Roam Code
Free, open-source MCP server and CLI that gives your coding agent a queryable local code graph before it edits.
Worth installing today if you run an agent against a real repository — the free local index and static checks cost you nothing and stop your agent from rediscovering the same call graph on every prompt. Treat the output as leads, not verdicts: Roam's own homepage says static analysis can miss connections and that a high relative risk score is not a production-risk measurement. If you want a human read on past changes, PR Replay is a one-off engagement at $2,500 (Team, 30 PRs) or $6,000 (Deep, 90 PRs), not a subscription. If you're waiting for hosted per-PR checking, Roam Review ($99–$1,499/mo proposed) and Roam Cloud ($19/repo/mo proposed) are explicitly 'not available to subscribe to' with
Verified 4d ago · liveness 72/100 · cite: rightaichoice.com/tools/roam-code
- Engineering teams running MCP-aware coding agents on repositories big enough that dependency questions recur
- Platform teams that want structural checks before merge alongside linters, tests, and security scans
- Compliance-conscious orgs needing tamper-evident in-toto v1 trails and SARIF export for AI-assisted changes
- Developers who want local codebase intelligence with a documented network boundary and no account
- Teams shopping for a semantic code reviewer that reads intent and proposes fixes — Roam returns structural leads, not
- Buyers expecting to purchase hosted Roam Review or Roam Cloud now; both are labeled planned with proposed pricing only
- Non-technical stakeholders with no CLI or MCP client to work through
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Skip Roam Code if you want a hosted per-PR reviewer that reads intent and comments on your diffs today — Roam Review is a planned product not available to subscribe to, and Roam's structural checks return leads, not verdicts.
Roam's static checks are free and local, but your agent's model usage to read and act on the returned results is billed separately by your model provider.
The core product is $0 — Apache 2.0 CLI and MCP server, no account needed for local analysis — which undercuts every paid AI code reviewer on the market. The only paid surface today is PR Replay, a one-off engagement at $2,500 (30 PRs) or $6,000 (90 PRs), which is priced like a consultancy deliverable rather than SaaS.
In short
Roam Code — Free, open-source MCP server and CLI that gives your coding agent a queryable local code graph before it edits. Best for Engineering teams running MCP-aware coding agents on repositories big enough that dependency questions recur, Platform teams that want structural checks before merge alongside linters, tests, and security scans, Compliance-conscious orgs needing tamper-evident in-toto v1 trails and SARIF export for AI-assisted changes. Free to start; paid plans from $19/mo.
What's new in Roam Code
Checked 4 days agoAcross the latest 3 updates: 3 changelog entries.
v14.0.4: Fixed Proof schema in installed packages
Ships the public AgentChangeProofBundle JSON Schema in both the wheel and source archive, decodes it as UTF-8, and adds installed-wheel resource checks.
v14.0.3: Added proof producer boundaries and stricter validation
Shares strict JSON and evidence-shape checks with the saved-file reader, refuses malformed inputs, and preserves review obligations in composition.
v14.0.2: Added explicit cold-start control and fixed index store
Sets ROAM_NO_AUTO_INDEX=1 to refuse implicit index builds, and ROAM_DB_DIR now places the database, ownership lock, and recovery marker together.
Viability Score
How well maintained and how widely used is Roam Code? Built from what the vendor actually publishes (docs, changelog, tutorials, integrations, pricing), whether the site is live, and how much real users discuss it. How we calculate this
Last calculated: October 2026
How we score →Key Features
- Local code-graph index your agent queries through MCP or the CLI
- 28-language parsing with cross-language bridges
- 17-tool default MCP preset with broader presets for focused work
- 287 CLI commands covering exploration, health, security, and governance
- Task compiler classifies prompts into intent procedures with zero model calls
- roam impact traces indexed callers of a symbol before a rename or edit
- roam complexity ranks functions by difficult control flow
- roam algo pairs detected patterns with alternatives from Roam's algorithm catalog
- roam critique inspects a patch's connections and similar code needing the same fix
- AST-level clone detection with identifier-rename confidence
- Blast-radius analysis with production traffic weighting
- Algorithmic risk checks for O(n²), N+1, regex-in-loop, and JSON-parse-in-loop
- Pre-change gates with BLOCK/REVIEW verdicts
- Tamper-evident audit trail (in-toto v1) with HMAC-linked receipts
- SARIF export for GitHub Code Scanning
About Roam Code
Roam Code is a free, Apache 2.0 CLI and MCP server that compiles a repository into a local code index your coding agent can query. Instead of re-deriving structure on every prompt, your agent asks Roam structured questions — who calls this function, what a rename would touch, which patterns repeat — and gets back source locations, findings, and candidate alternatives. It parses 28 languages with cross-language bridges and ships 287 CLI commands behind a default MCP preset of 17 tools, with broader presets for focused work like algorithm review. The static checks run on local compute with no model calls and no account, and the index is reused across questions until you refresh it with `roam index` after code changes. Typical entry points are `roam understand` for repository orientation, `roam complexity` to surface hard control flow, `roam algo` to pair a detected pattern with alternatives from Roam's algorithm catalog, and `roam critique` to look past a patch at similar code that may need the same fix. A task compiler classifies prompts into intent procedures deterministically and pre-executes matching probes. For governance, Roam emits tamper-evident audit trails in in-toto v1 and exports SARIF for GitHub Code Scanning, and local analysis has a documented network boundary. The paid surface is thin: PR Replay reports at $2,500 (Team, 30 PRs) or $6,000 (Deep, 90 PRs plus remediation plan) as one-off engagements, while Roam Review and Roam Cloud are labeled planned products not available to subscribe to.
Behind the Verdict
Roam Code takes an unusual position: it is not a reviewer. Semantic tools like CodeRabbit and Greptile read a diff and tell you whether the change looks right; Roam instead gives your agent a reusable structural map and a set of deterministic checks it can run itself, on local compute, with no model calls and no account. That matters because the expensive part of agentic coding is often rediscovery — the agent re-deriving the call graph on every prompt. Roam's pitch is that you build that graph once (`roam index`), query it cheaply, and let the model reason about the returned locations rather than rebuilding the analysis. Strengths. The mechanism is inspectable. `roam impact calculate_total` returns indexed callers with file paths and symbol kinds, and the JSON includes `cap_applied`, `partial_success`, and `truncated` flags so you can see what the traversal did and did not cover. `roam complexity` ranks functions by difficult control flow; `roam algo` pairs a detected pattern with suggested alternatives and explicitly warns that a candidate is 'not an automatic rewrite or a guaranteed speedup'; `roam critique` looks past the patch for similar code that may need the same fix. For compliance-minded teams, Roam emits tamper-evident in-toto v1 audit trails and exports SARIF for GitHub Code Scanning, and its documented network boundary means repository contents and telemetry are not uploaded automatically. The breadth is real — 28 languages with cross-language bridges, 287 CLI commands, a 17-tool default MCP preset. Weaknesses. Everything the tool returns is a lead, and the vendor says so repeatedly. Static indexed traversal misses runtime connections; a suggested test list is not coverage; a high relative risk score is not a production measurement. The index is a snapshot: refresh with `roam index` after code changes or answers go stale, and if nobody owns re-indexing, the value decays. Setup is manual in the sense that connecting the MCP server alone does not make the checks run — you have to put them into the agent's project instructions. And there is no hosted product to buy: Roam Review and Roam Cloud are labeled planned, with the hosted GitHub App, installation flow, dashboard, and billing explicitly not built. That means no per-PR check today and no shared metrics dashboard. Where it fits. Engineering teams already running Claude Code, Cursor, Codex CLI, Gemini CLI, Amp, VS Code, or Windsurf against repositories large enough that dependency questions recur. Platform teams that want structural checks sitting before merge alongside linters, tests, and security scans. Teams weighing a one-off PR Replay report to get a ranked structural read on 30 or 90 past PRs before committing to a hosted tool. Where it doesn't. Anyone shopping for a semantic reviewer that reads intent and proposes fixes — that is CodeRabbit and Greptile territory, and Roam returns structural leads, not opinions. Buyers who need hosted PR checking now. Non-technical
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Real-world workflow fit
Concrete scenarios for the personas Roam Code actually fits — and what changes day-one when you adopt it.
The agent proposes renaming a shared pricing helper. Before it edits, you run `roam impact calculate_total` and get back the indexed callers — place_order, preview_order, apply_discount — with file paths and symbol kinds, plus the JSON flags showing whether the traversal was truncated or capped.
Outcome: The agent inspects each caller instead of only the edited file, so the rename lands with the affected call sites updated in the same pass rather than breaking checkout later.
You add Roam's static checks to the agent's project instructions and run `roam critique` on incoming patches to look for cloned code that may need the same fix, plus algorithmic risk checks for O(n²) loops and N+1 queries on hot paths.
Outcome: Structural findings land before merge alongside linters and security scans, and the pre-change gate returns BLOCK/REVIEW verdicts the team can act on. Findings are treated as leads to investigate, not merge permission.
You run Roam locally so repository contents stay on your machine, then export the tamper-evident in-toto v1 audit trail and SARIF output to GitHub Code Scanning for the record.
Outcome: You get tamper-evident evidence of AI-assisted code changes without uploading the repo, while keeping the documented network boundary — with the explicit caveat that Roam does not certify compliance with any framework.
Use Cases
- Catch accidental destructive changes, such as a DELETE without a LIMIT, before an AI-generated patch merges.
- Identify forgotten clone updates when an agent fixes a pattern in only one location.
- Review runtime-hot paths for structural changes that could affect production traffic.
- Generate tamper-evident in-toto v1 audit evidence for AI-assisted code changes.
- Run algorithmic risk review on diffs to surface O(n²) loops, N+1 queries, and regex-in-loop patterns.
- Use `roam ask` to get a blast-radius report before renaming a field or symbol.
- Verify a feature is fully wired end-to-end with `roam ask is-feature-wired`.
- Get suggested reviewers for a diff with `roam blame-reviewers` based on git blame lines.
Limitations
- Roam Code is a free, open-source (Apache 2.0) local CLI and MCP server for coding agents; static checks run on local compute with no model calls, so your agent's own model usage — including reading results — is separate.
- Results are leads to investigate, not proof: static analysis can miss connections, algorithm findings are not proof of a bug or a useful optimization, and a suggested test list is not test coverage.
- A connected agent may send Roam results to its model provider, and package and parser downloads need network access.
- Roam does not certify compliance with any framework.
- Answers go stale after code changes until you refresh with `roam index`.
- Paid offerings today are limited to PR Replay reports ($2,500 Team / $6,000 Deep, one engagement); Roam Review and Roam Cloud are planned products not available to subscribe to, with no confirmed launch date.
as of 2026-10-05
Verification history
We have re-verified Roam Code 9 times since . Each pass re-reads the vendor's own pages and re-checks every listed field against that evidence; passes where nothing had changed are marked as such.
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
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Free to cite with attribution — this page re-verifies continuously.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Plans compared
For each published Roam Code tier: who it actually fits, and what it adds vs. the previous tier. Cross-reference the cost calculator above for projected annual outlay.
Free
$0/mo
Ideal for
Individual developers and teams already running an MCP-aware coding agent who want local codebase context with no account and no per-seat cost.
What this tier adds
Starting tier: the CLI and MCP server are free under Apache 2.0, with local static checks, 28-language indexing, and 287 CLI commands at no charge.
PR Replay Team
$2,500 one engagement
Ideal for
A team that wants a human-written structural read on an agreed history of up to 30 recent PRs, with a founder walk-through, before investing in hosted tooling.
What this tier adds
A one-off paid engagement at $2,500 — not a subscription — covering 30 PRs with ranked structural findings, key patterns, and a walk-through; adds a written report over the free tools.
PR Replay Deep
$6,000 one engagement
Ideal for
Teams with a larger change history who want the same structural review across 90 PRs plus a written remediation plan they can act on.
What this tier adds
Extends PR Replay Team from 30 to 90 PRs at $6,000 one engagement, and adds a remediation plan alongside the owner walk-through.
Roam Review Starter (planned, not available to subscribe)
$99/mo
Ideal for
Small teams wanting a proposed hosted PR check alongside an existing reviewer — 3 repositories, 5 active PR authors, 100 reviews per month.
What this tier adds
Proposed hosted entry point at $99/mo with a 14-day trial and free Review for public open-source repos planned; the hosted GitHub App, installation flow, and billing are not built.
Roam Review Team (planned, not available to subscribe)
$299/mo
Ideal for
Growing engineering orgs that need more repositories and authors than Starter allows — 20 repositories, 30 active PR authors, 900 reviews per month.
What this tier adds
Proposed at $299/mo with monthly or annual billing planned and no automatic overage charges — reviews pause at the cap rather than billing you.
Roam Review Business (planned, not available to subscribe)
$799/mo
Ideal for
Larger teams with broad repo coverage needs — 100 repositories, 100 active PR authors, 3,000 reviews per month — who want usage warnings before a hard stop.
What this tier adds
Proposed at $799/mo, adding admin notification at 80% of the usage limit and a dashboard notice at 100%; annual billing is available alongside monthly.
Roam Review Scale (planned, not available to subscribe)
$1,499/mo (annual negotiated)
Ideal for
Enterprises running PR checks across a wide repo estate — 250 repositories, 8,000 reviews per month — with custom quotes above 300 active authors.
What this tier adds
Proposed at $1,499/mo billed annually only, with renewal increases capped at 15% unless the cap is exceeded two consecutive months.
Roam Cloud (planned, not available to subscribe)
$19/repo/mo Starter
Ideal for
Teams that want a shared view of codebase measurements over time rather than only local one-off queries — proposed at $19/repo/mo Starter, $99/mo Team for 10 repos, $299/mo Growth.
What this tier adds
Proposed hosted metrics tier, separate from PR checks; only the local metrics-export command exists today, and the dashboard and team accounts are not built.
Where the pricing makes sense
The company stage and team size where Roam Code's pricing actually pencils out — and where peers do it cheaper.
The core product is $0 — Apache 2.0 CLI and MCP server, no account needed for local analysis — which undercuts every paid AI code reviewer on the market. The only paid surface today is PR Replay, a one-off engagement at $2,500 (30 PRs) or $6,000 (90 PRs), which is priced like a consultancy deliverable rather than SaaS.
Setup time & first value
How long it actually takes to get something useful out of Roam Code — broken out by persona, not the marketing-page minute.
For an individual developer: install the CLI, run `roam index`, and connect the MCP server to Claude Code, Cursor, Codex CLI, Gemini CLI, Amp, VS Code, or Windsurf — the docs say setup time varies by project size. First value comes when your agent asks its first structural question. For a platform team: allow extra time to add the checks to the agent's project instructions, since connecting the
Switching to or from Roam Code
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- →From ad-hoc grep and manual call-graph tracing: run `roam index` once, then use `roam understand` for orientation and `roam impact <symbol>` for dependency questions instead of searching by hand.
- →From a semantic PR reviewer such as CodeRabbit or Greptile: keep the reviewer for intent, and add Roam for structural leads — callers, clones, complexity, and algorithmic risk — since the two answer different questions.
- →From a stale local index: refresh with `roam index` after code changes; `ROAM_NO_AUTO_INDEX=1` refuses implicit index builds if you want indexing to stay an explicit step.
- ↗To a hosted per-PR reviewer still in planning: no migration path exists yet — Roam Review's hosted GitHub App, installation flow, and billing are not built.
- ↗To a shared metrics dashboard over time: Roam Cloud's hosted ingestion service, dashboard, and team accounts are not built; only the local metrics-export command exists.
- ↗To a semantic reviewer for intent-level feedback: you would give up Roam's structural leads, local-only analysis, and in-toto v1 audit trails.
Integrations
Resources & Guides
- Documentationroam-code.com
Docs · Roam Code
Full product docs from roam-code.com
- Documentationroam-code.com
Command Reference · Roam Code
Full product docs from roam-code.com
- Documentationroam-code.com
Architecture · Roam Code
Full product docs from roam-code.com
- Documentationroam-code.com
Agent Contract · Roam Code
Full product docs from roam-code.com
- Documentationroam-code.com
Troubleshooting · Roam Code
Full product docs from roam-code.com
Tutorials & Learning
YouTube returned 6 videos for “Roam Code”, and we withheld 5: 5 did not mention Roam Code. Showing the 1 we can prove is about Roam Code.
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Featured Head-to-Head Comparisons
Roam Code vs Spider Cloud
Spider Cloud is for AI agents that need fresh web data; Roam Code is for AI coding agents that need local code structure. They are complementary rather than competing. Choose Spider Cloud if your bottleneck is external data retrieval; choose Roam Code if your bottleneck is codebase understanding and safe AI edits. Both are freemium and actively developed.
Roam Code vs Voyage Ai
Pick Voyage AI if you need high-fidelity embeddings/rerankers for domain-specific RAG (finance, legal) and have budget for enterprise pricing. Pick Roam Code if you run AI coding agents on real repos and need structural pre-merge gates, blast-radius analysis, and tamper-evident audit trails — all free locally with no data egress. They solve orthogonal problems; your choice depends on whether your bottleneck is retrieval accuracy or code-change safety.
Roam Code vs Temporal Ai
If you need durable execution for AI agents or multi-step workflows that survive crashes and retries, Temporal AI is the clear winner. If your pain point is AI-generated code breaking your repo – structural bugs, clone inconsistencies, or blast radius surprises – Roam Code gives you local, zero-egress pre-merge gates that semantic reviewers miss. Choose based on where your risk lies: runtime reliability or code integrity.
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