recheck_slotOptional standalone check. get_booking_handoff already revalidates before returning a URL; call this only to confirm availability without proceeding to handoff. It never books, holds inventory, takes payment, or returns checkout.
| Name | Required | Description | Default |
|---|---|---|---|
| date | No | ||
| slot_id | Yes | ||
| earliest_time | No | ||
| latest_end_time | No | ||
| duration_minutes | No | ||
| number_of_players | No |
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Changes observed during successful MCP inspections.
Output schema / oneOfPrevious value: -[
- {
- "additionalProperties": false,
- "properties": {
- "checked_at": {
- "format": "date-time",
- "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$",
- "type": "string"
- },
- "data": {
- "additionalProperties": false,
- "properties": {
- "availability": {
- "additionalProperties": false,
- "properties": {
- "confidence": {
- "enum": [
- "confirmed_live",
- "provider_reported",
- "derived",
- "unknown"
- ],
- "type": "string"
- },
- "status": {
- "enum": [
- "available",
- "unavailable",
- "unknown"
- ],
- "type": "string"
- }
- },
- "required": [
- "status",
- "confidence"
- ],
- "type": "object"
- },
- "checked_at": {
- "format": "date-time",
- "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$",
- "type": "string"
- },
- "club_id": {
- "anyOf": [
- {
- "pattern": "^[a-z0-9]+(?:-[a-z0-9]+)*$",
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "court": {
- "additionalProperties": false,
- "properties": {
- "id": {
- "minLength": 1,
- "type": "string"
- },
- "name": {
- "minLength": 1,
- "type": "string"
- }
- },
- "required": [
- "id",
- "name"
- ],
- "type": "object"
- },
- "currency": {
- "maxLength": 3,
- "minLength": 3,
- "type": "string"
- },
- "date": {
- "format": "date",
- "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$",
- "type": "string"
- },
- "duration": {
- "exclusiveMinimum": 0,
- "maximum": 9007199254740991,
- "type": "integer"
- },
- "price": {
- "anyOf": [
- {
- "minimum": 0,
- "type": "number"
- },
- {
- "type": "null"
- }
- ]
- },
- "price_details": {
- "additionalProperties": false,
- "properties": {
- "amount": {
- "anyOf": [
- {
- "minimum": 0,
- "type": "number"
- },
- {
- "type": "null"
- }
- ]
- },
- "basis": {
- "enum": [
- "whole_court",
- "per_player",
- "session",
- "unknown"
- ],
- "type": "string"
- },
- "calculated_per_player": {
- "anyOf": [
- {
- "minimum": 0,
- "type": "number"
- },
- {
- "type": "null"
- }
- ]
- },
- "currency": {
- "maxLength": 3,
- "minLength": 3,
- "type": "string"
- },
- "number_of_players": {
- "exclusiveMinimum": 0,
- "maximum": 9007199254740991,
- "type": "integer"
- }
- },
- "required": [
- "amount",
- "currency",
- "basis",
- "number_of_players",
- "calculated_per_player"
- ],
- "type": "object"
- },
- "provider": {
- "enum": [
- "padelstars",
- "playtomic",
- "padelmates",
- "matchi",
- "clubspark"
- ],
- "type": "string"
- },
- "revalidation": {
- "additionalProperties": false,
- "properties": {
- "expires_at": {
- "anyOf": [
- {
- "format": "date-time",
- "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$",
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "recheck_after": {
- "anyOf": [
- {
- "format": "date-time",
- "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$",
- "type": "string"
- },
- {
- "type": "null"
- }
- ]
- },
- "required": {
- "type": "boolean"
- },
- "semantics": {
- "enum": [
- "recheck_before_handoff",
- "rechecked_for_handoff"
- ],
- "type": "string"
- }
- },
- "required": [
- "required",
- "recheck_after",
- "expires_at",
- "semantics"
- ],
- "type": "object"
- },
- "slot_id": {
- "minLength": 1,
- "type": "string"
- },
- "source": {
- "additionalProperties": false,
- "properties": {
- "method": {
- "enum": [
- "provider_live_api",
- "provider_public_page",
- "catalog_snapshot"
- ],
- "type": "string"
- },
- "provider": {
- "minLength": 1,
- "type": "string"
- },
- "provider_url": {
- "format": "uri",
- "type": "string"
- }
- },
- "required": [
- "provider",
- "provider_url",
- "method"
- ],
- "type": "object"
- },
- "starts_at": {
- "format": "date-time",
- "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$",
- "type": "string"
- },
- "travel": {
- "additionalProperties": false,
- "properties": {
- "confidence": {
- "enum": [
- "estimated",
- "unavailable"
- ],
- "type": "string"
- },
- "coordinates": {
- "anyOf": [
- {
- "additionalProperties": false,
- "properties": {
- "latitude": {
- "maximum": 90,
- "minimum": -90,
- "type": "number"
- },
- "longitude": {
- "maximum": 180,
- "minimum": -180,
- "type": "number"
- }
- },
- "required": [
- "latitude",
- "longitude"
- ],
- "type": "object"
- },
- {
- "type": "null"
- }
- ]
- },
- "estimated_duration_minutes": {
- "anyOf": [
- {
- "exclusiveMinimum": 0,
- "maximum": 9007199254740991,
- "type": "integer"
- },
- {
- "type": "null"
- }
- ]
- },
- "method": {
- "enum": [
- "straight_line_heuristic",
- "not_calculated"
- ],
- "type": "string"
- },
- "mode": {
- "enum": [
- "drive"
- ],
- "type": "string"
- },
- "straight_line_distance_km": {
- "anyOf": [
- {
- "minimum": 0,
- "type": "number"
- },
- {
- "type": "null"
- }
- ]
- }
- },
- "required": [
- "coordinates",
- "straight_line_distance_km",
- "estimated_duration_minutes",
- "mode",
- "confidence",
- "method"
- ],
- "type": "object"
- },
- "travel_estimate_uncertain": {
- "type": "boolean"
- },
- "venue": {
- "additionalProperties": false,
- "properties": {
- "id": {
- "minLength": 1,
- "type": "string"
- },
- "location": {
- "minLength": 1,
- "type": "string"
- },
- "name": {
- "minLength": 1,
- "type": "string"
- }
- },
- "required": [
- "id",
- "name",
- "location"
- ],
- "type": "object"
- }
- },
- "required": [
- "slot_id",
- "provider",
- "venue",
- "court",
- "starts_at",
- "duration",
- "price",
- "currency",
- "club_id",
- "date",
- "source",
- "checked_at",
- "availability",
- "price_details",
- "travel",
- "travel_estimate_uncertain",
- "revalidation"
- ],
- "type": "object"
- },
- "status": {
- "const": "available",
- "type": "string"
- }
- },
- "required": [
- "status",
- "checked_at",
- "data"
- ],
- "type": "object"
- },
- {
- "additionalProperties": false,
- "properties": {
- "checked_at": {
- "format": "date-time",
- "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$",
- "type": "string"
- },
- "reason": {
- "minLength": 1,
- "type": "string"
- },
- "slot_id": {
- "minLength": 1,
- "type": "string"
- },
- "status": {
- "const": "unavailable",
- "type": "string"
- }
- },
- "required": [
- "status",
- "checked_at",
- "slot_id",
- "reason"
- ],
- "type": "object"
- }
-]New value: +[
+ {
+ "additionalProperties": false,
+ "properties": {
+ "checked_at": {
+ "format": "date-time",
+ "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$",
+ "type": "string"
+ },
+ "data": {
+ "additionalProperties": false,
+ "properties": {
+ "availability": {
+ "additionalProperties": false,
+ "properties": {
+ "confidence": {
+ "enum": [
+ "confirmed_live",
+ "provider_reported",
+ "derived",
+ "unknown"
+ ],
+ "type": "string"
+ },
+ "status": {
+ "enum": [
+ "available",
+ "unavailable",
+ "unknown"
+ ],
+ "type": "string"
+ }
+ },
+ "required": [
+ "status",
+ "confidence"
+ ],
+ "type": "object"
+ },
+ "checked_at": {
+ "format": "date-time",
+ "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$",
+ "type": "string"
+ },
+ "club_id": {
+ "anyOf": [
+ {
+ "pattern": "^[a-z0-9]+(?:-[a-z0-9]+)*$",
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "court": {
+ "additionalProperties": false,
+ "properties": {
+ "id": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "name": {
+ "minLength": 1,
+ "type": "string"
+ }
+ },
+ "required": [
+ "id",
+ "name"
+ ],
+ "type": "object"
+ },
+ "currency": {
+ "maxLength": 3,
+ "minLength": 3,
+ "type": "string"
+ },
+ "date": {
+ "format": "date",
+ "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$",
+ "type": "string"
+ },
+ "duration": {
+ "exclusiveMinimum": 0,
+ "maximum": 9007199254740991,
+ "type": "integer"
+ },
+ "price": {
+ "anyOf": [
+ {
+ "minimum": 0,
+ "type": "number"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "price_details": {
+ "additionalProperties": false,
+ "properties": {
+ "amount": {
+ "anyOf": [
+ {
+ "minimum": 0,
+ "type": "number"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "basis": {
+ "enum": [
+ "whole_court",
+ "per_player",
+ "session",
+ "unknown"
+ ],
+ "type": "string"
+ },
+ "calculated_per_player": {
+ "anyOf": [
+ {
+ "minimum": 0,
+ "type": "number"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "currency": {
+ "maxLength": 3,
+ "minLength": 3,
+ "type": "string"
+ },
+ "number_of_players": {
+ "exclusiveMinimum": 0,
+ "maximum": 9007199254740991,
+ "type": "integer"
+ }
+ },
+ "required": [
+ "amount",
+ "currency",
+ "basis",
+ "number_of_players",
+ "calculated_per_player"
+ ],
+ "type": "object"
+ },
+ "provider": {
+ "enum": [
+ "padelstars",
+ "playtomic",
+ "padelmates",
+ "matchi",
+ "clubspark",
+ "matchpoint"
+ ],
+ "type": "string"
+ },
+ "revalidation": {
+ "additionalProperties": false,
+ "properties": {
+ "expires_at": {
+ "anyOf": [
+ {
+ "format": "date-time",
+ "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$",
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "recheck_after": {
+ "anyOf": [
+ {
+ "format": "date-time",
+ "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$",
+ "type": "string"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "required": {
+ "type": "boolean"
+ },
+ "semantics": {
+ "enum": [
+ "recheck_before_handoff",
+ "rechecked_for_handoff"
+ ],
+ "type": "string"
+ }
+ },
+ "required": [
+ "required",
+ "recheck_after",
+ "expires_at",
+ "semantics"
+ ],
+ "type": "object"
+ },
+ "slot_id": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "source": {
+ "additionalProperties": false,
+ "properties": {
+ "method": {
+ "enum": [
+ "provider_live_api",
+ "provider_public_page",
+ "catalog_snapshot"
+ ],
+ "type": "string"
+ },
+ "provider": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "provider_url": {
+ "format": "uri",
+ "type": "string"
+ }
+ },
+ "required": [
+ "provider",
+ "provider_url",
+ "method"
+ ],
+ "type": "object"
+ },
+ "starts_at": {
+ "format": "date-time",
+ "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$",
+ "type": "string"
+ },
+ "travel": {
+ "additionalProperties": false,
+ "properties": {
+ "confidence": {
+ "enum": [
+ "estimated",
+ "unavailable"
+ ],
+ "type": "string"
+ },
+ "coordinates": {
+ "anyOf": [
+ {
+ "additionalProperties": false,
+ "properties": {
+ "latitude": {
+ "maximum": 90,
+ "minimum": -90,
+ "type": "number"
+ },
+ "longitude": {
+ "maximum": 180,
+ "minimum": -180,
+ "type": "number"
+ }
+ },
+ "required": [
+ "latitude",
+ "longitude"
+ ],
+ "type": "object"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "estimated_duration_minutes": {
+ "anyOf": [
+ {
+ "exclusiveMinimum": 0,
+ "maximum": 9007199254740991,
+ "type": "integer"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ },
+ "method": {
+ "enum": [
+ "straight_line_heuristic",
+ "not_calculated"
+ ],
+ "type": "string"
+ },
+ "mode": {
+ "enum": [
+ "drive"
+ ],
+ "type": "string"
+ },
+ "straight_line_distance_km": {
+ "anyOf": [
+ {
+ "minimum": 0,
+ "type": "number"
+ },
+ {
+ "type": "null"
+ }
+ ]
+ }
+ },
+ "required": [
+ "coordinates",
+ "straight_line_distance_km",
+ "estimated_duration_minutes",
+ "mode",
+ "confidence",
+ "method"
+ ],
+ "type": "object"
+ },
+ "travel_estimate_uncertain": {
+ "type": "boolean"
+ },
+ "venue": {
+ "additionalProperties": false,
+ "properties": {
+ "id": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "location": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "name": {
+ "minLength": 1,
+ "type": "string"
+ }
+ },
+ "required": [
+ "id",
+ "name",
+ "location"
+ ],
+ "type": "object"
+ }
+ },
+ "required": [
+ "slot_id",
+ "provider",
+ "venue",
+ "court",
+ "starts_at",
+ "duration",
+ "price",
+ "currency",
+ "club_id",
+ "date",
+ "source",
+ "checked_at",
+ "availability",
+ "price_details",
+ "travel",
+ "travel_estimate_uncertain",
+ "revalidation"
+ ],
+ "type": "object"
+ },
+ "status": {
+ "const": "available",
+ "type": "string"
+ }
+ },
+ "required": [
+ "status",
+ "checked_at",
+ "data"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "checked_at": {
+ "format": "date-time",
+ "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$",
+ "type": "string"
+ },
+ "reason": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "slot_id": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "status": {
+ "const": "unavailable",
+ "type": "string"
+ }
+ },
+ "required": [
+ "status",
+ "checked_at",
+ "slot_id",
+ "reason"
+ ],
+ "type": "object"
+ }
+]Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly, idempotent, non-destructive, but the description adds real value by enumerating what it never does — no booking, no inventory hold, no payment, no checkout response. It stops short of describing what a negative result looks like (e.g., slot no longer available) or any rate limits, which keeps it at 4 rather than 5.
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?
Two sentences, zero filler, with the usage condition and the 'never does X' boundary front-loaded. Nothing repeats the name or title redundantly.
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?
An output schema exists, so return-value explanation is not required, and the safety profile is covered by annotations. However, for a six-parameter tool with no schema descriptions, the definition leaves an agent guessing what the optional constraint parameters mean, which is a meaningful gap in an otherwise well-scoped definition.
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?
Six parameters with 0% schema description coverage, and the description mentions none of them — not even the required slot_id, nor how date/earliest_time/latest_end_time/duration_minutes/number_of_players refine the check. With coverage this low the description was expected to compensate and does not.
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 action (revalidate/confirm availability of a selected slot) and frames it as a check rather than a booking. It distinguishes itself from the sibling that does similar work by noting get_booking_handoff already revalidates, though the core verb ('standalone check') is slightly softer than an explicit 'checks current availability of slot_id'.
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 an explicit when-to-use condition ('confirm availability without proceeding to handoff') and names the alternative (get_booking_handoff), which already performs the same revalidation. An agent can decide between the two without opening either schema.
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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