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Polarion MCP Server

patchWorkItemRelationships

Idempotent

Update a work item's relationships in Polarion, such as linked items or assignees, with idempotent calls and a dry-run option to preview changes before applying.

Instructions

Updates a list of Work Item Relationships. Effect: idempotent — calling it again with the same input leaves the resource in the same end state, with no additional side effects. Tip: set dry_run: true first to preview the exact request Polarion would receive, without changing anything. On tools with a typed output schema, this preview is returned as an error-flagged result since it is not real tool output -- read the text content regardless of that flag.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
dry_runNoIf true, validates the request and returns the exact request that would be sent to Polarion — with the Authorization header redacted and any binary payload summarized by byte length — without actually sending it.
projectIdYesThe Polarion project ID (its URL segment, e.g. `myproject`), case-sensitive. Required to scope the request to one project; call getProjects to list valid IDs.
workItemIdYesThe Work Item's ID within its project (e.g. `WI-123`), not the combined `project/id` path used in some link payloads.
requestBodyYesThe Relationship body.
relationshipIdYesThe relationship's name as it appears under `relationships` in the owning resource (e.g. `assignee`, `author`, `watches`, `linkedWorkItems`), not an ID of an individual link entry.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv1.2.2
    • changedInput schema / properties / relationshipId / description
      Previous value: -"The ID of the specific relationship entry linking the two resources, as returned by the corresponding get-relationships call."New value: +"The relationship's name as it appears under `relationships` in the owning resource (e.g. `assignee`, `author`, `watches`, `linkedWorkItems`), not an ID of an individual link entry."
  2. Changed4 schema fields changedv1.2.0
    • changedInput schema / properties / dry_run / description
      Previous value: -"If true, validate and return the request that would be sent without calling Polarion."New value: +"If true, validates the request and returns the exact request that would be sent to Polarion — with the Authorization header redacted and any binary payload summarized by byte length — without actually sending it."
    • changedInput schema / properties / projectId / description
      Previous value: -"The Project ID."New value: +"The Polarion project ID (its URL segment, e.g. `myproject`), case-sensitive. Required to scope the request to one project; call getProjects to list valid IDs."
    • changedInput schema / properties / relationshipId / description
      Previous value: -"The Relationship ID."New value: +"The ID of the specific relationship entry linking the two resources, as returned by the corresponding get-relationships call."
    • changedInput schema / properties / workItemId / description
      Previous value: -"The Work Item ID."New value: +"The Work Item's ID within its project (e.g. `WI-123`), not the combined `project/id` path used in some link payloads."
  3. Changed2 schema fields changed
    • addedInput schema / properties / dry_run
      Added value: +{
      +  "description": "If true, validate and return the request that would be sent without calling Polarion.",
      +  "type": "boolean"
      +}
    • changedInput schema / properties / requestBody / oneOf
      Previous value: -[
      -  {
      -    "properties": {
      -      "data": {
      -        "properties": {
      -          "id": {
      -            "example": "MyProjectId/MyResourceId",
      -            "type": "string"
      -          },
      -          "type": {
      -            "enum": [
      -              "categories",
      -              "documents",
      -              "document_attachments",
      -              "document_comments",
      -              "document_parts",
      -              "enumerations",
      -              "globalroles",
      -              "icons",
      -              "jobs",
      -              "linkedworkitems",
      -              "externallylinkedworkitems",
      -              "linkedoslcresources",
      -              "pages",
      -              "page_attachments",
      -              "plans",
      -              "projectroles",
      -              "projectgroups",
      -              "projects",
      -              "projecttemplates",
      -              "spaces",
      -              "testparameters",
      -              "testparameter_definitions",
      -              "testrecords",
      -              "teststep_results",
      -              "testruns",
      -              "testrun_attachments",
      -              "teststepresult_attachments",
      -              "testrun_comments",
      -              "usergroups",
      -              "users",
      -              "workitems",
      -              "workitem_attachments",
      -              "workitem_approvals",
      -              "workitem_comments",
      -              "featureselections",
      -              "teststeps",
      -              "workrecords",
      -              "revisions",
      -              "testrecord_attachments"
      -            ],
      -            "type": "string"
      -          }
      -        },
      -        "type": "object"
      -      }
      -    },
      -    "type": "object"
      -  },
      -  {
      -    "properties": {
      -      "data": {
      -        "items": {
      -          "properties": {
      -            "id": {
      -              "example": "MyProjectId/MyResourceId",
      -              "type": "string"
      -            },
      -            "type": {
      -              "enum": [
      -                "categories",
      -                "documents",
      -                "document_attachments",
      -                "document_comments",
      -                "document_parts",
      -                "enumerations",
      -                "globalroles",
      -                "icons",
      -                "jobs",
      -                "linkedworkitems",
      -                "externallylinkedworkitems",
      -                "linkedoslcresources",
      -                "pages",
      -                "page_attachments",
      -                "plans",
      -                "projectroles",
      -                "projectgroups",
      -                "projects",
      -                "projecttemplates",
      -                "spaces",
      -                "testparameters",
      -                "testparameter_definitions",
      -                "testrecords",
      -                "teststep_results",
      -                "testruns",
      -                "testrun_attachments",
      -                "teststepresult_attachments",
      -                "testrun_comments",
      -                "usergroups",
      -                "users",
      -                "workitems",
      -                "workitem_attachments",
      -                "workitem_approvals",
      -                "workitem_comments",
      -                "featureselections",
      -                "teststeps",
      -                "workrecords",
      -                "revisions",
      -                "testrecord_attachments"
      -              ],
      -              "type": "string"
      -            }
      -          },
      -          "type": "object"
      -        },
      -        "type": "array"
      -      }
      -    },
      -    "type": "object"
      -  }
      -]New value: +[
      +  {
      +    "properties": {
      +      "data": {
      +        "properties": {
      +          "id": {
      +            "example": "MyResourceId",
      +            "type": "string"
      +          },
      +          "type": {
      +            "enum": [
      +              "collections",
      +              "categories",
      +              "documents",
      +              "document_attachments",
      +              "document_comments",
      +              "document_parts",
      +              "enumerations",
      +              "globalroles",
      +              "icons",
      +              "jobs",
      +              "linkedworkitems",
      +              "externallylinkedworkitems",
      +              "linkedoslcresources",
      +              "llms",
      +              "pages",
      +              "page_attachments",
      +              "page_comments",
      +              "plans",
      +              "projectroles",
      +              "projectgroups",
      +              "projects",
      +              "projecttemplates",
      +              "spaces",
      +              "testparameters",
      +              "testparameter_definitions",
      +              "testrecords",
      +              "teststep_results",
      +              "testruns",
      +              "testrun_attachments",
      +              "teststepresult_attachments",
      +              "testrun_comments",
      +              "usergroups",
      +              "users",
      +              "workitems",
      +              "workitem_attachments",
      +              "workitem_approvals",
      +              "workitem_comments",
      +              "featureselections",
      +              "teststeps",
      +              "workrecords",
      +              "revisions",
      +              "testrecord_attachments",
      +              "license_slots",
      +              "license_types",
      +              "license",
      +              "metadata",
      +              "license_assignments",
      +              "customfields"
      +            ],
      +            "type": "string"
      +          }
      +        },
      +        "type": "object"
      +      }
      +    },
      +    "type": "object"
      +  },
      +  {
      +    "properties": {
      +      "data": {
      +        "items": {
      +          "properties": {
      +            "id": {
      +              "example": "MyResourceId",
      +              "type": "string"
      +            },
      +            "type": {
      +              "enum": [
      +                "collections",
      +                "categories",
      +                "documents",
      +                "document_attachments",
      +                "document_comments",
      +                "document_parts",
      +                "enumerations",
      +                "globalroles",
      +                "icons",
      +                "jobs",
      +                "linkedworkitems",
      +                "externallylinkedworkitems",
      +                "linkedoslcresources",
      +                "llms",
      +                "pages",
      +                "page_attachments",
      +                "page_comments",
      +                "plans",
      +                "projectroles",
      +                "projectgroups",
      +                "projects",
      +                "projecttemplates",
      +                "spaces",
      +                "testparameters",
      +                "testparameter_definitions",
      +                "testrecords",
      +                "teststep_results",
      +                "testruns",
      +                "testrun_attachments",
      +                "teststepresult_attachments",
      +                "testrun_comments",
      +                "usergroups",
      +                "users",
      +                "workitems",
      +                "workitem_attachments",
      +                "workitem_approvals",
      +                "workitem_comments",
      +                "featureselections",
      +                "teststeps",
      +                "workrecords",
      +                "revisions",
      +                "testrecord_attachments",
      +                "license_slots",
      +                "license_types",
      +                "license",
      +                "metadata",
      +                "license_assignments",
      +                "customfields"
      +              ],
      +              "type": "string"
      +            }
      +          },
      +          "type": "object"
      +        },
      +        "type": "array"
      +      }
      +    },
      +    "type": "object"
      +  }
      +]
  4. First observedv1.0.0

TDQS

A3.5/5.0
Behavior4/5

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

The description adds valuable behavioral context beyond annotations: it reiterates idempotency (also in annotations), explains the dry_run preview behavior, and warns that previews appear as error-flagged results. This goes beyond the idempotentHint annotation and provides a practical gotcha.

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?

The description is front-loaded with the purpose and then adds useful behavioral details. It is slightly verbose with the idempotency statement (redundant with annotation) but remains efficient overall. The dry_run tip and error-flag caveat are valuable.

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?

Given the complexity of 5 parameters including a nested oneOf requestBody, the description covers the key operational aspects: idempotency, dry_run preview, and the error-flag behavior. It doesn't explain return values (no output schema) or explicit alternatives, but the core usage context is sufficient for a capable agent.

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 the baseline is 3. The description does not add parameter semantics beyond the schema; the dry_run tip is already present in the schema description. No additional meaning is provided for projectId, workItemId, relationshipId, or requestBody.

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?

The description clearly states a specific action ('Updates a list of Work Item Relationships') with a specific resource. It distinguishes from read (get) and create (post) by the verb 'Updates', though it doesn't explicitly name sibling alternatives.

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

Usage Guidelines2/5

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

No guidance on when to use this tool versus the sibling tools like postWorkItemRelationships (create) or deleteWorkItemsRelationship (delete). The description implies updating existing relationships but never explicitly contrasts with alternatives or states prerequisites.

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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