deepseek-ai/deepseek-harness · error · Error

cordis_define `plugin.idPrefix` must contain 3–6 lowercase E

Error message

cordis_define `plugin.idPrefix` must contain 3–6 lowercase English letters

What it means

Error "cordis_define `plugin.idPrefix` must contain 3–6 lowercase English letters" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/extensions/cordis-host-runner/src/index.ts:166

   * @param request - Session ownership, Plugin selection, metadata, and source code.
   * @returns Host-minted Plugin and Package identities with declared-half metadata.
   */
  define(request: DynamicCordisDefineRequest): DynamicCordisDefineReceipt {
    const name = request.name.trim()
    const purpose = request.purpose.trim()
    if (name.length === 0) throw new Error('cordis_define needs a non-empty `name`')
    if (purpose.length === 0) throw new Error('cordis_define needs a non-empty `purpose`')
    if (request.code.host === undefined && request.code.client === undefined) {
      throw new Error('cordis_define needs `code.host`, `code.client`, or both')
    }
    if (request.code.host !== undefined) precheckCode(request.code.host, 'code.host')
    if (request.code.client !== undefined) precheckCode(request.code.client, 'code.client')

    let plugin: DynamicCordisPlugin
    if (request.plugin.kind === 'new') {
      const prefix = request.plugin.idPrefix.trim()
      if (!/^[a-z]{3,6}$/.test(prefix)) {
        throw new Error('cordis_define `plugin.idPrefix` must contain 3–6 lowercase English letters')
      }
      const pluginId = CordisDynamicPluginId(this.registry.mintPluginId(prefix))
      plugin = {
        pluginId,
        sessionId: request.sessionId,
        packages: new Map(),
        approvedClientPackages: new Set(),
        clientVersionUpdatesApproved: false,
      }
      this.registry.add(plugin)
    } else {
      const found = this.registry.get(request.plugin.pluginId)
      if (found === undefined || found.sessionId !== request.sessionId) {
        throw new Error(missingPluginMessage(request.plugin.pluginId))
      }
      plugin = found
    }

View on GitHub (pinned to b150a551b8)

When it happens

Trigger: Thrown at packages/extensions/cordis-host-runner/src/index.ts:166 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/da152be20815dbe1. Report an issue: GitHub.