Context Trimmer for Claude Code and Codex

capsul is a CLI that sends Claude Code and Codex only what your task needs, so your plan lasts longer.

In plain English

CAPSUL is a command-line tool that sends Claude Code and Codex only what a task needs. That makes a user's AI plan last longer. Programmers pay a subscription. TrustMRR shows about $51 a month in recurring revenue. The tool trims the context, while the AI helpers write the code.

Automation90%

Startup costNot disclosed

Time to first $Not disclosed

Monthly range*$51 MRR

~$51 MRR; $0 verified revenue last 30 days (TrustMRR/Polar, Oct 29, 2026)

DifficultyHard

SourceTrustMRR - CAPSUL ↗

Operator: kjuu

Verified

Revenue independently checked: documents reviewed by a publication, or a public dashboard.

TrustMRR Polar-verified (~$51 MRR, $0 last 30 days, ~2 customers) ↗

Not disclosed.

The tool stack

Polar ↗

4% + 40¢ per transaction

Payments / merchant of record

Anthropic API ↗

Pay per token

LLM / agents

Next.js ↗

Free (open source)

Web app framework

Prices are the vendors' published list prices as researched in Oct 2026 and change often — always check the vendor's pricing page.

Step-by-step setup

Ship an API or tool developers and agents call directly.
Great docs, SDKs and MCP/CLI access.
Usage-based or tiered pricing.
Grow via developer communities and integrations.

What's automated vs. the human 10%

The machine does

Core AI generation/analysis
Billing and onboarding

You still do

Product quality and support
Distribution and marketing
Compliance and edge cases

Overview

capsul is a CLI that sends Claude Code and Codex only what your task needs, so your plan lasts longer.

Operator: kjuu. Category on TrustMRR: Other. Founded: 2026-08-11. Website: https://www.capsul.chat/

Estimated split: about 90% of the work automated, 10% human.

Realistic income

TrustMRR (checked Oct 29, 2026) shows about $51 MRR and $0 in Polar-verified revenue over the last 30 days. This is one operator’s result, often after months or years of work, and doesn’t predict yours. Check the live listing — numbers change.

Risks

Platform dependency on upstream models/tools.
Support burden from technical users.
Startup cost and time to first dollar are not disclosed.

*Income figures are illustrative ranges based on public pricing and typical outcomes reported by practitioners, not guarantees. Most new online businesses earn little or nothing at first. Not financial, legal or tax advice.