felvieira/claude-skills-fv
agent-skills via skillsdirectory-com
- Upstream
- github.com/felvieira/claude-skills-fv
- Version
2.37.0
Source details
- Revision
v2.37.0tag- Hash
sha256-cBCAMd/nZ3Uq3o9gm6mz2IEB1GkO6Aw2ZC/M83/DbT8=- Snapshot
- data/agent-skills/github.com/felvieira/claude-skills-fv.json · latest JSON
50 packages
01-po-feature-spec
2.37.0
·
skills/01-po-feature-spec
pkgs.agent-skills.github.felvieira.claude-skills-fv."01-po-feature-spec"
Install with home-manager
programs.claude-code.skills."01-po-feature-spec" = pkgs.agent-skills.github.felvieira.claude-skills-fv."01-po-feature-spec";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."01-po-feature-spec"'
02-ui-ux-design
2.37.0
·
skills/02-ui-ux-design
pkgs.agent-skills.github.felvieira.claude-skills-fv."02-ui-ux-design"
Install with home-manager
programs.claude-code.skills."02-ui-ux-design" = pkgs.agent-skills.github.felvieira.claude-skills-fv."02-ui-ux-design";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."02-ui-ux-design"'
03-backend-api
2.37.0
·
skills/03-backend-api
pkgs.agent-skills.github.felvieira.claude-skills-fv."03-backend-api"
Install with home-manager
programs.claude-code.skills."03-backend-api" = pkgs.agent-skills.github.felvieira.claude-skills-fv."03-backend-api";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."03-backend-api"'
04-frontend-integration
2.37.0
·
skills/04-frontend-integration
pkgs.agent-skills.github.felvieira.claude-skills-fv."04-frontend-integration"
Install with home-manager
programs.claude-code.skills."04-frontend-integration" = pkgs.agent-skills.github.felvieira.claude-skills-fv."04-frontend-integration";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."04-frontend-integration"'
05-qa-testing
2.37.0
·
skills/05-qa-testing
pkgs.agent-skills.github.felvieira.claude-skills-fv."05-qa-testing"
Install with home-manager
programs.claude-code.skills."05-qa-testing" = pkgs.agent-skills.github.felvieira.claude-skills-fv."05-qa-testing";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."05-qa-testing"'
06-security-review
2.37.0
·
skills/06-security-review
pkgs.agent-skills.github.felvieira.claude-skills-fv."06-security-review"
Install with home-manager
programs.claude-code.skills."06-security-review" = pkgs.agent-skills.github.felvieira.claude-skills-fv."06-security-review";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."06-security-review"'
07-deploy-docker
2.37.0
·
skills/07-deploy-docker
pkgs.agent-skills.github.felvieira.claude-skills-fv."07-deploy-docker"
Install with home-manager
programs.claude-code.skills."07-deploy-docker" = pkgs.agent-skills.github.felvieira.claude-skills-fv."07-deploy-docker";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."07-deploy-docker"'
08-context-manager
2.37.0
·
skills/08-context-manager
pkgs.agent-skills.github.felvieira.claude-skills-fv."08-context-manager"
Install with home-manager
programs.claude-code.skills."08-context-manager" = pkgs.agent-skills.github.felvieira.claude-skills-fv."08-context-manager";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."08-context-manager"'
09-orchestrator
2.37.0
·
skills/09-orchestrator
pkgs.agent-skills.github.felvieira.claude-skills-fv."09-orchestrator"
Install with home-manager
programs.claude-code.skills."09-orchestrator" = pkgs.agent-skills.github.felvieira.claude-skills-fv."09-orchestrator";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."09-orchestrator"'
10-documenter
2.37.0
·
skills/10-documenter
pkgs.agent-skills.github.felvieira.claude-skills-fv."10-documenter"
Install with home-manager
programs.claude-code.skills."10-documenter" = pkgs.agent-skills.github.felvieira.claude-skills-fv."10-documenter";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."10-documenter"'
11-reviewer
2.37.0
·
skills/11-reviewer
pkgs.agent-skills.github.felvieira.claude-skills-fv."11-reviewer"
Install with home-manager
programs.claude-code.skills."11-reviewer" = pkgs.agent-skills.github.felvieira.claude-skills-fv."11-reviewer";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."11-reviewer"'
12-motion-design
2.37.0
·
skills/12-motion-design
pkgs.agent-skills.github.felvieira.claude-skills-fv."12-motion-design"
Install with home-manager
programs.claude-code.skills."12-motion-design" = pkgs.agent-skills.github.felvieira.claude-skills-fv."12-motion-design";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."12-motion-design"'
13-marketing-copy
2.37.0
·
skills/13-marketing-copy
pkgs.agent-skills.github.felvieira.claude-skills-fv."13-marketing-copy"
Install with home-manager
programs.claude-code.skills."13-marketing-copy" = pkgs.agent-skills.github.felvieira.claude-skills-fv."13-marketing-copy";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."13-marketing-copy"'
14-seo-specialist
2.37.0
·
skills/14-seo-specialist
pkgs.agent-skills.github.felvieira.claude-skills-fv."14-seo-specialist"
Install with home-manager
programs.claude-code.skills."14-seo-specialist" = pkgs.agent-skills.github.felvieira.claude-skills-fv."14-seo-specialist";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."14-seo-specialist"'
15-mobile-tauri
2.37.0
·
skills/15-mobile-tauri
pkgs.agent-skills.github.felvieira.claude-skills-fv."15-mobile-tauri"
Install with home-manager
programs.claude-code.skills."15-mobile-tauri" = pkgs.agent-skills.github.felvieira.claude-skills-fv."15-mobile-tauri";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."15-mobile-tauri"'
17-image-generator
2.37.0
·
skills/17-image-generator
pkgs.agent-skills.github.felvieira.claude-skills-fv."17-image-generator"
Install with home-manager
programs.claude-code.skills."17-image-generator" = pkgs.agent-skills.github.felvieira.claude-skills-fv."17-image-generator";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."17-image-generator"'
18-repo-auditor
2.37.0
·
skills/18-repo-auditor
pkgs.agent-skills.github.felvieira.claude-skills-fv."18-repo-auditor"
Install with home-manager
programs.claude-code.skills."18-repo-auditor" = pkgs.agent-skills.github.felvieira.claude-skills-fv."18-repo-auditor";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."18-repo-auditor"'
19-asset-librarian
2.37.0
·
skills/19-asset-librarian
pkgs.agent-skills.github.felvieira.claude-skills-fv."19-asset-librarian"
Install with home-manager
programs.claude-code.skills."19-asset-librarian" = pkgs.agent-skills.github.felvieira.claude-skills-fv."19-asset-librarian";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."19-asset-librarian"'
20-observability-sre
2.37.0
·
skills/20-observability-sre
pkgs.agent-skills.github.felvieira.claude-skills-fv."20-observability-sre"
Install with home-manager
programs.claude-code.skills."20-observability-sre" = pkgs.agent-skills.github.felvieira.claude-skills-fv."20-observability-sre";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."20-observability-sre"'
21-data-analytics
2.37.0
·
skills/21-data-analytics
pkgs.agent-skills.github.felvieira.claude-skills-fv."21-data-analytics"
Install with home-manager
programs.claude-code.skills."21-data-analytics" = pkgs.agent-skills.github.felvieira.claude-skills-fv."21-data-analytics";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."21-data-analytics"'
22-accessibility-specialist
2.37.0
·
skills/22-accessibility-specialist
pkgs.agent-skills.github.felvieira.claude-skills-fv."22-accessibility-specialist"
Install with home-manager
programs.claude-code.skills."22-accessibility-specialist" = pkgs.agent-skills.github.felvieira.claude-skills-fv."22-accessibility-specialist";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."22-accessibility-specialist"'
23-migration-refactor-specialist
2.37.0
·
skills/23-migration-refactor-specialist
pkgs.agent-skills.github.felvieira.claude-skills-fv."23-migration-refactor-specialist"
Install with home-manager
programs.claude-code.skills."23-migration-refactor-specialist" = pkgs.agent-skills.github.felvieira.claude-skills-fv."23-migration-refactor-specialist";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."23-migration-refactor-specialist"'
24-release-manager
2.37.0
·
skills/24-release-manager
pkgs.agent-skills.github.felvieira.claude-skills-fv."24-release-manager"
Install with home-manager
programs.claude-code.skills."24-release-manager" = pkgs.agent-skills.github.felvieira.claude-skills-fv."24-release-manager";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."24-release-manager"'
25-ai-integration-architect
2.37.0
·
skills/25-ai-integration-architect
pkgs.agent-skills.github.felvieira.claude-skills-fv."25-ai-integration-architect"
Install with home-manager
programs.claude-code.skills."25-ai-integration-architect" = pkgs.agent-skills.github.felvieira.claude-skills-fv."25-ai-integration-architect";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."25-ai-integration-architect"'
26-prompt-engineer
2.37.0
·
skills/26-prompt-engineer
pkgs.agent-skills.github.felvieira.claude-skills-fv."26-prompt-engineer"
Install with home-manager
programs.claude-code.skills."26-prompt-engineer" = pkgs.agent-skills.github.felvieira.claude-skills-fv."26-prompt-engineer";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."26-prompt-engineer"'
27-video-integration-specialist
2.37.0
·
skills/27-video-integration-specialist
pkgs.agent-skills.github.felvieira.claude-skills-fv."27-video-integration-specialist"
Install with home-manager
programs.claude-code.skills."27-video-integration-specialist" = pkgs.agent-skills.github.felvieira.claude-skills-fv."27-video-integration-specialist";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."27-video-integration-specialist"'
28-claude-md-generator
2.37.0
·
skills/28-claude-md-generator
pkgs.agent-skills.github.felvieira.claude-skills-fv."28-claude-md-generator"
Install with home-manager
programs.claude-code.skills."28-claude-md-generator" = pkgs.agent-skills.github.felvieira.claude-skills-fv."28-claude-md-generator";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."28-claude-md-generator"'
29-design-intelligence
2.37.0
·
skills/29-design-intelligence
pkgs.agent-skills.github.felvieira.claude-skills-fv."29-design-intelligence"
Install with home-manager
programs.claude-code.skills."29-design-intelligence" = pkgs.agent-skills.github.felvieira.claude-skills-fv."29-design-intelligence";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."29-design-intelligence"'
30-cost-tracker
2.37.0
·
skills/30-cost-tracker
pkgs.agent-skills.github.felvieira.claude-skills-fv."30-cost-tracker"
Install with home-manager
programs.claude-code.skills."30-cost-tracker" = pkgs.agent-skills.github.felvieira.claude-skills-fv."30-cost-tracker";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."30-cost-tracker"'
31-session-summary
2.37.0
·
skills/31-session-summary
pkgs.agent-skills.github.felvieira.claude-skills-fv."31-session-summary"
Install with home-manager
programs.claude-code.skills."31-session-summary" = pkgs.agent-skills.github.felvieira.claude-skills-fv."31-session-summary";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."31-session-summary"'
32-smart-suggestions
2.37.0
·
skills/32-smart-suggestions
pkgs.agent-skills.github.felvieira.claude-skills-fv."32-smart-suggestions"
Install with home-manager
programs.claude-code.skills."32-smart-suggestions" = pkgs.agent-skills.github.felvieira.claude-skills-fv."32-smart-suggestions";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."32-smart-suggestions"'
33-detective-spec
2.37.0
·
skills/33-detective-spec
pkgs.agent-skills.github.felvieira.claude-skills-fv."33-detective-spec"
Install with home-manager
programs.claude-code.skills."33-detective-spec" = pkgs.agent-skills.github.felvieira.claude-skills-fv."33-detective-spec";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."33-detective-spec"'
34-static-analysis
2.37.0
·
skills/34-static-analysis
pkgs.agent-skills.github.felvieira.claude-skills-fv."34-static-analysis"
Install with home-manager
programs.claude-code.skills."34-static-analysis" = pkgs.agent-skills.github.felvieira.claude-skills-fv."34-static-analysis";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."34-static-analysis"'
35-skill-author
2.37.0
·
skills/35-skill-author
pkgs.agent-skills.github.felvieira.claude-skills-fv."35-skill-author"
Install with home-manager
programs.claude-code.skills."35-skill-author" = pkgs.agent-skills.github.felvieira.claude-skills-fv."35-skill-author";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."35-skill-author"'
36-web-asset-generator
2.37.0
·
skills/36-web-asset-generator
pkgs.agent-skills.github.felvieira.claude-skills-fv."36-web-asset-generator"
Install with home-manager
programs.claude-code.skills."36-web-asset-generator" = pkgs.agent-skills.github.felvieira.claude-skills-fv."36-web-asset-generator";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."36-web-asset-generator"'
37-tdd-engineer
2.37.0
·
skills/37-tdd-engineer
pkgs.agent-skills.github.felvieira.claude-skills-fv."37-tdd-engineer"
Install with home-manager
programs.claude-code.skills."37-tdd-engineer" = pkgs.agent-skills.github.felvieira.claude-skills-fv."37-tdd-engineer";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."37-tdd-engineer"'
38-architecture-deepener
2.37.0
·
skills/38-architecture-deepener
pkgs.agent-skills.github.felvieira.claude-skills-fv."38-architecture-deepener"
Install with home-manager
programs.claude-code.skills."38-architecture-deepener" = pkgs.agent-skills.github.felvieira.claude-skills-fv."38-architecture-deepener";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."38-architecture-deepener"'
39-program-router
2.37.0
·
skills/39-program-router
pkgs.agent-skills.github.felvieira.claude-skills-fv."39-program-router"
Install with home-manager
programs.claude-code.skills."39-program-router" = pkgs.agent-skills.github.felvieira.claude-skills-fv."39-program-router";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."39-program-router"'
40-parallel-dispatcher
2.37.0
·
skills/40-parallel-dispatcher
pkgs.agent-skills.github.felvieira.claude-skills-fv."40-parallel-dispatcher"
Install with home-manager
programs.claude-code.skills."40-parallel-dispatcher" = pkgs.agent-skills.github.felvieira.claude-skills-fv."40-parallel-dispatcher";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."40-parallel-dispatcher"'
41-blog-publisher
2.37.0
·
skills/41-blog-publisher
pkgs.agent-skills.github.felvieira.claude-skills-fv."41-blog-publisher"
Install with home-manager
programs.claude-code.skills."41-blog-publisher" = pkgs.agent-skills.github.felvieira.claude-skills-fv."41-blog-publisher";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."41-blog-publisher"'
42-blog-screenshot
2.37.0
·
skills/42-blog-screenshot
pkgs.agent-skills.github.felvieira.claude-skills-fv."42-blog-screenshot"
Install with home-manager
programs.claude-code.skills."42-blog-screenshot" = pkgs.agent-skills.github.felvieira.claude-skills-fv."42-blog-screenshot";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."42-blog-screenshot"'
43-canary-deployment
2.37.0
·
skills/43-canary-deployment
pkgs.agent-skills.github.felvieira.claude-skills-fv."43-canary-deployment"
Install with home-manager
programs.claude-code.skills."43-canary-deployment" = pkgs.agent-skills.github.felvieira.claude-skills-fv."43-canary-deployment";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."43-canary-deployment"'
44-zoom-out
2.37.0
·
skills/44-zoom-out
pkgs.agent-skills.github.felvieira.claude-skills-fv."44-zoom-out"
Install with home-manager
programs.claude-code.skills."44-zoom-out" = pkgs.agent-skills.github.felvieira.claude-skills-fv."44-zoom-out";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."44-zoom-out"'
45-handoff-context
2.37.0
·
skills/45-handoff-context
pkgs.agent-skills.github.felvieira.claude-skills-fv."45-handoff-context"
Install with home-manager
programs.claude-code.skills."45-handoff-context" = pkgs.agent-skills.github.felvieira.claude-skills-fv."45-handoff-context";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."45-handoff-context"'
46-post-deploy-canary-monitor
2.37.0
·
skills/46-post-deploy-canary-monitor
pkgs.agent-skills.github.felvieira.claude-skills-fv."46-post-deploy-canary-monitor"
Install with home-manager
programs.claude-code.skills."46-post-deploy-canary-monitor" = pkgs.agent-skills.github.felvieira.claude-skills-fv."46-post-deploy-canary-monitor";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."46-post-deploy-canary-monitor"'
47-pattern-conformity
2.37.0
·
skills/47-pattern-conformity
pkgs.agent-skills.github.felvieira.claude-skills-fv."47-pattern-conformity"
Install with home-manager
programs.claude-code.skills."47-pattern-conformity" = pkgs.agent-skills.github.felvieira.claude-skills-fv."47-pattern-conformity";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."47-pattern-conformity"'
48-research-prep
2.37.0
·
skills/48-research-prep
pkgs.agent-skills.github.felvieira.claude-skills-fv."48-research-prep"
Install with home-manager
programs.claude-code.skills."48-research-prep" = pkgs.agent-skills.github.felvieira.claude-skills-fv."48-research-prep";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."48-research-prep"'
49-context-budget
2.37.0
·
skills/49-context-budget
pkgs.agent-skills.github.felvieira.claude-skills-fv."49-context-budget"
Install with home-manager
programs.claude-code.skills."49-context-budget" = pkgs.agent-skills.github.felvieira.claude-skills-fv."49-context-budget";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."49-context-budget"'
50-direct-response-copy
2.37.0
·
skills/50-direct-response-copy
pkgs.agent-skills.github.felvieira.claude-skills-fv."50-direct-response-copy"
Install with home-manager
programs.claude-code.skills."50-direct-response-copy" = pkgs.agent-skills.github.felvieira.claude-skills-fv."50-direct-response-copy";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."50-direct-response-copy"'
51-ux-research
2.37.0
·
skills/51-ux-research
pkgs.agent-skills.github.felvieira.claude-skills-fv."51-ux-research"
Install with home-manager
programs.claude-code.skills."51-ux-research" = pkgs.agent-skills.github.felvieira.claude-skills-fv."51-ux-research";
Build without the overlay
nix build 'github:sudosubin/agents.nix#agent-skills.aarch64-darwin.github.felvieira.claude-skills-fv."51-ux-research"'
The build command uses aarch64-darwin; aarch64-linux and x86_64-linux work too.
Any agent that reads a skills directory can use these packages; see the usage guide for installation.