AI codebase documentation and onboarding

A new engineer’s first month, without waiting on three people

Ramp time is a context problem. The architecture lives in three people’s heads. Agents read the codebase, write down what those people know as a docs pull request, and answer new hires with real file references.

YOU HAND OVERA new hire and the payments repo
Ask the codebaseRead code…
Dana · new hire · day 2How does a refund reach the ledger?
RefundsController.cs:42RefundPolicy.cs:18LedgerClient.ts:77
APIRefundsLedger
Illustrative example: day 1 to first merged change
1Read code
2Map system
3Write docs
4Answer
YOU GETDocs pull request + answers with sourcesEvery answer links to the files it cites
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312 files read

Map services, queues, and data flows

Services, queues, databases, and how a payment travels between them, with the decisions behind the odd parts. It lands as a pull request in your repo, so seniors correct it once instead of explaining it forever.

1payments-api never writes to the ledger directly. Everything goes through events-queue.
2refunds-worker retries with backoff; see decision 0011.
3Each event carries an idempotency key, so replays are safe.
checkout-web0
admin-web0
payments-api1
refunds-worker2
events-queue3
ledger-db0
FIG. 1 · docs/architecture.md
Day 2

Give new engineers answers with links to the code

Why do refunds go through a queue instead of calling the ledger directly?
Because the ledger must apply e
refunds-worker/Handler.cs:64shared/Idempotency.csdocs/decisions/0007-idempotency.md
When the code changes

Refresh documentation after code changes

Run a docs refresh task after a change lands, and review the updates as a pull request like any other.

PR #1688 merged · refunds-worker
- retries: 3, backoff: fixed(2s)+ retries: 5, backoff: exp(1s, max 30s)
docs/modules/refunds.md OUT OF DATE
Failed refunds retry three times, two seconds apart.Failed refunds retry up to five times, backing off from one second to thirty.
Illustrative example, not a quote
6Docs updated in one refresh task
$1.01First full docs pass
0Secrets or config values written into docs
The same day, twice

Sofia uses repository guides to begin her first change

Illustrative example, not a customer result.

Here is what the work looks like today, and what changes when an AI team takes the busywork off the plate.

Without BoldCreateWith BoldCreate
Day 1
Local setup guide is two years out of date.Half a day lost
Setup guide generated from the actual repo.10 min setup
Day 2
Asks a senior how orders flow. He is in meetings.Blocked
Day 1Asks the agent how orders flow. Gets an answer with file links.Unblocked
Day 4
Reads code for hours to make a one-line change.Slow start
Day 2Picks a starter task the agent prepared for her.Right-sized
Day 10
First change finally merged.10 days
Day 4First change merged.4 days
Six days faster to a first merged change

Frequently asked questions

What codebase documentation do agents write?
Agents read your codebase and write an architecture overview, module guides, local setup steps, and starter tasks, delivered as a pull request into your repository.
Can new engineers ask questions about the codebase?
Yes. New hires ask the codebase directly from the Desktop App or the CLI and get answers with links to the code.
How do docs stay current after onboarding?
Run a docs refresh task after the code changes, and review the updates as a pull request.
What does setup for onboarding docs involve?
Connect your repository, choose what to document, and review the first guides. Your next hire can pick up a starter task on day one.

Choose one repository to document

Connect it, review the first guides, and give your next hire a starter task on day one.

$199 a month for 20 seats · AI and sandboxes at provider cost + 10% platform fee