Search

search

Read-onlyIdempotent

Search Internet Archive for texts, audio, video, and software by keyword. Returns item titles, identifiers, descriptions, and media types.

Input Schema

Name	Required	Description	Default
`limit`	No	Number of results to return (1-100, default 20)
`query`	Yes	Search query (e.g., "subject:astronomy", "creator:NASA", "moon landing")

Output Schema

Name	Required	Description	Default
`total`	Yes	Total number of search results found
`results`	Yes	Array of search result items

Schema Changelog

Changes observed during successful MCP inspections.

Changed2 schema fields changedMay 24, 2026

addedInput schema / examples

Added value: +[
+  {
+    "query": "subject:astronomy"
+  },
+  {
+    "limit": 50,
+    "query": "creator:NASA moon landing"
+  }
+]

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "results": {
+      "description": "Array of search result items",
+      "items": {
+        "properties": {
+          "creator": {
+            "description": "List of item creators",
+            "items": {
+              "type": "string"
+            },
+            "type": "array"
+          },
+          "date": {
+            "description": "Publication or creation date",
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "description": {
+            "description": "Item description",
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "downloads": {
+            "description": "Number of downloads",
+            "type": [
+              "number",
+              "null"
+            ]
+          },
+          "id": {
+            "description": "Archive.org item identifier",
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "mediatype": {
+            "description": "Media type (e.g., texts, audio, video, software)",
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "subjects": {
+            "description": "List of subject tags",
+            "items": {
+              "type": "string"
+            },
+            "type": "array"
+          },
+          "title": {
+            "description": "Item title",
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "url": {
+            "description": "Direct link to item on archive.org",
+            "type": [
+              "string",
+              "null"
+            ]
+          }
+        },
+        "required": [
+          "id",
+          "title",
+          "creator",
+          "date",
+          "description",
+          "mediatype",
+          "subjects",
+          "downloads",
+          "url"
+        ],
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "total": {
+      "description": "Total number of search results found",
+      "type": "number"
+    }
+  },
+  "required": [
+    "total",
+    "results"
+  ],
+  "type": "object"
+}

Changed2 schema fields changedMay 12, 2026

removedInput schema / examples

Removed value: -[
-  {
-    "query": "climate change"
-  },
-  {
-    "limit": 20,
-    "query": "open source",
-    "type": "accounts"
-  }
-]

changedOutput schema / (root)

Previous value: -{
-  "properties": {
-    "accounts": {
-      "description": "Matching Mastodon accounts",
-      "items": {
-        "properties": {
-          "acct": {
-            "description": "Full account address",
-            "type": "string"
-          },
-          "avatar": {
-            "description": "Avatar image URL",
-            "type": "string"
-          },
-          "bot": {
-            "description": "Whether account is a bot",
-            "type": "boolean"
-          },
-          "created_at": {
-            "description": "Account creation timestamp",
-            "type": "string"
-          },
-          "display_name": {
-            "description": "Display name",
-            "type": "string"
-          },
-          "followers_count": {
-            "description": "Number of followers",
-            "type": "number"
-          },
-          "following_count": {
-            "description": "Number following",
-            "type": "number"
-          },
-          "id": {
-            "description": "Account ID",
-            "type": "string"
-          },
-          "note": {
-            "description": "Bio/note text",
-            "type": "string"
-          },
-          "statuses_count": {
-            "description": "Number of posts",
-            "type": "number"
-          },
-          "url": {
-            "description": "Profile URL",
-            "type": "string"
-          },
-          "username": {
-            "description": "Username handle",
-            "type": "string"
-          }
-        },
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "hashtags": {
-      "description": "Matching hashtags",
-      "items": {
-        "properties": {
-          "name": {
-            "description": "Hashtag name",
-            "type": "string"
-          },
-          "url": {
-            "description": "Hashtag URL",
-            "type": "string"
-          }
-        },
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "query": {
-      "description": "The search query string used",
-      "type": "string"
-    },
-    "statuses": {
-      "description": "Matching posts/statuses",
-      "items": {
-        "properties": {
-          "account": {
-            "description": "Author account info",
-            "properties": {
-              "acct": {
-                "description": "Full account address",
-                "type": "string"
-              },
-              "display_name": {
-                "description": "Display name",
-                "type": "string"
-              },
-              "id": {
-                "description": "Account ID",
-                "type": "string"
-              },
-              "username": {
-                "description": "Username",
-                "type": "string"
-              }
-            },
-            "type": "object"
-          },
-          "content": {
-            "description": "Post content/body",
-            "type": "string"
-          },
-          "created_at": {
-            "description": "Post creation timestamp",
-            "type": "string"
-          },
-          "favourites_count": {
-            "description": "Number of favorites",
-            "type": "number"
-          },
-          "id": {
-            "description": "Status ID",
-            "type": "string"
-          },
-          "language": {
-            "description": "Post language code",
-            "type": [
-              "string",
-              "null"
-            ]
-          },
-          "reblogs_count": {
-            "description": "Number of reblogs/shares",
-            "type": "number"
-          },
-          "replies_count": {
-            "description": "Number of replies",
-            "type": "number"
-          },
-          "sensitive": {
-            "description": "Content warning flag",
-            "type": "boolean"
-          },
-          "spoiler_text": {
-            "description": "Content warning text",
-            "type": [
-              "string",
-              "null"
-            ]
-          },
-          "tags": {
-            "description": "Hashtags in post",
-            "items": {
-              "type": "string"
-            },
-            "type": "array"
-          },
-          "url": {
-            "description": "Status URL",
-            "type": "string"
-          },
-          "visibility": {
-            "description": "Visibility level",
-            "type": "string"
-          }
-        },
-        "type": "object"
-      },
-      "type": "array"
-    },
-    "type": {
-      "description": "Type of results returned: accounts, statuses, or hashtags",
-      "type": "string"
-    }
-  },
-  "required": [
-    "query",
-    "type",
-    "accounts",
-    "statuses",
-    "hashtags"
-  ],
-  "type": "object"
-}New value: +null

Changed1 schema field changedMay 8, 2026

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "properties": {
+    "accounts": {
+      "description": "Matching Mastodon accounts",
+      "items": {
+        "properties": {
+          "acct": {
+            "description": "Full account address",
+            "type": "string"
+          },
+          "avatar": {
+            "description": "Avatar image URL",
+            "type": "string"
+          },
+          "bot": {
+            "description": "Whether account is a bot",
+            "type": "boolean"
+          },
+          "created_at": {
+            "description": "Account creation timestamp",
+            "type": "string"
+          },
+          "display_name": {
+            "description": "Display name",
+            "type": "string"
+          },
+          "followers_count": {
+            "description": "Number of followers",
+            "type": "number"
+          },
+          "following_count": {
+            "description": "Number following",
+            "type": "number"
+          },
+          "id": {
+            "description": "Account ID",
+            "type": "string"
+          },
+          "note": {
+            "description": "Bio/note text",
+            "type": "string"
+          },
+          "statuses_count": {
+            "description": "Number of posts",
+            "type": "number"
+          },
+          "url": {
+            "description": "Profile URL",
+            "type": "string"
+          },
+          "username": {
+            "description": "Username handle",
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "hashtags": {
+      "description": "Matching hashtags",
+      "items": {
+        "properties": {
+          "name": {
+            "description": "Hashtag name",
+            "type": "string"
+          },
+          "url": {
+            "description": "Hashtag URL",
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "query": {
+      "description": "The search query string used",
+      "type": "string"
+    },
+    "statuses": {
+      "description": "Matching posts/statuses",
+      "items": {
+        "properties": {
+          "account": {
+            "description": "Author account info",
+            "properties": {
+              "acct": {
+                "description": "Full account address",
+                "type": "string"
+              },
+              "display_name": {
+                "description": "Display name",
+                "type": "string"
+              },
+              "id": {
+                "description": "Account ID",
+                "type": "string"
+              },
+              "username": {
+                "description": "Username",
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          "content": {
+            "description": "Post content/body",
+            "type": "string"
+          },
+          "created_at": {
+            "description": "Post creation timestamp",
+            "type": "string"
+          },
+          "favourites_count": {
+            "description": "Number of favorites",
+            "type": "number"
+          },
+          "id": {
+            "description": "Status ID",
+            "type": "string"
+          },
+          "language": {
+            "description": "Post language code",
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "reblogs_count": {
+            "description": "Number of reblogs/shares",
+            "type": "number"
+          },
+          "replies_count": {
+            "description": "Number of replies",
+            "type": "number"
+          },
+          "sensitive": {
+            "description": "Content warning flag",
+            "type": "boolean"
+          },
+          "spoiler_text": {
+            "description": "Content warning text",
+            "type": [
+              "string",
+              "null"
+            ]
+          },
+          "tags": {
+            "description": "Hashtags in post",
+            "items": {
+              "type": "string"
+            },
+            "type": "array"
+          },
+          "url": {
+            "description": "Status URL",
+            "type": "string"
+          },
+          "visibility": {
+            "description": "Visibility level",
+            "type": "string"
+          }
+        },
+        "type": "object"
+      },
+      "type": "array"
+    },
+    "type": {
+      "description": "Type of results returned: accounts, statuses, or hashtags",
+      "type": "string"
+    }
+  },
+  "required": [
+    "query",
+    "type",
+    "accounts",
+    "statuses",
+    "hashtags"
+  ],
+  "type": "object"
+}

Changed1 schema field changedMay 6, 2026

addedInput schema / examples

Added value: +[
+  {
+    "query": "climate change"
+  },
+  {
+    "limit": 20,
+    "query": "open source",
+    "type": "accounts"
+  }
+]

First observedApr 14, 2026

TDQS

A3.9/5.0

Behavior2/5

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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint false. The description adds no behavioral traits beyond what annotations and schema provide—it only restates the search mechanism ('by keyword') and return fields, both of which are already in the input schema and output schema. No mention of rate limits, pagination, or result variability.

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

Conciseness5/5

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

The description is two sentences, front-loaded with the primary verb and resource, and every word contributes meaning. No redundancy or filler.

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

Completeness5/5

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

Given the tool's simplicity, rich annotations, complete parameter schema, and presence of an output schema, the description fully covers the tool's scope and return content. It is complete and self-sufficient for an agent to select and invoke the tool correctly.

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?

Schema coverage is 100% with clear descriptions for both 'query' and 'limit'. The description does not add any additional parameter meaning beyond the schema, so it meets the baseline of 3.

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 uses the specific verb 'search', names the resource 'Internet Archive', and enumerates the content types (texts, audio, video, software) and returned fields (titles, identifiers, descriptions, media types). This clearly distinguishes it from sibling tools like 'search_within' or general search tools.

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?

The description provides clear context for use: keyword searching across Internet Archive media types. It does not explicitly name alternatives or exclusions, but the scope is unambiguous. Sibling tools like 'search_within' exist but are not referenced, which keeps this at a 4 rather than a 5.

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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Input Schema

Output Schema

Schema Changelog

TDQS

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