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Polarion MCP Server

Polarion MCP Server

by phillipboesger
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Hybrid

patchPageAttachment

Idempotent

Update metadata (such as title) on an existing Rich Page attachment or replace its stored file while preserving the attachment ID. Validate changes first with dry_run.

Instructions

Updates one existing Rich Page attachment: its metadata (e.g. title) via requestBody.resource, and optionally replaces the stored file by passing base64-encoded bytes in requestBody.content. The attachment keeps its ID. Use this to rename or re-upload a file that already exists; to add a new file use postPageAttachments, and to read the current file use getPageAttachmentContent. 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 validate the arguments and preview the exact request without sending it to Polarion. The executor returns this preview as normal text, and as structured content when the tool declares an output schema.

Input 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.
spaceIdYesThe Document Space ID (a folder-like grouping of documents/pages within a project). Use `_default` (no quotes) to address the project's default space.
pageNameYesThe Rich Page's ID/name within its space — its stable identifier, not its display title.
projectIdYesThe Polarion project ID (its URL segment, e.g. `myproject`), case-sensitive. Required to scope the request to one project. If the ID is unknown, ask the user; getProjects lists IDs only with global read access.
requestBodyNoAttachment metadata and file data.
attachmentIdYesThe attachment's ID, as returned by the corresponding list- or get-attachments call for this resource.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv1.4.4
    • changedInput schema / properties / projectId / description
      Previous 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."New value: +"The Polarion project ID (its URL segment, e.g. `myproject`), case-sensitive. Required to scope the request to one project. If the ID is unknown, ask the user; getProjects lists IDs only with global read access."
  2. Changed5 schema fields changedv1.2.0
    • changedInput schema / properties / attachmentId / description
      Previous value: -"The Attachment ID."New value: +"The attachment's ID, as returned by the corresponding list- or get-attachments call for this resource."
    • 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 / pageName / description
      Previous value: -"The Page name."New value: +"The Rich Page's ID/name within its space — its stable identifier, not its display title."
    • 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 / spaceId / description
      Previous value: -"The Space ID. (Use '_default' without quotes to address the default Space.)"New value: +"The Document Space ID (a folder-like grouping of documents/pages within a project). Use `_default` (no quotes) to address the project's default space."
  3. Added

TDQS

A4.5/5.0
Behavior4/5

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

Adds real context beyond the annotations: the attachment retains its ID, content replaces rather than appends the stored file, and dry_run produces a preview with redacted Authorization header. The idempotency sentence largely restates idempotentHint=true, and no auth/rate-limit detail is given for this openWorldHint tool, so it stops short of a 5.

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?

Front-loaded with the core action, then alternatives, then the idempotency note and tip. Every sentence is relevant, though the trailing explanation of how the executor surfaces dry_run previews (text vs. structured content) is instrumentation detail that adds little for tool selection.

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?

For a 6-parameter mutation with rich annotations but no output schema, the description covers what changes, what persists, and how to safely validate first. The normal (non-dry-run) success response is left uncharacterized, a minor gap given no output schema exists.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the baseline is 3, but the description earns more by unpacking the opaque `requestBody` string into its `resource` (metadata, e.g. title) and `content` (base64 bytes) halves, which the schema does not explain. It still doesn't enumerate the metadata fields accepted or the encoding constraints.

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?

Opens with a specific verb+resource ('Updates one existing Rich Page attachment') and immediately scopes what can be changed (metadata vs. file content) while noting the ID is preserved. It explicitly distinguishes itself from postPageAttachments and getPageAttachmentContent, so an agent can route correctly without reading sibling schemas.

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

Usage Guidelines5/5

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

States the use case ('rename or re-upload a file that already exists') and names both alternatives with the conditions that select them ('to add a new file use postPageAttachments', 'to read the current file use getPageAttachmentContent'). It also prescribes a recommended dry_run-first workflow.

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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