/issue-fields-migration

Projects V2 API Reference (for Migration)

This reference covers the subset of the Projects V2 API needed for field migration: discovering project fields and reading item values.

List Project Fields

Via MCP Tool

mcp__github__projects_list(
  owner: "{org}",
  project_number: {n},
  method: "list_project_fields"
)

Via GraphQL

gh api graphql -f query='
  query {
    organization(login: "ORG") {
      projectV2(number: N) {
        fields(first: 30) {
          pageInfo { hasNextPage endCursor }
          nodes {
            ... on ProjectV2Field {
              id
              name
              dataType
            }
            ... on ProjectV2SingleSelectField {
              id
              name
              dataType
              options { id name }
            }
            ... on ProjectV2IterationField {
              id
              name
              dataType
            }
          }
        }
      }
    }
  }'

Field Data Types

List Project Items (with field values)

Via MCP Tool

mcp__github__projects_list(
  owner: "{org}",
  project_number: {n},
  method: "list_project_items"
)

Returns paginated results. Each item includes:

• Item type (ISSUE, DRAFT_ISSUE, PULL_REQUEST)
• Content reference (repo owner, repo name, issue number)
• Field values for all project fields

Via GraphQL

gh api graphql -f query='
  query($cursor: String) {
    organization(login: "ORG") {
      projectV2(number: N) {
        items(first: 100, after: $cursor) {
          pageInfo { hasNextPage endCursor }
          nodes {
            type
            content {
              ... on Issue {
                number
                repository { nameWithOwner }
              }
            }
            fieldValues(first: 20) {
              pageInfo { hasNextPage endCursor }
              nodes {
                ... on ProjectV2ItemFieldTextValue { text field { ... on ProjectV2Field { name } } }
                ... on ProjectV2ItemFieldSingleSelectValue { name field { ... on ProjectV2SingleSelectField { name } } }
                ... on ProjectV2ItemFieldNumberValue { number field { ... on ProjectV2Field { name } } }
                ... on ProjectV2ItemFieldDateValue { date field { ... on ProjectV2Field { name } } }
              }
            }
          }
        }
      }
    }
  }' -f cursor="$CURSOR"

Important Notes for Migration

• Pagination: projects can have up to 10,000 items. Always paginate using pageInfo.hasNextPage and pageInfo.endCursor.
• Draft items: items with type: DRAFT_ISSUE have no real issue attached. Skip these during migration.
• Pull requests: items with type: PULL_REQUEST are PRs, not issues. Issue fields apply to issues only. Skip these.
• Cross-repo: a single project can contain issues from many repositories. Group items by repo to batch repo ID lookups.
• Field value access: each field value node type is different (ProjectV2ItemFieldTextValue, ProjectV2ItemFieldSingleSelectValue, etc.). Handle each type.