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Huly MCP

by dearlordylord

Overview Schema Source Related Servers Discussions Admin

Get Tool Schema

get_tool_schema

Read-onlyIdempotent

Retrieve the exact input and output schema for a Huly tool to verify required argument names and result shape before invoking it.

Instructions

Returns the exact input and output schema for one proxy-visible Huly tool. Use this before invoke_tool when you are not certain about required argument names or result shape.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`toolName`	Yes	Exact Huly tool name from search_tools or list_tool_categories results.

Output Schema

TableJSON Schema

Name	Required	Description	Default
`result`	Yes
`warnings`	No	Optional agent-visible warnings about degraded result fidelity or important operational conditions. Omitted when there is nothing the agent needs to surface.

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedv0.44.12Oct 7, 2026

changedOutput schema / properties / warnings / items / properties / code / enum

Previous value: -[
-  "status_metadata_unresolved",
-  "space_role_assignments_degraded",
-  "message_template_metadata_degraded",
-  "viewlet_descriptor_metadata_degraded",
-  "space_preference_metadata_degraded",
-  "approval_request_person_metadata_degraded",
-  "approval_request_count_metadata_degraded",
-  "hosted_huly_shutdown",
-  "issue_label_metadata_degraded",
-  "issue_milestone_metadata_degraded",
-  "notification_metadata_degraded",
-  "card_version_metadata_degraded",
-  "issue_creator_metadata_degraded",
-  "recruiting_review_metadata_degraded",
-  "issue_relation_metadata_degraded",
-  "class_collaborator_metadata_degraded",
-  "planner_document_metadata_degraded",
-  "external_channel_runtime_unsupported",
-  "support_runtime_unsupported",
-  "support_status_metadata_degraded",
-  "workbench_navigation_metadata_degraded",
-  "lead_customer_metadata_degraded",
-  "calendar_meeting_room_metadata_degraded",
-  "recruiting_candidate_custom_field_metadata_degraded",
-  "custom_field_metadata_degraded",
-  "external_publication_target_metadata_degraded"
-]New value: +[
+  "status_metadata_unresolved",
+  "space_role_assignments_degraded",
+  "message_template_metadata_degraded",
+  "viewlet_descriptor_metadata_degraded",
+  "space_preference_metadata_degraded",
+  "approval_request_person_metadata_degraded",
+  "approval_request_count_metadata_degraded",
+  "hosted_huly_shutdown",
+  "issue_label_metadata_degraded",
+  "issue_milestone_metadata_degraded",
+  "notification_metadata_degraded",
+  "card_version_metadata_degraded",
+  "issue_creator_metadata_degraded",
+  "recruiting_review_metadata_degraded",
+  "issue_relation_metadata_degraded",
+  "class_collaborator_metadata_degraded",
+  "planner_document_metadata_degraded",
+  "issue_descendant_ancestry_stale",
+  "issue_component_metadata_degraded",
+  "external_channel_runtime_unsupported",
+  "support_runtime_unsupported",
+  "support_status_metadata_degraded",
+  "workbench_navigation_metadata_degraded",
+  "lead_customer_metadata_degraded",
+  "calendar_meeting_room_metadata_degraded",
+  "recruiting_candidate_custom_field_metadata_degraded",
+  "custom_field_metadata_degraded",
+  "external_publication_target_metadata_degraded"
+]

Changed1 schema field changedv0.44.11Sep 22, 2026

changedOutput schema / properties / warnings / items / properties / code / enum

Previous value: -[
-  "status_metadata_unresolved",
-  "space_role_assignments_degraded",
-  "message_template_metadata_degraded",
-  "viewlet_descriptor_metadata_degraded",
-  "space_preference_metadata_degraded",
-  "approval_request_person_metadata_degraded",
-  "approval_request_count_metadata_degraded",
-  "hosted_huly_shutdown",
-  "issue_label_metadata_degraded",
-  "issue_milestone_metadata_degraded",
-  "notification_metadata_degraded",
-  "card_version_metadata_degraded",
-  "issue_creator_metadata_degraded",
-  "recruiting_review_metadata_degraded",
-  "issue_relation_metadata_degraded",
-  "class_collaborator_metadata_degraded",
-  "planner_document_metadata_degraded",
-  "external_channel_runtime_unsupported",
-  "support_runtime_unsupported",
-  "support_status_metadata_degraded",
-  "workbench_navigation_metadata_degraded",
-  "lead_customer_metadata_degraded",
-  "calendar_meeting_room_metadata_degraded",
-  "recruiting_candidate_custom_field_metadata_degraded",
-  "custom_field_metadata_degraded"
-]New value: +[
+  "status_metadata_unresolved",
+  "space_role_assignments_degraded",
+  "message_template_metadata_degraded",
+  "viewlet_descriptor_metadata_degraded",
+  "space_preference_metadata_degraded",
+  "approval_request_person_metadata_degraded",
+  "approval_request_count_metadata_degraded",
+  "hosted_huly_shutdown",
+  "issue_label_metadata_degraded",
+  "issue_milestone_metadata_degraded",
+  "notification_metadata_degraded",
+  "card_version_metadata_degraded",
+  "issue_creator_metadata_degraded",
+  "recruiting_review_metadata_degraded",
+  "issue_relation_metadata_degraded",
+  "class_collaborator_metadata_degraded",
+  "planner_document_metadata_degraded",
+  "external_channel_runtime_unsupported",
+  "support_runtime_unsupported",
+  "support_status_metadata_degraded",
+  "workbench_navigation_metadata_degraded",
+  "lead_customer_metadata_degraded",
+  "calendar_meeting_room_metadata_degraded",
+  "recruiting_candidate_custom_field_metadata_degraded",
+  "custom_field_metadata_degraded",
+  "external_publication_target_metadata_degraded"
+]

Changed1 schema field changedv0.44.9Sep 6, 2026

changedOutput schema / properties / warnings / items / properties / code / enum

Previous value: -[
-  "status_metadata_unresolved",
-  "space_role_assignments_degraded",
-  "message_template_metadata_degraded",
-  "viewlet_descriptor_metadata_degraded",
-  "space_preference_metadata_degraded",
-  "approval_request_person_metadata_degraded",
-  "approval_request_count_metadata_degraded",
-  "hosted_huly_shutdown",
-  "issue_label_metadata_degraded",
-  "issue_milestone_metadata_degraded",
-  "notification_metadata_degraded",
-  "card_version_metadata_degraded",
-  "issue_creator_metadata_degraded",
-  "recruiting_review_metadata_degraded",
-  "issue_relation_metadata_degraded",
-  "class_collaborator_metadata_degraded",
-  "external_channel_runtime_unsupported",
-  "support_runtime_unsupported",
-  "support_status_metadata_degraded",
-  "workbench_navigation_metadata_degraded"
-]New value: +[
+  "status_metadata_unresolved",
+  "space_role_assignments_degraded",
+  "message_template_metadata_degraded",
+  "viewlet_descriptor_metadata_degraded",
+  "space_preference_metadata_degraded",
+  "approval_request_person_metadata_degraded",
+  "approval_request_count_metadata_degraded",
+  "hosted_huly_shutdown",
+  "issue_label_metadata_degraded",
+  "issue_milestone_metadata_degraded",
+  "notification_metadata_degraded",
+  "card_version_metadata_degraded",
+  "issue_creator_metadata_degraded",
+  "recruiting_review_metadata_degraded",
+  "issue_relation_metadata_degraded",
+  "class_collaborator_metadata_degraded",
+  "planner_document_metadata_degraded",
+  "external_channel_runtime_unsupported",
+  "support_runtime_unsupported",
+  "support_status_metadata_degraded",
+  "workbench_navigation_metadata_degraded",
+  "lead_customer_metadata_degraded",
+  "calendar_meeting_room_metadata_degraded",
+  "recruiting_candidate_custom_field_metadata_degraded",
+  "custom_field_metadata_degraded"
+]

Changed18 schema fields changedv0.44.6Aug 13, 2026
- addedInput schema / $schema
```
Added value: +"http://json-schema.org/draft-07/schema#"
```
- removedOutput schema / $defs / NonEmptyTrimmedString
```
Removed value: -{
-  "description": "a non empty string",
-  "minLength": 1,
-  "pattern": "^\\S[\\s\\S]*\\S$|^\\S$|^$",
-  "title": "nonEmptyString",
-  "type": "string"
-}
```
- removedOutput schema / properties / result / properties / annotations / properties / title / $ref
```
Removed value: -"#/$defs/NonEmptyTrimmedString"
```
- addedOutput schema / properties / result / properties / annotations / properties / title / minLength
```
Added value: +1
```
- addedOutput schema / properties / result / properties / annotations / properties / title / pattern
```
Added value: +"^\\S[\\s\\S]*\\S$|^\\S$|^$"
```
- addedOutput schema / properties / result / properties / annotations / properties / title / type
```
Added value: +"string"
```
- removedOutput schema / properties / result / properties / annotations / required
```
Removed value: -[]
```
- removedOutput schema / properties / result / properties / category / $ref
```
Removed value: -"#/$defs/ToolCategory"
```
- addedOutput schema / properties / result / properties / category / allOf
```
Added value: +[
+  {
+    "$ref": "#/$defs/ToolCategory"
+  }
+]
```
- addedOutput schema / properties / result / properties / category / description
```
Added value: +"MCP tool category used for toolset filtering and proxy discovery."
```
- removedOutput schema / properties / result / properties / description / $ref
```
Removed value: -"#/$defs/ToolDescription"
```
- addedOutput schema / properties / result / properties / description / allOf
```
Added value: +[
+  {
+    "$ref": "#/$defs/ToolDescription"
+  }
+]
```
- addedOutput schema / properties / result / properties / description / description
```
Added value: +"Human-readable MCP tool description."
```
- removedOutput schema / properties / result / properties / inputSchema / title
```
Removed value: -"unknown"
```
- removedOutput schema / properties / result / properties / name / $ref
```
Removed value: -"#/$defs/ToolName"
```
- addedOutput schema / properties / result / properties / name / allOf
```
Added value: +[
+  {
+    "$ref": "#/$defs/ToolName"
+  }
+]
```
- addedOutput schema / properties / result / properties / name / description
```
Added value: +"Exact MCP tool name registered by this server."
```
- removedOutput schema / properties / result / properties / outputSchema / title
```
Removed value: -"unknown"
```

Changed1 schema field changedv0.44.5Aug 11, 2026

changedOutput schema / properties / warnings / items / properties / code / enum

Previous value: -[
-  "status_metadata_unresolved",
-  "space_role_assignments_degraded",
-  "message_template_metadata_degraded",
-  "viewlet_descriptor_metadata_degraded",
-  "space_preference_metadata_degraded",
-  "approval_request_person_metadata_degraded",
-  "approval_request_count_metadata_degraded",
-  "hosted_huly_shutdown",
-  "issue_label_metadata_degraded",
-  "issue_milestone_metadata_degraded",
-  "notification_metadata_degraded",
-  "card_version_metadata_degraded",
-  "issue_creator_metadata_degraded",
-  "recruiting_review_metadata_degraded",
-  "issue_relation_metadata_degraded",
-  "class_collaborator_metadata_degraded",
-  "external_channel_runtime_unsupported"
-]New value: +[
+  "status_metadata_unresolved",
+  "space_role_assignments_degraded",
+  "message_template_metadata_degraded",
+  "viewlet_descriptor_metadata_degraded",
+  "space_preference_metadata_degraded",
+  "approval_request_person_metadata_degraded",
+  "approval_request_count_metadata_degraded",
+  "hosted_huly_shutdown",
+  "issue_label_metadata_degraded",
+  "issue_milestone_metadata_degraded",
+  "notification_metadata_degraded",
+  "card_version_metadata_degraded",
+  "issue_creator_metadata_degraded",
+  "recruiting_review_metadata_degraded",
+  "issue_relation_metadata_degraded",
+  "class_collaborator_metadata_degraded",
+  "external_channel_runtime_unsupported",
+  "support_runtime_unsupported",
+  "support_status_metadata_degraded",
+  "workbench_navigation_metadata_degraded"
+]

Changed1 schema field changedv0.44.4Aug 2, 2026

changedOutput schema / properties / warnings / items / properties / code / enum

Previous value: -[
-  "status_metadata_unresolved",
-  "space_role_assignments_degraded",
-  "message_template_metadata_degraded",
-  "viewlet_descriptor_metadata_degraded",
-  "space_preference_metadata_degraded",
-  "approval_request_person_metadata_degraded",
-  "approval_request_count_metadata_degraded",
-  "hosted_huly_shutdown",
-  "issue_label_metadata_degraded",
-  "issue_milestone_metadata_degraded",
-  "notification_metadata_degraded",
-  "card_version_metadata_degraded",
-  "issue_creator_metadata_degraded"
-]New value: +[
+  "status_metadata_unresolved",
+  "space_role_assignments_degraded",
+  "message_template_metadata_degraded",
+  "viewlet_descriptor_metadata_degraded",
+  "space_preference_metadata_degraded",
+  "approval_request_person_metadata_degraded",
+  "approval_request_count_metadata_degraded",
+  "hosted_huly_shutdown",
+  "issue_label_metadata_degraded",
+  "issue_milestone_metadata_degraded",
+  "notification_metadata_degraded",
+  "card_version_metadata_degraded",
+  "issue_creator_metadata_degraded",
+  "recruiting_review_metadata_degraded",
+  "issue_relation_metadata_degraded",
+  "class_collaborator_metadata_degraded",
+  "external_channel_runtime_unsupported"
+]

Changed1 schema field changedv0.44.3Jul 30, 2026

changedOutput schema / properties / warnings / items / properties / code / enum

Previous value: -[
-  "status_metadata_unresolved",
-  "space_role_assignments_degraded",
-  "message_template_metadata_degraded",
-  "viewlet_descriptor_metadata_degraded",
-  "space_preference_metadata_degraded",
-  "approval_request_person_metadata_degraded",
-  "approval_request_count_metadata_degraded",
-  "hosted_huly_shutdown"
-]New value: +[
+  "status_metadata_unresolved",
+  "space_role_assignments_degraded",
+  "message_template_metadata_degraded",
+  "viewlet_descriptor_metadata_degraded",
+  "space_preference_metadata_degraded",
+  "approval_request_person_metadata_degraded",
+  "approval_request_count_metadata_degraded",
+  "hosted_huly_shutdown",
+  "issue_label_metadata_degraded",
+  "issue_milestone_metadata_degraded",
+  "notification_metadata_degraded",
+  "card_version_metadata_degraded",
+  "issue_creator_metadata_degraded"
+]

Changed2 schema fields changedv0.44.2Jul 15, 2026

changedOutput schema / properties / warnings / description

Previous value: -"Optional agent-visible warnings about degraded result fidelity. Omitted when the server returned the documented happy-path payload."New value: +"Optional agent-visible warnings about degraded result fidelity or important operational conditions. Omitted when there is nothing the agent needs to surface."

changedOutput schema / properties / warnings / items / properties / code / enum

Previous value: -[
-  "status_metadata_unresolved",
-  "space_role_assignments_degraded",
-  "message_template_metadata_degraded",
-  "viewlet_descriptor_metadata_degraded",
-  "space_preference_metadata_degraded",
-  "approval_request_person_metadata_degraded",
-  "approval_request_count_metadata_degraded"
-]New value: +[
+  "status_metadata_unresolved",
+  "space_role_assignments_degraded",
+  "message_template_metadata_degraded",
+  "viewlet_descriptor_metadata_degraded",
+  "space_preference_metadata_degraded",
+  "approval_request_person_metadata_degraded",
+  "approval_request_count_metadata_degraded",
+  "hosted_huly_shutdown"
+]

Addedv0.44.0Jun 25, 2026

TDQS

A4/5.0

Behavior3/5

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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so the safety profile is fully covered by structured data. The description adds what is returned (input and output schema) but nothing on auth, rate limits, or failure modes; with annotations carrying the load, a 3 is appropriate.

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?

Two sentences, zero filler, with the purpose front-loaded and the routing guidance immediately after. Every clause earns its place.

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 and annotations cover safety, so the description needn't explain return values or side effects. It gives the agent the key decision (when to call before invoke_tool) but could note it is limited to proxy-visible tools' names.

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 the single parameter's meaning ('Exact Huly tool name from search_tools or list_tool_categories results') is documented in the schema itself. The description only vaguely refers to 'one proxy-visible Huly tool' and adds no format or sourcing detail beyond the schema, so the baseline 3 applies.

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?

States a specific verb (Returns) and resource (the exact input and output schema for one proxy-visible Huly tool). It is clearly distinguishable from siblings like search_tools (which discovers tools) and invoke_tool (which calls them), so an agent knows exactly what this returns.

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 usage: 'Use this before invoke_tool when you are not certain about required argument names or result shape.' This names the alternative tool and the condition that selects it, though it doesn't state the inverse (skip when already certain) or other 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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