Profiles with `followers_count`, `follows_count`, `posts_count`, `follower_to_following_ratio`, bio, labels and pinned post.
- Full threads: parent chain (negative `thread_depth`), anchor post (0) and nested replies (1 to 10 levels).
- Hashtags, links and mentions extracted from rich-text facets; images and link cards from embeds.
- Resilient search: if `searchPosts` is blocked (401/403) on both hosts, the Actor falls back to actor search plus author feeds
  (`source` = `search_fallback`).
- Deterministic de-duplication (`uid`), hard `max_items` and `max_total_charge_usd` caps.

### What you get

| `record_type` | Mode | What it is |
|---|---|---|
| `post` | `search_posts`, `author_feed`, `post_thread` | One post (text, author, counters, hashtags, links, mentions, embed, reply context) |
| `profile` | `profiles` | One account (identity, bio, counters, follower ratio, labels, pinned post) |

### Endpoints

- `GET /` and `GET /health`: readiness probe, returns `{"status":"ok","actor":"bluesky-social-search-mcp",...}`.
- `POST /mcp`: MCP JSON-RPC 2.0 (`initialize`, `ping`, `tools/list`, `tools/call`).

Standby URL: `https://mutualistic-housing--bluesky-social-search-mcp.apify.actor/mcp` (authenticate with your Apify API token).

### Input

| Field | Type | Default |
|---|---|---|
| `mode` | `search_posts`, `author_feed`, `profiles`, `post_thread` | `author_feed` |
| `actors` | string\[] (handles, DIDs or profile URLs, 1 to 10) | none (prefill bsky.app; author_feed/profiles fall back to bsky.app) |
| `query` | string, max 300 chars (required for `search_posts`; keyword filter in `author_feed`; actor search in `profiles`) | none |
| `sort` | `latest` or `top` (mode `search_posts`) | `latest` |
| `feed_filter` | `posts_with_replies`, `posts_no_replies`, `posts_with_media`, `posts_and_author_threads` | `posts_no_replies` |
| `post_urls` | string\[] of post URLs, `at://` URIs or `handle/rkey` pairs (mode `post_thread`, 1 to 25) | none |
| `thread_depth` | integer 0 to 10 | `3` |
| `lang` | language code such as `en` | none |
| `tag` | hashtag without `#`, max 64 chars | none |
| `domain` | linked domain, mode `search_posts` | none |
| `since`, `until` | `YYYY-MM-DD` or ISO 8601 timestamp, mode `search_posts` | none |
| `min_likes`, `min_reposts`, `min_replies` | integer >= 0 (0 means no filter) | none |
| `max_items` | integer 1 to 500 | `25` |
| `max_total_charge_usd` | number or null | no cap |

An empty `{}` input runs: the 25 latest posts (without replies) of `bsky.app`. camelCase aliases (`postUrls`, `threadDepth`,
`feedFilter`, `minLikes`, `minReposts`, `minReplies`, `maxItems`, `maxTotalChargeUsd`) are accepted. Invalid input is rejected with
`INVALID_INPUT_ZERO_CHARGE` before any network call or charge.

#### Batch input examples

Top English posts about a topic with at least 10 likes:

```json
{"mode": "search_posts", "query": "atproto", "sort": "top", "lang": "en", "min_likes": 10, "max_items": 50}
```

Recent posts of two accounts:

```json
{"mode": "author_feed", "actors": ["jay.bsky.team", "https://bsky.app/profile/pfrazee.com"], "max_items": 40}
```

Profiles with follower ratios:

```json
{"mode": "profiles", "actors": ["bsky.app", "danabra.mov", "simonwillison.net"]}
```

Find accounts by keyword:

```json
{"mode": "profiles", "query": "machine learning", "max_items": 20}
```

Full discussion thread with 5 reply levels:

```json
{"mode": "post_thread", "post_urls": ["https://bsky.app/profile/bsky.app/post/3mykvymup7s2l"], "thread_depth": 5}
```

### MCP tools

```json
{
  "mcpServers": {
    "bluesky": {
      "url": "https://mutualistic-housing--bluesky-social-search-mcp.apify.actor/mcp",
      "headers": { "Authorization": "Bearer <APIFY_TOKEN>" }
    }
  }
}
```

- **`search_bluesky_posts`**: `query` (required), `sort`, `actors`, `lang`, `tag`, `min_likes`, `min_reposts`, `min_replies`, `max_items` (default 10).
- **`get_author_feed`**: `actors`, `feed_filter`, `query`, `min_likes`, `min_reposts`, `max_items`.
- **`get_bluesky_profiles`**: `actors`, `query`, `max_items`.
- **`get_post_thread`**: `post_urls` (required), `thread_depth`, `max_items`.
- **`list_preset_accounts`**: no arguments; lists the preset accounts (free).

Example calls:

```bash
curl -X POST "https://mutualistic-housing--bluesky-social-search-mcp.apify.actor/mcp" \
  -H "Authorization: Bearer <APIFY_TOKEN>" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"search_bluesky_posts","arguments":{"query":"atproto","sort":"top","max_items":5}}}'
```

```json
{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"get_author_feed","arguments":{"actors":["jay.bsky.team"],"max_items":10}}}
```

```json
{"jsonrpc":"2.0","id":3,"method":"tools/call","params":{"name":"get_bluesky_profiles","arguments":{"actors":["bsky.app","pfrazee.com"]}}}
```

```json
{"jsonrpc":"2.0","id":4,"method":"tools/call","params":{"name":"get_post_thread","arguments":{"post_urls":["https://bsky.app/profile/bsky.app/post/3mykvymup7s2l"],"thread_depth":3}}}
```

```json
{"jsonrpc":"2.0","id":5,"method":"tools/call","params":{"name":"list_preset_accounts","arguments":{}}}
```

### Output fields

`post`:

| Field | Meaning |
|---|---|
| `record_type`, `uid` | `post`; deterministic SHA-256 identifier |
| `uri`, `cid`, `rkey`, `post_url` | AT URI, content id, record key and public bsky.app URL |
| `author_did`, `author_handle`, `author_display_name`, `author_avatar` | Author identity (avatar is https only) |
| `text`, `created_at`, `indexed_at`, `langs` | Post text, timestamps and declared languages |
| `tags`, `urls`, `mentions` | Hashtags, https links and mentioned DIDs from the rich-text facets |
| `like_count`, `repost_count`, `reply_count`, `quote_count`, `bookmark_count` | Engagement counters (non-negative integers) |
| `engagement_total` | `like_count + repost_count + reply_count + quote_count` (bookmarks excluded) |
| `is_reply`, `reply_root_uri`, `reply_parent_uri` | Reply context |
| `embed_type`, `external_url`, `external_title`, `images` | `images`, `external`, `record`, `record_with_media`, `video` or `other`; link card; full-size image URLs |
| `thread_depth` | Mode `post_thread`: negative = ancestor, 0 = anchor, positive = reply level; otherwise `null` |
| `source` | `search_posts`, `author_feed`, `post_thread` or `search_fallback` |

`profile`:

| Field | Meaning |
|---|---|
| `record_type`, `uid` | `profile`; deterministic SHA-256 identifier |
| `did`, `handle`, `display_name`, `description` | Identity and bio |
| `avatar`, `banner`, `profile_url` | Images (https only) and public profile URL |
| `followers_count`, `follows_count`, `posts_count` | Counters (non-negative integers) |
| `follower_to_following_ratio` | followers / follows rounded half-up to 2 decimals; `null` when `follows_count` is 0 |
| `created_at`, `indexed_at` | Timestamps |
| `labels`, `pinned_post_uri` | Label values (moderation and verification) and the pinned post |
| `source` | `get_profile` or `search_actors` |

Example `post` (shortened):

```json
{
  "record_type": "post", "uri": "at://did:plc:z72i7hdynmk6r22z27h6tvur/app.bsky.feed.post/3mykvymup7s2l",
  "post_url": "https://bsky.app/profile/bsky.app/post/3mykvymup7s2l", "author_handle": "bsky.app",
  "text": "Hello from Bluesky #atproto", "created_at": "2026-10-20T12:00:00.000Z", "langs": ["en"], "tags": ["atproto"],
  "like_count": 3968, "repost_count": 518, "reply_count": 2618, "quote_count": 5939, "bookmark_count": 627,
  "engagement_total": 13043, "is_reply": false, "embed_type": null, "thread_depth": null, "source": "author_feed", "uid": "<sha256>"
}
```

### Preset accounts

Use the handle in `actors`; any other handle, DID or profile URL works too.

| Handle | Account | Category |
|---|---|---|
| `bsky.app` | Bluesky Official | platform |
| `jay.bsky.team` | Jay Graber | leadership |
| `pfrazee.com` | Paul Frazee | protocol |
| `danabra.mov` | Dan Abramov | engineering |
| `simonwillison.net` | Simon Willison | ai |
| `karpathy.bsky.social` | Andrej Karpathy | ai |

### Security and limits

- **Allowlisted hosts only**: outbound requests go exclusively to `api.bsky.app` and `public.api.bsky.app` over https. Redirects to any
  other host, non-https redirects, credentials in URLs and non-443 ports are rejected.
- **SSRF protections**: IP literals, `localhost`, `.local` and `.internal` names are never accepted as actors; DNS results (and the
  connected peer address, checked before any body is read) that are loopback, private, link-local, CGNAT, NAT64, 6to4, Teredo,
  multicast or unspecified are refused. Resolved IP addresses never appear in error messages.
- **Bounds**: at most 500 items per run, 10 actors per call, 25 post URLs in mode `post_thread`, a 120 s global batch deadline, a
  45 s deadline per MCP tool call, a 15 s per-request timeout (connect, TLS, headers and body) and a 2 MiB response size cap.
- **MCP server**: request bodies above 64 KiB return `413`, `POST /mcp` requires `Content-Type: application/json` (`415` otherwise)
  and at most 8 concurrent tool calls run (`503` when busy).
- **Untrusted content**: post text, display names and bios are user-generated. Sanitize them before rendering them in a browser or UI.
- Unknown or deleted accounts and posts return an error entry for that actor or post; rate limits (`429`) and 5xx responses are retried
  with back-off, and per-actor failures never abort other actors.

### Pricing

Pay per event: **$0.001 per result-item** (`result-item`: one de-duplicated post or profile, as a dataset item or an MCP tool result
row); the `actor-start` event is free and `list_preset_accounts` is free. `max_items` and `max_total_charge_usd` are hard caps
enforced in code, so a run never charges more than you configure. Invalid input and empty results are never charged.

### Related MCP Servers by Mutualistic Labs

| Actor | Covers | Store | Standby MCP URL |
|---|---|---|---|
| Multi-ATS Career Jobs Search MCP | Greenhouse, Lever, Ashby, SmartRecruiters, Workable | https://apify.com/mutualistic_housing/multi-ats-career-jobs-mcp | https://mutualistic-housing--multi-ats-career-jobs-mcp.apify.actor/mcp |
| Google Ads Transparency & Ad Spy MCP | SearchCreatives, SearchSuggestions, `content.js` ad-copy & video metadata | https://apify.com/mutualistic_housing/google-ads-transparency-mcp | https://mutualistic-housing--google-ads-transparency-mcp.apify.actor/mcp |
| Multi-Engine Keyword & Autocomplete MCP | Google, YouTube, Amazon, Bing, DuckDuckGo, Brave + `google:suggestrelevance` & search intent | https://apify.com/mutualistic_housing/keyword-autocomplete-mcp | https://mutualistic-housing--keyword-autocomplete-mcp.apify.actor/mcp |
| Discourse Forum Search & Threads MCP | community.openai.com, discuss.huggingface.co, meta.discourse.org + any public Discourse | https://apify.com/mutualistic_housing/discourse-forum-mcp | https://mutualistic-housing--discourse-forum-mcp.apify.actor/mcp |
| Google Trends Realtime & Entities MCP | i0OFE realtime trends, trending/rss news, Knowledge Graph autocomplete entities | https://apify.com/mutualistic_housing/google-trends-realtime-mcp | https://mutualistic-housing--google-trends-realtime-mcp.apify.actor/mcp |
| Substack Newsletter, Posts & Podcast MCP | Publication search, archives & within-newsletter search, full post Markdown, podcast audio URLs | https://apify.com/mutualistic_housing/substack-newsletter-mcp | https://mutualistic-housing--substack-newsletter-mcp.apify.actor/mcp |
| Shopify Store Catalog & Search MCP | Products, variants/SKU/price/availability, collections, predictive search on any public Shopify store | https://apify.com/mutualistic_housing/shopify-store-catalog-mcp | https://mutualistic-housing--shopify-store-catalog-mcp.apify.actor/mcp |
| Bluesky Social Search & Threads MCP | Post search, author feeds, profiles & follower ratios, full reply threads via public AT Protocol AppView | https://apify.com/mutualistic_housing/bluesky-social-search-mcp | https://mutualistic-housing--bluesky-social-search-mcp.apify.actor/mcp |

# Actor input Schema

## `mode` (type: `string`):

author_feed = recent posts of each actor; search_posts = full-text post search (needs query); profiles = actor profiles (explicit actors, or an actor search with query); post_thread = parent chain and replies of explicit post URLs.

## `actors` (type: `array`):

Bluesky handles, DIDs (did:plc:... or did:web:...) or https://bsky.app/profile/... URLs, 1 to 10. Presets: bsky.app, jay.bsky.team, pfrazee.com, danabra.mov, simonwillison.net, karpathy.bsky.social. Empty means bsky.app. In mode search_posts the actors restrict the search to these authors.

## `query` (type: `string`):

Required for mode search_posts (up to 300 characters). In mode author_feed it is an optional keyword filter; in mode profiles without explicit actors it is the actor search query.

## `sort` (type: `string`):

Mode search_posts: latest = newest first, top = most engaging first.

## `feed_filter` (type: `string`):

Mode author_feed: which posts of the author to list.

## `post_urls` (type: `array`):

Mode post_thread: post URLs such as https://bsky.app/profile/bsky.app/post/3mykvymup7s2l, at:// URIs or handle/rkey pairs (1 to 25).

## `thread_depth` (type: `integer`):

Mode post_thread: how many levels of replies to include (0 to 10).

## `lang` (type: `string`):

Keep posts written in this language, ISO 639-1 code such as en.

## `tag` (type: `string`):

Keep posts carrying this hashtag (without the leading #, up to 64 characters).

## `domain` (type: `string`):

Mode search_posts: only posts linking to this domain, e.g. github.com.

## `since` (type: `string`):

Mode search_posts: only posts created at or after this date (YYYY-MM-DD or ISO 8601 timestamp).

## `until` (type: `string`):

Mode search_posts: only posts created before this date (YYYY-MM-DD or ISO 8601 timestamp).

## `min_likes` (type: `integer`):

Keep posts with at least this many likes (0 or empty means no filter).

## `min_reposts` (type: `integer`):

Keep posts with at least this many reposts (0 or empty means no filter).

## `min_replies` (type: `integer`):

Keep posts with at least this many replies (0 or empty means no filter).

## `max_items` (type: `integer`):

Maximum number of result items to return (and be charged for), 1 to 500.

## `max_total_charge_usd` (type: `number`):

Hard spending cap for this run; results are truncated so the charge never exceeds it.

## Actor input object example

```json
{
  "mode": "author_feed",
  "actors": [
    "bsky.app"
  ],
  "sort": "latest",
  "feed_filter": "posts_no_replies",
  "thread_depth": 3,
  "max_items": 25
}
```

# Actor output Schema

## `items` (type: `string`):

Dataset items: post and profile records.

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "actors": [
        "bsky.app"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("mutualistic_housing/bluesky-social-search-mcp").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "actors": ["bsky.app"] }

# Run the Actor and wait for it to finish
run = client.actor("mutualistic_housing/bluesky-social-search-mcp").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "actors": [
    "bsky.app"
  ]
}' |
apify call mutualistic_housing/bluesky-social-search-mcp --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,mutualistic_housing/bluesky-social-search-mcp"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/xr7LYImjfSnhHCxCi/builds/jvOvgQhpYagPwboxD/openapi.json