gutenberg-mcp-server

Search Gutenberg Books

gutenberg_search_books

Read-onlyIdempotent

Search the Project Gutenberg catalog of 78,000+ books. Every query word matches a title or author substring; filter by topic, language, translator, author lifespan, IDs, MIME prefix or copyright status. More than four query words, and the translator filter, require the local mirror. Empty matches succeed with criteria and a notice. Default popularity uses downloads in the last 30 days at the source snapshot. Returns IDs, titles, authors, languages, subjects, counts, and is_readable — use gutenberg_get_book for full metadata.

Input Schema

Name	Required	Description	Default
`ids`	No	Narrow results to these Gutenberg IDs, intersected with other filters. An empty list selects nothing; omit for unrestricted IDs. Use gutenberg_get_book for full single-ID metadata.
`page`	No	Page number for paginated results (1-indexed). Each page returns up to 32 books. Use totalCount to determine total pages.
`sort`	No	Result ordering. "popular" (default) sorts by downloads in the last 30 days at the source snapshot, descending. "ascending" and "descending" sort by Gutenberg ID number.	popular
`query`	No	Every nonblank whitespace-separated word must match title or author name as a literal substring. The local mirror ignores case and accents; live fallback may require accents and rejects more than four words. Example: "dickens expectations" matches Great Expectations.
`topic`	No	Phrase to match against subjects and bookshelves, ignoring case and, on the local mirror, accents. Example: "detective" matches the "Detective Fiction" bookshelf and "Detective and mystery stories" subject. Separate from query — topic searches categorization metadata, not title/author.
`copyright`	No	Any selected source copyright status: "true" copyrighted, "false" public domain in the USA, "null" unknown. Empty means all statuses; this is not worldwide legal clearance.
`languages`	No	Filter to books in any of these catalog language codes, exactly as results report them ("en", not "eng"). Example: ["en"] for English, ["fr", "de"] for French or German, ["enm"] for Middle English.
`mime_type`	No	Literal prefix of a format MIME key, such as "text/plain" or "application/pdf". Type and subtype casing is normalized; parameter suffixes retain literal case. Blank means unset.
`translator`	No	Every nonblank whitespace-separated word must match a translator name as a literal substring, ignoring case and accents; words can land on different translators of one book. Requires the local mirror. Example: "maude" finds the Aylmer and Louise Maude translations. Result rows omit translators; gutenberg_get_book reports them.
`author_year_end`	No	Include only books with an author who has a known birth or death year on or before this year. With author_year_start, one author must meet both bounds. Example: author_year_start=1800 with author_year_end=1899 returns books with 19th-century authors.
`author_year_start`	No	Include only books with an author who has a known birth or death year on or after this year (positive = CE, negative = BCE). With author_year_end, one author must meet both bounds.

Output Schema

Name	Required	Description
`page`	No	Current page number.
`books`	No	Matching books, ordered by the sort parameter.
`error`	No	Present when the call failed. Absent on success.
`notice`	No	Actionable guidance for an empty selection, or a caveat that the live catalog checked author_year_start and author_year_end separately. The caveat can accompany results.
`hasMore`	No	True if there are additional pages of results.
`totalCount`	No	Total number of books matching the query across all pages.
`effectiveCriteria`	No	Normalized search criteria, including sort and page defaults.

Schema Changelog

Changes observed during successful MCP inspections.

Changed9 schema fields changedNov 1, 2026

changedInput schema / properties / mime_type / description

Previous value: -"Literal prefix of a format MIME key, such as \"text/plain\" or \"text/html\". Blank means unset."New value: +"Literal prefix of a format MIME key, such as \"text/plain\" or \"application/pdf\". Type and subtype casing is normalized; parameter suffixes retain literal case. Blank means unset."

changedInput schema / properties / query / description

Previous value: -"Every nonblank whitespace-separated word must match title or author name as a case-insensitive literal substring. More than four words require the local mirror; live fallback rejects longer queries. Example: \"dickens expectations\" matches Great Expectations."New value: +"Every nonblank whitespace-separated word must match title or author name as a literal substring. The local mirror ignores case and accents; live fallback may require accents and rejects more than four words. Example: \"dickens expectations\" matches Great Expectations."

changedInput schema / properties / topic / description

Previous value: -"Case-insensitive phrase to match against subjects and bookshelves. Example: \"detective\" returns books on the \"Detective and Mystery Stories\" bookshelf. Separate from query — topic searches categorization metadata, not title/author."New value: +"Phrase to match against subjects and bookshelves, ignoring case and, on the local mirror, accents. Example: \"detective\" matches the \"Detective Fiction\" bookshelf and \"Detective and mystery stories\" subject. Separate from query — topic searches categorization metadata, not title/author."

changedInput schema / properties / translator / description

Previous value: -"Every nonblank whitespace-separated word must match a translator name as a case-insensitive literal substring; words can land on different translators of one book, and accents must match. Requires the local mirror. Example: \"maude\" finds the Aylmer and Louise Maude translations. Result rows omit translators; gutenberg_get_book reports them."New value: +"Every nonblank whitespace-separated word must match a translator name as a literal substring, ignoring case and accents; words can land on different translators of one book. Requires the local mirror. Example: \"maude\" finds the Aylmer and Louise Maude translations. Result rows omit translators; gutenberg_get_book reports them."

changedOutput schema / properties / books / items / properties / is_readable / description

Previous value: -"True for non-Sound records with UTF-8 plain text or HTML supported by gutenberg_get_text."New value: +"Eligible Text record with UTF-8 plain text, or HTML without audio formats. Does not guarantee the mirror file exists."

changedOutput schema / properties / effectiveCriteria / properties / mime_type / description

Previous value: -"Literal prefix of a format MIME key, such as \"text/plain\" or \"text/html\". Blank means unset."New value: +"Literal prefix of a format MIME key, such as \"text/plain\" or \"application/pdf\". Type and subtype casing is normalized; parameter suffixes retain literal case. Blank means unset."

changedOutput schema / properties / effectiveCriteria / properties / query / description

Previous value: -"Every nonblank word must occur in the title or an author name, case-insensitively, as a literal substring. More than four words require the local mirror; live fallback rejects longer queries. Whitespace separates words."New value: +"Every nonblank word must occur in the title or an author name as a literal substring. The local mirror ignores case and accents; live matching is upstream-defined. More than four words require the local mirror. Whitespace separates words."

changedOutput schema / properties / effectiveCriteria / properties / topic / description

Previous value: -"Case-insensitive phrase in a subject or bookshelf; blank means unset."New value: +"Phrase in a subject or bookshelf, ignoring case and, on the local mirror, accents; blank means unset."

changedOutput schema / properties / effectiveCriteria / properties / translator / description

Previous value: -"Every nonblank word must occur in a translator name, case-insensitively, as a literal substring. Requires the local mirror. Whitespace separates words."New value: +"Every nonblank word must occur in a translator name as a literal substring, ignoring case and accents. Requires the local mirror. Whitespace separates words."

Changed14 schema fields changedOct 31, 2026

changedInput schema / properties / author_year_end / description

Previous value: -"Include only books with at least one author alive on or before this year. Example: author_year_start=1800 with author_year_end=1899 returns books with 19th-century authors."New value: +"Include only books with an author who has a known birth or death year on or before this year. With author_year_start, one author must meet both bounds. Example: author_year_start=1800 with author_year_end=1899 returns books with 19th-century authors."

changedInput schema / properties / author_year_start / description

Previous value: -"Include only books with at least one author alive on or after this year (positive = CE, negative = BCE). Combine with author_year_end for a range."New value: +"Include only books with an author who has a known birth or death year on or after this year (positive = CE, negative = BCE). With author_year_end, one author must meet both bounds."

changedInput schema / properties / languages / description

Previous value: -"Filter to books in any of these two-character ISO 639-1 language codes. Example: [\"en\"] for English, [\"fr\", \"de\"] for French or German."New value: +"Filter to books in any of these catalog language codes, exactly as results report them (\"en\", not \"eng\"). Example: [\"en\"] for English, [\"fr\", \"de\"] for French or German, [\"enm\"] for Middle English."

changedInput schema / properties / languages / items / maxLength
```
Previous value: -2New value: +3
```

addedInput schema / properties / translator

Added value: +{
+  "description": "Every nonblank whitespace-separated word must match a translator name as a case-insensitive literal substring; words can land on different translators of one book, and accents must match. Requires the local mirror. Example: \"maude\" finds the Aylmer and Louise Maude translations. Result rows omit translators; gutenberg_get_book reports them.",
+  "type": "string"
+}

changedOutput schema / properties / books / items / properties / languages / description

Previous value: -"Two-character language codes for this edition."New value: +"Catalog language codes for this edition."

changedOutput schema / properties / effectiveCriteria / properties / author_year_end / description

Previous value: -"At least one author has a birth or death year on or before this year (CE positive, BCE negative)."New value: +"An author has a known birth or death year on or before this year (CE positive, BCE negative). With author_year_start, one author must meet both bounds."

changedOutput schema / properties / effectiveCriteria / properties / author_year_start / description

Previous value: -"At least one author has a birth or death year on or after this year (CE positive, BCE negative)."New value: +"An author has a known birth or death year on or after this year (CE positive, BCE negative). With author_year_end, one author must meet both bounds."

changedOutput schema / properties / effectiveCriteria / properties / languages / description

Previous value: -"Any listed two-character ISO 639-1 language code; empty means all languages."New value: +"Any listed two- or three-letter catalog language code; empty means all languages."

changedOutput schema / properties / effectiveCriteria / properties / languages / items / maxLength
```
Previous value: -2New value: +3
```

addedOutput schema / properties / effectiveCriteria / properties / translator

Added value: +{
+  "description": "Every nonblank word must occur in a translator name, case-insensitively, as a literal substring. Requires the local mirror. Whitespace separates words.",
+  "type": "string"
+}

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `query_requires_mirror`: More than four query words were supplied while the local mirror could not answer. `page_out_of_range`: The requested page number is past the last page of results for this query. `catalog_unavailable`: The Project Gutenberg catalog did not answer within the time this server allows for one search. Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `translator_requires_mirror`: A translator filter was supplied while the local mirror could not answer. `query_requires_mirror`: More than four query words were supplied while the local mirror could not answer. `page_out_of_range`: The requested page number is past the last page of results for this query. `catalog_unavailable`: The Project Gutenberg catalog did not answer within the time this server allows for one search. Other values are possible when a failure originates below the handler."

changedOutput schema / properties / error / properties / data / properties / reason / examples

Previous value: -[
-  "query_requires_mirror",
-  "page_out_of_range",
-  "catalog_unavailable"
-]New value: +[
+  "translator_requires_mirror",
+  "query_requires_mirror",
+  "page_out_of_range",
+  "catalog_unavailable"
+]

changedOutput schema / properties / notice / description

Previous value: -"Actionable guidance for an empty selection."New value: +"Actionable guidance for an empty selection, or a caveat that the live catalog checked author_year_start and author_year_end separately. The caveat can accompany results."

Changed9 schema fields changedOct 17, 2026

addedInput schema / properties / copyright

Added value: +{
+  "description": "Any selected source copyright status: \"true\" copyrighted, \"false\" public domain in the USA, \"null\" unknown. Empty means all statuses; this is not worldwide legal clearance.",
+  "items": {
+    "enum": [
+      "true",
+      "false",
+      "null"
+    ],
+    "type": "string"
+  },
+  "type": "array"
+}

changedInput schema / properties / ids / description

Previous value: -"Narrow results to specific Gutenberg ID numbers. Other filters still apply. Useful for batch pre-fetching known IDs; use gutenberg_get_book for single-ID lookups."New value: +"Narrow results to these Gutenberg IDs, intersected with other filters. An empty list selects nothing; omit for unrestricted IDs. Use gutenberg_get_book for full single-ID metadata."

addedInput schema / properties / mime_type

Added value: +{
+  "description": "Literal prefix of a format MIME key, such as \"text/plain\" or \"text/html\". Blank means unset.",
+  "type": "string"
+}

changedInput schema / properties / query / description

Previous value: -"Words to match against book titles and author names (case-insensitive, space-separated). Example: \"dickens expectations\" matches Great Expectations by Charles Dickens."New value: +"Every nonblank whitespace-separated word must match title or author name as a case-insensitive literal substring. More than four words require the local mirror; live fallback rejects longer queries. Example: \"dickens expectations\" matches Great Expectations."

changedOutput schema / anyOf

Previous value: -[
-  {
-    "not": {
-      "required": [
-        "error"
-      ]
-    },
-    "required": [
-      "books",
-      "totalCount",
-      "page",
-      "hasMore"
-    ]
-  },
-  {
-    "required": [
-      "error"
-    ]
-  }
-]New value: +[
+  {
+    "not": {
+      "required": [
+        "error"
+      ]
+    },
+    "required": [
+      "books",
+      "totalCount",
+      "page",
+      "hasMore",
+      "effectiveCriteria"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

addedOutput schema / properties / effectiveCriteria

Added value: +{
+  "additionalProperties": false,
+  "description": "Normalized search criteria, including sort and page defaults.",
+  "properties": {
+    "author_year_end": {
+      "description": "At least one author has a birth or death year on or before this year (CE positive, BCE negative).",
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    },
+    "author_year_start": {
+      "description": "At least one author has a birth or death year on or after this year (CE positive, BCE negative).",
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    },
+    "copyright": {
+      "description": "Any selected source copyright status: \"true\" copyrighted, \"false\" public domain in the USA, \"null\" unknown. Empty means all statuses; this is not worldwide legal clearance.",
+      "items": {
+        "enum": [
+          "true",
+          "false",
+          "null"
+        ],
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "ids": {
+      "description": "Restrict to these Gutenberg IDs, intersected with other filters. An empty list selects nothing; omit for unrestricted IDs.",
+      "items": {
+        "exclusiveMinimum": 0,
+        "maximum": 9007199254740991,
+        "type": "integer"
+      },
+      "type": "array"
+    },
+    "languages": {
+      "description": "Any listed two-character ISO 639-1 language code; empty means all languages.",
+      "items": {
+        "maxLength": 2,
+        "minLength": 2,
+        "type": "string"
+      },
+      "type": "array"
+    },
+    "mime_type": {
+      "description": "Literal prefix of a format MIME key, such as \"text/plain\" or \"text/html\". Blank means unset.",
+      "type": "string"
+    },
+    "page": {
+      "default": 1,
+      "description": "One-indexed page of at most 32 matches. Pages beyond the result range are errors.",
+      "exclusiveMinimum": 0,
+      "maximum": 9007199254740991,
+      "type": "integer"
+    },
+    "query": {
+      "description": "Every nonblank word must occur in the title or an author name, case-insensitively, as a literal substring. More than four words require the local mirror; live fallback rejects longer queries. Whitespace separates words.",
+      "type": "string"
+    },
+    "sort": {
+      "default": "popular",
+      "description": "Popular orders by source-snapshot downloads in the last 30 days, with ID tie-breaks locally; ascending and descending order by Gutenberg ID.",
+      "enum": [
+        "popular",
+        "ascending",
+        "descending"
+      ],
+      "type": "string"
+    },
+    "topic": {
+      "description": "Case-insensitive phrase in a subject or bookshelf; blank means unset.",
+      "type": "string"
+    }
+  },
+  "required": [
+    "sort",
+    "page"
+  ],
+  "type": "object"
+}

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `no_results`: The query matched no books in the catalog. `page_out_of_range`: The requested page number is past the last page of results for this query. `catalog_unavailable`: The Project Gutenberg catalog did not answer within the time this server allows for one search. Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `query_requires_mirror`: More than four query words were supplied while the local mirror could not answer. `page_out_of_range`: The requested page number is past the last page of results for this query. `catalog_unavailable`: The Project Gutenberg catalog did not answer within the time this server allows for one search. Other values are possible when a failure originates below the handler."

changedOutput schema / properties / error / properties / data / properties / reason / examples

Previous value: -[
-  "no_results",
-  "page_out_of_range",
-  "catalog_unavailable"
-]New value: +[
+  "query_requires_mirror",
+  "page_out_of_range",
+  "catalog_unavailable"
+]

addedOutput schema / properties / notice

Added value: +{
+  "description": "Actionable guidance for an empty selection.",
+  "type": "string"
+}

Changed5 schema fields changedOct 17, 2026

changedInput schema / properties / sort / description

Previous value: -"Result ordering. \"popular\" (default) sorts by download count descending. \"ascending\" and \"descending\" sort by Gutenberg ID number."New value: +"Result ordering. \"popular\" (default) sorts by downloads in the last 30 days at the source snapshot, descending. \"ascending\" and \"descending\" sort by Gutenberg ID number."

changedOutput schema / properties / books / items / properties / download_count / description

Previous value: -"Total downloads from Project Gutenberg — a real popularity signal reflecting actual reader interest."New value: +"Downloads in the last 30 days at the source snapshot."

changedOutput schema / properties / books / items / properties / has_plain_text / description

Previous value: -"True if the book has media_type \"Text\" AND a UTF-8 text/plain format available — prerequisite for gutenberg_get_text."New value: +"True for Text records with UTF-8 plain text; HTML-only editions can still have is_readable=true."

addedOutput schema / properties / books / items / properties / is_readable

Added value: +{
+  "description": "True for non-Sound records with UTF-8 plain text or HTML supported by gutenberg_get_text.",
+  "type": "boolean"
+}

changedOutput schema / properties / books / items / required

Previous value: -[
-  "id",
-  "title",
-  "authors",
-  "languages",
-  "subjects",
-  "download_count",
-  "has_plain_text"
-]New value: +[
+  "id",
+  "title",
+  "authors",
+  "languages",
+  "subjects",
+  "download_count",
+  "has_plain_text",
+  "is_readable"
+]

Changed4 schema fields changedSep 20, 2026
- removedOutput schema / properties / books / items / properties / authors / items / properties / birth_year / anyOf
```
Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / books / items / properties / authors / items / properties / birth_year / type
```
Added value: +[
+  "number",
+  "null"
+]
```
- removedOutput schema / properties / books / items / properties / authors / items / properties / death_year / anyOf
```
Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / books / items / properties / authors / items / properties / death_year / type
```
Added value: +[
+  "number",
+  "null"
+]
```

Changed2 schema fields changedAug 23, 2026

changedOutput schema / properties / error / properties / data / properties / reason / description

Previous value: -"Machine-readable failure mode. Declared by this tool: `no_results`: The query matched no books in the catalog. `page_out_of_range`: The requested page number is past the last page of results for this query. Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `no_results`: The query matched no books in the catalog. `page_out_of_range`: The requested page number is past the last page of results for this query. `catalog_unavailable`: The Project Gutenberg catalog did not answer within the time this server allows for one search. Other values are possible when a failure originates below the handler."

changedOutput schema / properties / error / properties / data / properties / reason / examples

Previous value: -[
-  "no_results",
-  "page_out_of_range"
-]New value: +[
+  "no_results",
+  "page_out_of_range",
+  "catalog_unavailable"
+]

Changed6 schema fields changedAug 22, 2026

changedInput schema / $schema

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

addedInput schema / additionalProperties
```
Added value: +false
```

changedOutput schema / $schema

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

addedOutput schema / anyOf

Added value: +[
+  {
+    "not": {
+      "required": [
+        "error"
+      ]
+    },
+    "required": [
+      "books",
+      "totalCount",
+      "page",
+      "hasMore"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

addedOutput schema / properties / error

Added value: +{
+  "additionalProperties": {},
+  "description": "Present when the call failed. Absent on success.",
+  "properties": {
+    "code": {
+      "description": "JSON-RPC error code for this failure.",
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    },
+    "data": {
+      "additionalProperties": {},
+      "properties": {
+        "reason": {
+          "description": "Machine-readable failure mode. Declared by this tool: `no_results`: The query matched no books in the catalog. `page_out_of_range`: The requested page number is past the last page of results for this query. Other values are possible when a failure originates below the handler.",
+          "examples": [
+            "no_results",
+            "page_out_of_range"
+          ],
+          "type": "string"
+        },
+        "recovery": {
+          "additionalProperties": {},
+          "description": "Actionable next step for the caller.",
+          "properties": {
+            "hint": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "hint"
+          ],
+          "type": "object"
+        },
+        "retryable": {
+          "description": "Whether retrying may succeed.",
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
+    "message": {
+      "description": "Human-readable description of what went wrong.",
+      "type": "string"
+    }
+  },
+  "required": [
+    "code",
+    "message"
+  ],
+  "type": "object"
+}

removedOutput schema / required

Removed value: -[
-  "books",
-  "totalCount",
-  "page",
-  "hasMore"
-]

Changed1 schema field changedJul 11, 2026

changedOutput schema / properties / books / items / properties / has_plain_text / description

Previous value: -"True if the book has media_type \"Text\" AND a text/plain format available — prerequisite for gutenberg_get_text."New value: +"True if the book has media_type \"Text\" AND a UTF-8 text/plain format available — prerequisite for gutenberg_get_text."

First observedJun 16, 2026

TDQS

A4.5/5.0

Behavior5/5

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

Beyond the read-only/idempotent annotations, it discloses non-obvious behavior: empty matches still succeed with criteria and a notice, popularity reflects downloads in the last 30 days at the source snapshot, and the live fallback degrades (rejects >4 words, may require accents). That is exactly the operational context annotations cannot carry.

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?

Dense and front-loaded: capability, filters, mirror caveat, empty-result behavior, sort default, return fields, sibling pointer. Every sentence earns its place, though the filter enumeration in one clause is crammed and slightly scannability-poor.

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

Completeness4/5

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

For an 11-parameter, no-required-parameter search tool, the description covers filtering semantics, failure modes, and fallback behavior. It also lists return fields even though an output schema exists, which is mild redundancy rather than a gap.

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

Parameters4/5

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

Schema coverage is 100%, so the baseline is 3; the description still adds cross-parameter meaning the schema states only locally — the AND semantics of every query word, the mirror requirement for translator, and what the popularity default actually measures. It stops short of adding anything for ids, page, mime_type, or copyright 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?

Opens with a specific verb and resource plus scope: 'Search the Project Gutenberg catalog of 78,000+ books.' It also distinguishes itself from the sibling gutenberg_get_book by naming it for full metadata, so an agent can route without opening either schema.

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

Usage Guidelines4/5

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

Explicitly routes to gutenberg_get_book for full metadata and states the conditions that force the local mirror (more than four query words, translator filter). It does not contrast with gutenberg_browse_popular or gutenberg_get_text, so the sibling map is incomplete.

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

All gutenberg-mcp-server tools Inspect

Try in Browser

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Glama MCP Gateway

Add one secure layer between your agents and this server.

Search Gutenberg Books

Input Schema

Output Schema

Schema Changelog

TDQS

Glama MCP Gateway

Resources