DeepWiki Alternative: MCP Code Graph

This page is for teams who used DeepWiki to get oriented in an open-source dependency (replace github.com with deepwiki.com, read the generated wiki, ask it a question) and are now asking whether the same tool can sit inside an agent working on their own private code. The two overlap on the surface: both index repositories, both answer questions over MCP. They diverge on the thing that matters when an agent is about to make an edit: the shape of what comes back.

What DeepWiki actually is

DeepWiki is Cognition's tool for turning a GitHub repository into a browsable wiki. Cognition is the company behind Devin, and DeepWiki is described as "the free public version of Devin Wiki and Devin Search" (Cognition, DeepWiki). You reach it by replacing github.com with deepwiki.com in any repo URL, and the homepage frames the product as "up-to-date documentation you can talk to, for every repo in the world" (deepwiki.com). Cognition says it has "already indexed over 50,000 of the top public GitHub repos" (Cognition, DeepWiki).

What it produces is documentation for a person to read. DeepWiki analyzes the codebase and generates a set of documentation topics and pages you navigate, plus a chat interface for asking questions about the code. Its own MCP tool names describe the shape precisely: read_wiki_structure "lists documentation topics for a GitHub repository," read_wiki_contents "views documentation about a GitHub repository," and ask_question queries the repo for an AI-generated answer (Devin docs, DeepWiki MCP). Repositories that add a DeepWiki badge to their README get the wiki refreshed automatically when the code changes (CognitionAI/deepwiki).

How each one gives an agent context

Symvanta is not a wiki. It parses each repository into a live graph (nodes are symbols, edges are calls, imports, implements, and instantiates) and exposes that graph as MCP tools the agent calls while it works. An agent runs relate with kind callers and gets the exact set of call sites; it runs kind blast_radius and gets what would break, walked outward from the symbol across files and repositories; find_node returns a symbol's definition and signature by name. The answer is a set of graph edges the agent can act on, not prose it has to read and interpret.

DeepWiki's ask_question is genuinely good at "explain how this repo works," and it is free, which makes it a fast way for a human or an agent to get oriented. What it returns is a synthesized explanation grounded in the generated wiki. When the agent's next step is an edit, the question changes from "explain this" to "who calls updateInvoice, and what breaks if I change its signature." That second question wants a precise, current list of edges, and that is what a graph is built to return. We draw the line in code embeddings vs. code graph: a generated explanation tells you what the code is about, a graph traversal tells you what is actually connected to it.

The DeepWiki MCP server

Both are real MCP servers, so this is where the comparison gets concrete. DeepWiki's is free, remote, and takes no authentication for public repositories. The streamable HTTP endpoint is https://mcp.deepwiki.com/mcp, and an older SSE endpoint at https://mcp.deepwiki.com/sse is deprecated (Devin docs, DeepWiki MCP). Cognition announced it in May 2025 as "completely free with no login or auth required" (Cognition, DeepWiki MCP server).

It exposes three tools, and the names give away the shape: read_wiki_structure lists the documentation topics for a GitHub repository, read_wiki_contents reads those pages, and ask_question returns an AI-generated answer about the repo (Devin docs, DeepWiki MCP). All three take a repository and give back prose. There is no named callers, dependencies, or blast-radius traversal in the public tool set.

Private code goes through a second server. Cognition points private-repo users at the Devin MCP server at https://mcp.devin.ai/mcp, which needs a Devin API key (the cog_ prefix; legacy apk_ keys are rejected) and covers public and private repositories. It carries the same three wiki tools plus list_available_repos, alongside Devin platform tools for sessions, playbooks, knowledge, and schedules (Devin docs, Devin MCP). The free endpoint reads public repos; private repos ride on a Devin subscription.

Symvanta is MCP-first by design: the product is an authenticated MCP endpoint (OAuth2 PKCE, URL-based) plus a dashboard for managing what is indexed. It works with Claude Code, Cursor, Codex, Windsurf, VS Code, Claude Desktop, or any MCP client. The tool set is graph-shaped: find_node for a symbol's definition and signature, relate for callers, dependencies, blast radius, implementers, heritage, and call chains, find_http_route for the handler behind a path and method, with semantic and text search alongside for the cases where matching is the right move. An agent that calls ask_question gets a paragraph it has to trust. An agent that calls relate gets a list of call sites it can open.

Private repos and cross-repo

DeepWiki covers private repositories through Devin. For public code the wiki and MCP server are free with no login; for a private repo you create a Devin account, connect your GitHub, and use the authenticated path (Cognition, DeepWiki, Devin docs, DeepWiki MCP). Devin is Cognition's paid agent product, so private-repo DeepWiki rides on that subscription rather than a standalone DeepWiki price.

Symvanta indexes private code as the default case: connect a repository, get an MCP endpoint, point your agent at it. Cross-repo context comes from explicitly linking repositories in a project, including cross-repo HTTP-call edges where one service calls another's route, and indexing is branch-aware, so an agent can pin a session to a feature branch or query uncommitted working-tree edits. DeepWiki's public docs describe a per-repo generated wiki; they do not describe cross-repo transport edges or branch-level graph queries as features.

Pricing, as of July 2026

DeepWiki's public wiki and its public MCP server are free, no login required (Cognition, DeepWiki MCP server). Private repositories require a Devin account, which is Cognition's paid product; DeepWiki itself does not publish a separate private-repo price.

Symvanta is per seat: Starter at $19/month, Pro at $29 per seat/month with a 7-day trial, Enterprise at $99 per seat/month with a 15-seat minimum. The two are not really priced against each other, because they sell different things: DeepWiki gives away a reading surface for open source and takes private repos through Devin, while Symvanta charges per seat for an agent-facing graph over your own code.

Side by side

Who should pick DeepWiki

If you want to understand an open-source project fast, or give your team a readable, auto-refreshing wiki over a public dependency, DeepWiki is excellent and free, and the URL trick makes it frictionless. As an MCP tool it is a strong "explain this repo" source that any agent can call at no cost. For onboarding and comprehension over public code, it is hard to beat.

Who should pick Symvanta

If the agent's job is to change your private code and you want it to know who calls a function and what breaks before it edits, that is a different tool. Symvanta returns graph edges (callers, dependencies, blast radius) over your own repositories, cross-repo and branch-aware, through an authenticated MCP endpoint. Read blast radius as a code-change impact check for the shape of the answer.

The two can sit side by side: point an agent at DeepWiki to read up on a library, and at Symvanta to reason about your own code before it writes. The fastest way to see the second half is on a repository you actually maintain. Book a 15-minute demo