Atlassian plugin tool names exceed 64 character API limit
Resolved 💬 3 comments Opened Jan 26, 2026 by tflaim Closed Jan 26, 2026
Description
The Atlassian plugin (atlassian@claude-plugins-official) creates MCP tool names that hit or exceed the 64-character API limit, causing API errors.
Error Message
API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.8.content.0.tool_result.content.0.tool_reference.tool_name: String should have at most 64 characters"}}
Root Cause
The plugin creates an MCP server named plugin:atlassian:atlassian, which generates tool names following the pattern:
mcp__plugin_atlassian_atlassian__<toolName>
This prefix alone is 33 characters, leaving only 31 characters for the actual tool name. Several Atlassian tools exceed this:
mcp__plugin_atlassian_atlassian__getAccessibleAtlassianResources= 64 chars (at limit)- Other tools with long names likely exceed it
Expected Behavior
Tool names should stay well under the 64-character limit. The doubled atlassian in the server name (plugin_atlassian_atlassian) seems unnecessary.
Suggested Fix
Use a shorter server naming convention for plugins, e.g.:
mcp__atlassian__<toolName>instead ofmcp__plugin_atlassian_atlassian__<toolName>
Environment
- Claude Code CLI
- Plugin:
atlassian@claude-plugins-officialversion7caef65e1070 - macOS
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