Your AI agent writes technically correct code that quietly breaks your architecture.
Contexer captures the why behind your repo — roadmaps, constraints, tribal knowledge — through 60-second micro-interviews, and compiles it into a living CLAUDE.md your agents actually follow.
+ import { useState } from 'react';+ // fetch directly from component+ const res = await fetch('/api/users');+ const data = await res.json();// violates: data layer must go through repository pattern// violates: no raw fetch — use createServerFn
// loaded rules: 14 active · CLAUDE.md @ v3.2+ import { getUsers } from '@/lib/users.functions';+ export const Route = createFileRoute('/users')({+ loader: () => getUsers(),+ });// ✓ matches repository pattern (Sarah, Oct 14)
Compiles guardrails for every major coding agent
AI agents are brilliant at pattern matching.
Terrible at remembering yours.
Documentation rots
READMEs and ADRs lag behind code by weeks. By the time the agent reads them, they're already wrong.
Tribal knowledge stays tribal
The reason you don't use that ORM is in someone's head. The agent will helpfully reintroduce it.
Rules drift every commit
A new top-level dir, a swapped dependency, a renamed pattern — your CLAUDE.md is stale by Friday.
A loop, not a doc.
Context capture as a side effect of shipping.
Scanner finds the hotspots
Read-only GitHub OAuth. We parse your file tree, dependencies, churn, and CODEOWNERS to identify the 5–10 files where architectural decisions live.
/repo ├─ packages/ │ ├─ api/ ← hotspot · 4 owners · 31 commits │ └─ shared/ ← hotspot · gold standard ├─ services/ │ └─ billing/ ← decay · 2 deps swapped └─ CLAUDE.md ← v3.2 · 14 active rules
60-second persona pings
Lead devs answer 3 questions on roadmap and hard constraints. Juniors flag onboarding friction. Each ping ends with a tap — not a meeting.
→ Sarah (Lead, services/billing)
Q: Is Stripe Adapter the canonical
pattern, or legacy to migrate?
◯ canonical
● migrating → use BillingProvider
◯ legacy, freeze
⏱ answered in 23sLiving artifact, every time
Answers compile into a structured CLAUDE.md and AI-CONFIG.json — opened as a pull request your team can review, diff, and merge like code.
# CLAUDE.md · generated 2026-05-16 ## Hard constraints - never call /api/* directly from components. use createServerFn. - billing: use BillingProvider, not StripeAdapter (migrating, Sarah) ## Gold standard files - packages/shared/users.functions.ts
Git watcher prevents decay
New dependency? Renamed directory? CODEOWNER change? Contexer scores the decay impact and pings only the right stakeholder — never the whole team.
⚠ decay detected · main @ a3f29c1 + added: drizzle-orm@0.30 rule "use Prisma" now stale → pinging @sarah (1 question, 45s) rest of team: no ping
Ask the right person the right question. Once.
Lead engineers
3 questions / monthJunior engineers
2 questions / monthTwo files. Every agent.
Contexer compiles to the formats your agents already read. No new SDK to install. No proprietary format to lock into.
- →CLAUDE.md — for Claude Code, Cursor, Windsurf
- →AI-CONFIG.json — for programmatic injection
- →MCP server — for live, queryable context
- →GitHub PR — every change is reviewable
# Project context for AI agents # auto-generated by contexer · do not edit ## Stack - tanstack start v1, tailwind v4, supabase - never suggest next.js, remix, or react-router-dom ## Hard constraints (from Sarah · Lead) - data access goes through createServerFn only - billing uses BillingProvider (Stripe is migrating) - never import from src/server/ on the client ## Gold-standard references - src/lib/users.functions.ts ← copy this shape - src/routes/_authenticated.tsx ← auth pattern ## Known friction (from juniors · last 30d) - agents keep suggesting useEffect for data fetching - Zod schemas live in src/lib/schemas.ts (not co-located) ## Roadmap signals (next 90d) - migrating off Prisma → Drizzle (in progress) - introducing per-org RLS — do not suggest workarounds
Meets agents where they run.
Asks humans where they already talk.
Contexer doesn't ship another dashboard nobody opens. Interviews land in Slack, Google Chat, or Teams as a one-tap card — context capture without a context switch.
contexer APP 2:14 PM @sarah — 1 question (45s) drizzle-orm was added to /billing. Is Prisma now legacy, or still canonical? [ legacy ] [ canonical ] [ skip ]
Contexer · just now Hey @amir — onboarding ping Where did agents trip you up this sprint? ↳ reply in thread, 60s
Contexer · #platform-eng Decay detected on services/auth CODEOWNERS changed · 2 new files Pinging @lead — adaptive card sent
→And every AI coding agent your team already uses
one artifact · every runtimeCheaper than the next "why did Claude do that?" debug.
Solo
for individuals & OSS
- ✓1 repo · public only
- ✓Manual scans
- ✓CLAUDE.md export
- ✓Community Discord
Team
for product teams shipping with agents
- ✓Unlimited private repos
- ✓Slack integration + decay alerts
- ✓Persona auto-detection
- ✓PR-based artifact updates
- ✓MCP server included
Enterprise
for orgs with platform teams
- ✓SSO + SCIM + audit log
- ✓Self-hosted scanner option
- ✓Custom personas & rules
- ✓SOC 2 Type II
- ✓Dedicated solutions engineer
Stop re-explaining your codebase
to the same agent. Every day.
Onboarding 25 design partners this quarter. Bring a repo, leave with a CLAUDE.md your agents respect.
Product is in private beta · We'll only email you about access.