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Rank #10 of 13 in AI Coding Agents

cubic logo

cubic

YC X25 Built-in AI assistant

MRGE, Inc. · commercial

cubic.dev ↗Try it →
PA Score27/100AGENT-READY36/100BUILT-IN AI65/100API0/100
MCP✓CLI✓API~
npm 1.4k/wk
ArenasAI Coding Agents#10/13AI Code Review#3/6

Access

Open app ↗API docs ↗CLI docs ↗MCP docs ↗

Install

installercurl -fsSL https://cubic.dev/install | bash

Vendor-official, but review any script before piping it to a shell.

npmnpx @cubic-dev-ai/cli install -g

Compare head-to-head

Codex logovs CodexClaude Code logovs Claude CodeCursor logovs CursorGitHub Copilot logovs GitHub CopilotGemini CLI logovs Gemini CLIOpenCode logovs OpenCodeDevin logovs Devinvs AiderCline logovs ClineGoogle Antigravity logovs Google AntigravitySlate logovs SlateConductor logovs Conductor

Alternatives to cubic →

Showcase

cubic homepage screenshot
homepage · captured Sep 2026 · view live ↗
cubic docs screenshot
docs · captured Sep 2026 · view live ↗

Try itExperimental

See what an agent can do with cubic before you ever sign up. Pick a story: recorded sessions replay real probe-harness transcripts; commands tagged live-capable can re-run against the real endpoint from our edge, right now (▶ run live — the exact same request, live and recorded lines always labeled); sandboxed self-drive sessions are designed and gated (docs/TRY-IT.md).

$curl -s https://docs.cubic.dev/llms.txt | head -6recorded session — replayed, not live
recorded 2026-09-10 · exit 0 · captured verbatim by our probe harness, secrets redacted · pure-HTTP probe — ▶ run live re-runs it from our edge

Verified integrations

No integration evidence found in our corpus for this product yet — that means none was found, never that it doesn’t integrate.

By theme — the product's score on each story themeBy theme

Agenticness — how well agents can access and operate the productAgenticnessevidence →

How well agents can access and operate the product

37.3/100

Automation depth — how much of the product can run unattendedAutomation depthevidence →

How much of the product can run unattended

25.5/100

Autonomy agents — stories about autonomy agents in this arenaAutonomy agentsevidence →

Stories about autonomy agents in this arena

12.0/100

Code generation — quality of generated code — correctness, style, fit to the codebaseCode generationevidence →

Quality of generated code — correctness, style, fit to the codebase

22.5/100

Codebase understanding — how deeply the tool maps your repo — cross-file context, architecture awareness, historyCodebase understandingevidence →

How deeply the tool maps your repo — cross-file context, architecture awareness, history

30.0/100

Ecosystem — integrations, plugins, and third-party ecosystem storiesEcosystemevidence →

Integrations, plugins, and third-party ecosystem stories

17.3/100

Ide terminal integration — meeting you in the IDE and terminal — extensions, inline flows, contextIde terminal integrationevidence →

Meeting you in the IDE and terminal — extensions, inline flows, context

25.1/100

Openness — open source, data portability, and self-hosting storiesOpennessevidence →

Open source, data portability, and self-hosting stories

12.0/100

Pricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limitsevidence →

Free-tier ceilings, usage caps, and rate limits before you have to pay

13.2/100

Privacy posture — data-handling and privacy storiesPrivacy postureevidence →

Data-handling and privacy stories

0.0/100

Review safety — keeping generated changes safe — diffs, approvals, guardrailsReview safetyevidence →

Keeping generated changes safe — diffs, approvals, guardrails

33.6/100

Story verdicts — every judged story with its evidenceStory verdicts

What’s free: 0 free · 1 paid · 0 enterprise · 35 not stated in evidence

?

Sorted by importance (agentic first) (high → low) · 74/74 stories · click a row’s chevron for the rationale and evidence

Connect an agent via an official MCP server G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness3full8/10T

Delegate tasks to a built-in AI assistant inside the product G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness3full7/10C

Drive the product through a documented public API G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness3partial6/10T

Plug MCP servers into this product so it can use their tools G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness3none0/10

Point an agent at llms.txt or agent-oriented docs G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2full9/10T

Set up automations that run autonomously in the background G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness2full8/10C

Use an official CLI G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2full8/10T

Operate the product with natural-language commands G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness2full7/10C

Get AI-generated insights and suggestions from my data inside the product G

Agentic features

ai-native userAgenticness — how well agents can access and operate the productAgenticness2partial6/10X

Run the product headlessly / in CI for automation G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2partial6/10T

Build against official SDKs G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Download a machine-readable API spec (OpenAPI or equivalent) G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Explore an interactive API reference with runnable examples G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Issue scoped/least-privilege API credentials for an agent G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Rely on versioned APIs with a documented deprecation policy G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness2none0/10

Subscribe to events via webhooks G

Agent access

ai-native userAgenticness — how well agents can access and operate the productAgenticness2noneuntestednone yet

Test against a sandbox environment without touching production data G

Api quality

ai-native userAgenticness — how well agents can access and operate the productAgenticness1n/auntestednone yet

Inspect diffs and run checks to catch problems before merging C

Pr review

developerReview safety — keeping generated changes safe — diffs, approvals, guardrailsReview safety3full8/10X

Add a project instructions file to set coding standards and conventions the agent follows C

Context management

developerCodebase understanding — how deeply the tool maps your repo — cross-file context, architecture awareness, historyCodebase understanding3partial6/10C

Define rules that trigger actions automatically on events G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth3partial6/10C

Get automatic code review with contextual feedback on every pull request C

Pr review

developerReview safety — keeping generated changes safe — diffs, approvals, guardrailsReview safety3partial6/10X

Have the agent map and explain an entire unfamiliar codebase without manually selecting context files C

Codebase mapping

developerCodebase understanding — how deeply the tool maps your repo — cross-file context, architecture awareness, historyCodebase understanding3partial6/10C

Understand how a codebase fits together to find where to start making changes C

Codebase mapping

developerCodebase understanding — how deeply the tool maps your repo — cross-file context, architecture awareness, historyCodebase understanding3partial6/10C

Chat with the coding assistant directly inside my IDE for contextual help C

Ide integration

developerIde terminal integration — meeting you in the IDE and terminal — extensions, inline flows, contextIde terminal integration3partial5/10C

Run a coding agent locally from my terminal C

Terminal workflow

developerIde terminal integration — meeting you in the IDE and terminal — extensions, inline flows, contextIde terminal integration3partial5/10T

Export all of my data in open formats and leave G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness3partial4/10C

Have the agent stage changes, write commit messages, create branches, and open pull requests C

Pr review

developerReview safety — keeping generated changes safe — diffs, approvals, guardrailsReview safety3partial4/10C

Reproduce issues, narrow down root causes, and verify fixes C

Issue diagnosis

developerCodebase understanding — how deeply the tool maps your repo — cross-file context, architecture awareness, historyCodebase understanding3partial4/10C

Describe a feature or bug in plain language and have the agent implement or fix it across multiple files C

Feature implementation

developerCode generation — quality of generated code — correctness, style, fit to the codebaseCode generation3partial3/10C

Have the agent write tests, fix lint errors, resolve merge conflicts, and update dependencies for me C

Maintenance automation

developerCode generation — quality of generated code — correctness, style, fit to the codebaseCode generation3partial3/10C

Connect the agent to workflow tools like Jira, Slack, and Google Drive to extend its context C

Tool integration

developerEcosystem — integrations, plugins, and third-party ecosystem storiesEcosystem3none0/10

Delegate longer-running coding tasks to run in the background in an isolated cloud environment C

Background execution

developerAutonomy agents — stories about autonomy agents in this arenaAutonomy agents3n/a0/10

Self-host the core product G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness3none0/10

Turn a tracked issue into a complete pull request end-to-end C

Feature implementation

developerCode generation — quality of generated code — correctness, style, fit to the codebaseCode generation3n/a0/10

Prevent my data from being used to train AI models G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture3noneuntestednone yet

Receive inline code completions and next-edit suggestions as I type C

Code completion

developerCode generation — quality of generated code — correctness, style, fit to the codebaseCode generation3n/auntestednone yet

Get contextual explanations and automatic fixes for security vulnerabilities C

Security checks

developerReview safety — keeping generated changes safe — diffs, approvals, guardrailsReview safety2partial7/10X

Debug issues and troubleshoot using natural-language queries C

Debugging

developerCode generation — quality of generated code — correctness, style, fit to the codebaseCode generation2partial6/10X

Perform bulk operations across many items at once G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth2partialpaid6/10C

Set up always-on agents that run on schedules or triggers to maintain and fix my software autonomously C

Scheduled automation

ai-native userAutonomy agents — stories about autonomy agents in this arenaAutonomy agents2partial6/10C

Sign in with my existing product subscription plan to use the coding agent C

Authentication

developerPricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limits2partial6/10C

Choose which underlying AI model powers my session from multiple providers C

Model choice

developerPricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limits2partial5/10C

Run the agent non-interactively in scripts for workflow automation C

Terminal workflow

developerIde terminal integration — meeting you in the IDE and terminal — extensions, inline flows, contextIde terminal integration2partial5/10T

Do everything through the API that I can do in the UI G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness2partial4/10T

Include multiple project directories in a single session for broader context C

Context management

developerCodebase understanding — how deeply the tool maps your repo — cross-file context, architecture awareness, historyCodebase understanding2partial4/10C

Kick off agent tasks directly from GitHub, GitLab, Linear, or Slack C

Tool integration

developerEcosystem — integrations, plugins, and third-party ecosystem storiesEcosystem2partial4/10X

Have the agent build and recall memory automatically across sessions C

Context management

developerCodebase understanding — how deeply the tool maps your repo — cross-file context, architecture awareness, historyCodebase understanding2partial3/10C

Start a task on one device and continue it later from another device or browser C

Cross device continuity

developerIde terminal integration — meeting you in the IDE and terminal — extensions, inline flows, contextIde terminal integration2partial3/10C

Authenticate through an enterprise identity or cloud platform for compliance and scalability G

Authentication

engineering-leadPricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limits2none0/10

Authenticate with an API key instead of an account login G

Authentication

developerPricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limits2none0/10

Control which external tools and integrations the agent is allowed to access C

Safe execution

engineering-leadReview safety — keeping generated changes safe — diffs, approvals, guardrailsReview safety2none0/10

Have a cloud agent build, test, and demo a feature end-to-end for my review C

Background execution

ai-native userAutonomy agents — stories about autonomy agents in this arenaAutonomy agents2none0/10

Launch fleets of autonomous agents that work in parallel on different tasks for hours or days C

Parallel agents

ai-native userAutonomy agents — stories about autonomy agents in this arenaAutonomy agents2none0/10

Choose where my data is stored (region/residency) G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture2noneuntestednone yet

Configure a reproducible cloud environment with the dependencies and setup steps my repository needs C

Background execution

developerAutonomy agents — stories about autonomy agents in this arenaAutonomy agents2n/auntestednone yet

Control data retention and deletion G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture2noneuntestednone yet

Generate a working app from a sketch, image, or PDF design C

Multimodal generation

ai-native userCode generation — quality of generated code — correctness, style, fit to the codebaseCode generation2n/auntestednone yet

Have the agent operate inside a sandbox when interacting with code, tools, and network resources C

Safe execution

engineering-leadReview safety — keeping generated changes safe — diffs, approvals, guardrailsReview safety2n/auntestednone yet

Manage multiple agent-driven coding sessions from one unified workspace C

Session management

engineering-leadIde terminal integration — meeting you in the IDE and terminal — extensions, inline flows, contextIde terminal integration2n/auntestednone yet

Opt out of telemetry and usage tracking G

ai-native userPrivacy posture — data-handling and privacy storiesPrivacy posture2noneuntestednone yet

Read the product's source under an open license G

ai-native userOpenness — open source, data portability, and self-hosting storiesOpenness2noneuntestednone yet

Review diffs visually and run multiple sessions side by side in a desktop app C

Session management

developerIde terminal integration — meeting you in the IDE and terminal — extensions, inline flows, contextIde terminal integration2n/auntestednone yet

Schedule recurring jobs or workflows G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth2noneuntestednone yet

Integrate third-party partner-built agent apps into my workflows C

Marketplace

engineering-leadEcosystem — integrations, plugins, and third-party ecosystem storiesEcosystem1partial6/10T

Create a shared workspace from my docs and repos as a common source of truth for the team C

Team knowledge

engineering-leadEcosystem — integrations, plugins, and third-party ecosystem storiesEcosystem1partial5/10C

Equip the agent with custom skills to perform specialized tasks C

Marketplace

developerEcosystem — integrations, plugins, and third-party ecosystem storiesEcosystem1partial4/10C

Version, review, and roll back my automations G

ai-native userAutomation depth — how much of the product can run unattendedAutomation depth1partial4/10C

Let the tool automatically pick the best model for each task C

Model choice

developerPricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limits1none0/10

View interactive diffs and share selected code as context from within my JetBrains IDE C

Ide integration

developerIde terminal integration — meeting you in the IDE and terminal — extensions, inline flows, contextIde terminal integration1none0/10

Debug a live running web application directly from my coding assistant C

Debugging

developerCode generation — quality of generated code — correctness, style, fit to the codebaseCode generation1n/auntestednone yet

Opt out of having my code and prompts used for AI model training C

Data governance

engineering-leadReview safety — keeping generated changes safe — diffs, approvals, guardrailsReview safety1noneuntestednone yet

Run several task attempts in parallel and compare results before choosing one C

Parallel agents

developerAutonomy agents — stories about autonomy agents in this arenaAutonomy agents1n/auntestednone yet

See license and public-code matching references for AI-suggested code C

Security checks

engineering-leadReview safety — keeping generated changes safe — diffs, approvals, guardrailsReview safety1noneuntestednone yet

Sign in with a personal account to get free-tier access without managing API keys G

Authentication

developerPricing limits — free-tier ceilings, usage caps, and rate limits before you have to payPricing limits1noneuntestednone yet

Opportunities — the stories that would move this product's scores, from its own judged verdictsOpportunitiestop 8 of 56 stories with headroom

What would move cubic’s scores — derived from its own judged verdicts, biggest headroom first. Each line quotes what the judge found missing; shipping it (or evidencing it publicly) is the fix.

  1. Agenticness — how well agents can access and operate the productPlug MCP servers into this product so it can use their tools

    nonemoves agent-readyimpact 45

    All MCP-related evidence describes cubic acting as an MCP *server* that other coding agents/clients connect to (cubic-docs-15, cubic-docs-3, cubic-probe-3) — the reverse of this story, which asks whether a user can plug external MCP servers into cubic so it can consume their tools.

  2. Ecosystem — integrations, plugins, and third-party ecosystem storiesConnect the agent to workflow tools like Jira, Slack, and Google Drive to extend its context

    nonemoves PA Scoreimpact 30

    cubic's documented integrations are limited to GitHub, an MCP server for coding agents, and ChatGPT/Claude Code subscriptions for local reviews; there is no evidence of connectors to Jira, Slack, or Google Drive for extending context.

  3. Openness — open source, data portability, and self-hosting storiesSelf-host the core product

    nonemoves PA Scoreimpact 30

    cubic is presented as a hosted SaaS code review platform (GitHub app, cloud dashboard, analytics, flex capacity billing) with no documentation of a self-hostable core, on-prem deployment, or open-source release.

  4. Privacy posture — data-handling and privacy storiesPrevent my data from being used to train AI models

    nonemoves PA Scoreimpact 30

    No evidence in the pack addresses data usage for AI model training, opt-out policies, or data privacy commitments — cubic's docs focus entirely on code review features with no mention of training data controls.

  5. Agenticness — how well agents can access and operate the productIssue scoped/least-privilege API credentials for an agent

    nonemoves agent-readyimpact 30

    Cubic documents role-based access control for team subscription/settings (cubic-docs-47) and exposes an MCP server, Analytics API, and CLI that agents can connect to, but there is no evidence of issuing scoped or least-privilege API credentials/tokens specifically for an agent's use — no API key scoping, OAuth scope, or agent-specific credential mechanism is documented.

  6. Agenticness — how well agents can access and operate the productBuild against official SDKs

    nonemoves agent-readyimpact 30

    cubic documents an MCP server, CLI, and an Analytics API, but there is no evidence of official language SDKs (e.g., Python/JS client libraries) for building against cubic programmatically; the OpenAPI probe also returned 404s across candidate paths, suggesting no formal SDK/API spec is published.

  7. Agenticness — how well agents can access and operate the productSubscribe to events via webhooks

    nonemoves agent-readyimpact 30

    Missing: any documentation of webhook endpoints, event types, or subscription setup.

  8. Agenticness — how well agents can access and operate the productExplore an interactive API reference with runnable examples

    nonemoves API qualityimpact 30

    cubic documents an Analytics API but the evidence pack shows explicit probe failures for OpenAPI/swagger specs (404s) and no mention of an interactive API reference or runnable examples anywhere in the docs.

Showing the top 8 of 56 — every none/partial verdict in the story verdicts table is headroom.

Think a verdict is wrong? Every verdicts-table row has a Flag link — see the methodology.

Coverage map — which docs area, API section, or community source covers which judged storiesCoverage map14 surfaces · 38 covered stories

Where the cited evidence behind each covered verdict came from — the same citations the verdicts table shows, no extra judging.

AI review docs29 stories

Ide docs20 stories

docs.cubic.dev14 stories

Codebase scan docs8 stories

Wiki docs8 stories

Hacker News6 stories

Changelog docs6 stories

Analytics docs5 stories

Code review platform docs4 stories

Configure docs4 stories

OpenAPI spec2 stories

Account docs2 stories

llms.txt1 story

How to guides docs1 story

Probe proofs — replayable recordings from the probe harnessProbe proofs

Replayable recordings from our probe harness — see the Prove-It protocol to submit one.

$curl -s https://docs.cubic.dev/llms.txt | head -6reproduced
$ curl -s https://docs.cubic.dev/llms.txt | head -6
# cubic documentation

> cubic reviews code on GitHub and in local coding workflows. These docs cover review setup, coding agents, repository context, analytics, and account management. Older stacking and archived platform guides are listed separately below.

## How to use these docs
proves: Point an agent at llms.txt or agent-oriented docsrecorded 2026-09-10
$curl -si -X POST https://www.cubic.dev/api/mcp -H 'Content-Type: application/json' -d '<jsonrpc initialize>'reproduced
$ curl -si -X POST https://www.cubic.dev/api/mcp -H 'Content-Type: application/json' -d '<jsonrpc initialize>'
HTTP/2 401

baggage:

cache-control: public, max-age=0, must-revalidate

content-security-policy: script-src 'self' 'unsafe-inline' blob: https://va.vercel-scripts.com https://eu.i.posthog.com https://*.sentry-cdn.com https://eu-assets.i.posthog.com https://unpkg.com https://*.vercel-insights.com https://app.nango.dev https://events.framer.com https://framer.com https://framerusercontent.com https://mrge-home.framer.website https://*.framer.app https://app.framerstatic.com https://connect.facebook.net https://www.facebook.com https://graph.facebook.com https://ga.jspm.io https://jspm.dev npm: https://vercel.live todesktop-internal: https://edit.framer.com https://www.googletagmanager.com https://googleads.g.doubleclick.net https://*.doubleclick.net https://*.cloudfront.net https://b-code.liadm.com https://app.atlas.so https://files.atlas.so https://cdn.fs.atlas.so https://static.filestackapi.com https://*.liadm.com https://idx.liadm.com https://rp.liadm.com https://snap.licdn.com https://*.linkedin.com https://www.redditstatic.com https://*.reddit.com https://alb.reddit.com https://ads-api.reddit.com; frame-ancestors 'self'; style-src 'self' 'unsafe-inline' https://framerusercontent.com https://mrge-home.framer.website https://eu.posthog.com https://www.googletagmanager.com https://fonts.googleapis.com https://static.filestackapi.com; img-src 'self' data: blob: https: http:; font-src 'self' data: https://framerusercontent.com https://mrge-home.framer.website https://fonts.gstatic.com https://fonts.googleapis.com https://vercel.live https://www.redditstatic.com https://*.reddit.com https://static.filestackapi.com; connect-src 'self' data: http://localhost:27463 http://127.0.0.1:27463 http://localhost:27464 http://127.0.0.1:27464 https://mrge-home.framer.website https://framerusercontent.com https://*.framer.app wss://*.framer.app https://api.framer.com https://events.framer.com https://edit.framer.com https://app.framerstatic.com https://ga.jspm.io https://jspm.dev npm: https://connect.facebook.net https://www.facebook.com https://graph.facebook.com https://eu.i.posthog.com https://eu.posthog.com https://internal-t.posthog.com https://internal-j.posthog.com https://*.posthog.com https://fonts.googleapis.com https://fonts.gstatic.com https://*.supabase.co wss://*.supabase.co https://*.ingest.de.sentry.io wss://api.nango.dev https://www.googletagmanager.com https://*.google-analytics.com https://*.analytics.google.com https://*.googletagmanager.com https://www.googleadservices.com https://www.google.com https://google.com https://*.doubleclick.net https://*.cloudfront.net https://pro.ip-api.com https://a.usbrowserspeed.com https://alocdn.com https://ipgeolocation.abstractapi.com https://app.atlas.so wss://app.atlas.so https://cdn.fs.atlas.so https://*.atlas.so wss://*.atlas.so https://*.filestackapi.com https://cloud.filestackapi.com https://process.filestackapi.com https://upload.filestackapi.com https://www.filestackapi.com https://cdn.filestackcontent.com https://atlas-prod-uploads.s3.amazonaws.com https://*.liadm.com https://idx.liadm.com https://rp.liadm.com https://snap.licdn.com https://*.linkedin.com https://px.ads.linkedin.com https://www.redditstatic.com https://*.reddit.com https://alb.reddit.com https://ads-api.reddit.com; worker-src 'self' blob:; child-src 'self' blob: https://app.nango.dev https://www.youtube.com https://youtube.com https://www.youtube-nocookie.com https://vercel.live https://td.doubleclick.net https://www.googletagmanager.com https://*.liadm.com https://*.atlas.so https://*.filestackapi.com; frame-src 'self' https://app.nango.dev https://www.youtube.com https://youtube.com https://www.youtube-nocookie.com https://vercel.live https://td.doubleclick.net https://www.googletagmanager.com https://framer.com https://framerusercontent.com https://mrge-home.framer.website https://*.framer.app https://*.atlas.so https://*.filestackapi.com https://*.liadm.com

content-type: application/json

date: Thu, 10 Sep 2026 19:14:47 GMT

server: Vercel

strict-transport-security: max-age=63072000

www-authenticate: Bearer resource_metadata="https://www.cubic.dev/.well-known/oauth-protected-resource/api/mcp", scope="openid email profile"

x-frame-options: SAMEORIGIN

x-matched-path: /api/mcp

x-sentry-trace:

x-vercel-cache: MISS

x-vercel-id: sfo1::iad1::fccnk-1789067687237-b3f3e4f2aba0

{"jsonrpc":"2.0","error":{"code":-32000,"message":"Unauthorized: valid MCP authentication required."},"id":null}
proves: Connect an agent via an official MCP serverrecorded 2026-09-10

Claims vs evidence — vendor claims reconciled against independent verdictsClaims vs evidence

6 of 14 testable claims verified · 0 contradicted → integrity 43/100

24 distinct capability claims found in cubic’s own claimed-docs/GitHub materials, reconciled against our judge’s independent verdicts.

6

Verified

8

Unverified

0

Contradicted

24

Undersold

Verified (11)
Unverified (8)
Undersold (24)
Claims outside our story set (5)

Real capability claims found in cubic’s own materials, but no story in this arena’s taxonomy covers them yet — that’s feedback on the taxonomy, not a mark against the product.

  • “Can hide test files from PR diff/file tree to focus review on implementation changes”

    source ↗

  • “Offers an 'ultrareview' mode with more capable models for risky or complex changes”

    source ↗

  • “Supports an org-wide default config repo (cubic-config) applied to repos without their own settings”

    source ↗

  • “Exports the wiki as markdown into the repo and keeps it updated via a rolling PR”

    source ↗

  • “Can set a monthly spend limit and auto-purchase extra review capacity only as needed”

    source ↗
Suggest a story for these →

Business model

subscription-per-seatusage-based

Per-developer plans: Team $40/dev/mo (40k reviewed LOC) and Pro $99/dev/mo (80k LOC, scans, coding-agent fixes); flex capacity adds usage-based reviewed-line pricing.

pricing ↗

Score trend

How this product’s scores have moved as evidence and verdicts are re-derived — a point per change, not per day.

PA Score23 (Sep 10 '26)27 (Sep 16 '26)
Agent-ready36 (Sep 10 '26)36 (Sep 16 '26)

Try Experimental

Run it in the microterminal →

Recorded agent sessions — and a live MCP handshake where the vendor ships one.

Flag

⚑ Flag a verdict

Think a verdict is wrong? Opens a prefilled GitHub issue — or use the ⚑ next to any verdict above.

Badge

Embed this product's score badge →

Hotlinked SVG — always shows the live current score.

For agents

This page as markdown/llms.txt

Data

Evidence (JSON)Verdicts (JSON)

Agent surface uptime MCP up · llms.txt up (tracking since Sep 11 '26)