agentwebmap

Lookup domain

lookup_domain

Read-onlyIdempotent

Look up a domain: source URLs, summary, authority, ownership verification, last check and owner-stated terms. Compact by default; detail=full adds profile, country, nested files, badge and ownership claim instructions.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`detail`	No	Compact consumer fields by default; full adds owner profile, claims and listing metadata.	compact
`domain`	Yes	A domain name such as example.com (no scheme, no path).

Output Schema

TableJSON Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

Changed4 schema fields changedOct 19, 2026

addedInput schema / properties / detail

Added value: +{
+  "default": "compact",
+  "description": "Compact consumer fields by default; full adds owner profile, claims and listing metadata.",
+  "enum": [
+    "compact",
+    "full"
+  ],
+  "type": "string"
+}

addedInput schema / properties / domain / maxLength
```
Added value: +253
```
addedInput schema / properties / domain / minLength
```
Added value: +1
```

changedOutput schema / (root)

Previous value: -nullNew value: +{
+  "anyOf": [
+    {
+      "additionalProperties": false,
+      "properties": {
+        "agent_terms": {
+          "anyOf": [
+            {
+              "additionalProperties": false,
+              "properties": {
+                "attribution": {
+                  "enum": [
+                    "required",
+                    "appreciated",
+                    "none"
+                  ],
+                  "type": "string"
+                },
+                "attribution_text": {
+                  "maxLength": 200,
+                  "type": "string"
+                },
+                "automated_access": {
+                  "enum": [
+                    "welcome",
+                    "limited",
+                    "ask",
+                    "not_allowed"
+                  ],
+                  "type": "string"
+                },
+                "notes": {
+                  "maxLength": 500,
+                  "type": "string"
+                },
+                "pricing": {
+                  "enum": [
+                    "free",
+                    "freemium",
+                    "paid"
+                  ],
+                  "type": "string"
+                },
+                "pricing_url": {
+                  "type": "string"
+                },
+                "rate_limit": {
+                  "maxLength": 100,
+                  "type": "string"
+                },
+                "terms_url": {
+                  "type": "string"
+                }
+              },
+              "required": [],
+              "type": "object"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "authority": {
+          "type": [
+            "integer",
+            "null"
+          ]
+        },
+        "badge": {
+          "type": "string"
+        },
+        "capabilities": {
+          "description": "Publisher-declared capabilities. An MCP declaration does not prove availability or protocol compatibility.",
+          "items": {
+            "enum": [
+              "mcp"
+            ],
+            "type": "string"
+          },
+          "type": "array",
+          "uniqueItems": true
+        },
+        "capability_evidence": {
+          "items": {
+            "additionalProperties": false,
+            "properties": {
+              "id": {
+                "const": "mcp"
+              },
+              "source_url": {
+                "type": "string"
+              },
+              "status": {
+                "const": "publisher_declared"
+              },
+              "url": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "id",
+              "url",
+              "source_url",
+              "status"
+            ],
+            "type": "object"
+          },
+          "type": "array"
+        },
+        "categories": {
+          "description": "Inferred topic IDs from publisher metadata; empty means unclassified.",
+          "items": {
+            "enum": [
+              "ai-ml",
+              "developer-tools",
+              "infrastructure",
+              "data-analytics",
+              "cybersecurity",
+              "finance-payments",
+              "ecommerce",
+              "productivity",
+              "marketing",
+              "education",
+              "healthcare",
+              "media",
+              "design",
+              "gaming",
+              "travel",
+              "community",
+              "legal",
+              "recruiting-careers",
+              "industrial-manufacturing",
+              "real-estate",
+              "arts-culture",
+              "sports-fitness",
+              "food-dining",
+              "automotive",
+              "government-public-services",
+              "science-research"
+            ],
+            "type": "string"
+          },
+          "maxItems": 5,
+          "type": "array",
+          "uniqueItems": true
+        },
+        "categorized_at": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "category_evidence": {
+          "items": {
+            "additionalProperties": false,
+            "properties": {
+              "confidence": {
+                "description": "Deterministic rule strength, not a calibrated probability.",
+                "maximum": 1,
+                "minimum": 0,
+                "type": "number"
+              },
+              "evidence": {
+                "items": {
+                  "type": "string"
+                },
+                "type": "array"
+              },
+              "id": {
+                "enum": [
+                  "ai-ml",
+                  "developer-tools",
+                  "infrastructure",
+                  "data-analytics",
+                  "cybersecurity",
+                  "finance-payments",
+                  "ecommerce",
+                  "productivity",
+                  "marketing",
+                  "education",
+                  "healthcare",
+                  "media",
+                  "design",
+                  "gaming",
+                  "travel",
+                  "community",
+                  "legal",
+                  "recruiting-careers",
+                  "industrial-manufacturing",
+                  "real-estate",
+                  "arts-culture",
+                  "sports-fitness",
+                  "food-dining",
+                  "automotive",
+                  "government-public-services",
+                  "science-research"
+                ],
+                "type": "string"
+              },
+              "source": {
+                "const": "publisher_metadata"
+              }
+            },
+            "required": [
+              "id",
+              "confidence",
+              "evidence",
+              "source"
+            ],
+            "type": "object"
+          },
+          "type": "array"
+        },
+        "category_version": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "claim": {
+          "additionalProperties": false,
+          "properties": {
+            "benefits": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "docs": {
+              "type": "string"
+            },
+            "hint": {
+              "type": "string"
+            },
+            "mcp": {
+              "type": "string"
+            },
+            "verification": {
+              "type": "string"
+            },
+            "verify": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "hint",
+            "verification",
+            "verify",
+            "docs",
+            "mcp",
+            "benefits"
+          ],
+          "type": "object"
+        },
+        "contact": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "country": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "description": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "domain": {
+          "type": "string"
+        },
+        "evidence": {
+          "items": {
+            "additionalProperties": true,
+            "properties": {
+              "excerpt": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "source_url": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "title": {
+                "type": [
+                  "string",
+                  "null"
+                ]
+              },
+              "url": {
+                "type": "string"
+              }
+            },
+            "required": [
+              "url"
+            ],
+            "type": "object"
+          },
+          "type": "array"
+        },
+        "first_seen": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "last_checked": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "links": {
+          "type": [
+            "integer",
+            "null"
+          ]
+        },
+        "llms_full_txt": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "llms_txt": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "match_score": {
+          "type": "number"
+        },
+        "nested_llms_txt": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        },
+        "rank": {
+          "type": [
+            "integer",
+            "null"
+          ]
+        },
+        "registered_at": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "sections": {
+          "type": [
+            "integer",
+            "null"
+          ]
+        },
+        "status": {
+          "enum": [
+            "pending",
+            "valid",
+            "invalid",
+            "unreachable"
+          ],
+          "type": "string"
+        },
+        "summary": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "tags": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        },
+        "tier": {
+          "enum": [
+            "featured",
+            "listed",
+            "unlisted",
+            "rejected",
+            null
+          ],
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "title": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "verified": {
+          "type": "boolean"
+        },
+        "verified_at": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "why": {
+          "items": {
+            "type": "string"
+          },
+          "type": "array"
+        }
+      },
+      "required": [
+        "domain",
+        "status",
+        "tier",
+        "authority",
+        "verified",
+        "title",
+        "summary",
+        "llms_txt",
+        "llms_full_txt",
+        "last_checked",
+        "agent_terms",
+        "categories",
+        "capabilities"
+      ],
+      "type": "object"
+    },
+    {
+      "additionalProperties": true,
+      "properties": {
+        "detail": {
+          "type": "string"
+        },
+        "domain": {
+          "type": "string"
+        },
+        "error": {
+          "type": "string"
+        },
+        "hint": {
+          "type": "string"
+        },
+        "retry_after_seconds": {
+          "type": "integer"
+        }
+      },
+      "required": [
+        "error"
+      ],
+      "type": "object"
+    }
+  ],
+  "type": "object"
+}

First observedOct 18, 2026

TDQS

A3.7/5.0

Behavior4/5

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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds real context beyond that: the two fidelity levels and the fact that ownership verification state and 'last check' freshness are returned, which tells the agent this may be stale cached data.

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?

Two sentences, front-loaded with the action and the default behavior, then the modifier. The returned-field list is dense but each item is a selecting signal for an agent, so little is wasted, though it reads as an enumeration rather than prose.

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?

An output schema exists, so return values need not be explained, yet the loader-style description of returned fields helps tool selection. With annotations covering safety and the schema covering both params, the definition is sufficient to invoke correctly; only explicit alternative-tool routing is missing.

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 description coverage is 100% and both parameters are documented in-schema, so the baseline is 3. The description's 'detail=full adds profile, country, nested files, badge and ownership claim instructions' largely restates the schema's own enum description with slightly more itemization, adding only marginal value.

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

Purpose4/5

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

States a specific verb+resource ('Look up a domain') and enumerates exactly what comes back (source URLs, summary, authority, ownership verification, last check, owner-stated terms), which separates it from write-oriented siblings like register_domain and verify_domain. It does not name a sibling explicitly, so sibling differentiation is inferred from the name rather than stated.

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

Usage Guidelines3/5

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

Usage is implied by the field enumeration - you call it when you need registry facts about one specific domain - but there is no explicit when-to-use/when-not-to-use guidance and no pointer to resolve, list_domains, or search_llms_registry for the adjacent use cases.

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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