Tangra AI Writer

From SEO research to published content — all in one place.

Overview

Tangra AI Writer is an end-to-end AI content workspace that takes marketers from keyword research to publishable, SEO-optimized articles and scheduled social posts. It bundles SEO/SERP research, AI outline generation, section-by-section drafting with brand voice, on-page SEO optimization, content refreshing, and multi-format repurposing into one guided workflow, plus a built-in social media suite for composing, scheduling, and publishing to LinkedIn, Facebook, and Instagram. Users choose the AI model (Claude or ChatGPT) per task and pay in credits. Access is gated to Tangra AI Studio subscribers and invited users.

Who it’s for

Content marketers and SEO writers producing search-optimized articles
Solo creators and small teams who want one tool from research to publish
Social media managers scheduling and publishing across LinkedIn, Facebook, and Instagram
Agencies maintaining brand voice consistency across many clients/articles
Founders and B2B marketers repurposing long-form content into multiple channels
Tangra AI Studio subscribers and invited beta users

Key features

SEO Research & SERP Analysis

Enter a target keyword to get search volume, difficulty (Easy/Medium/Hard), search intent, dominant content type, the top SERP competitors (rank, domain, content type, estimated word count), People Also Ask questions, must-cover topics, related entities, and related keywords you can hand-pick to feed into the outline. Costs 8 credits.

AI Outline Generator

Generates a competitor-informed H1/H2/H3 structure with intro bullets, per-section notes, an FAQ section, and conclusion. Sections and subsections are drag-and-drop reorderable, inline-editable, addable/removable, and the outline can be locked before drafting to prevent accidental changes.

Section-by-Section Drafter

Drafts each outline section with AI, applying a selected brand voice and SEO context (primary/secondary keywords, entities). Includes a quick-edit toolbar (Shorten, Expand, Simplify, Professional, Casual, Add Example), free-text custom instructions with saved-instruction history, regenerate, live word count, and direct inline editing of the content.

SEO Optimizer

Tracks primary keyword density with guidance (aim 3–5×) and per-secondary-keyword counts, generates 3 variants each for meta title, meta description, and URL slug, generates a featured snippet, and runs a 9-point SEO checklist with a completion progress bar (keyword in title/first paragraph, internal/external links, min 300 words, etc.).

Brand Voice Manager

Create reusable brand voices manually or by pasting writing samples for AI analysis. Configure target audience, formal/playful/technical tone sliders (1–5), Do's and Don'ts rules, goals, and topic clusters. Set a default voice, edit, duplicate-free manage, and delete voices; applied per article during drafting and to social posts.

Content Refresher

Analyzes existing content (from the current article, pasted text, or a URL) against current SERP data to surface missing topics, outdated elements, missing questions, structural issues, and depth opportunities. Choose Quick or Deep refresh, then review changes side-by-side or changes-only with [UPDATED]/[NEW SECTION]/[ENHANCED] highlights and accept to update the article. Gap analysis costs 2 credits.

Repurposing Engine

Transforms a finished article into platform-specific formats — LinkedIn (3 variants), Twitter thread, email newsletter, YouTube script, and short-form video — with a per-format tone selector and batch generation. Outputs are shown in tabs with copy and download buttons.

Social Suite (Compose, Schedule, Publish)

A 5-step social composer (Channel → Copy → Media → Preview → Publish) with AI brainstorming, AI refine chat, hashtag/mention support, media library picker, and live platform previews. Connect LinkedIn, Facebook, and Instagram via OAuth, schedule posts, and manage them on a drag-and-drop calendar (month/week/day) that lets you reschedule and delete.

Article Manager

Browse all articles with stats (total, drafts, in review, published), search by keyword, filter by status and date range, paginate, duplicate, export to Markdown, and delete. Click any article to jump back into its workflow.

How to use it — step by step

Open the Writer and sign in
Go to tangra.link/writer and log in. Tangra AI Writer is gated to Tangra AI Studio subscribers and invited users — if you don't have access yet, use the in-app 'Request Access' button or subscribe to Tangra AI Studio.
Start SEO research
Open the Articles group and select Research. Type a specific target keyword (e.g., 'content marketing tools'), optionally pick from your saved keyword history, and click 'Research' (8 credits). Review search volume, difficulty, intent, top competitors, People Also Ask, must-cover topics, and related keywords.
Pick keywords and generate the outline
In the research results, check the related keywords you want to target, then click 'Generate Outline from Research'. The tool creates an article and an H2/H3 outline with intro, FAQ, and conclusion notes.
Edit and lock the outline
In Outline mode, drag to reorder sections/subsections, click headings to rename them inline, add or remove sections, then toggle the lock to 'Locked' and click 'Start Drafting →'.
Draft each section
In Draft mode, choose an AI model and an optional brand voice, then click through the outline in the left panel and 'Draft This Section' (1 credit each). Refine with Shorten/Expand/Simplify/Professional/Casual/Add Example or a custom instruction, edit text directly, and track progress (drafted/total).
Optimize for SEO
In Optimize mode, review keyword usage, click 'Generate Variants' to produce 3 meta titles, descriptions, and slugs, generate a featured snippet, work through the SEO checklist, and click 'Save SEO Settings'.
Export or publish
From My Articles, export the finished article to Markdown (or copy into your CMS) and set its status to Published. Optionally continue to refresh or repurpose.
Repurpose to other channels (optional)
In Repurpose mode, select target formats (LinkedIn, Twitter, Email, YouTube, Short-form), set a tone per format, and click Generate. Review each format in tabs and copy or download it.
Refresh older content (optional)
In Refresh mode, load the current article, paste text, or point at a URL, run 'Analyze Content Gaps' (2 credits), pick Quick or Deep refresh, then compare and accept changes to update the article.
Compose and schedule social posts (optional)
Open the Social group → New Post. Pick channels (LinkedIn/Facebook/Instagram), write or AI-generate the copy, add media and hashtags, preview per platform, set a schedule time, and publish or schedule. Manage everything on the Calendar, and connect accounts under Accounts.

See it in action

Screens you’ll work with inside AI Writer:

Writer landing (logged out) — The pre-login hero: 'Tangra AI Writer' title with tagline 'From SEO research to published content — all in one place,' the 'Log in to Create Content' button, and client reviews below. — Fig 1. Writer landing (logged out)

SEO Research results — Research mode with the keyword input panel on the left and the results: primary keyword card (search volume, difficulty, intent, content type), Related Keywords table with checkboxes, Top Competitors, People Also Ask, Must-Cover Topics, and Related Entities, plus 'Generate Outline from Research'. — Fig 3. SEO Research results

Outline editor — Outline mode showing the H1, intro bullets, draggable H2/H3 cards with inline-edit and add/remove controls, FAQ and conclusion, the lock toggle, and 'Start Drafting →' with the Research→Outline→Draft→Optimize wizard bar on top. — Fig 4. Outline editor

Section drafter
Draft mode with the AI model + brand voice selectors and outline checklist in the left panel, the current section heading and notes, the quick-edit refinement toolbar, custom-instruction field, editable content area, and live word count.

Fig 5. Section drafter

SEO Optimizer — Optimize mode showing keyword usage, the meta title/description/slug variant generators with character counters, featured snippet box, and the 9-item SEO checklist with completion progress bar. — Fig 6. SEO Optimizer

Repurposing outputs — Repurpose mode with format checkboxes and per-format tone selectors in the panel, and generated outputs in tabs (LinkedIn variants, Twitter thread with char counts, email subject lines + body, YouTube script, short-form scenes) with copy/download. — Fig 7. Repurposing outputs

My Articles library — Articles view with the stats row (Total/Drafts/In Review/Published), search and status/date filters, and the list of article cards showing status badges, primary keyword, word count, and duplicate/export/delete actions. — Fig 8. My Articles library

Social Composer — The 5-step social composer (Channel → Copy → Media → Preview → Publish): channel selection with LinkedIn/Facebook/Instagram, the AI 'Help me get started' idea/refine chat, and the platform-accurate post preview. — Fig 9. Social Composer

Social Calendar — Month/week/day calendar of scheduled and published posts with platform color dots, status badges, drag-to-reschedule, platform filter, and 'New Post' button. — Fig 10. Social Calendar

Connected Accounts — The social Accounts screen listing LinkedIn, Facebook, and Instagram (auto-via-Facebook) with Connect/Disconnect, LinkedIn page selector, token-expiry info, and the privacy note. — Fig 11. Connected Accounts

Settings & controls

Every control in AI Writer, what it does and the options available:

Control	What it does	Options
AI Model selector	Chooses which AI model powers generation for the current tool (outline, draft, refine, SEO meta, refresh, repurpose, social). Each shows a friendly name and credit cost; defaults to Claude Haiku.	Claude Haiku (Fast, 1🪙), Claude Sonnet (Smart, 5🪙), Claude Opus (Genius, 25🪙), ChatGPT Mini (Quick, 2🪙), ChatGPT Pro (Pro, 5🪙)
Target keyword input	The seed keyword for SEO research, with a dropdown of saved/previous keywords (selectable or deletable). Press Enter or click Research to run.	Free text; saved keyword history
Related keyword checkboxes	Select which related keywords from research feed into the generated outline as secondary keywords.	Multi-select checkboxes (top 10 related keywords)
Outline lock toggle	Locks the outline to disable drag-reorder and inline editing; must be locked to start drafting.	Locked / Unlocked
Brand Voice selector (Draft)	Applies a saved brand voice to drafted sections, or uses the default voice.	Default voice, or any saved brand voice
Section refinement toolbar	One-click rewrites of a drafted section plus a free-text custom instruction with saved-instruction history and regenerate.	Shorten, Expand, Simplify, Professional, Casual, Add Example, Custom instruction, Regenerate
Tone sliders (Brand Voice)	Define a brand voice's tone profile on three 1–5 scales.	Formal 1–5, Playful 1–5, Technical 1–5
Brand voice creation mode	How a brand voice is built — entered by hand or extracted by AI from pasted samples.	Create Manually, Analyze Samples
Refresh input mode	Source of content to analyze and refresh.	Current Article, Paste Text, From URL
Refresh depth	How aggressively the refresher rewrites the content.	Quick Refresh (update dates/stats + 1 section), Deep Refresh (restructure, rewrite, +2–3 sections)
Refresh comparison view	How original vs refreshed content is displayed.	Side by Side, Changes Only
Repurpose formats	Which platform formats to generate from the article (multi-select), each with a per-format tone.	LinkedIn, Twitter Thread, Email Newsletter, YouTube Script, Short-form Video
Repurpose tone	Tone applied to each selected repurpose format.	Professional, Conversational, Engaging, Enthusiastic, Energetic, Educational, Humorous
Article filters	Filter and search the article library.	Search text, Status (All/Draft/In Review/Published), Date from/to
Social channel picker	Target platforms for a social post (multiple allowed); character/media limits adjust to the strictest selected platform.	LinkedIn (3,000 chars), Facebook (63,206 chars), Instagram (2,200 chars)
Social AI generation (Composer)	Brainstorm idea cards then refine the chosen draft via chat, optionally guided by a brand voice and model.	Brand voice, AI model, topic + CTA, refine prompts (Add Hook, Concise, Professional, Conversational, Bullet Points, Rephrase, New Angle)
Post scheduling	When the post goes out; drafts auto-save and can be published immediately or scheduled.	datetime picker (defaults to next hour); publish now or schedule
Calendar view & filter	View and reschedule scheduled posts; drag posts to a new day.	Month / Week / Day; platform filter (All/LinkedIn/Facebook/Instagram)
LinkedIn author / page selector	Choose whether a LinkedIn post is published as you or as a managed Page, and set a default author URN.	Personal profile or connected LinkedIn Pages

AI models

AI Writer lets you pick from a curated lineup of AI models — each shows its credit cost in the app. Available models:

Claude Haiku ("Fast") — Anthropic, default, 1 creditClaude Sonnet ("Smart") — Anthropic, 5 creditsClaude Opus ("Genius") — Anthropic, 25 creditsChatGPT Mini ("Quick") — OpenAI, 2 creditsChatGPT Pro ("Pro") — OpenAI, 5 credits

Outputs & formats

SEO-optimized long-form article (H1/H2/H3 sections, intro, FAQ, conclusion)
Markdown export of full article (.md download)
Meta title (50–60 chars), meta description (150–160 chars), URL slug, featured snippet (40–60 words)
LinkedIn post — 3 variants (statement, story, question)
Twitter/X thread — 5–10 tweets (≤280 chars each)
Email newsletter — subject lines + body
YouTube script — 3–5 minute video script
Short-form video script — TikTok/Reels 30–60s with scene visuals and text overlays
Repurposed asset download (.txt) and copy-to-clipboard
Scheduled/published social posts to LinkedIn, Facebook, Instagram
AI captions, hashtag groups, and content ideas for social

Pro tips

Use specific, long-tail keywords (3–5 words) for research — 'email marketing automation' beats 'marketing' — and check the difficulty badge (Easy <30, Medium 30–60, Hard >60).

Lock the outline before you start drafting so drag-reordering or inline edits can't change your structure mid-write.

Start drafting on Claude Haiku (Fast/1 credit) to fill sections cheaply, then switch to Sonnet or a Pro model only for sections that need extra polish.

In the SEO Optimizer, aim for 3–5 uses of your primary keyword and make sure it appears in the meta title and first paragraph — the checklist flags over-optimization above ~10 uses.

Generate all repurpose formats in one batch and tailor tone per platform (e.g., Professional for LinkedIn, Energetic for short-form) instead of one at a time.

Run a content refresh every 3–6 months; use Deep mode for major rewrites and accept changes selectively after comparing side-by-side.

Save your favorite custom refine instructions — both the section drafter and the social composer remember them for one-click reuse.

AI Writer FAQ

Who can use Tangra AI Writer?

It's gated access. After logging in, the tool is available to Tangra AI Studio subscribers and invited users. If you don't have access, you can click 'Request Access' (you'll be notified by email if granted) or subscribe to Tangra AI Studio.

Which AI models can I choose, and what do they cost?

You can pick per task from Claude Haiku (Fast, 1 credit, the default), Claude Sonnet (Smart, 5), Claude Opus (Genius, 25), ChatGPT Mini (Quick, 2), and ChatGPT Pro (Pro, 5). The model selector shows the credit cost next to each option.

How are credits used across the workflow?

SEO research costs 8 credits, content gap analysis (Refresh) costs 2 credits, and each drafted section costs 1 credit. Outline, refine, SEO meta, repurpose, and social generation consume credits based on the AI model you select. If you run out, the in-app credit/Action Center prompt appears.

Does it actually analyze real search results?

Yes. SEO research pulls live SERP and keyword data — search volume, difficulty, intent, top-ranking competitors with estimated word counts, People Also Ask questions, must-cover topics, and related keywords — which then informs the AI-generated outline.

Can I keep my content on-brand?

Yes. The Brand Voice Manager lets you create voices manually or by having AI analyze your writing samples, setting audience, formal/playful/technical tone sliders, Do's and Don'ts, goals, and topic clusters. You select a voice when drafting sections and when generating social posts, and can set a default.

How do I get my article out of the tool?

From My Articles you can export any article to Markdown (.md) or copy it into your CMS, and mark it Published. You can also duplicate articles and filter/search your library by status and date.

What can the repurposing engine produce?

From a finished article it generates LinkedIn posts (3 variants: statement, story, question), a 5–10 tweet Twitter thread, an email newsletter (subject lines + body), a 3–5 minute YouTube script, and a 30–60s short-form video script with scene visuals and text overlays. You can set a tone per format, generate in batch, then copy or download each.

Which social platforms can I publish and schedule to?

LinkedIn, Facebook, and Instagram. You connect them via OAuth on the Accounts screen (Instagram connects automatically when you link a Facebook Page with a connected Instagram Business account). You can publish immediately or schedule, then manage and drag-reschedule posts on the month/week/day calendar.

Can I update old content instead of writing from scratch?

Yes. The Content Refresher analyzes your current article, pasted text, or a URL against current SERP data to find missing topics, outdated elements, missing questions, and structural/depth gaps, then does a Quick or Deep refresh. You review changes side-by-side or changes-only and accept them to update the article.