Social Fetch

Search Hacker News

hackernews_search_list

Read-only

Search Hacker News by keyword. Returns a list (use page/pageSize when paginated).

Input Schema

TableJSON Schema

Name	Required	Description
`q`	No	Alias for `query`. Prefer `query`.
`url`	No	Restrict search to story URLs matching this URL substring. Can omit `query`.
`link`	No	Alias for `url`. Prefer `url`.
`page`	No	Zero-based page index (maximum 50 pages, up to 1,000 hits).
`path`	No	Alias for `url`. Prefer `url`.
`sort`	No	Ranking mode. Default: `popularity`.
`trim`	No	Ignored if this tool does not support it.
`type`	No	Restrict search results to a Hacker News content type. `ask_hn`: Ask HN posts (questions to the community). `show_hn`: Show HN posts (projects/work being shared). `launch_hn`: Launch HN posts (YC-affiliated company launches). Default: `all`.
`limit`	No	Hits per page. Must be one of 10, 20, 30, 50. Default: 20. Prefer this over `pageSize`.
`query`	No	Full-text search query. Required unless `frontPageOnly`, `author`, `domain`, or `url` is set.
`author`	No	Restrict results to items by this Hacker News username.
`domain`	No	Restrict search to story URLs matching this domain (e.g. example.com). Can omit `query`.
`offset`	No	Ignored if this tool does not support it.
`prefix`	No	When true, enable prefix matching for query tokens.
`context`	Yes	Describe the user's underlying goal in one sentence — not the tool you are calling.
`tweetId`	No	Alias for `url`. Prefer `url`.
`keywords`	No	Alias for `query`. Prefer `query`.
`pageSize`	No	Deprecated alias for `limit`. When both are set, `limit` wins.
`tweetUrl`	No	Alias for `url`. Prefer `url`.
`tweet_id`	No	Alias for `url`. Prefer `url`.
`dateRange`	No	Creation-time window. Default: `all`.
`llm_model`	Yes	The exact model identifier you (the assistant) are running as, taken from your system prompt or environment (e.g. "claude-opus-4-8", "gpt-5.2"). Used for analytics only. If you do not know your model identifier with certainty, pass "unknown" — never guess.
`minPoints`	No	Minimum points/score filter.
`permalink`	No	Alias for `url`. Prefer `url`.
`tweet_url`	No	Alias for `url`. Prefer `url`.
`maxResults`	No	Ignored if this tool does not support it.
`max_results`	No	Ignored if this tool does not support it.
`searchAuthor`	No	When true, include author username in the searchable fields.
`frontPageOnly`	No	When true, restrict results to current front-page items. Allows omitting `query`.
`typoTolerance`	No	Enable typo tolerance. Default: true.
`conversation_id`	No	Echo the conversation_id from the server's previous response. The server provides it on the first call — never invent one, and do not issue parallel tool calls until you have it.
`searchStoryText`	No	Include story/comment text in searchable fields. Default: true. Set false to search title/URL only.

Schema Changelog

Changes observed during successful MCP inspections.

Changed19 schema fields changedSep 21, 2026

addedInput schema / properties / keywords

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "number"
+    },
+    {
+      "type": "boolean"
+    }
+  ],
+  "description": "Alias for `query`. Prefer `query`."
+}

addedInput schema / properties / link / anyOf

Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "number"
+  },
+  {
+    "type": "boolean"
+  }
+]

removedInput schema / properties / link / type
```
Removed value: -"string"
```

addedInput schema / properties / maxResults

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "number"
+    },
+    {
+      "type": "boolean"
+    }
+  ],
+  "description": "Ignored if this tool does not support it."
+}

addedInput schema / properties / max_results

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "number"
+    },
+    {
+      "type": "boolean"
+    }
+  ],
+  "description": "Ignored if this tool does not support it."
+}

addedInput schema / properties / offset

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "number"
+    },
+    {
+      "type": "boolean"
+    }
+  ],
+  "description": "Ignored if this tool does not support it."
+}

addedInput schema / properties / path

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "number"
+    },
+    {
+      "type": "boolean"
+    }
+  ],
+  "description": "Alias for `url`. Prefer `url`."
+}

addedInput schema / properties / permalink / anyOf

Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "number"
+  },
+  {
+    "type": "boolean"
+  }
+]

removedInput schema / properties / permalink / type
```
Removed value: -"string"
```

addedInput schema / properties / q

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "number"
+    },
+    {
+      "type": "boolean"
+    }
+  ],
+  "description": "Alias for `query`. Prefer `query`."
+}

addedInput schema / properties / trim

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "number"
+    },
+    {
+      "type": "boolean"
+    }
+  ],
+  "description": "Ignored if this tool does not support it."
+}

addedInput schema / properties / tweetId / anyOf

Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "number"
+  },
+  {
+    "type": "boolean"
+  }
+]

removedInput schema / properties / tweetId / type
```
Removed value: -"string"
```

addedInput schema / properties / tweetUrl / anyOf

Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "number"
+  },
+  {
+    "type": "boolean"
+  }
+]

removedInput schema / properties / tweetUrl / type
```
Removed value: -"string"
```

addedInput schema / properties / tweet_id / anyOf

Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "number"
+  },
+  {
+    "type": "boolean"
+  }
+]

removedInput schema / properties / tweet_id / type
```
Removed value: -"string"
```

addedInput schema / properties / tweet_url / anyOf

Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "number"
+  },
+  {
+    "type": "boolean"
+  }
+]

removedInput schema / properties / tweet_url / type
```
Removed value: -"string"
```

Changed6 schema fields changedSep 12, 2026

addedInput schema / properties / link

Added value: +{
+  "description": "Alias for `url`. Prefer `url`.",
+  "type": "string"
+}

addedInput schema / properties / permalink

Added value: +{
+  "description": "Alias for `url`. Prefer `url`.",
+  "type": "string"
+}

addedInput schema / properties / tweetId

Added value: +{
+  "description": "Alias for `url`. Prefer `url`.",
+  "type": "string"
+}

addedInput schema / properties / tweetUrl

Added value: +{
+  "description": "Alias for `url`. Prefer `url`.",
+  "type": "string"
+}

addedInput schema / properties / tweet_id

Added value: +{
+  "description": "Alias for `url`. Prefer `url`.",
+  "type": "string"
+}

addedInput schema / properties / tweet_url

Added value: +{
+  "description": "Alias for `url`. Prefer `url`.",
+  "type": "string"
+}

Changed5 schema fields changedSep 5, 2026

removedInput schema / additionalProperties
```
Removed value: -false
```

addedInput schema / properties / context

Added value: +{
+  "description": "Describe the user's underlying goal in one sentence — not the tool you are calling.",
+  "type": "string"
+}

addedInput schema / properties / conversation_id

Added value: +{
+  "description": "Echo the conversation_id from the server's previous response. The server provides it on the first call — never invent one, and do not issue parallel tool calls until you have it.",
+  "type": "string"
+}

addedInput schema / properties / llm_model

Added value: +{
+  "description": "The exact model identifier you (the assistant) are running as, taken from your system prompt or environment (e.g. \"claude-opus-4-8\", \"gpt-5.2\"). Used for analytics only. If you do not know your model identifier with certainty, pass \"unknown\" — never guess.",
+  "type": "string"
+}

addedInput schema / required

Added value: +[
+  "context",
+  "llm_model"
+]

Changed1 schema field changedAug 27, 2026

changedInput schema / $schema

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

Changed2 schema fields changedAug 4, 2026

addedInput schema / properties / limit

Added value: +{
+  "anyOf": [
+    {
+      "const": 10,
+      "type": "number"
+    },
+    {
+      "const": 20,
+      "type": "number"
+    },
+    {
+      "const": 30,
+      "type": "number"
+    },
+    {
+      "const": 50,
+      "type": "number"
+    }
+  ],
+  "description": "Hits per page. Must be one of 10, 20, 30, 50. Default: 20. Prefer this over `pageSize`."
+}

changedInput schema / properties / pageSize / description

Previous value: -"Hits per page. Must be one of 10, 20, 30, 50. Default: 20."New value: +"Deprecated alias for `limit`. When both are set, `limit` wins."

Changed1 schema field changedJul 31, 2026

changedInput schema / properties / type / description

Previous value: -"Content type filter. Default: `all`."New value: +"Restrict search results to a Hacker News content type. `ask_hn`: Ask HN posts (questions to the community). `show_hn`: Show HN posts (projects/work being shared). `launch_hn`: Launch HN posts (YC-affiliated company launches). Default: `all`."

Changed1 schema field changedJul 29, 2026
- addedInput schema / additionalProperties
```
Added value: +false
```

Changed10 schema fields changedJul 29, 2026

changedInput schema / properties / frontPageOnly / anyOf

Previous value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "boolean"
-  }
-]New value: +[
+  {
+    "type": "boolean"
+  },
+  {
+    "enum": [
+      "0",
+      "1",
+      "true",
+      "false"
+    ],
+    "type": "string"
+  }
+]

addedInput schema / properties / pageSize / anyOf

Added value: +[
+  {
+    "const": 10,
+    "type": "number"
+  },
+  {
+    "const": 20,
+    "type": "number"
+  },
+  {
+    "const": 30,
+    "type": "number"
+  },
+  {
+    "const": 50,
+    "type": "number"
+  }
+]

changedInput schema / properties / pageSize / description

Previous value: -"Hits per page. Default: 20."New value: +"Hits per page. Must be one of 10, 20, 30, 50. Default: 20."

removedInput schema / properties / pageSize / maximum
```
Removed value: -9007199254740991
```
removedInput schema / properties / pageSize / minimum
```
Removed value: --9007199254740991
```
removedInput schema / properties / pageSize / type
```
Removed value: -"integer"
```

changedInput schema / properties / prefix / anyOf

Previous value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "boolean"
-  }
-]New value: +[
+  {
+    "type": "boolean"
+  },
+  {
+    "enum": [
+      "0",
+      "1",
+      "true",
+      "false"
+    ],
+    "type": "string"
+  }
+]

changedInput schema / properties / searchAuthor / anyOf

Previous value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "boolean"
-  }
-]New value: +[
+  {
+    "type": "boolean"
+  },
+  {
+    "enum": [
+      "0",
+      "1",
+      "true",
+      "false"
+    ],
+    "type": "string"
+  }
+]

changedInput schema / properties / searchStoryText / anyOf

Previous value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "boolean"
-  }
-]New value: +[
+  {
+    "type": "boolean"
+  },
+  {
+    "enum": [
+      "0",
+      "1",
+      "true",
+      "false"
+    ],
+    "type": "string"
+  }
+]

changedInput schema / properties / typoTolerance / anyOf

Previous value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "boolean"
-  }
-]New value: +[
+  {
+    "type": "boolean"
+  },
+  {
+    "enum": [
+      "0",
+      "1",
+      "true",
+      "false"
+    ],
+    "type": "string"
+  }
+]

AddedJul 26, 2026

TDQS

A3.6/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Beyond the annotations (readOnlyHint, openWorldHint), the description explicitly discloses that the tool returns a list and supports pagination via page/pageSize. This adds useful behavioral context about result shape and iteration that the annotations do not convey, and it does not contradict them.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, front-loaded sentence with no filler or repetition. It is appropriately sized for a simple search tool, though it could have earned a 5 by adding a brief usage note without bloat.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given a 32-parameter tool, the schema carries full parameter documentation, so the description does not need to repeat it. However, the description offers no guidance on choosing among filters (query, url, author, domain, type) or on default behavior. It covers the essential 'paginated list' fact but is slightly under-specified for a tool of this complexity.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 100% schema description coverage, the baseline is 3. The description only adds a pagination hint ('page/pageSize') that is already fully documented in the schema; it does not clarify the many aliases (q, link, path, etc.) or the preference for limit over pageSize. No meaningful parameter meaning is added beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states a specific verb ('Search'), a resource ('Hacker News'), and a scope ('by keyword'), and immediately notes the return type ('Returns a list'). This differentiates it from sibling tools like hackernews_feed_list or hackernews_story_get without requiring the agent to open the schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided about when to use this tool versus alternatives such as hackernews_feed_list for feeds or hackernews_story_get for single items. The description implies a keyword-search use case but does not state exclusions, alternatives, or context, leaving the agent to infer applicability.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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Search Hacker News

Input Schema

Schema Changelog

TDQS

Glama MCP Gateway

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