MCPInstall

linear

Use Symphony's lineargraphql client tool for raw Linear GraphQL operations such as comment editing and upload flows.

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Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/openai/symphony --skill linear
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads linear automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

Linear GraphQL

Use this skill for raw Linear GraphQL work during Symphony app-server sessions.

Primary tool

Use the linear_graphql client tool exposed by Symphony's app-server session. It reuses Symphony's configured Linear auth for the session.

Tool input:

{
  "query": "query or mutation document",
  "variables": {
    "optional": "graphql variables object"
  }
}

Tool behavior:

  • Send one GraphQL operation per tool call.
  • Treat a top-level errors array as a failed GraphQL operation even if the tool call itself completed.
  • Keep queries/mutations narrowly scoped; ask only for the fields you need.

Discovering unfamiliar operations

When you need an unfamiliar mutation, input type, or object field, use targeted introspection through linear_graphql.

List mutation names:

query ListMutations {
  __type(name: "Mutation") {
    fields {
      name
    }
  }
}

Inspect a specific input object:

query CommentCreateInputShape {
  __type(name: "CommentCreateInput") {
    inputFields {
      name
      type {
        kind
        name
        ofType {
          kind
          name
        }
      }
    }
  }
}

Common workflows

Query an issue by key, identifier, or id

Use these progressively:

  • Start with issue(id: $key) when you have a ticket key such as MT-686.
  • Fall back to issues(filter: ...) when you need identifier search semantics.
  • Once you have the internal issue id, prefer issue(id: $id) for narrower reads.

Lookup by issue key:

query IssueByKey($key: String!) {
  issue(id: $key) {
    id
    identifier
    title
    state {
      id
      name
      type
    }
    project {
      id
      name
    }
    branchName
    url
    description
    updatedAt
    links {
      nodes {
        id
        url
        title
      }
    }
  }
}

Lookup by identifier filter:

query IssueByIdentifier($identifier: String!) {
  issues(filter: { identifier: { eq: $identifier } }, first: 1) {
    nodes {
      id
      identifier
      title
      state {
        id
        name
        type
      }
      project {
        id
        name
      }
      branchName
      url
      description
      updatedAt
    }
  }
}

Resolve a key to an internal id:

query IssueByIdOrKey($id: String!) {
  issue(id: $id) {
    id
    identifier
    title
  }
}

Read the issue once the internal id is known:

query IssueDetails($id: String!) {
  issue(id: $id) {
    id
    identifier
    title
    url
    description
    state {
      id
      name
      type
    }
    project {
      id
      name
    }
    attachments {
      nodes {
        id
        title
        url
        sourceType
      }
    }
  }
}

Query team workflow states for an issue

Use this before changing issue state when you need the exact stateId:

query IssueTeamStates($id: String!) {
  issue(id: $id) {
    id
    team {
      id
      key
      name
      states {
        nodes {
          id
          name
          type
        }
      }
    }
  }
}

Edit an existing comment

Use commentUpdate through linear_graphql:

mutation UpdateComment($id: String!, $body: String!) {
  commentUpdate(id: $id, input: { body: $body }) {
    success
    comment {
      id
      body
    }
  }
}

Create a comment

Use commentCreate through linear_graphql:

mutation CreateComment($issueId: String!, $body: String!) {
  commentCreate(input: { issueId: $issueId, body: $body }) {
    success
    comment {
      id
      url
    }
  }
}

Move an issue to a different state

Use issueUpdate with the destination stateId:

mutation MoveIssueToState($id: String!, $stateId: String!) {
  issueUpdate(id: $id, input: { stateId: $stateId }) {
    success
    issue {
      id
      identifier
      state {
        id
        name
      }
    }
  }
}

Attach a GitHub PR to an issue

Use the GitHub-specific attachment mutation when linking a PR:

mutation AttachGitHubPR($issueId: String!, $url: String!, $title: String) {
  attachmentLinkGitHubPR(
    issueId: $issueId
    url: $url
    title: $title
    linkKind: links
  ) {
    success
    attachment {
      id
      title
      url
    }
  }
}

If you only need a plain URL attachment and do not care about GitHub-specific link metadata, use:

mutation AttachURL($issueId: String!, $url: String!, $title: String) {
  attachmentLinkURL(issueId: $issueId, url: $url, title: $title) {
    success
    attachment {
      id
      title
      url
    }
  }
}

Introspection patterns used during schema discovery

Use these when the exact field or mutation shape is unclear:

query QueryFields {
  __type(name: "Query") {
    fields {
      name
    }
  }
}
query IssueFieldArgs {
  __type(name: "Query") {
    fields {
      name
      args {
        name
        type {
          kind
          name
          ofType {
            kind
            name
            ofType {
              kind
              name
            }
          }
        }
      }
    }
  }
}

Upload a video to a comment

Do this in three steps:

  1. Call linear_graphql with fileUpload to get uploadUrl, assetUrl, and any required upload headers.
  2. Upload the local file bytes to uploadUrl with curl -X PUT and the exact headers returned by fileUpload.
  3. Call linear_graphql again with commentCreate (or commentUpdate) and include the resulting assetUrl in the comment body.

Useful mutations:

mutation FileUpload(
  $filename: String!
  $contentType: String!
  $size: Int!
  $makePublic: Boolean
) {
  fileUpload(
    filename: $filename
    contentType: $contentType
    size: $size
    makePublic: $makePublic
  ) {
    success
    uploadFile {
      uploadUrl
      assetUrl
      headers {
        key
        value
      }
    }
  }
}

Usage rules

  • Use linear_graphql for comment edits, uploads, and ad-hoc Linear API queries.
  • Prefer the narrowest issue lookup that matches what you already know: key -> identifier search -> internal id.
  • For state transitions, fetch team states first and use the exact stateId instead of hardcoding names inside mutations.
  • Prefer attachmentLinkGitHubPR over a generic URL attachment when linking a GitHub PR to a Linear issue.
  • Do not introduce new raw-token shell helpers for GraphQL access.
  • If you need shell work for uploads, only use it for signed upload URLs returned by fileUpload; those URLs already carry the needed authorization.

FAQ

What does the linear skill do?

Use Symphony's lineargraphql client tool for raw Linear GraphQL operations such as comment editing and upload flows.

How do I install linear?

Run npx skills add https://github.com/openai/symphony --skill linear in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/linear/ (personal) or .claude/skills/linear/ (project).

Which AI agents can use linear?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is linear safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains linear?

It is published by openai in openai/symphony, and it is an official skill from the maker of the technology it covers. It has 221 recorded installs.

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