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 code. The two overlap on the surface: both index repositories, both answer questions over MCP. They diverge on the shape of what comes back, which is the thing that matters when an agent is about to make an edit.
What DeepWiki is today
DeepWiki is Cognition's documentation product for GitHub repositories. Cognition is the company behind Devin, and it describes DeepWiki as "the free public version of Devin Wiki and Devin Search", reached by replacing github.com with deepwiki.com in a repository URL (Cognition, DeepWiki). Public repositories can be added for indexing, and the site frames the output as "up-to-date documentation you can talk to, for every repo in the world", a vendor claim rather than a measured coverage figure (deepwiki.com).
What it produces is documentation for a person to read: architecture diagrams, a navigable set of documentation pages, source links, and a chat surface for asking questions about the code (Devin docs, DeepWiki repository wikis). Repositories that add a DeepWiki badge to their README are auto-refreshed when the code changes (CognitionAI/deepwiki). At launch in May 2025, Cognition said it had indexed over 50,000 of the top public GitHub repositories; the site does not publish a current count (Cognition, DeepWiki).
One boundary is worth stating precisely: the public surface is documented as basic documentation and Q&A. Cognition says the "full Ask Devin experience, including advanced code search, planning, and session creation, is available in the Devin app", while the public DeepWiki site and its MCP server provide the documentation and question-answering half (Devin docs, DeepWiki repository wikis).
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, kind blast_radius and gets what a change would touch, find_node for a symbol's definition and signature, find_http_route for the handler behind a path and method, and diff_impact for a whole change set. The answer is a set of graph edges with source locations, not prose the agent has to interpret (Symvanta MCP server). The code graph MCP servers comparison puts that architecture next to instance and local alternatives.
DeepWiki 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. ask_question returns a context-grounded answer synthesized from the generated wiki and Devin's understanding of the repository. 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 DeepWiki's published tool set does not name a caller or blast-radius traversal. That is a difference in what each product documents as a first-class primitive, not a claim that a generated answer is useless before an edit; the graph is simply built to return the edges directly. We draw the broader line in code embeddings vs. code graph.
The DeepWiki MCP server
Both are real MCP servers, so this is where the comparison gets concrete. DeepWiki's public server is "a free, remote, no-authentication-required service that provides access to public repositories". The streamable HTTP endpoint is https://mcp.deepwiki.com/mcp, which the docs recommend, and an older SSE endpoint at https://mcp.deepwiki.com/sse is a legacy protocol being 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 describe the shape:
read_wiki_structuregets "a list of documentation topics for a GitHub repository".read_wiki_contentsviews "documentation about a GitHub repository".ask_questionasks "any question about a GitHub repository" and gets "an AI-powered, context-grounded response".
All three take a repository and return topics, page contents, or a synthesized answer. Current docs name no callers, dependencies, or blast-radius traversal in that tool set (checked September 21, 2026) (Devin docs, DeepWiki MCP). The server covers repositories indexed on deepwiki.com, and the launch post notes that indexed repositories are reachable from both the site and the MCP server (Cognition, DeepWiki MCP server).
Symvanta is MCP-first by design: the product is an authenticated endpoint at https://mcp.symvanta.com/mcp (OAuth 2.0 with PKCE for interactive clients, plus a scoped API credential for CI runners and cloud agents) and 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, relate with kinds callers, dependencies, blast_radius, implementers, heritage, and chain, find_http_route, and diff_impact, with semantic and text search alongside for the cases where matching is the right move. An agent that calls ask_question gets an answer it has to interpret. An agent that calls relate gets a list of call sites it can open.
Private repositories and the Devin MCP server
Private code goes through Devin, not the public DeepWiki endpoint. Cognition tells private-repository users to sign up for a Devin account and use the Devin MCP server with a Devin API key (Devin docs, DeepWiki MCP). Indexing is a step in the Devin app: connect the repository, select the branches to analyze, and DeepWiki and Ask Devin work against those indexed branches (Devin docs, Index a Repository).
The Devin MCP server at https://mcp.devin.ai/mcp is authenticated and covers public and private repositories. It needs a Devin API key with the cog_ prefix; legacy apk_ and apk_user_ keys are not supported, and enterprise service user keys and personal access tokens also require an X-Org-Id header. It carries the same three wiki tools plus list_available_repos, which lists the repositories available to your account, alongside Devin platform tools for sessions, playbooks, knowledge, schedules, and integrations (Devin docs, Devin MCP).
Two capabilities there are worth being fair about. Devin's ask_question accepts "one or more repositories (up to 10)", so question answering can span repositories. Devin also generates its wikis from the branches you index, and the wiki can be steered with a .devin/wiki.json file that lists the pages you want, with a maximum of 30 pages, or 80 for enterprise organizations (Devin docs, Devin MCP, Devin docs, DeepWiki repository wikis). What the published tool set still does not expose is typed relationship traversal: callers, dependencies, and blast radius are not named tools, and uncommitted working-tree queries are not documented (checked September 21, 2026).
Cost and access, as of September 2026
The public wiki and the public MCP server are free with no login (Cognition, DeepWiki MCP server). Private repositories require a Devin account rather than a standalone DeepWiki purchase, and DeepWiki access is listed among the inclusions of Devin's Free plan, so private-repository wikis are not gated behind the paid tiers by themselves (Devin docs, Self-serve plans).
Wiki generation is where usage can cost money. Devin runs wiki generation at three effort levels, configurable per organization and overridable per repository: low (free, the default), medium at roughly 5 to 10 ACUs per wiki, and high at roughly 20 to 40 ACUs per wiki. Medium and high require an active subscription or a positive credit balance, and enterprise organizations always run at low effort (Devin docs, DeepWiki repository wikis). Devin's plans are Free at $0, Pro at $20 per month, Max at $200 per month, Teams at $80 per month plus $40 per full seat with free flex seats, and Enterprise on a custom contract, with on-demand credits funding usage past an included quota; legacy ACU-based plans were migrated to credits at the same dollar value (Devin pricing, Devin docs, Self-serve plans).
Symvanta is per seat for the agent-facing graph over your own repositories. Starter is $19 per month for one seat, with up to 5 repositories, 2 projects, and 2 tracked feature branches. Pro is $29 per user per month with unlimited repositories, 5 tracked feature branches per seat, SSO/SAML, and customer-managed encryption keys. Enterprise is $99 per seat per month with a 15-seat minimum on an annual contract, adding on-prem and self-hosting, SCIM, audit logs, bring-your-own-LLM, and a dedicated SLA. Every plan starts with a 7-day trial that needs no card, Starter add-ons are $3 per repository and $5 per project per month, and a seat can query the graph without a metered AI credit line (Symvanta pricing).
Side by side
| DeepWiki | Symvanta | |
|---|---|---|
| What it produces | Generated wiki pages, architecture diagrams, and grounded Q&A | Live queryable code graph (symbols and typed edges) |
| Built for | A human or agent reading up on a codebase | An agent making an edit and checking impact |
| Ownership | Cognition, the company behind Devin; the free public face of Devin Wiki and Devin Search | Independent product |
| Public repositories | Free, no login for the wiki and the MCP server | Index your own repositories |
| Private repositories | Through a Devin account and the authenticated Devin MCP server | Default case, private by design |
| MCP tools | read_wiki_structure, read_wiki_contents, ask_question; Devin MCP adds list_available_repos and platform tools |
find_node, relate (callers, dependencies, blast_radius, implementers, heritage, chain), find_http_route, diff_impact, plus semantic and text search |
| Multi-repository Q&A | Up to 10 repositories per ask_question call on the Devin MCP server |
Linked repositories in one project graph |
| Cross-repo typed edges | Not named in the published tool set | HTTP call to route, SQL access to ORM model, queue producer to consumer |
| Branch and working-tree context | Branches selected when indexing in Devin; no documented working-tree overlay | Tracked feature branches plus a ref overlay for uncommitted edits |
| Cost shape (September 2026) | Public free; private on a Devin account, with low-effort wikis free and higher effort drawn from ACUs | Starter $19/mo; Pro $29/seat/mo; Enterprise $99/seat/mo with a 15-seat minimum |
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, and its question answering can span multiple repositories through the Devin MCP server. For onboarding and comprehension, over public code or over your own repository, it is hard to beat on price.
Who should pick Symvanta
If the agent's job is to change your 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, across linked repositories and tracked branches, through an authenticated MCP endpoint, with no per-answer metering. Read blast radius as a code-change impact check for the shape of the answer, and find callers for the query an agent runs first.
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.
Frequently asked questions
Is Symvanta a good DeepWiki alternative?
For understanding a codebase, DeepWiki's free wiki and Q&A are hard to beat, and for public repositories they cost nothing. For an agent about to edit your own code, Symvanta answers a different question: it returns graph edges (callers, dependencies, blast radius) instead of generated documentation. Many teams use both, DeepWiki for reading up on a dependency and Symvanta for reasoning about their own code before a change.
What is the difference between Symvanta and DeepWiki?
DeepWiki, built by Cognition, generates a browsable wiki and grounded question answering for a repository, with private repositories handled through a Devin account. Symvanta is a live, queryable code graph: an agent calls relate and gets a list of callers or a blast radius, resolved from parsed edges with source locations, rather than an explanation it has to interpret. Both speak MCP, so the choice usually comes down to what the agent needs next.
Does DeepWiki cover private repositories?
Yes, through a Devin account rather than the public endpoint. The free public wiki and DeepWiki MCP server are documented for public repositories only, while the authenticated Devin MCP server at https://mcp.devin.ai/mcp covers public and private repositories using a Devin API key. Devin's Free plan includes DeepWiki access, and higher-effort wiki generation draws on paid usage credits. Symvanta indexes private repositories as the default case, with no separate agent product required.
Can DeepWiki answer across more than one repository?
Yes, with the Devin MCP server: its ask_question tool accepts up to 10 repositories per call, alongside list_available_repos for discovering what your account can query. What the published tool set does not offer is typed traversal between repositories, such as matching an HTTP call in one service to the route that serves it, which Symvanta exposes as cross-repo edges in a single project graph.
Is DeepWiki free?
The public DeepWiki site and the public MCP server are free with no login or authentication, for public repositories. Private-repository wikis require a Devin account, and wiki generation at medium or high effort consumes ACUs against a subscription or credit balance; low-effort generation is free. Symvanta's plans start at $19 per month for one seat with a 7-day trial that needs no card.
Sources checked on September 21, 2026: DeepWiki MCP docs, DeepWiki repository wikis, Devin MCP, Index a Repository, Devin self-serve plans, Devin pricing, Cognition DeepWiki launch, DeepWiki MCP launch, CognitionAI/deepwiki, deepwiki.com. The next review is due 90 days after this date.
The fastest way to see the graph half of this comparison is on a repository you actually maintain. Start a free trial and ask your agent a real question about a symbol you own, or book a 15-minute demo to see it on your codebase first.