diff --git a/openspec/changes/tool-types-definition/.openspec.yaml b/openspec/changes/archive/2025-05-18-tool-types-definition/.openspec.yaml similarity index 100% rename from openspec/changes/tool-types-definition/.openspec.yaml rename to openspec/changes/archive/2025-05-18-tool-types-definition/.openspec.yaml diff --git a/openspec/changes/tool-types-definition/design.md b/openspec/changes/archive/2025-05-18-tool-types-definition/design.md similarity index 100% rename from openspec/changes/tool-types-definition/design.md rename to openspec/changes/archive/2025-05-18-tool-types-definition/design.md diff --git a/openspec/changes/tool-types-definition/proposal.md b/openspec/changes/archive/2025-05-18-tool-types-definition/proposal.md similarity index 100% rename from openspec/changes/tool-types-definition/proposal.md rename to openspec/changes/archive/2025-05-18-tool-types-definition/proposal.md diff --git a/openspec/changes/tool-types-definition/specs/tool-types-definition/spec.md b/openspec/changes/archive/2025-05-18-tool-types-definition/specs/tool-types-definition/spec.md similarity index 100% rename from openspec/changes/tool-types-definition/specs/tool-types-definition/spec.md rename to openspec/changes/archive/2025-05-18-tool-types-definition/specs/tool-types-definition/spec.md diff --git a/openspec/changes/tool-types-definition/tasks.md b/openspec/changes/archive/2025-05-18-tool-types-definition/tasks.md similarity index 100% rename from openspec/changes/tool-types-definition/tasks.md rename to openspec/changes/archive/2025-05-18-tool-types-definition/tasks.md