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Huly MCP

by dearlordylord

Overview Schema Source Related Servers Discussions Admin

Invoke Tool

invoke_tool

Destructive

Call any Huly tool by exact name with arguments to perform read or write operations. Check the tool schema and annotations when safety matters.

Instructions

Invokes one proxy-visible Huly tool by exact name with its arguments. This tool can call read or write Huly operations; check get_tool_schema and the target tool annotations when safety matters.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`toolName`	Yes	Exact Huly tool name to invoke through the proxy.
`arguments`	No	Arguments object for the target Huly tool. Use {} when the target tool accepts no parameters.

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"
+]

Changed6 schema fields changedv0.44.6Aug 13, 2026
- addedInput schema / $schema
```
Added value: +"http://json-schema.org/draft-07/schema#"
```
- removedOutput schema / properties / result / properties / result / title
```
Removed value: -"unknown"
```
- removedOutput schema / properties / result / properties / toolName / $ref
```
Removed value: -"#/$defs/ToolName"
```
- addedOutput schema / properties / result / properties / toolName / allOf
```
Added value: +[
+  {
+    "$ref": "#/$defs/ToolName"
+  }
+]
```
- addedOutput schema / properties / result / properties / toolName / description
```
Added value: +"Exact MCP tool name registered by this server."
```
- removedOutput schema / properties / result / properties / warnings / items
```
Removed value: -{
-  "title": "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

A3.8/5.0

Behavior4/5

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

Annotations already declare destructiveHint=true, idempotentHint=false and readOnlyHint=false, so the safety floor is covered. The description adds the crucial pass-through nuance: this call may execute read or write operations depending on the target, and the target's annotations govern safety. It stops short of describing failure modes for an unknown tool name.

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, no filler. The core action is front-loaded and the safety caveat follows, so the agent gets the primary behavior first.

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?

With an output schema present and full annotation coverage, the definition supplies what an agent needs: the dispatcher nature, exact-name requirement, and the safety caveat. Minor gap: no guidance on what happens when the named tool doesn't exist or when arguments fail target-schema validation.

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%, so both parameters are already documented, including the '{}' convention for argument-less targets. The description's 'by exact name with its arguments' merely restates the schema's 'Exact Huly tool name' wording, adding no new format or validation detail.

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 and resource: invoke one proxy-visible Huly tool by exact name with arguments. It implicitly contrasts with the discovery siblings (get_tool_schema, search_tools) that look tools up rather than run them, though it doesn't name them directly.

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?

It tells the agent to check get_tool_schema and the target tool's annotations 'when safety matters,' which is useful routing guidance. However, it never says how to obtain a valid tool name (search_tools/list_tool_categories) or when not to invoke a tool, leaving the workflow implicit.

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

Other Tools