Context engineering for coding agents

Your model isn’t the bottleneck. You are.

Everyone’s waiting on a better model. A scaffolded weak one already beats a careless strong one. Dash indexes your repo, strips the noise, and gives your agent only what matters.

Private beta · free for solo devs at launch

Runs inside every MCP-compatible agent

Claude CodeCursorGitHub CopilotWindsurfClineZed
Skill > scale

The gap was never the model.
It was everything you fed it.

Same weights. Same question. Wildly different answers — because one run got a curated window and the other got a junk drawer. Dash is the difference between the two.

01

Context, not capacity

A frontier model reading forty irrelevant files loses to a small one reading the right three. Dash decides which three.

02

Tokens are a quality metric

Accuracy degrades as the window fills. Cutting tokens isn’t a billing optimisation. It’s an accuracy one.

03

Scaffolding compounds

Caching, filters, compression, routing. Each is worth 40–90% alone. Stacked in order, they’re worth 85% of your bill.

Measured on real code

324k → 48k tokens.
Same task. Same result.

We ran a full 50-turn agentic coding task on a real codebase — with and without Dash’s four-layer stack.

97.9%

noise filtered

out of 12.4M repo tokens

90.6%

RAG retrieval

vs. naive file reads

85.9%

CLI compressed

git status, tests, grep

85.1%

total saved

full 50-turn session

Token Savings Reportmeasured on a real repo

full session reduction

85.1%

324,753 → 48,233 tokens across a 50-turn task

Context filtering

97.9%

RAG retrieval

90.6%

CLI compression

85.9%

Prompt caching

~81%

targeted retrieval

One task with Dash vs. naive full-file reads:

naive: 43,503 tokens

dash: 4,108 tokens

CLI output compression

git status2,100 → 37882%
cargo test8,400 → 84090%
grep -rn3,200 → 70478%
Four layers of token reduction

Filter. Compress.
Tighten. Route.

Token waste comes from four predictable places. Dash attacks them in order — each layer stacks on the last.

01

Control what enters context

The biggest wins come from keeping junk out entirely.

Prompt caching

Cache system prompts, tool defs & CLAUDE.md — pay once per 5-min window.

~81%

.claudeignore / context filters

Exclude node_modules, logs, build artifacts from agent visibility.

40–90%

RAG / codebase indexing

Agent searches a semantic index instead of reading raw files — retrieves only what’s relevant.

90.6%

CLI output compression (RTK)

Compress shell output before it enters the context window.

60–91%
02

Compress what’s in context

Compound gains after filtering.

/compact & context summaries

Summarize & prune accumulated history. Auto-triggered at ~95% context fill.

resets rot

Tool output aggregation

Expose summarized MCP tools — the server does the work, not your context window.

varies

Compact data formats

Replace verbose JSON with MessagePack, TOON, or CSV. JSON wastes 40–70% of tokens.

30–70%
03

Tighten model outputs

Underrated — every output token becomes future context.

Output verbosity control (Caveman)

Strip filler, pleasantries, and over-explanation. Dense answers = less future context.

50–75%

Structured output formats

Request JSON/XML with strict schemas — prevents verbose markdown explanations.

30–60%

Token budget headers

Pass max_tokens and budget hints to cap reasoning tokens.

hard cap
04

Route smarter

Architectural decisions that cut cost at the router level.

Model routing (RouteLLM)

Simple tasks to cheap models, complex ones to frontier — automatically.

40–85%

Scoped sessions

Use /clear between unrelated tasks. Focused sessions cost ~67% less than sprawling ones.

~67%

Pre-downloaded data patterns

Fetch files before the agent loop starts; local reads instead of API calls.

removes overhead
Free configuration wins

Habits that cost nothing.

Prompt caching

~81%

Every session re-sends the full history. With caching, KV tensors for static content are computed once. 81% cost reduction on stable-prefix turns.

/compact & /clear

~67%

Compact after each work phase, clear between tasks. Quality degrades as the context fills — token management is a quality problem.

Expose aggregation tools

varies

Instead of get_all_records, expose get_summary_by_region. The server does the work in milliseconds; the context window stays lean.

Pricing

Free forever for solo.
Team when you scale.

Unlimited projects, unlimited symbols, all 25 MCP tools — free. Add team sharing, cloud sync, and admin controls when you need them.

Solo

$0forever

Join the waitlist
Unlimited projects & symbols
All 25 MCP tools
Persistent agent memory
Live file watcher
CLI output compression
80%+ token savings

Team

Most popular

$30/dev/mo

Join the waitlist
Everything in Solo
Shared team graph
Cloud sync & backup
Multi-repo graph
VS Code extension
Admin controls & priority support

Stop upgrading.
Start scaffolding.

Dash indexes your codebase once, keeps it current, and gives your agents exactly what they need — not the entire repo.