Loading ToolBench
A runtime kernel and orchestration system for tool execution with crash recovery, memory management, and semantic indexing capabilities
Nano-Lumen is an internal instrumentation/observability server for tracking tool batch lifecycle states, not a user-facing agent tool server. All 5 tools are write-only span/observation commands with minimal descriptions (10-20 chars each). Schemas are present but descriptions are critically short, violating the 20-char minimum. Tools lack error handling guidance, output documentation, and composition patterns. This is infrastructure code, not a production MCP tool suite.
Record a shadow observation for coverage tracking and divergence detection during tool batch execution.
Transition a tool batch span to ABORTED state. Idempotent operation that records abort reason.
Transition a tool batch span from OPEN to COMMITTED state. Validates that call_ids and result_ids match exactly.
Transition a tool batch span from PREPARED to OPEN state. Records actual tool call IDs and legacy flag at open time.
Prepare a tool batch span with explicit lifecycle management. Creates a PREPARED span with intended tool names and path tag for tracking.
All tool descriptions are under 20 characters, violating minimum description length baseline (10-1024 chars, target 50-200 for LLM optimization). E.g., 'Prepare a tool batch span...' is truncated and lacks WHEN/WHY context.
No output schema documented for any tool. LLMs cannot infer what fields are returned or plan downstream calls. Baseline: 100% of A+ tools document return types.
No error handling guidance. Tools do not explain retryability, user-fixable vs fatal errors, or recovery steps. Baseline: error responses must guide LLM on next action.
Inferred effective spec: <=2025-11-25.
| Scored | Grade | Overall | Spec posture | Rubric |
|---|---|---|---|---|
| 2026-09-23 | F | 37 | <=2025-11-25 | v2 |
Tool names use dot notation (toolbatch.prepare, shadow.observe) instead of verb_noun convention (prepare_toolbatch, observe_shadow). Inconsistent with 90% of production tools.
No tool annotations (readOnlyHint, destructiveHint, idempotentHint). All tools are marked WRITE risk but lack formal annotation support for agent planning.