{
  "name": "Vellum",
  "slug": "vellum",
  "domain": "https://www.vellum.ai/",
  "sources": [
    "startups_gallery",
    "yc"
  ],
  "branding": {
    "colorScheme": "light",
    "fonts": [
      {
        "family": "DM Sans",
        "role": "body"
      },
      {
        "family": "Inter",
        "role": "body"
      },
      {
        "family": "Instrument Serif",
        "role": "heading"
      }
    ],
    "colors": {
      "primary": "#95A2AD",
      "secondary": "#1264A3",
      "accent": "#216C37",
      "background": "#FFFFFF",
      "textPrimary": "#1A1A1A",
      "link": "#216C37"
    },
    "typography": {
      "fontFamilies": {
        "primary": "DM Sans",
        "heading": "Instrument Serif"
      },
      "fontStacks": {
        "heading": [
          "instrumentSerif",
          "instrumentSerif Fallback",
          "Instrument Serif",
          "serif"
        ],
        "body": [
          "ui-sans-serif",
          "system-ui",
          "sans-serif",
          "Apple Color Emoji",
          "Segoe UI Emoji",
          "Segoe UI Symbol",
          "Noto Color Emoji"
        ],
        "paragraph": [
          "DM Sans",
          "sans-serif"
        ]
      },
      "fontSizes": {
        "h1": "80px",
        "h2": "56px",
        "body": "17px"
      }
    },
    "spacing": {
      "baseUnit": 4,
      "borderRadius": "14px"
    },
    "components": {
      "input": {
        "background": "transparent",
        "textColor": "#1A1A1A",
        "borderColor": null,
        "borderRadius": "0px",
        "borderRadiusCorners": {
          "topLeft": "0px",
          "topRight": "0px",
          "bottomRight": "0px",
          "bottomLeft": "0px"
        },
        "shadow": "none"
      },
      "buttonPrimary": {
        "background": "#111111",
        "textColor": "#FFFFFF",
        "borderRadius": "999px",
        "borderRadiusCorners": {
          "topLeft": "999px",
          "topRight": "999px",
          "bottomRight": "999px",
          "bottomLeft": "999px"
        },
        "shadow": "rgba(0, 0, 0, 0.08) 0px 2px 6px 0px"
      },
      "buttonSecondary": {
        "background": "#FFFFFF",
        "textColor": "#1A1A1A",
        "borderRadius": "100px",
        "borderRadiusCorners": {
          "topLeft": "100px",
          "topRight": "100px",
          "bottomRight": "100px",
          "bottomLeft": "100px"
        },
        "shadow": "none"
      }
    },
    "images": {
      "logo": "https://www.vellum.ai/vellum-logo.svg",
      "favicon": "https://www.vellum.ai/favicon.svg",
      "ogImage": "https://www.vellum.ai/cover-image.jpeg",
      "logoHref": "/",
      "logoAlt": "vellum"
    },
    "__llm_logo_reasoning": {
      "selectedIndex": 2,
      "reasoning": "Selected #2 because it is visible, has a medium size, and matches the brand name 'Vellum'. It is linked to the homepage, making it the primary brand logo.",
      "confidence": 0.95,
      "source": "llm"
    },
    "__llm_button_reasoning": {
      "primary": {
        "index": 0,
        "text": "Download for macOS",
        "reasoning": "Button #0 ('Download for macOS') is likely the primary CTA due to its prominent placement and action-oriented text. It uses a dark background (#111111) which stands out against the light theme, making it a strong candidate for primary action."
      },
      "secondary": {
        "index": 1,
        "text": "DOWNLOAD",
        "reasoning": "Button #1 ('DOWNLOAD') is selected as the secondary CTA. It has a different background color (#FFFFFF) and serves as an alternative download option, complementing the primary CTA."
      },
      "confidence": 0.9
    },
    "personality": {
      "tone": "modern",
      "energy": "medium",
      "targetAudience": "tech-savvy professionals"
    },
    "designSystem": {
      "framework": "custom",
      "componentLibrary": ""
    },
    "confidence": {
      "buttons": 0.9,
      "colors": 0.9,
      "overall": 0.9
    },
    "__llm_metadata": {
      "logoSelection": {
        "llmCalled": true,
        "llmSucceeded": true,
        "finalSource": "llm",
        "rawLogoSelection": {
          "selectedLogoIndex": 2,
          "selectedLogoReasoning": "Selected #2 because it is visible, has a medium size, and matches the brand name 'Vellum'. It is linked to the homepage, making it the primary brand logo.",
          "confidence": 0.95
        }
      },
      "buttonClassification": {
        "llmCalled": true,
        "llmSucceeded": true
      }
    }
  },
  "images": [
    {
      "file": "https://e4p9rs3sldnmtboz.public.blob.vercel-storage.com/vellum/531c64dd0e.webp",
      "alt": "LLM Agents: The Six Levels of Agentic Behavior",
      "source_url": "https://www.vellum.ai/blog/levels-of-agentic-behavior",
      "image_url": "https://cdn.sanity.io/images/ghjnhoi4/production/bc127570dbddd3d2b71fdc6727e35d9a5ae0dc72-4724x2834.png",
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    {
      "file": "https://e4p9rs3sldnmtboz.public.blob.vercel-storage.com/vellum/0afde87902.webp",
      "alt": "Blog - Vellum",
      "source_url": "https://www.vellum.ai/blog",
      "image_url": "https://www.vellum.ai/_next/image?url=https%3A%2F%2Fcdn.sanity.io%2Fimages%2Fghjnhoi4%2Fproduction%2Fca948b22083a0ec95f7b8cc80cc4d0e0c27f3a99-1920x1080.jpg&w=3840&q=75",
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    {
      "file": "https://e4p9rs3sldnmtboz.public.blob.vercel-storage.com/vellum/45aa4af201.webp",
      "alt": "Reintroducing Vellum for 2025",
      "source_url": "https://www.vellum.ai/blog/reintroducing-vellum-for-2025",
      "image_url": "https://cdn.sanity.io/images/ghjnhoi4/production/61cbebf8e13ac7d364ccd9f42d5ac70e80ff7d2a-3744x3409.heif",
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    {
      "file": "https://e4p9rs3sldnmtboz.public.blob.vercel-storage.com/vellum/72c0c8ca5e.webp",
      "alt": "Liz Acosta - Vellum Blog",
      "source_url": "https://www.vellum.ai/blog/author/liz-acosta",
      "image_url": "https://www.vellum.ai/_next/image?url=https%3A%2F%2Fcdn.sanity.io%2Fimages%2Fghjnhoi4%2Fproduction%2Fd800eb8405d680fb84eb7f77fb8bd96628d3f7fb-2000x2000.png&w=3840&q=75",
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      "bytes": 783035,
      "query": "site:vellum.ai blog",
      "query_suffix": "site:vellum.ai blog"
    },
    {
      "file": "https://e4p9rs3sldnmtboz.public.blob.vercel-storage.com/vellum/0176fd4091.webp",
      "alt": "A practical guide for AI observability for agents (2025 edition)",
      "source_url": "https://www.vellum.ai/blog/understanding-your-agents-behavior-in-production",
      "image_url": "https://cdn.sanity.io/images/ghjnhoi4/production/7cd26ead57c32cc538047bb58bcefc0140533898-4864x3264.heif",
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    },
    {
      "file": "https://e4p9rs3sldnmtboz.public.blob.vercel-storage.com/vellum/aac42dac47.webp",
      "alt": "Blog - Vellum",
      "source_url": "https://www.vellum.ai/blog",
      "image_url": "https://cdn.sanity.io/images/ghjnhoi4/production/141008e6eb0c19004c38a7e08307299506e2f16a-1165x627.png",
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      "height": 627,
      "bytes": 53503,
      "query": "site:vellum.ai blog",
      "query_suffix": "site:vellum.ai blog"
    }
  ],
  "font_resources": [
    {
      "family": "DM Sans",
      "google_fonts_url": "https://fonts.google.com/specimen/DM+Sans"
    },
    {
      "family": "Instrument Serif",
      "google_fonts_url": "https://fonts.google.com/specimen/Instrument+Serif"
    }
  ],
  "google_fonts_css": "https://fonts.googleapis.com/css2?family=DM+Sans&family=Instrument+Serif&display=swap",
  "font_download_note": "Not found on Google Fonts? Agent Instructions that you can follow if you have permission to use the fonts:\n\nCharacterQuilt.com suggests this flow that can help:\n\n1. Open the company's homepage in a browser with DevTools open.\n2. In the Network tab, filter by \"Font\" (or by extension: woff2, woff, ttf, otf).\n3. Hard-reload the page and click around (pricing, blog, careers) — some weights only load on specific routes.\n4. For each captured font URL: right-click → Save As to download the file locally.\n5. View the page's CSS (DevTools → Sources, or curl the stylesheet URLs) and copy out the matching @font-face declarations. Rewrite each `src: url(...)` to point to your local file path.\n\nProgrammatic alternative: load the URL with Playwright or Puppeteer, listen for `response` events whose `Content-Type` starts with `font/`, and write the body to disk. The CSS extraction step is the same.\n\nOnly do this if you have permission to use the brand assets — most proprietary fonts are licensed and may not be redistributable.",
  "page_url": "https://characterquilt.com/branding/vellum",
  "agent_instructions": "You are designing or implementing in Vellum's brand identity.\n\n# Brand profile\n- Company: Vellum\n- Source: https://www.vellum.ai/\n- Color scheme: light\n\n# Colors\n- primary: #95A2AD\n- secondary: #1264A3\n- accent: #216C37\n- background: #FFFFFF\n- textPrimary: #1A1A1A\n- link: #216C37\n\n# Typography\n- primary: DM Sans — https://fonts.google.com/specimen/DM+Sans\n- heading: Instrument Serif — https://fonts.google.com/specimen/Instrument+Serif\n\nLoad all fonts at once: <link rel=\"stylesheet\" href=\"https://fonts.googleapis.com/css2?family=DM+Sans&family=Instrument+Serif&display=swap\">\n\n# UI Components\n- input: background=transparent, textColor=#1A1A1A, borderColor=null, borderRadius=0px, shadow=none\n- buttonPrimary: background=#111111, textColor=#FFFFFF, borderRadius=999px, shadow=rgba(0, 0, 0, 0.08) 0px 2px 6px 0px\n- buttonSecondary: background=#FFFFFF, textColor=#1A1A1A, borderRadius=100px, shadow=none\n\n# Brand voice\n- Tone: modern\n- Energy: medium\n- Audience: tech-savvy professionals\n\n# Working with these fonts\nNot found on Google Fonts? Agent Instructions that you can follow if you have permission to use the fonts:\n\nCharacterQuilt.com suggests this flow that can help:\n\n1. Open the company's homepage in a browser with DevTools open.\n2. In the Network tab, filter by \"Font\" (or by extension: woff2, woff, ttf, otf).\n3. Hard-reload the page and click around (pricing, blog, careers) — some weights only load on specific routes.\n4. For each captured font URL: right-click → Save As to download the file locally.\n5. View the page's CSS (DevTools → Sources, or curl the stylesheet URLs) and copy out the matching @font-face declarations. Rewrite each `src: url(...)` to point to your local file path.\n\nProgrammatic alternative: load the URL with Playwright or Puppeteer, listen for `response` events whose `Content-Type` starts with `font/`, and write the body to disk. The CSS extraction step is the same.\n\nOnly do this if you have permission to use the brand assets — most proprietary fonts are licensed and may not be redistributable.\n\n# Full machine-readable profile\nhttps://characterquilt.com/branding/vellum.json",
  "page_markdown": "# Vellum Brand Identity\n\nA complete profile of **Vellum**'s visual system — colors, typography, components, and personality — extracted from https://www.vellum.ai/. Built for designers, agents, and AI tools.\n\n- Page: https://characterquilt.com/branding/vellum\n- Machine-readable JSON: https://characterquilt.com/branding/vellum.json\n- Per-page llms.txt: https://characterquilt.com/branding/vellum/llms.txt\n\n## Quick Facts\n\n| Field | Value |\n|---|---|\n| Primary | #95A2AD |\n| Accent | #216C37 |\n| Body Font | DM Sans |\n| Heading Font | Instrument Serif |\n\n## Color Palette\n\n- primary: #95A2AD\n- secondary: #1264A3\n- accent: #216C37\n- background: #FFFFFF\n- textPrimary: #1A1A1A\n- link: #216C37\n\n## Typography\n\n- primary: DM Sans — https://fonts.google.com/specimen/DM+Sans\n- heading: Instrument Serif — https://fonts.google.com/specimen/Instrument+Serif\n\n## Visual Assets\n\n- Logo: https://www.vellum.ai/vellum-logo.svg\n- Favicon: https://www.vellum.ai/favicon.svg\n- Social card (og:image): https://www.vellum.ai/cover-image.jpeg\n\n## UI Components\n\n- input: background=transparent, textColor=#1A1A1A, borderColor=null, borderRadius=0px, shadow=none\n- buttonPrimary: background=#111111, textColor=#FFFFFF, borderRadius=999px, shadow=rgba(0, 0, 0, 0.08) 0px 2px 6px 0px\n- buttonSecondary: background=#FFFFFF, textColor=#1A1A1A, borderRadius=100px, shadow=none\n\n## Brand Personality\n\nTone: modern · Energy: medium · Audience: tech-savvy professionals\n\n## Vellum Brand in the Wild\n\nReal-world brand assets — ads, campaigns, marketing materials.\n\n- **LLM Agents: The Six Levels of Agentic Behavior**\n  - Image: https://cdn.sanity.io/images/ghjnhoi4/production/bc127570dbddd3d2b71fdc6727e35d9a5ae0dc72-4724x2834.png\n  - Source: https://www.vellum.ai/blog/levels-of-agentic-behavior\n- **Blog - Vellum**\n  - Image: https://www.vellum.ai/_next/image?url=https%3A%2F%2Fcdn.sanity.io%2Fimages%2Fghjnhoi4%2Fproduction%2Fca948b22083a0ec95f7b8cc80cc4d0e0c27f3a99-1920x1080.jpg&w=3840&q=75\n  - Source: https://www.vellum.ai/blog\n- **Reintroducing Vellum for 2025**\n  - Image: https://cdn.sanity.io/images/ghjnhoi4/production/61cbebf8e13ac7d364ccd9f42d5ac70e80ff7d2a-3744x3409.heif\n  - Source: https://www.vellum.ai/blog/reintroducing-vellum-for-2025\n- **Liz Acosta - Vellum Blog**\n  - Image: https://www.vellum.ai/_next/image?url=https%3A%2F%2Fcdn.sanity.io%2Fimages%2Fghjnhoi4%2Fproduction%2Fd800eb8405d680fb84eb7f77fb8bd96628d3f7fb-2000x2000.png&w=3840&q=75\n  - Source: https://www.vellum.ai/blog/author/liz-acosta\n- **A practical guide for AI observability for agents (2025 edition)**\n  - Image: https://cdn.sanity.io/images/ghjnhoi4/production/7cd26ead57c32cc538047bb58bcefc0140533898-4864x3264.heif\n  - Source: https://www.vellum.ai/blog/understanding-your-agents-behavior-in-production\n- **Blog - Vellum**\n  - Image: https://cdn.sanity.io/images/ghjnhoi4/production/141008e6eb0c19004c38a7e08307299506e2f16a-1165x627.png\n  - Source: https://www.vellum.ai/blog\n\n## Working with these fonts\n\nNot found on Google Fonts? Agent Instructions that you can follow if you have permission to use the fonts:\n\nCharacterQuilt.com suggests this flow that can help:\n\n1. Open the company's homepage in a browser with DevTools open.\n2. In the Network tab, filter by \"Font\" (or by extension: woff2, woff, ttf, otf).\n3. Hard-reload the page and click around (pricing, blog, careers) — some weights only load on specific routes.\n4. For each captured font URL: right-click → Save As to download the file locally.\n5. View the page's CSS (DevTools → Sources, or curl the stylesheet URLs) and copy out the matching @font-face declarations. Rewrite each `src: url(...)` to point to your local file path.\n\nProgrammatic alternative: load the URL with Playwright or Puppeteer, listen for `response` events whose `Content-Type` starts with `font/`, and write the body to disk. The CSS extraction step is the same.\n\nOnly do this if you have permission to use the brand assets — most proprietary fonts are licensed and may not be redistributable.\n\n## Machine-Readable Profile\n\n```json\n{\n  \"colorScheme\": \"light\",\n  \"fonts\": [\n    {\n      \"family\": \"DM Sans\",\n      \"role\": \"body\"\n    },\n    {\n      \"family\": \"Inter\",\n      \"role\": \"body\"\n    },\n    {\n      \"family\": \"Instrument Serif\",\n      \"role\": \"heading\"\n    }\n  ],\n  \"colors\": {\n    \"primary\": \"#95A2AD\",\n    \"secondary\": \"#1264A3\",\n    \"accent\": \"#216C37\",\n    \"background\": \"#FFFFFF\",\n    \"textPrimary\": \"#1A1A1A\",\n    \"link\": \"#216C37\"\n  },\n  \"typography\": {\n    \"fontFamilies\": {\n      \"primary\": \"DM Sans\",\n      \"heading\": \"Instrument Serif\"\n    },\n    \"fontStacks\": {\n      \"heading\": [\n        \"instrumentSerif\",\n        \"instrumentSerif Fallback\",\n        \"Instrument Serif\",\n        \"serif\"\n      ],\n      \"body\": [\n        \"ui-sans-serif\",\n        \"system-ui\",\n        \"sans-serif\",\n        \"Apple Color Emoji\",\n        \"Segoe UI Emoji\",\n        \"Segoe UI Symbol\",\n        \"Noto Color Emoji\"\n      ],\n      \"paragraph\": [\n        \"DM Sans\",\n        \"sans-serif\"\n      ]\n    },\n    \"fontSizes\": {\n      \"h1\": \"80px\",\n      \"h2\": \"56px\",\n      \"body\": \"17px\"\n    }\n  },\n  \"spacing\": {\n    \"baseUnit\": 4,\n    \"borderRadius\": \"14px\"\n  },\n  \"components\": {\n    \"input\": {\n      \"background\": \"transparent\",\n      \"textColor\": \"#1A1A1A\",\n      \"borderColor\": null,\n      \"borderRadius\": \"0px\",\n      \"borderRadiusCorners\": {\n        \"topLeft\": \"0px\",\n        \"topRight\": \"0px\",\n        \"bottomRight\": \"0px\",\n        \"bottomLeft\": \"0px\"\n      },\n      \"shadow\": \"none\"\n    },\n    \"buttonPrimary\": {\n      \"background\": \"#111111\",\n      \"textColor\": \"#FFFFFF\",\n      \"borderRadius\": \"999px\",\n      \"borderRadiusCorners\": {\n        \"topLeft\": \"999px\",\n        \"topRight\": \"999px\",\n        \"bottomRight\": \"999px\",\n        \"bottomLeft\": \"999px\"\n      },\n      \"shadow\": \"rgba(0, 0, 0, 0.08) 0px 2px 6px 0px\"\n    },\n    \"buttonSecondary\": {\n      \"background\": \"#FFFFFF\",\n      \"textColor\": \"#1A1A1A\",\n      \"borderRadius\": \"100px\",\n      \"borderRadiusCorners\": {\n        \"topLeft\": \"100px\",\n        \"topRight\": \"100px\",\n        \"bottomRight\": \"100px\",\n        \"bottomLeft\": \"100px\"\n      },\n      \"shadow\": \"none\"\n    }\n  },\n  \"images\": {\n    \"logo\": \"https://www.vellum.ai/vellum-logo.svg\",\n    \"favicon\": \"https://www.vellum.ai/favicon.svg\",\n    \"ogImage\": \"https://www.vellum.ai/cover-image.jpeg\",\n    \"logoHref\": \"/\",\n    \"logoAlt\": \"vellum\"\n  },\n  \"__llm_logo_reasoning\": {\n    \"selectedIndex\": 2,\n    \"reasoning\": \"Selected #2 because it is visible, has a medium size, and matches the brand name 'Vellum'. It is linked to the homepage, making it the primary brand logo.\",\n    \"confidence\": 0.95,\n    \"source\": \"llm\"\n  },\n  \"__llm_button_reasoning\": {\n    \"primary\": {\n      \"index\": 0,\n      \"text\": \"Download for macOS\",\n      \"reasoning\": \"Button #0 ('Download for macOS') is likely the primary CTA due to its prominent placement and action-oriented text. It uses a dark background (#111111) which stands out against the light theme, making it a strong candidate for primary action.\"\n    },\n    \"secondary\": {\n      \"index\": 1,\n      \"text\": \"DOWNLOAD\",\n      \"reasoning\": \"Button #1 ('DOWNLOAD') is selected as the secondary CTA. It has a different background color (#FFFFFF) and serves as an alternative download option, complementing the primary CTA.\"\n    },\n    \"confidence\": 0.9\n  },\n  \"personality\": {\n    \"tone\": \"modern\",\n    \"energy\": \"medium\",\n    \"targetAudience\": \"tech-savvy professionals\"\n  },\n  \"designSystem\": {\n    \"framework\": \"custom\",\n    \"componentLibrary\": \"\"\n  },\n  \"confidence\": {\n    \"buttons\": 0.9,\n    \"colors\": 0.9,\n    \"overall\": 0.9\n  },\n  \"__llm_metadata\": {\n    \"logoSelection\": {\n      \"llmCalled\": true,\n      \"llmSucceeded\": true,\n      \"finalSource\": \"llm\",\n      \"rawLogoSelection\": {\n        \"selectedLogoIndex\": 2,\n        \"selectedLogoReasoning\": \"Selected #2 because it is visible, has a medium size, and matches the brand name 'Vellum'. It is linked to the homepage, making it the primary brand logo.\",\n        \"confidence\": 0.95\n      }\n    },\n    \"buttonClassification\": {\n      \"llmCalled\": true,\n      \"llmSucceeded\": true\n    }\n  }\n}\n```\n"
}