What is the Neural Link?

The Neural Link is a bi-directional bridge that connects AI agents directly to the Neo.mjs runtime. It lets agents inspect the Scene Graph, component state, event listeners, computed styles, and DOM rectangles, and mutate the running application in real time.

Why is Neo.mjs called an Application Engine instead of a framework?

Neo.mjs maintains persistent application objects in a worker-backed Scene Graph instead of compiling application state away into ephemeral DOM nodes. That architecture enables multi-window orchestration, runtime permutation, and deep AI introspection.

What is Context Engineering?

Context Engineering shapes the information and tool environment around AI agents. Neo.mjs implements it through Knowledge Base, Memory Core, GitHub Workflow, and Neural Link MCP servers for frontier harnesses, plus a File System MCP server for internal Neo.ai.Agent local loops.

What is the Neo.mjs Agent OS?

The Neo.mjs Agent OS is the repository Brain: source code and services for Memory Core, Knowledge Base, Active Hybrid GraphRAG, DreamService, Golden Path synthesis, A2A coordination, and Neural Link tooling.

Frontmatter

id	8201
title	Fix `nextCursor: null` violation and OpenAPI Array Validation in MCP Servers
state	Closed
labels	bugai
assignees	tobiu
createdAt	Dec 29, 2025, 2:33 PM
updatedAt	Dec 29, 2025, 2:42 PM
githubUrl	https://github.com/neomjs/neo/issues/8201
author	tobiu
commentsCount	0
parentIssue	null
subIssues	[]
subIssuesCompleted	0
subIssuesTotal	0
contentTrust
projected
quarantined	0
signals	[]
blockedBy	[]
blocking	[]
closedAt	Dec 29, 2025, 2:42 PM

Fix `nextCursor: null` violation and OpenAPI Array Validation in MCP Servers

Closed v11.18.0/archive-v11-18-0-chunk-1 bugai

tobiu commented on Dec 29, 2025, 2:33 PM

The MCP SDK schema validation requires nextCursor to be string | undefined, but null is being returned in the catch blocks of listTools handlers across all MCP servers (Neural Link, Knowledge Base, GitHub Workflow, Memory Core) and in the default return of ToolService.mjs. This causes a "Invalid input: expected string, received null" error that masks the underlying exception when tool discovery fails.

This task involves updating the logic in:

ai/mcp/ToolService.mjs
ai/mcp/server/neural-link/Server.mjs
ai/mcp/server/knowledge-base/Server.mjs
ai/mcp/server/github-workflow/Server.mjs
ai/mcp/server/memory-core/Server.mjs

Additionally, ai/mcp/validation/OpenApiValidator.mjs needs to be robust against OpenAPI array schemas that do not define an items property (defaulting to any[]).

Fix nextCursor: null violation and OpenAPI Array Validation in MCP Servers

Fix `nextCursor: null` violation and OpenAPI Array Validation in MCP Servers