APIVault: Multi-Workspace API Key Manager & Audit Log

Problem and target customer

Why this exists

Customer problem

Indie builders and small teams scatter API keys across spreadsheets, env files, and chat messages with no rotation tracking, no audit trail, and no way to revoke access when a teammate leaves.

Who pays

Indie developers and small engineering teams managing 10-200 API keys across multiple projects and environments who need a single secure vault instead of ad-hoc storage.

Business model

Monthly subscription with a free solo tier and a paid workspace tier for teams needing multiple workspaces and role-based access.

Editorial note

APIVault targets indie developers and small teams who juggle dozens of API keys across projects and environments without a centralized vault. The MVP focuses on one workflow: store keys securely, tag them by environment, track rotation health, and maintain an immutable audit log of every action.

The interface follows a VS Code-inspired dark theme with monospace fonts for key values and traffic-light health badges—green for active, amber for keys nearing rotation age, and red for expired or compromised keys. This visual language is familiar to the target audience and reduces cognitive load when scanning a large key vault.

Team access is scoped per workspace with two roles: admin (full key management and team invites) and viewer (read-only key access for CI or junior developers). The audit log captures every event with actor identity, action type, affected key, and timestamp, giving teams a defensible trail for compliance without the overhead of an enterprise secrets manager.

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What do you need next?

Evaluate the operating tradeoffs quickly, or inspect how to build the MVP.

Evaluate this ideaSee the cost and deployment preview

Compare the three operating paths at the default workload before opening the full calculator.

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Review MVP scope, workflow, states, data rules, architecture, and acceptance criteria.

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Evaluation preview

What would it take to run?

Directional infrastructure estimates for the current 1,200 tracked work items assumption. Open the full calculator when you are ready to change it.

Open full cost and deployment

ManagedSelected

$25-$65/ month

Managed app hosting, database, backups, and basic observability for the developer-ops workflow.

Lowest operating effort

Lean self-hosted

$8-$28/ month

One small VPS running the app, database, media volume, and backup job.

Lowest baseline cost

More control

$45-$125/ month

Separate app, data, storage, and worker capacity for cleaner operations.

Most separation and control

Build blueprint

Build the first paid use case

Product goal

Who it serves and what it must change

Target user: Indie developer or small engineering team managing 10-200 API keys across multiple projects and environments
Problem: Keys are scattered across env files, spreadsheets, and chat with no rotation tracking, no audit trail, and no access revocation when teammates leave
Measurable outcome: A solo developer can onboard 20 keys across 2 workspaces in under 5 minutes and generate an audit report showing all key access events

MVP scope

What ships now and what waits

Included

Encrypted key storage with workspace and environment tagging
Health badges based on key age and rotation status
Manual key rotation with previous-version retention
Immutable activity log with actor, action, key, and timestamp
Team invites with admin and viewer roles per workspace

Excluded

Automated rotation via provider APIs
LLM-based security analysis
SSO/SAML
Public REST API
Calendar-based scheduling

UX and user flow

Screens, actions, and states

Workspace Dashboard

Overview of key count, health distribution, and recent activity per workspace

Select workspaceView health summaryJump to key vault

Key Vault

Table of all keys in the selected workspace with environment filter, health badge, and last-rotated date

Add keyImport .envFilter by environmentClick key to view detail

Key Detail

View key metadata, encrypted value reveal toggle, rotation history, and rotate action

Reveal valueRotate keyDelete keyView rotation history

Audit Log

Timestamped trail of all actions filtered by workspace, key, or team member

Filter by actorFilter by action typeExport log as CSV

Team Settings

Manage workspace team members and their roles

Invite memberChange roleRevoke access

Primary flow

Create workspace and define environments
Add or import keys with environment tags
Monitor health badges and rotate aging keys
Review audit log for compliance
Invite team members and assign roles

Loading, empty, and error states

Key health: active (green), aging (amber), expired (red)
Key rotation: current version and retained previous version
Team member: invited, active, revoked
Workspace: active, archived

Core entity outline

Entities and business rules

Workspace

Top-level container for a project or team's keys and members

Fields: id, name, owner_id, created_at, status
Relations: Has many ApiKeys, Has many TeamMembers, Has many ActivityLogs

ApiKey

Stored credential with environment tag and rotation history

Fields: id, workspace_id, label, encrypted_value, environment, provider, health_status, last_rotated_at, created_by
Relations: Belongs to Workspace, Has many ActivityLogs, Has many KeyVersions

KeyVersion

Retained previous key value for rollback after rotation

Fields: id, api_key_id, encrypted_value, version_number, created_at, superseded_at
Relations: Belongs to ApiKey

TeamMember

User invited to a workspace with a specific role

Fields: id, workspace_id, email, role, status, invited_at
Relations: Belongs to Workspace, Has many ActivityLogs as actor

ActivityLog

Immutable record of every key or team action

Fields: id, workspace_id, actor_id, action_type, api_key_id, metadata, created_at
Relations: Belongs to Workspace, Belongs to TeamMember as actor, Belongs to ApiKey optionally

Business rules

Key values are encrypted at rest with AES-256 and never returned in list responses
Revealing a key value requires admin role and logs a 'view' event in the audit log
Health status is amber when a key has not been rotated in 90 days and red after 180 days or when manually flagged compromised
Only workspace admins can invite members, rotate keys, or delete keys; viewers can only read key metadata
Activity log entries are append-only and cannot be modified or deleted
Previous key version is retained for 30 days after rotation to allow rollback

Architecture and data flow

Components, integrations, and controls

Lovable frontend

Dark-mode UI with workspace sidebar, key vault table, health badges, audit log, and team settings

Node/Express API on Railway

Key CRUD, encryption/decryption, role enforcement, audit log writes, and workspace scoping

PostgreSQL on Railway

Relational storage for workspaces, keys, key versions, team members, and append-only audit log

Make scenario (optional)

Webhook listener that forwards rotation and invite events to Slack or email

Integrations

[object Object]
[object Object]

Data flow

User adds key in Lovable UI → API encrypts value with AES-256 → Postgres stores encrypted value and metadata → Audit log entry written
User rotates key → API creates KeyVersion with old value → New encrypted value stored → Health badge resets to green → Audit log entry written → Optional Make webhook fires
Admin invites member → API creates TeamMember with invited status → Email sent → Member accepts → Status changes to active → Audit log entry written

Failure handling

If encryption service is unavailable, key write requests return 503 and no partial data is stored
If Postgres connection drops, API returns 503 with retry guidance and no audit log entry is lost due to append-only transaction wrapping
If Make webhook delivery fails, the core key operation still succeeds and the event remains in the audit log for later retry
If a team member invite email bounces, the invite record stays in invited status and admin can resend or revoke

Security

AES-256 encryption for all key values at rest
Key values never returned in list API responses; only revealed via explicit detail endpoint with admin role check
Row-level security in Postgres scoped to workspace_id for all key and log queries
Session-based auth with workspace membership validation on every API request

Rate limits

Key reveal endpoint limited to 30 requests per minute per user to prevent bulk exfiltration
Key creation limited to 100 per hour per workspace to prevent accidental flooding
Audit log export limited to 5 per hour per workspace

Deliverables and acceptance

Definition of done for the MVP

Deliverables

Dark-mode web app with workspace, key vault, key detail, audit log, and team settings screens
Node/Express API with encrypted key storage, role enforcement, and audit logging
PostgreSQL schema with workspaces, api_keys, key_versions, team_members, and activity_logs tables
Optional Make scenario for Slack/email notifications on rotation and invite events

Acceptance criteria

A solo developer can create a workspace, define 3 environments, and add 20 keys in under 5 minutes
Key values are encrypted at rest and never appear in list API responses or UI tables
Health badges show green for keys rotated within 90 days, amber for 90-180 days, and red for over 180 days or flagged compromised
Every create, view, rotate, and delete action produces an immutable audit log entry with actor, action, key label, and timestamp
A workspace admin can invite a viewer who can read key metadata but cannot rotate or delete keys

Recommended stack

Enough technology for the first version

Frontend

Lovable

Rapid dark-mode UI build with monospace key display, health badge components, and workspace sidebar navigation.

Backend hosting

Railway

Managed Postgres for encrypted key storage and Node runtime for API endpoints with minimal DevOps overhead.

Database

PostgreSQL on Railway

Relational storage for workspaces, keys, team members, and append-only audit log with row-level security per workspace.

Glue (optional)

Make

Optional webhook to send Slack or email notifications when a key is rotated or a new team member is invited.

Why this is sufficient

Lovable handles the VS Code-inspired dark UI with monospace fonts and badge components without custom design work. Railway provides a single managed environment for Postgres and the Node API, keeping infrastructure simple for a solo builder. Make is optional glue for notifications only, not core key management logic.

Not required for the MVP

LLM API integrationCalendar API integrationCustom CI/CD pipelineKubernetes or container orchestrationThird-party secrets manager connectors

Next stepTurn the blueprint into an execution plan

Copy the build prompt, model the operating cost, and choose where to deploy.

Build and ship

Execution

Build, price, and deploy the MVP

Once the blueprint is clear, use the prompt, cost model, and deployment options to start building.

Build prompt

Copy this into a builder

Lovable

Build prompt

Your build prompt is ready

Open the prompt pack whenever you are ready to take this blueprint into your builder.

Based on the blueprintReady for your builderFollow-up steps included

Cost calculator

Model the MVP operating cost

A technical run-cost estimate for the first production version. Team, acquisition, payment fees, and business COGS are excluded.

Estimated monthly total$25-$65

$13-$33 per 600 tracked work items

Work items or pipeline runs / month1,200 tracked work items

Selected pathEasiest

Pricing checkedAug 2, 2026

Cost breakdown

$25-$65 per month

Low and high values allow for usage variance and plan headroom.

Managed infrastructure

Managed app hosting, database, backups, and basic observability for the developer-ops workflow.

50K tracked work items included, then $8-$20 per 100K tracked work items

$25-$65

Included

Application hosting
Relational database
Basic backups
apivault requests and outcomes state

Not included

Paid acquisition
Founder or team time
Tax or legal review
Custom enterprise procurement

Pricing basis

The estimate combines the selected infrastructure path, required operating modules, selected optional modules, and usage above included monthly allowances. Taxes and regional uplifts are excluded.

Managed app baseline

Deployment options

Pick the operational tradeoff

Choose based on operating preference, not only the headline price.

EasiestRecommended

Railway

Fast Docker deployment for the app, database, worker, and preview workflow without managing a VPS.

$15-90/month before usage-heavy add-ons

Good fit

Fast setup
Low starting cost
Good preview workflow

Limitation

Usage billing needs active monitoring as traffic and jobs grow.

Open Railway

Cheapest

Vultr

Run the app, worker, and database on one small Vultr VPS with Docker Compose and explicit backups.

$8-60/month before managed add-ons

Good fit

Predictable baseline
Portable setup
Room for workers

Limitation

You own patching, backups, monitoring, and incident response.

Deploy on Vultr View the lean VPS guide

More control

DigitalOcean

Separate application, worker, data, storage, and backup responsibilities as the workload grows.

$10-120/month before managed add-ons

Good fit

Cloud VPS control
Global regions
Room for workers

Limitation

You own server setup, patching, backups, and operational monitoring.

Explore DigitalOcean View the separated cloud guide

Start building

Prototype, automate, then deploy

Recommended route

01Vibe-coding builderBuild the key vault UI

Create a dark-mode dashboard with workspace sidebar, key vault table with monospace values and health badges, key detail modal for rotation, audit log view, and team settings page.

Open Lovable 02AutomationWire optional notifications

Set up a Make scenario that listens for rotation and invite webhooks from the backend and sends Slack or email alerts to workspace admins.

Open Make 03DeployDeploy backend and database

Provision a Railway Postgres instance and Node/Express API handling key encryption, workspace scoping, role-based access, and append-only audit logging.

Open Railway

APIVault: Multi-Workspace API Key Manager & Audit Log

Is this worth validating?

Build this if

Avoid this if

Validate first

Why this exists

Customer problem

Who pays

Business model

What do you need next?

What would it take to run?

Build the first paid use case

Who it serves and what it must change

What ships now and what waits

Included

Excluded

Screens, actions, and states

Primary flow

Loading, empty, and error states

Entities and business rules

Business rules

Components, integrations, and controls

Integrations

Data flow

Failure handling

Security

Rate limits

Definition of done for the MVP

Deliverables

Acceptance criteria

Enough technology for the first version

Lovable

Railway

PostgreSQL on Railway

Make

Why this is sufficient

Not required for the MVP

Build, price, and deploy the MVP

Copy this into a builder

Your build prompt is ready

Model the MVP operating cost

Usage assumptions

$25-$65 per month

Included

Not included

Pricing basis

Pick the operational tradeoff

Railway

Good fit

Limitation

Vultr

Good fit

Limitation

DigitalOcean

Good fit

Limitation

Prototype, automate, then deploy

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