CoreID owns sign-in.
Browser authentication uses CoreID authorization code flow with S256 PKCE. Clean does not mint a second identity system beside the platform authority.
CONFIDENTIAL CLIENT · PKCETrust infrastructure should explain how it protects trust.
Clean keeps identity, credentials, tenant boundaries, verification evidence and operational authority explicit. This page describes controls the product actually owns — without borrowing certifications or guarantees it cannot prove.
CONTROL LATTICE
Five boundaries. One operating model.
Clean treats security as a chain of authorities rather than a badge wall. Each boundary below maps to a functioning product control.
Authority is scoped.
Organization membership and authenticated product context bound user-facing and API operations. Business authority is rechecked rather than inferred from decorative UI state.
ORG-SCOPED PRODUCT AUTHORITYSecrets stay server-side.
CoreID client authority is retained in a protected server-owned environment envelope. API keys are stored as hashes and can be scoped, expired and revoked.
NO PLAINTEXT API KEY STORAGEReceipts resist rewriting.
Verification receipts and audit events are protected by database mutation guards so accepted evidence cannot quietly become a different historical story.
IMMUTABLE RECEIPT + AUDIT EVENTSMailbox evidence stays bounded.
Clean may perform bounded SMTP RCPT evidence when authenticated policy enables it. It does not send a verification email and unresolved provider behavior remains unresolved.
NO VERIFICATION EMAIL SENTCLAIM BOUNDARIES
Security language should be as disciplined as security code.
CoreID-backed authentication, S256 PKCE, server-side credential handling, tenant-scoped product authority, hashed API keys, rate limiting, immutable receipts and immutable audit events.
No certification label is published here unless evidence for that certification is actually part of the product authority. Verification also does not establish consent, legal permission or inbox placement.
The public Trust Center, methodology, developer contract, product boundaries and authenticated System surface make the operating model visible instead of hiding it behind vague assurance language.
DUE DILIGENCE PATHS
Follow the evidence from buyer question to product authority.
TRUST CENTER
Product boundaries
What Clean does, does not do, and refuses to overclaim.
Read trust → METHODDecision formation
How normalization, observations, risk and policy become a result.
Read method → DEVELOPERSAPI authority
Authentication, response model, error discipline and integration boundaries.
Inspect API → EVALUATIONMigration playbook
How to compare Clean against an incumbent without reducing evaluation to one label.
Plan evaluation →