Phase 02 · Validate
Validate
The Validate phase is where a small team proves an idea is worth building before building it - scoping, prototyping and spikes, landing-page and waitlist tests, and pricing. Skillselion organizes every AI-coding skill, MCP server and workflow for this phase and highlights the best tool for each de-risking step.
The top-ranked Validate-phase tools for solo builders are grill-me, grill-with-docs, brainstorming.
Ranked shortlists: Best marketplaces · Best MCP servers · Best plugins · Best skills
TypeDescription
1Grill MeDocs & PlanningskillStress-test a plan or design with a one-question-at-a-time interview before you commit to building or shipping.278k121k
2Grill With DocsDocs & PlanningskillStress-test an implementation plan against your repo’s CONTEXT.md, ADRs, and domain language before you commit the agent to coding.218k121k
3BrainstormingDocs & PlanningskillRun structured design dialogue and get explicit approval before your agent writes code or scaffolds anything.209k221k
4To PrdDocs & PlanningskillConvert existing chat and repo understanding into a structured PRD and publish it to the project issue tracker with ready-for-agent labeling.196k121k
5Sleek Design Mobile AppsFrontend & DesignskillDesign mobile app screens and manage Sleek projects via REST API using natural-language prompts and screenshots.182k422
6SimpleDocs & PlanningskillRun a lightweight brainstorm before features, components, or behavior changes until the user approves a direction.175k13
7PrototypeDocs & PlanningskillBuild a small terminal prototype to manually drive state transitions and verify business logic and edge cases before implementing production code.140k121k
8Paper Context ResolverBackend & DataskillResolve narrow paper-backed gaps (splits, preprocessing, eval protocol, checkpoints, runtime) when README and repo files are insufficient for faithful ML paper reproduction.140k412
9Repo Intake And PlanBackend & DataskillScan an ML research repository, extract README commands, and recommend the smallest trustworthy inference or evaluation reproduction target.140k412
10BrandkitFrontend & DesignskillGenerate presentation-ready brand-guideline boards, logo systems, and identity decks as single premium composite images.66k37.9k
11Imagegen Frontend WebFrontend & DesignskillGenerate one horizontal reference image per landing section so you or your coding agent can recreate premium, conversion-aware marketing UI with consistent palette and varied composition.65.1k37.9k
12Imagegen Frontend MobileAI & AgentsskillGenerate premium, readable mobile app screen and flow images (onboarding, dashboards, fintech, etc.) inside phone mockups—images only, no code.63.5k37.9k
13Product Marketing ContextDocs & PlanningskillCreate `.agents/product-marketing-context.md` once so positioning, ICP, and product facts feed every later marketing skill without repeating yourself.61.5k32.4k
14Pricing StrategyDocs & PlanningskillStructure SaaS plans, freemium vs trial, and willingness-to-pay framing before you lock a pricing page or pitch deck.61.5k32.4k
15Page CroDocs & PlanningskillDiagnose why a marketing URL under-converts and get prioritized CRO fixes for hero, proof, CTA, and page structure.57.7k32.4k
16Lead MagnetsDocs & PlanningskillPlan a gated download or template offer that earns emails and naturally tees up your product—not random free PDFs.51.7k32.4k
17Enhance PromptFrontend & DesignskillTurn a rough UI idea into a Stitch-ready prompt with platform, structure, and design-system keywords before you generate screens.42.6k5.9k
18Analyze ProjectBackend & DataskillMap a deep learning repo read-only—training, inference, and eval entrypoints, configs, and suspicious patterns—before you let an agent patch model code.32.3k412
19Env And Assets BootstrapBackend & DataskillBootstrap a conservative conda-first environment and document checkpoint, dataset, and cache assumptions before reproducing a research README target.32.3k412
20Explore RunBackend & DataskillRun authorized exploratory ML variants in isolation, favoring small subsets and short cycles, then surface TOP_RUNS for human review—not auto-promoted baselines.32.3k412
21Design An InterfaceDocs & PlanningskillExplore radically different API or module shapes in parallel before committing to one interface design.31.3k121k
22ShapeFrontend & DesignskillRun a structured UX/UI discovery interview and produce a design brief before any implementation code for a new feature.30.3k35.9k
23Huashu DesignFrontend & DesignskillProduce hi-fidelity HTML prototypes, slide decks, motion demos, and side-by-side design variants without shipping a production web app.27.4k17.4k
24Ckm:BrandFrontend & DesignskillDefine brand voice, tokens, and asset rules so landing pages, marketing copy, and UI stay consistent while a solo builder validates and launches.25.8k88.7k
25Brand LandingpageFrontend & DesignskillRun a structured brand-and-purpose interview before your agent generates a landing page so the page reflects real product positioning instead of a generic template.25.4k36.5k
26Baoyu ComicAI & AgentsskillStructure long-form source material into audience, narrative, and panel-ready beats before an agent drafts a comic.22.2k20.9k
27PrdDocs & PlanningskillTurn a vague product or AI feature idea into a stakeholder-ready PRD with user stories, technical specs, risks, and explicit non-goals after a structured discovery interview.19.1k34.6k
28CroDocs & PlanningskillAudit landing pages, pricing pages, and signup flows so paid traffic converts instead of bouncing at 1–2%.16.2k32.4k
29Product MarketingDocs & PlanningskillCreate and maintain a shared product-marketing context file so every downstream marketing and analytics skill speaks with one voice about audience, differentiation, and proof.16k32.4k
30Recipe Collect Form ResponsesAutomationskillPull and review Google Form submissions via gws so an agent can summarize validation signals without opening the Forms UI.15.4k26.9k
31PricingDocs & PlanningskillStructure SaaS plans, value metrics, and willingness-to-pay before you commit to a pricing page or GTM motion.15.4k32.4k
32SignupDocs & PlanningskillTune trial, freemium, and paid registration flows so more visitors finish account creation.14.5k32.4k
33Security Requirement ExtractionSecurityskillTurn product specs and compliance goals into structured security requirements with domains, priorities, and acceptance criteria before you build.13.6k36.5k
34Firecrawl ShopDocs & PlanningskillCompare products, prices, reviews, and specs across the web with Firecrawl and get a budget-aware recommendation or cart-ready summary when explicitly authorized.11.6k29
35Create SpecificationDocs & PlanningskillAuthor a machine-readable spec in `/spec/` with the copilot naming template so agents implement `${input:SpecPurpose}` without ambiguous requirements.11.5k34.6k
36Firecrawl Demo WalkthroughFrontend & DesignskillDocument a live product’s signup, onboarding, pricing, docs, and dashboard flows with Firecrawl browser snapshots for demos, UX teardowns, or competitive walkthroughs.11.5k29
37Backtesting FrameworksBackend & DataskillPrototype and stress-test trading strategies with event-driven backtests before risking real capital.11.2k36.5k
38Create Implementation PlanDocs & PlanningskillInstall this skill when you need a deterministic, file-based implementation plan for a feature, refactor, package upgrade, or architecture change before agents execute work.10.9k34.6k
39Penpot Uiux DesignFrontend & DesignskillCreate and refine web, mobile, or desktop UI in Penpot via penpot-mcp tools, design systems, and accessibility patterns.10.7k34.6k
40Breakdown Feature PrdDocs & PlanningskillTurn an Epic-level feature idea into a structured PRD your agent and engineers can implement from.9.4k34.6k
41DbsDocs & PlanningskillInstall this as the single entry point that routes your business, content, and decision questions to the right dontbesilent diagnostic skill without mixing analyses.9.2k6.3k
42Ai Paper ReproductionAI & AgentsskillRun a README-first, minimal-trustworthy reproduction of an AI paper repo with auditable `repro_outputs/` and conservative patching.9.1k412
43Boost PromptDocs & PlanningskillRun a structured Q&A to sharpen a task prompt, then copy final markdown to the clipboard—without the agent writing code.9k34.6k
44Dbs DiagnosisDocs & PlanningskillRun dontbesilent-style business model diagnosis in consultation or full checkup mode when a solo builder’s revenue, pricing, or growth question may be the wrong question.8.8k6.3k
45Power Bi Report Design ConsultationBackend & DataskillRun a structured Power BI visualization consultation so KPIs, audience, and chart choices are scoped before you build pages in the service.8.8k34.6k
46Breakdown Epic PmDocs & PlanningskillTurn a vague epic idea into a full Epic PRD markdown file that engineering can feed into a technical architecture spec.8.7k34.6k
47Create Technical SpikeDocs & PlanningskillTime-box a technical research spike with a named markdown file before you commit to an architecture or integration path.8.6k34.6k
48Structured Autonomy PlanDocs & PlanningskillTurn a vague feature request into a commit-scoped development plan saved as markdown before any code lands in a single PR branch.8.6k34.6k
49First AskDocs & PlanningskillClarify scope, deliverables, and constraints with structured human input before your agent starts implementation work.8.5k34.6k
50Gen Specs As IssuesDocs & PlanningskillTurn README promises and placeholder code into prioritized feature gaps and implementation-ready specs as GitHub issues.8.5k34.6k
51Dbs ActionDocs & PlanningskillDiagnose why you keep deferring work you already understand—using a structured Adler-inspired interview instead of motivational pep talks.8.1k6.3k
52Startup Financial ModelingBackend & DataskillBuild cohort-based revenue, cost, and hiring assumptions so you can sanity-check SaaS, marketplace, or transactional economics before committing to build.7.9k36.5k
53Framework SelectionAI & AgentsskillChoose LangChain vs LangGraph vs Deep Agents (or a combo) before writing any agent code on a new LangChain-stack project.7.3k782
54Context Driven DevelopmentDocs & PlanningskillBootstrap Conductor-style context artifacts—product.md and tech-stack.md—from copy-paste templates so agents and humans share one project truth before building.7.2k36.5k
55Zhangxuefeng PerspectiveDocs & PlanningskillRole-play and decision framing as Zhang Xuefeng for education, career, and mobility choices before you commit time or money.7.2k7.6k
56Ppt VisualDocs & PlanningskillInstall this skill when you need slide layout concepts, visual hierarchy, and design specs before building or exporting PowerPoint decks for pitches and updates.7.1k196
57Datanalysis Credit RiskBackend & DataskillRun credit-risk variable selection, PSI stability checks, and LightGBM AUC screening on tabular loan or risk datasets before you ship a scoring model.7k34.6k
58Multi Cloud ArchitectureMonitoring & CloudskillCompare AWS, Azure, GCP, and OCI patterns to scope resilient multi-cloud or primary/DR architecture before you commit spend.6.9k36.5k
59Team Composition AnalysisDocs & PlanningskillModel who to hire, at what salary bands, across pre-seed, seed, and Series A so scope and runway stay realistic.6.7k36.5k
60ThinkDocs & PlanningskillTurn a fuzzy feature or architecture idea into an approved, decision-complete plan your agent can implement without re-litigating tradeoffs.6.6k5.6k
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