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PopNx MCP为使用 AI 的人准备的 MCP 服务器 · 用大白话讲清楚

NicheDB

作者:profullstack版本 0.1.0i★ 1i电脑或云端
注册名称dev.nichedb/nichedb

安装方法

What it does

Sources in, feeds out: an open, ever-growing database of real-time public data, enriched.

  • Connects 电脑或云端
  • Account or key No key needed
  • Category 数据库与数据集

安装

选择你使用的 AI 应用,然后复制设置。

通过 5/5 项检查 · 你的提问会经过开发者的服务器(nichedb.dev) · ✓ 命令已检查 2026年11月13日

第一步:你用哪个 AI?

选择你用的应用,步骤会显示在下方。

可连接 Claude · 约 2 分钟

不需要密钥,不用安装程序 · 在 claude.ai 或桌面应用设置一次,即可在聊天中使用 · 免费账户可添加 1 个 · Team/Enterprise 方案由所有者(Owner)添加

  1. 打开 Claude 的 Connectors 页面

    CustomizeConnectors

    CustomizeConnectors1Add2https://…3Add4
  2. 点击“Add” → “Custom” → “Web”,填写这 2 项

    把这里的内容复制到 Claude 中同名的输入框,然后点击 Continue

    Name · 名称NicheDB
    Remote MCP server URL · 地址https://nichedb.dev/mcp

    在 Claude 检测到的登录设置页点击 Continue · Authentication 按作者说明选择(Sign in now、Sign in when needed 或 No sign in),然后点击 Add

  3. 在聊天中开启

    +ConnectorsNicheDB

  4. 试一试

    用 NicheDB 告诉我你能帮我做什么,然后做一件给我看

    ✓ 如果 Claude 说正在使用 NicheDB,或回答中出现 NicheDB 的工具名称,就表示连接成功

菜单名称已于 2026年11月11日 对照 Anthropic 帮助页面核实 · 你的界面可能因版本略有不同

能否连接 ChatGPT 取决于方案

完整 MCP:网页版 ChatGPT Business、Enterprise 或 Edu · Pro:以读取/获取权限连接,修改数据的工具可能用不了 · Plus:官方文档尚未确认,如果在插件页看到添加自定义 MCP 的选项可以试试 · 仅限网页

  1. 在网页版 ChatGPT 打开添加 MCP 的页面

    Plugins+Add custom MCP server

    ChatGPTPlugins1+2https://…3Create4
  2. 填写名称和地址

    输入名称,在 Connection 下粘贴地址,勾选风险提示,然后点击 Create as a plugin

    Name · 名称NicheDB
    Connection · 地址https://nichedb.dev/mcp
  3. 在聊天中选择 NicheDB

    开启新聊天,输入前先从插件列表中选择 NicheDB

  4. 试一试

    用 NicheDB 告诉我你能帮我做什么,然后做一件给我看

    ✓ 如果 ChatGPT 说正在使用 NicheDB,或回答中出现 NicheDB 的工具名称,就表示连接成功

菜单名称已于 2026年11月11日 对照 OpenAI 帮助页面核实 · 你的界面可能因版本略有不同

可连接 Claude Code · 约 2 分钟

不需要密钥,不用安装程序

  1. 打开终端

    Mac:按 Command+空格,输入 Terminal · Windows:打开 PowerShell

  2. 粘贴这条命令并按 Enter

    claude mcp add --transport http --scope user nichedb https://nichedb.dev/mcp
  3. 在 Claude Code 中输入 /mcp

    应能看到 NicheDB 在列表中并显示已连接

  4. 试一试

    用 NicheDB 告诉我你能帮我做什么,然后做一件给我看

    ✓ 如果 Claude Code 说正在使用 NicheDB,或回答中出现 NicheDB 的工具名称,就表示连接成功

菜单名称已于 2026年11月11日 对照 Anthropic 帮助页面核实 · 你的界面可能因版本略有不同

可连接 Cursor · 约 2 分钟

不需要密钥,不用安装程序

  1. 点击这个按钮打开 Cursor

    在 Cursor 中打开

    Cursor 会请你确认安装,点击 Install

  2. 在 Cursor 中以 Agent 模式打开 AI 聊天

  3. 试一试

    用 NicheDB 告诉我你能帮我做什么,然后做一件给我看

    ✓ 如果 Cursor 说正在使用 NicheDB,或回答中出现 NicheDB 的工具名称,就表示连接成功

菜单名称已于 2026年11月11日 对照 Cursor 帮助页面核实 · 你的界面可能因版本略有不同

可连接 VS Code · 约 2 分钟

不需要密钥,不用安装程序

  1. 点击这个按钮打开 VS Code

    在 VS Code 中打开

    VS Code 会请你确认安装,点击 Install

  2. 在 VS Code 中以 Agent 模式打开 AI 聊天

  3. 试一试

    用 NicheDB 告诉我你能帮我做什么,然后做一件给我看

    ✓ 如果 VS Code 说正在使用 NicheDB,或回答中出现 NicheDB 的工具名称,就表示连接成功

菜单名称已于 2026年11月11日 对照 VS Code 帮助页面核实 · 你的界面可能因版本略有不同

其他支持 MCP 的应用(如 Windsurf、Zed、Gemini CLI)添加方式各不相同,请在应用列表中查看

查看所有支持 MCP 的应用 →

通过网页连接的应用使用的地址

地址https://nichedb.dev/mcp

JSON 设置在下方“开发者专用”中

卡住了?问问正在用 NicheDB 的人💬 讨论 →
开发者专用:终端命令和 JSON 设置

通过网页连接

Claude Code

claude mcp add --transport http --scope user nichedb https://nichedb.dev/mcp

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "nichedb": {
      "url": "https://nichedb.dev/mcp"
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "nichedb": {
      "type": "http",
      "url": "https://nichedb.dev/mcp"
    }
  }
}

安装在电脑上

Claude Code

claude mcp add --scope user nichedb -- npx -y @profullstack/nichedb mcp --api https://nichedb.dev

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "nichedb": {
      "command": "npx",
      "args": [
        "-y",
        "@profullstack/nichedb",
        "mcp",
        "--api",
        "https://nichedb.dev"
      ]
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "nichedb": {
      "command": "npx",
      "args": [
        "-y",
        "@profullstack/nichedb",
        "mcp",
        "--api",
        "https://nichedb.dev"
      ]
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "nichedb": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@profullstack/nichedb",
        "mcp",
        "--api",
        "https://nichedb.dev"
      ]
    }
  }
}

这些设置是根据作者在注册中心的条目生成的。如果 README 的写法不同,请以 README 为准。

一览

每周下载量i
494/周
已验证域名
✓ nichedb.dev
连接方式
电脑或云端
传输方式
stdio, streamable-http
最新版本i
0.1.0
发布到注册中心i
2026年9月6日
代码最后更新i
2026年11月11日
作者
profullstack
软件包
npm: @profullstack/nichedb
注册状态
活跃

哪些应用可以使用它

依据这个服务器的连接方式和各应用自己的文档,检查于 2026年11月10日。

通过互联网连接,适用于

ClaudeChatGPTGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatOpen WebUIRaycast

在你的电脑上运行,适用于

ClaudeGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatRaycast

全部应用及其优缺点 →

它能做什么

工具名称和描述与服务器在 2026年11月9日 报告的完全一致。这些内容由作者撰写,不是我们写的;我们以纯文本形式显示。

  • stats

    What this deployment holds: collections, sources, items, items added today, feeds.

  • list_collections

    The collections (niches) with their source, feed and item counts.

  • list_adapters

    Every adapter this deployment can run, with the config fields each takes. Use before add_source.

  • list_enrichers

    Every enricher (YouTube videos, Wikipedia, repo stats, downloads, company profiles, TL;DRs) and which collections turn it on by default. Items carry their results under `enrichment`.

  • list_sources

    Sources with status, last run and item counts. Optionally one collection.

  • list_feeds

    Public feeds, most followed first. Optionally one collection.

  • feed_items

    What a feed selects, newest first. Page with before_id.

  • recent_items

    Newest items, optionally narrowed to a collection, source or kind.

  • upcoming

    Items dated in the future (releases, launches, deadlines), soonest first.

  • search_items

    Full-text search over titles, summaries and tags. Use this first when you know a name.

  • match_items

    Which title, channel or fixture is this name? Give a file name, a release name or a playlist entry ("Top.Gun.Maverick.2022.1080p.mkv", "US: ESPN2 HD"); it is cleaned (year, season and episode, quality tags, playlist decorations) and matched by similarity. A matchup ("NFL: Chiefs

  • get_item

    One item with its full adapter payload.

  • population

    Population and demography, drilled down from the world to the ZIP code. Give a `key` (us, us-ca, us-ca-los-angeles, gb, gb-england-london), a US `zip`, or a place name in `q`; no argument is the world. Answers with the area (population, year, measures: age, income, home value, re

  • where_to_buy_book

    Where to buy a book. Give an `isbn` (10 or 13 digits, hyphens fine), or a `title` and `author`, or `item` (a books-collection item id). Answers with the edition from Open Library (title, authors, publisher, pages, cover), `online`: links at Amazon, Bookshop.org, Barnes & Noble, B

  • create_feed

    Save a query as a feed (needs a key). Sources, kinds and tags narrow; q is a text match; upcoming keeps only future-dated items.

  • follow_feed

    Follow a feed as the key owner (needs a key). Channels: webpush, email, webhook.

  • list_webhooks

    The key owner's account webhook endpoints (never their secrets) and the event types this site emits. Needs a key.

  • create_webhook

    Add an account webhook: signed POSTs (Standard Webhooks + CloudEvents) to an https URL for events such as feed.item.published (new items in feeds you follow), feed.followed, feed.created, submission.approved. Patterns like feed.* work; omit events for all. Returns the signing sec

  • update_webhook

    Change an account webhook: url, events, description, or enabled (true turns it back on and clears its failure count). Needs a key.

  • delete_webhook

    Remove an account webhook and its delivery log. Needs a key.

  • test_webhook

    Send a webhook.test event to one of your endpoints now and report the HTTP status. Needs a key.

  • rotate_webhook_secret

    Replace a webhook signing secret; the old one stops working at once. Returns the new secret. Needs a key.

  • webhook_deliveries

    Recent webhook deliveries with status, attempts, last error and payload: for one endpoint, or all of yours. Needs a key.

  • submit_feed

    Suggest an RSS or Atom feed for the index. No key needed. An admin reviews every suggestion before anything is fetched; approved podcast feeds are handed to rssamplifier, everything else becomes a source here.

  • search_profiles

    People: one entry per person assembled from every app that serves their OpenProfile.md (podcasters from p0dcasters, public profiles from OutreachGraph). Search by name, headline or anything in the document; newest change first. Each answer carries the page, the openprofile.md URL

  • find_profile_by_linkedin

    The public profile a LinkedIn profile or company URL belongs to (linkedin.com/in/… or /company/…), or null. LinkedIn only: profiles are never looked up by email.

  • get_profile

    One person by id, ` - ` or handle: the parsed view and the OpenProfile.md as served.

  • claim_profile

    Claim a profile as the key owner (needs a key). Proven when the key owner’s email is one the profile lists, or when the person’s site or show page links back to the profile’s nichedb page. An admin may claim on behalf of an email.

  • update_profile

    Edit a profile you own (needs a key). Send `markdown`, a whole OpenProfile.md that replaces what you wrote before, or any of `name`, `headline`, `emoji`, `pronouns`, `web`, `identity` (key: value, null removes), `sections` (name: body, `none` removes), `handle`, `public`. What yo

  • add_source

    Add a source: an adapter with a config, fetched on a schedule (needs a key; admins and Pro). Call list_adapters first for the fields.

  • run_source

    Fetch a source now instead of waiting for its schedule (needs a key; owner or admin).

  • search_tlds

    Top-level domains: every label in IANA's root, with type, registry, RDAP server and each registrar's one-year register/renew/transfer price (Porkbun, Dynadot, Cloudflare, OVHcloud). Sorted by renewal by default, because the first year is a promotion. `best` is the cheapest USD pr

  • get_tld

    One top-level domain: type, registry, RDAP server, when it entered or left the root, every registrar price (register, renew, transfer, restore, promotions, privacy, restrictions) and its change history.

  • tld_changes

    Top-level domains added to or removed from IANA's root, newest first, with the IANA list version each happened in. Nobody else publishes this diff.

  • check_domain

    Is a domain name registered? Asks each registry over RDAP. Give `name` as a full name (foo.watches), or a bare word with `tlds` (foo + com,dev,io), or several names comma separated. Each answer is registered (with registrar and expiry), not_registered, or unknown. not_registered

  • business_standing

    Is a business on anybody's list? Give its `name`, and any of `domain`, `state` (two letters), `number` (state entity number) and `ein`. Answers with `standing` (flagged, incomplete or clear; clear only when every list was checked and found nothing), the `findings` behind it, and

  • reputation_lookup

    Is an IP address or a domain on a blocklist? Give `indicator` (an IPv4/IPv6 address or a domain; a URL is reduced to its host). Answers `listed`, a rough 0-100 `score` with the `reasons` behind it, the nichedb /traffic record (addresses our own servers banned and a person approve

  • vuln_lookup

    Everything known about one vulnerability, as an OpenVuln record (a valid OSV record). Give `id`: a CVE (CVE-2026-12537), GHSA, OSV, PYSEC, GO, RUSTSEC, MAL (malicious package) or NDB (nichedb.dev write-up) id. Answers OSV fields (`aliases`, `summary`, `details`, `affected` with v

  • traffic_list

    The nichedb /traffic blocklist: IP addresses our own servers banned for exploit attempts, scanning, brute force or spam, each published only after a reviewer (a person, or riotcoder applying published rules) read the evidence and approved it. Newest approvals first. Optional `day

  • redeem_code

    Redeem a credit code (CR-XXXX-XXXX-XXXX-XXXX) for the key owner. A code is worth days of Premium, added after any term already held. Needs a key.

  • list_invites

    The key owner's invites: how many are left of the quota, and each invite with its status (open, used, expired, revoked). Needs a key.

  • create_invite

    Make one invite link as the key owner. Invites are scarce (a few per account); when the invited person signs up, both get days of Premium. The link is returned once. Needs a key.

基础检查i

我们检查的是任何人都能看到的信息;我们没有阅读代码。不适用的检查项不计入总数。 · 检查于 2026年11月13日

  • ✓ 通过

    作者与仓库一致

    注册名称已通过域名 nichedb.dev 验证(注册中心会核实域名所有权)

  • ✓ 通过

    仍在维护

    代码最后更新于前天

  • ✓ 通过

    有许可证

    使用 MIT

  • ✓ 通过

    端点有响应

    在 444 毫秒内响应(HTTP 200)

  • – 不适用

    使用 OAuth 登录

    无需登录

  • ✓ 通过

    工具描述中没有隐藏指令

    已读取 42 个工具描述,未发现针对 AI 的隐藏指令

讨论

提问、分享技巧或报告无法使用。按“有帮助”数量排序。

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与“数据库与数据集”中的其他服务器比较i

  • 星标数多于此分类中其他 1185 个服务器的 79%
  • 发布到注册中心的时间比此分类中其他 1185 个服务器的 27% 更新
  • 基础检查结果等于或优于此分类中其他 1185 个服务器的 100%

与注册中心里这个分类中所有活跃的服务器比较。只有当发布者拥有该仓库时,星标数才计入。

常见问题

NicheDB 安全吗?

它在 5 项适用的基础检查中通过了 5 项。我们没有阅读代码。在添加密钥或令牌之前,请先看看这个服务器要求哪些权限,并使用只具备所需权限的密钥。

它需要哪些密钥或代码?

注册中心没有列出必需的密钥,不过有些服务器会在首次使用时要求你登录。

它在我的电脑上运行还是在云端?

两种方式都可以:安装在你的电脑上,或者连接云端版本。

它还在维护吗?

GitHub 仓库最后更新于前天,最新版本(0.1.0)于2个月前进入注册中心。

哪些应用可以使用它?

支持 MCP 的应用,例如 Claude Desktop、Claude Code、Cursor 和 VS Code。它通过 URL 连接,因此也能用于接受远程 MCP 的应用,例如网页版 ChatGPT(Business 及以上为完整 MCP;Pro 为只读)。

有什么可以替代它?

同一分类中有:Dbx, MCP Toolbox for Databases, MCP Toolbox for Databases

同类别的其他选择

同一分类中其他作者的服务器,按星标数排序。

如何看卡片:↓ 每周下载量i★ GitHub 星标i三大支柱:评价 · 检查 · 使用情况i更新 = 最新版本发布到注册中心的时间i

Dbx

Query databases from AI agents using connections configured in DBX.

作者:t8y2广泛使用↓ 9446/周★ 3万6个月前更新

在你的电脑上运行

MCP Toolbox for Databases

MCP Toolbox for Databases enables your agent to connect to your database.

作者:googleapis广泛使用★ 1.7万今天更新

在你的电脑上运行

MCP Toolbox for Databases

MCP Toolbox for Databases enables your agent to connect to your database.

作者:googleapis广泛使用★ 1.7万8个月前更新

在你的电脑上运行

作者的 README

打开 README

按原文从作者的仓库复制。PopNx MCP 没有审查或背书其内容。HTML、图片和脚本已被移除。链接会离开本站。

NicheDB

Sources in, feeds out. An open platform for databases that only ever grow: game releases, package registries, government filings, and any other public data with a big seed and daily growth. One Postgres, one Redis, and every row reachable by web, RSS, JSON, API, CLI and MCP.

The first deployment is nichedb.dev. Run your own on anything that has Postgres and Redis.

The model

ThingWhat it is
collectionA niche: games, packages, filings.
sourceOne adapter pointed at one upstream, fetched on its own cadence. Steam's new-releases list. The npm changes feed. EDGAR Form D filings.
itemOne row a source produced. Title, URL, when (with time_known and precision), tags, and the adapter's payload in data.
feedA saved query over a collection. Has a page, RSS and JSON Feed renderings, an API endpoint, and followers who are told when it changes by push, email or signed webhook.

Adapters are one file each in packages/adapters/src. One hundred and sixty-one ship today across forty-six collections:

CollectionAdaptersKey needed
gamessteam, steam-news, igdb, igdb-catalog (every game IGDB knows, walked by id then kept current from updated_at), wikidata-games, steam-catalogIGDB only (Twitch client)
packagesnpm, pypi, crates, go-modules, huggingface, github-releases (runtimes and frameworks, and NIST's own software under usnistgov as github-releases-nist)no (GitHub token optional)
filingsedgar, federal-registerno
lawcourtlistener (the newest opinions from the Atom feeds: all courts plus each court's own feed in rotation, or one court), courtlistener-oral-arguments (the podcast, with the MP3), courtlistener-api (dockets, judges and financial disclosures, one request a run inside the free tier's 125 a day), courtlistener-catalog (every court, judge with education and party, disclosure with what it reports, oral argument, opinion cluster with its reporter citations as tags, and the FJC database, from the quarterly bulk dumps; dockets opt-in)COURTLISTENER_TOKEN for the API sources only; the feeds and the dumps are keyless and public domain
musicmusicbrainz, musicbrainz-catalog, discogs-catalogno
booksopenlibrary, gutenberg-catalog, librivox-catalog, openlibrary-catalogno
tabletopscryfall-sets, scryfall-cardsno
spacelaunch-libraryno
chesslichess-broadcastsno
alertsusgs-earthquakes, gdacsno
weathernws-alerts, nhc-cyclones, swpc-space-weather, eonet-eventsno
outagesstatuspage (any Statuspage host)no
extensionsfirefox-addons, vscode-extensionsno
healthopenfda-recalls, clinical-trialsno
researcharxiv, crossref, openalex (works newest first under a topic or a search; openalex-algorithms seeded), nist-datasets (every dataset on data.nist.gov, by last revision), nist-csrc-drafts (NIST security drafts open for comment, marked closed in place)no
automotivefueleconomy-catalog, nhtsa-recalls, nhtsa-complaints, nhtsa-safety-ratingsno
marketsiso-mic-exchanges, alpaca-corporate-actions, alpaca-news, alpaca-assets, equity-history, nasdaq-halts, ecb-fx-rates, sec-fundamentalsAlpaca (APCA_API_KEY_ID, APCA_API_SECRET_KEY, APCA_FEED iex or sip); SEC wants CONTACT_EMAIL in the user agent
cryptocoingecko-assets, crypto-pairskeyless (COINGECKO_API_KEY optional; CRYPTO_PROXY_URL for Binance.US from a datacenter)
blockchainblockchain-providers: a reviewed directory of free public APIs, with chains, capabilities, endpoints, documentation and access limits; /blockchain and /c/blockchainno; upstream limits and production suitability are recorded per provider
crimesocrata-crime, uk-police-crime, fbi-crime-estimates, police-updates (39 California police feeds; source coverage)FBI only (free api.data.gov key)
public-moneyusaspending-awards, ocds-tenders, ted-noticesno
housinguk-land-registry, freddie-mac-rates, building-permits, ruuster (agent saved searches)no
jobsbls-series, eurostat, warn-layoffs, agenticjobsno
populationworldbank-population (every country, World Bank WDI, CC BY 4.0), census-acs (every US state, city and ZIP code from the ACS 5-year Summary File, public domain), geonames-cities (cities of 15,000+ everywhere else and their regions, CC BY 4.0); browse the tree at /population, or /api/v1/population/{key}no
eventsmusicbrainz-events (about 126,000 concerts, festivals and shows from the MusicBrainz JSON dumps: performers by role, venue with coordinates, date and local start time, setlist, ticketing and setlist.fm links; CC0), wikidata-festivals (every music festival on Wikidata with website, place, genres and its MusicBrainz series; CC0). No ticket prices: Ticketmaster and SeatGeek terms forbid storing their data, and StubHub and Vivid Seats offer only affiliate programmesno
radioradiobrowser (about 67,000 internet radio stations from radio-browser.info, 60,000 playing: stream and homepage, country, language, genres, codec and bitrate, last stream check, votes and last-day listens, coordinates where known; free to use, swept daily)no
ai-incidentsrogue-ai-incidents, rogue-ai-research, aiid-reportsno
newsnewsfeed (newsroom desks, and NIST's 28 topic, event and blog feeds as nist-news), gdelt, rssamplifier, brisk, news-channelsno
domainsntld-totals, ntld-tlds, ntld-launches, ntld-changesno
podcastspodcasts, p0dcasters, podcastindex-catalogno
aviationfaa-nas-status, aviation-hazards, aviation-metar, ntsb-accidents, adsb-flightsno (NTSB needs mdbtools + unzip, in the Dockerfile)
waternwps-river-gauges, coops-water-levels, drought-monitor, ndbc-buoys, nws-surf-zoneno
consumer-financecfpb-complaints, fdic-institutions, fdic-structure-changesno
dealsslickdeals, dealnews, dealcatcher, bensbargains, reddit-dealsno
sportsespn-catalogue, espn-schedule, espn-live, espn-plays, livetennis, sportsdb-tv, sportsdb-leagues, sportsdb-teams, sportsdb-live, sportsdb-scheduleLive Tennis; TheSportsDB (SPORTSDB_API_KEY: on the shared key 3 every list answers one row and there is no live feed at all, on a subscriber key the catalogues are walked from lists and sportsdb-live and sportsdb-schedule turn on); ESPN is keyless (SPORTS_PROXY_URL for cloud egress)
screentmdb-releases, tvmaze-schedule, tvmaze-catalog (every show TVmaze knows, CC BY-SA, walked once then kept current from /updates/shows), anilist-airing, imdb-ratings, wikidata-films, kitsu-anime, thetvdb-catalog (every series on TheTVDB, THETVDB_API_KEY, attribution link required)TMDB only
channelsiptv-org-channelsno
saassaasrow, opensaas (nichedb.dev first; any service serving /.well-known/opensaas.json)no
marketplaced0rz, bl0ggersno
ai-mediaaiornotno
forumstsbbno
couponsc0upons (what c0upons.com took in on its own: submitted codes and its r/couponcodes listings; rows it copied from deals are not read back)no
dhtbittorrented-dht (adult material left out)bittorrented.com's Supabase URL and publishable key (BITTORRENTED_SUPABASE_URL, BITTORRENTED_SUPABASE_KEY); paused without them
hostingfindhost, buyvps, vultr-plans, linode-types, scaleway-instances, ovh-vps, storefront (WHMCS, Blesta and WooCommerce order forms), lowendbox, openserver; hetzner-plans, digitalocean-sizes, upcloud-plansno for the first eight (FindHost data is CC BY 4.0: credit FindHost, findhost.app; OBSCURA_MCP_URL optional for JavaScript-only shops); Hetzner (HETZNER_API_TOKEN), DigitalOcean (DIGITALOCEAN_TOKEN) and UpCloud (UPCLOUD_USERNAME, UPCLOUD_PASSWORD) each need a read-only credential and stay paused without one
threatsopenthreat (ThreatCrush first; any reporter serving /.well-known/openthreat.json), nvd (every CVE, by lastModified every 15 minutes; "This product uses the NVD API but is not endorsed or certified by the NVD"), surbl (the SURBL lists as a catalogue, and the domains you name looked up in multi.surbl.org; free DNS lookups under SURBL's usage policy, the whole list is only sold as a feed)no (NVD_API_KEY optional, ten times the rate)
profilesopenprofiles (p0dcasters and OutreachGraph listings first; any app that lists the OpenProfile.md files it serves), sportarr-persons (Sportarr's 111k names, kept only when Wikidata knows the person as a human with a sport, with their socials), sportsdb-players, installmap-yc-people (YC companies that run an MCP server, as organizations with their accounts, and their founders)no
The way out (OpenSaaS)

nichedb serves its own OpenSaaS descriptor at /.well-known/opensaas.json: the plans as the checkout sells them (prepaid terms, none renews itself) and the actions that are real here, each as the page a person opens and the endpoint an agent calls with an OpenAccess bearer: subscribe (POST /api/v1/billing/subscribe, answers pending with the checkout page), cancel (POST /api/v1/billing/cancel, one click, today, nothing refunded), unsubscribe (a page: /settings, where the follows that send mail are turned off), export (POST /api/v1/account/export, one JSON document at once), delete (POST /api/v1/account/delete, confirmed by a link to the account email, immediate, nothing kept). The same doors as pages: /account/billing, /account/export, /account/delete. The opensaas adapter reads other services' descriptors into the saas collection, one row per plan with the service's own steps and confirm for the way in and the way out shown beside each other.

People (/c/profiles)

One entry per person, assembled from every app that serves their OpenProfile.md. The openprofiles adapter pages each app's listing (/api/openprofiles?since=…), fetches every document from the host that listed it, and merges documents that share an identity key (the Web URL, any Accounts URL, Email, DID) into one profile; a shared name alone never merges. The page is /c/profiles/ - (the id resolves, the name is cosmetic, a wrong name 301s) or /c/profiles/ once the owner took one, and …/openprofile.md next to it is the file, text/markdown, CORS open, with on the page.

A person claims their entry with This is me (proven by the email the profile lists, or a link back to the page from their site or show; admins may claim for an email) and edits it from the page, PUT /api/v1/profiles/ (JSON overlay or a whole text/markdown file), nichedb profile edit, or the update_profile MCP tool, with a session, an API key, or an OpenAccess token carrying openprofile:edit. What the owner writes is an overlay that wins over every source and survives every re-read; a section written as none is removed. The Broadcast and Guest sections (OpenBroadcast, OpenGuest) are what the podcasters and guests feeds cut on.

The page shows the three identity fields OpenProfile 0.4 makes defaults, read from the Markdown: Emoji (one grapheme or an OpenEmoji :shortcode:) beside the name, Pronouns as written beside the handle (absent is unstated, never inferred), and Web (with Website, Homepage and Site read as the s

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