CodeIndexer helps a running AI agent search and understand the codebase. ShardStitch rebuilds the working state when the old session cannot continue.
Quick answer: Use CodeIndexer while the agent is alive and can still call MCP tools. Use ShardStitch when the session is dead, stale, rate-limited, untrusted, deleted, or moving to another AI tool.
CodeIndexer is positioned as a local-first code intelligence layer for AI coding agents. Public copy describes a Rust-powered binary, code graph, semantic search, persistent memory, stale detection, and 32 MCP tools for active coding sessions.
That means it overlaps with the live-agent side of ShardStitch's world: indexing, retrieval, memory, graph context, and MCP access while the current agent is still operational.
Source: CodeIndexer's public website.
CodeIndexer is useful when the current AI session can still ask for context. It makes the living agent better at finding the right code, remembering useful facts, and navigating a repo.
ShardStitch takes over after that breaks: the chat is stale, the provider blocks you, the session is deleted, the model is untrusted, or you need to move the work into Codex, Claude, Cursor, Gemini, Grok, or another tool.
CodeIndexer feeds a running agent. ShardStitch hands the next agent a verified continuation packet.
| Capability | CodeIndexer | ShardStitch |
|---|---|---|
| Primary job | Codebase indexing, semantic search, memory, and MCP context for live AI agents | After-death recovery and cross-tool continuation for AI coding sessions |
| When it runs | During an active coding session, while the agent can still call tools | After or between sessions, when the next AI needs a clean pickup state |
| Works after session death | Not the main job; it improves the agent while the workflow is live | Yes; dead, stale, rate-limited, deleted, or untrusted sessions are the core use case |
| Context source | Indexed code graph, semantic search, stored observations, and MCP-retrieved repo context | Git diff, changed files, recent commits, dependency graph, project memory, failed attempts, decisions, verification state, and next action |
| Verified vs inferred split | Ranks and retrieves relevant code intelligence for the active agent | Separates disk-truth evidence from inferred next steps in the handoff |
| Cross-tool handoff | Can help multiple agents that integrate with its MCP surface | Creates formatted pickup packets for 31 AI handoff targets across native integrations and web-chat handoff |
| MCP surface | Public site describes 32 MCP tools | 49 MCP tools across scan, recall, handoff, council, audit, and recovery workflows |
| Best buyer | Developers who want live agents to search and understand a repo better | Developers who lose time rebuilding state after long, stale, blocked, or switched sessions |
| Pricing posture | See CodeIndexer for current pricing | $49 one-time lifetime license |
If your only problem is "my active agent needs better code search," CodeIndexer is in its lane. That is exactly the kind of live context tool it appears designed to be.
ShardStitch should not market itself as just another repo indexer. Its stronger claim is narrower: when the current AI session can no longer be trusted or used, ShardStitch rebuilds the next session from what actually changed on disk.
CodeIndexer states that recall is only as good as what past sessions wrote down. That is the exact failure ShardStitch is built to survive: the note was never written, the memory is stale, or the old agent is gone.
A searchable repository is not an unfinished task. A memory card is not verified current evidence.
Your main problem is live code retrieval: the current agent needs indexed, searchable, graph-aware codebase context.
Your main problem is continuity: the old session is unusable and the next agent needs a clean, verified working state.
CodeIndexer is stronger at deep live code search. It still cannot recover intent or rejected work that no session wrote down. ShardStitch is stronger at reconstructing the next safe action from the project that actually survived.
· CodeIndexer is an independent product and trademark of its respective owner. This comparison reflects publicly documented behavior and may change as either product evolves.