How does Lettters write SEO content?

Lettters deploys 6 AI agents that crawl competitors, map target keywords, identify content gaps, and generate publish-ready blog posts with an average SEO score of 91/100 — in about 90 seconds per post.

Does AI-generated content rank on Google?

Yes. Lettters produces content grounded in real competitor research and keyword data, not generic templates.

What is included in the free plan?

The free plan includes 3 AI blog posts, competitor analysis, SEO scoring, and a content calendar. No credit card required.

Does Lettters have a public API?

Yes. Growth and Scale plans include a public REST API to generate blog posts programmatically.

How it works Features API Pricing

competitor.scan ✓

SEO score 94/100

+22 keywords

6 agents · live competitor research

SEO content that
writes & ranks itself.

Give Lettters your URL and niche. A team of AI agents studies your competitors, mines the keywords that convert, and ships a publish-ready post — tuned to rank.

Write your first post free See how it works

No credit card · 3 free posts · API included

lettters · agent run

Crawlerdone

Competitor Analystdone

Keyword Researcherdone

Content Strategistrun

SEO Writerqueued

00:02crawlerindexed 38 pages

00:05analystfound 4 rivals · 24 posts read

00:08researchmapped 18 keywords

00:11strategygap: "PM for SaaS teams"

00:13strategyoutline locked · 6 sections

00:14›▋

Powering content teams at

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THE PIPELINE

Four steps. Zero busywork.

From a blank URL to a ranking post in about 90 seconds — every step handled by a specialised agent.

Crawl your site

Reads your pages to learn your niche, tone and internal-link targets.

Study rivals

Pulls the top-ranking pages for your topic and reverse-engineers what works.

Mine keywords

Finds the search terms with real volume and a difficulty you can win.

Write & score

Drafts a complete post, then grades and tunes it until it clears the SEO bar.

WHAT YOU GET

Built like an SEO team, priced like software.

Every post scored before it ships

The editor agent grades keyword placement, structure, readability and meta — and won't hand off a post until it clears the bar.

94Excellent

✓Keyword in title & H1pass

✓Heading structure6 H2

✓Meta description148c

✓Readability64

Competitor intelligence

See exactly which rivals rank, how long their posts are, and where the gaps are.

Keyword mapping

Every post is built around terms with volume you can realistically rank for.

On-brand voice

Agents learn from your existing pages so drafts sound like you, not a robot.

Live agent logs

Watch every step stream in real time — full transparency, no black box.

DEVELOPER API

One endpoint. Blogs in any project.

Send a URL, niche and topic — get back a fully-researched, SEO-optimised post. The same agent team runs server-side, so you can wire automated content into any app, CMS or workflow.

✓Drop automated blogs into any CMS, app or workflow

✓Stream live agent logs over webhooks

✓Same research pipeline, fully server-side

Read the API docs →

generate.shcURL

curl -X POST https://lettters.com/api/public/blogs/generate \
  -H "Authorization: Bearer rf_live_8f4c2a91…" \
  -H "Content-Type: application/json" \
  -d '{
    "url": "yoursite.com",
    "niche": "project management software",
    "topic": "reducing churn with onboarding"
  }'

# → 202 Accepted
# { "id": "blg_x9f2", "status": "researching" }

PRICING

Pay for posts, not seats.

Start free. Scale when the traffic does.

Starter

$29/mo

For indie makers and small blogs.

Start free

✓20 AI blog posts / month

✓Competitor analysis

✓Content calendar

✓SEO scoring

Your competitors are
already publishing.

Point Lettters at your site and ship your first ranking post in the next two minutes.

Start writing free →

How it works API Pricing Dashboard

SEO content thatwrites & ranks itself.