lightning-fm-mcp
Lightning FM :: MCP 服务器
一个用于 Lightning FM 音乐目录的 MCP 服务器——供智能体搜索曲目、查找艺术家,并查看电台正在播放的内容。
没有单独的智能体 API。此服务器读取的正是人类客户端所读取的内容:来自公共 Nostr 中继的 kind 31337 曲目事件和 kind 0 个人资料、来自公共 Blossom 服务器的音频和图片,以及电台在每次曲目切换时发布的 kind 30311 实时活动事件。每首曲目都由艺术家自己的密钥签名——这是权威目录,而非平台为智能体维护的精选子集。
使用
将其添加到你的 MCP 客户端的服务器配置中。对于 Claude Code 或 Claude Desktop:
{
"mcpServers": {
"lightning-fm": {
"command": "npx",
"args": ["-y", "lightning-fm-mcp"]
}
}
}无需安装、无需 API 密钥、无需账户。默认情况下,它会与 relay.lightning.fm 和 media.lightning.fm 通信——如需指向其他位置,请参阅 配置。
Related MCP server: Maximum Sats MCP
工具
search_catalog— 对整个目录进行自由文本搜索,并支持流派/标签筛选。将所有筛选条件留空即可按最新优先浏览。get_artist— 按显示名称(部分匹配)、十六进制公钥或 npub 查找艺术家。返回其个人资料和完整唱片目录。get_now_playing— 当前正在播出的内容,以及流媒体 URL。
配置
所有环境变量都是可选的——默认值指向生产环境。这里没有任何秘密;此服务器是只读的,从不签名或发布任何内容。
变量 | 默认值 | 作用 |
|
| 要查询的逗号分隔的中继 URL。只有当某个中继像 relay.lightning.fm 那样限制写入时,才应在此添加——kind 31337 并非 Lightning FM 独有,不受限制的公共中继也会返回其他应用的所有曲目。 |
|
| 音频/图片哈希将针对 Blossom 服务器进行解析。 |
|
| 已获取的快照在下次工具调用重新查询中继之前会被复用多长时间。 |
开发
npm install
npm run dev # runs src/index.ts directly via tsx
npm run build # tsc -> dist/src/nostr/track.ts 与 station-server/src/catalog/track.ts 和 app-desktop/src-tauri/src/relay.rs 中的 kind 31337 解析保持一致。三者必须就标签名称达成一致——这是平台的公共线上格式,完整文档见 lightning.fm/interop。
许可证
MIT
Available Tools
3 toolsget_artistLook up a Lightning FM artistA
Look up an artist by display name or Nostr pubkey (hex or npub) and return their profile plus every track they have published to Lightning FM.
| Name | Required | Description | Default |
|---|---|---|---|
| artist | Yes | Artist display name (partial match ok), hex pubkey, or npub. |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description takes on the full burden. It discloses accepted input formats (display name, hex, npub) and return contents (profile + every published track). It does not describe error handling or what happens on ambiguous matches, and the read-only nature is implied rather than explicit, so a 5 is not warranted.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
A single, efficiently worded sentence that front-loads the action and target, then conveys return value without filler. Every phrase earns its place.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a single-parameter lookup with no output schema, the description adequately covers what will be returned (profile + tracks). It leaves a few edge cases unaddressed (e.g., ambiguous names, empty results), but the tool is simple enough that these are minor gaps.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100% and the schema already explains the parameter well (partial match ok, formats). The description essentially repeats that information without adding extra semantic context about the parameter, so it meets the baseline but does not exceed it.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states a specific verb ('Look up'), the resource ('artist'), and the accepted identifiers (display name or Nostr pubkey), and further specifies that it returns the profile plus all published tracks. However, it does not explicitly differentiate from sibling tools like search_catalog, so it stops short of a 5.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The intended use is clear: when you need an artist's profile and tracks by name or pubkey, this is the tool. It does not explicitly address when not to use it or mention alternatives, leaving sibling differentiation to inference.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
get_now_playingWhat's playing on Lightning FM right nowA
Read the current live activity (NIP-53, kind 30311) Lightning FM publishes on every track change: the track currently on air, the stream URL, and station status.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It clearly labels the operation as a read, exposes the live/NIP-53 protocol detail, and states what information is returned. It does not mention failure modes, latency, or auth, but for a zero-parameter public read that is a minor gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single tight sentence that front-loads the verb and resource, then adds protocol and return details. Every clause earns its place with no repetition or fluff.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a zero-parameter read with no output schema, the description needs to explain what the tool returns and does, and it does so concretely (track, stream URL, station status). It could slightly improve by noting what happens when no track is currently on air, but the station status detail partially covers that.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool takes zero parameters, so the schema holds no parameter information for the description to enhance. According to the baseline for zero-parameter tools, this is a Strong case: nothing is missing.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description names a specific verb ('Read'), a specific resource ('current live activity ... Lightning FM publishes'), and the exact data elements returned (track, stream URL, station status). It clearly distinguishes this from sibling search-oriented tools like search_catalog and get_artist by focusing on live, current state rather than catalog lookup.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description says it reads current live activity and the track currently on air, which gives clear context for when to use it. It does not explicitly name sibling alternatives or say when not to use it, but the 'current' vs. search distinction is strong enough that an agent should route correctly.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
search_catalogSearch Lightning FM catalogA
Search or browse Lightning FM's Nostr-native music catalog (kind 31337 track events, fetched live from wss://relay.lightning.fm). Every result is signed by the artist's own Nostr key — this is the canonical catalog, not a curated subset. Leave all filters empty to browse the whole catalog, newest first.
| Name | Required | Description | Default |
|---|---|---|---|
| tag | No | Match a single free-form keyword tag. | |
| genre | No | Exact or partial genre match, case-insensitive. | |
| limit | No | Max tracks to return (default 20, max 100). | |
| query | No | Free-text match against title, artist name, album, genre, and description. |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It discloses the live-fetching behavior, the Nostr signature guarantee, the canonical nature of the data, and the default ordering. It does not mention potential latency, relay availability, or result shape, but for a search tool the disclosed traits are substantive and useful.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is three sentences with no filler. It front-loads the core purpose, then efficiently adds key contextual facts (live source, signed results, canonical scope, browse behavior). Every sentence earns its place.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a search/browse tool with no output schema and no annotations, the description covers purpose, usage, data source, trust properties, and default ordering. It is missing explicit return-format details and error behavior, but the schema covers parameters and the description gives enough context for correct invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so all parameters are already documented in the schema. The description adds one meaningful behavioral hint—that leaving all filters empty browses the whole catalog—but does not add meaning for individual parameters beyond the schema. Baseline 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states a specific verb ('Search or browse') and resource ('Lightning FM's Nostr-native music catalog'), and further distinguishes it by specifying the event kind (31337) and the live relay source. This makes it clearly distinct from the sibling tools get_artist and get_now_playing, which focus on singular or current-state data.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
It gives clear usage context: filters can be left empty to browse the entire catalog newest first, and the catalog is live and canonical rather than curated. However, it does not explicitly state when to prefer this tool over the sibling tools or provide exclusion criteria, so it stops short of a 5.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
3 tool updates
v0.1.5- First observed
get_artist - First observed
get_now_playing - First observed
search_catalog
TDQS
Scored across 3 tools
Each tool has a distinct purpose: searching the catalog, looking up an artist, and reading live now-playing data. There is no practical overlap in what an agent would select them for.
All three tools follow a clear verb_noun convention: search_catalog, get_artist, get_now_playing. The naming pattern is predictable and consistent.
Three tools is a tight, well-scoped set for a read-only music catalog API. Each tool covers a distinct high-level user need without unnecessary bloat.
The core domain is covered: catalog browsing/search, artist lookup with tracks, and live playback status. A direct track-by-ID detail lookup is a minor gap, but the other tools can work around it through search or artist queries.
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