DéjàDéjài
Institutional memory for production incidents

The Automated Chain of Custody for Incident Resolution

We replace tribal knowledge with cryptographic proof. Déjà deterministically links your crash telemetry to your resolution artifacts, creating an audit trail that survives employee churn. What is Déjà?

Learns silently before speakingOnly surfaces proven fixesConfidence-gated recall
The Audit Risk Exposure: In 2024, the average cost of a compliance failure due to unverifiable change management was $4.2M. Déjà ensures every deploy has a traceable lineage back to the incident it resolved.

Pricing scales with how far back you can remember — not how many engineers use it.

Built for Regulated Environments
SOC 2 (Roadmap)GDPRCCPAAWS GovCloudSingle Sign-On (SSO)
Match Engine
CURRENT ERROR (TODAY)
LIVE
!
TypeError:
Cannot read 'userId'
at getUserPrefs (auth.ts:142)
Impact: checkout blockedp95: 12.4s
Déjà observes: execution shape · normalized paths · invariant error signals
PAST FIX (6 MONTHS AGO)
RESOLVED
Match Found
Sarah fixed this in PR #402
Confidence: 99%
PR #402 by
@sarah
Added null-check + fallback to anonymous session
Time-to-fix: 2h 14mmerged
Déjà recalls: diff + PR context + who to ask (only if needed)
How Déjà Works

No magic. Just math.

Patent Pending Application 19/430,349

Déjà watches the artifacts you already ship: stack traces, commits, PRs, deploys. When a failure repeats, it returns the last proven fix — with the exact diff and context.

Step 01Capture

Ingest & Normalization

Déjà strips ephemeral noise (timestamps, memory addresses) to calculate the immutable "Fingerprint" of the execution path.

capture:
  execution shape
  normalized paths
  invariant error signals
Step 02Match

Cryptographic Linkage

We do not "predict" matches. We map the SHA-256 hash of the crash signature to the Commit SHA that previously resolved it. It is a binary state: True or False.

Link Verified — PR #402, method: SHA-256
Step 03Recall

Enforce Chain of Custody

When the failure resurfaces, Déjà serves the signed Resolution Artifact. It proves exactly who fixed it, when, and which lines of code were the root cause.

show: diff + PR context + author + link
The Human Signal

Eliminate Key Person Risk

Employees leave. Vendors change. Déjà decouples your institutional knowledge from individual tenure. When the expert leaves, the answer stays.

"

The original author left the company six months ago. When the service deadlocked today, Déjà surfaced her exact remediation steps from the archives. We resolved a Sev-1 in minutes without the subject matter expert.

MK
Director of Platform Engineering
Fintech Unicorn
SJ
Sarah Jenkins
Principal Engineer
Solved
Slack
#incidents-alertsOct 12 • 2:14 PM

"It's not the database. The logs show the worker is stalling on the 3rd retry."

GitHub
PR #4092Oct 12 • 3:30 PM

"Pushing a fix. Added an idempotency key to prevent the double-charge on retry."

The Architect has left. The Answer remains.
Capture the Intent behind the Incident

A stack trace shows the crash. A git commit shows the patch. But neither explains the logic. Déjà cryptographically binds the unstructured investigation (Slack threads, PR comments) to the final resolution artifact. We turn ephemeral chat logs into permanent forensic records — creating a unified, searchable timeline for your next SOC 2 or ISO 27001 audit.

Why Not Just Search JIRA?

Jira says 'Resolved.' Déjà proves it.

Jira tracks the status. Déjà tracks the truth. A "Resolved" ticket is just a claim. Déjà validates that the deployed PR physically alters the execution path of the stack trace. We provide the Chain of Custody that proves the ticket isn't lying.

JiraAdministrative Label (Unverified)
Lacks Technical Evidence
4
INC-4092: Checkout Timeout
Reported by PM_Steve • 4h ago • BLOCKER
Users say the spinner just spins.
Is it the database? Or the frontend?
Need fix ASAP. Clients angry.
Activity:
"@Engineering any update on this? ETA?"
✕ Lacks Technical Evidence
Forensic Evidence
Verified: SHA-256
✓ LINK VERIFIED Verified: SHA-256Oct 12, 2023
Reason: Race condition in payment webhook
src/services/stripe.ts
42 | await db.connect();
43 − const confirm = await stripe.charge();
43 + const confirm = await stripe.charge({{ idempotency_key }})
44 | return confirm.id;
SJ
Fixed by Sarah Jenkins
View PR

"Confluence lists the Plan. Déjà enforces the Truth."

Documentation rots. Wikis fade. The Commit SHA is the only immutable record of how the fire was actually extinguished.

The Zero-Hallucination Warranty

Déjà warrants that it will never suggest a resolution based on probabilistic inference or LLM guessing. We only surface artifacts that are cryptographically linked to the stack trace. If we don't have proof, we stay silent.

Validation

JIRA says "Resolved." Déjà proves it.

Ticket status alone isn't enough. Déjà runs validation gates on every historic fix to validate the Chain of Custody. If any gate fails, the Validation Orchestrator (Patent Pending) rejects the artifact to prevent false positives.

File Gate
Path Validation: PR modifies the stack trace origin.
Rate Gate
Statistical Deviation: Baseline error rate dropped to zero.
Duration Gate
Regression Check: 24h stability window enforcement.
Plus additional gates (e.g., signature stability, rollout window, and regression checks) to prevent false "matches."
Validation Report
confidence is earned
Candidate Fix: PR #402
Status: Verified
File Gate
PASS
Rate Gate
PASS
Duration Gate
PASS
Rule
If any gate fails, Déjà withholds the suggestion. No assumptions. No probabilistic guessing. Only cryptographically verified resolutions.
Stop Repeating Yourself

Corporate Amnesia is an Unbudgeted Liability

Stop paying the "Rework Tax" on your engineering budget. You already paid your most expensive engineers to solve this problem once. Paying them to solve it again is not "maintenance" — it is pure waste. Déjà turns past R&D into a permanent asset.

MetricDiagnosis time ↓ 60–90% on repeat incidents*

*Observed on repeat incidents where a prior validated fix exists in the Déjà vault.

You're not debugging new problems. You're re-solving old ones because nobody remembers the fix.

Every team already paid to fix this once. Déjà makes sure you never pay again.

SLA Breach Penalty
$25k+

In Enterprise, downtime isn't just engineer cost; it's contract penalties.

Repeat Frequency
2–5×

The same failure reappears multiple times across quarters.

Compounding OpEx Burn
$50k–$125k

Per unresolved pattern, per year.

The Zero-Marginal-Cost Defense

Your Incident Vault is an Appreciating Asset

Most software depreciates. Déjà appreciates. Every outage you solve adds a permanent antibody to your system. The longer you use it, the cheaper your uptime becomes.

Pricing

Pricing based on Audit Horizon.

We do not charge per seat. We charge for the length of the forensic history we maintain. Predictable, flat-rate billing for the entire organization.

Standard
$0
/month

Free forever. Starts empty and learns from today forward.

  • ✓ 90-day rolling memory window
  • ✓ Live Indexing Only (No Backfill)
  • ✓ Surfaces proven fixes
Déjà gets better with every resolved incident.
PRODUCTION READY
Business
$299
/month

Flat rate per organization. Unlimited seats.

Everything in Standard, plus:
  • 2-Year Historical Forensic Index (instant institutional memory)
  • ✓ Full-Stack Trace Hashing (links bugs to fixes across major releases)
  • ✓ Advanced validation gates (rate gate + duration gate)
  • SlackSlack & PagerDuty integration
  • ✓ Priority support

Additional audit horizon available as your history grows.

Upgrade to Business
14‑day money‑back guarantee.
Enterprise
Custom

For compliance and infinite scale.

Everything in Business, plus:
  • Unlimited Retention & Legal Hold (multi‑year history)
  • ✓ Self‑hosted / VPC options
  • ✓ Custom validation gates (define your own rules)
  • ✓ SSO (Okta/SAML) & audit logs
  • ✓ SLA & security review
Contact Sales
Deployment Models

Built for Regulated Environments

Choose the deployment model that matches your compliance requirements and security posture.

Cloud
SOC 2 Type II Environment

Fully managed SaaS deployment with enterprise-grade security controls and compliance certifications.

  • ✓ SOC 2 Aligned Architecture
  • ✓ GDPR & CCPA Compliant
  • ✓ NIST 800-53 Encryption Standards
  • ✓ Social Login (GitHub/Google)
  • ✓ Encrypted-at-rest data vaults
  • ✓ Single-tenant logical isolation
Isolated Enterprise Cloud
Isolated Single-Tenant

Dedicated infrastructure with complete network isolation and enhanced security controls for regulated industries.

  • ✓ Data Residency (US / EU / APAC)
  • ✓ Dedicated compute resources
  • ✓ Network isolation (VPC)
  • ✓ Enhanced audit logging
  • ✓ Service Level Agreements (SLAs)
  • ✓ Dedicated support channel
  • ✓ Enterprise SSO (Okta/SAML/SCIM)
Request Architecture Review
FAQ

Security & Compliance FAQ

Accelerate your risk assessment. Definitive answers on data isolation, deterministic matching, and forensic governance.

Do you train public LLMs on our intellectual property?

No. Déjà is a deterministic system, not a generative one. We use hashing algorithms (SHA-256) to match incidents. Your source code is never used to train third-party models, and your data remains strictly isolated within your compliance boundary.

Does this require agents on our production servers?

No. Déjà operates entirely out-of-band. We integrate via read-only APIs with your Version Control (GitHub) and Observability stack. We do not sit in the runtime path, and we add zero latency to your production services.

Is the matching probabilistic (AI) or deterministic?

Deterministic. While we use LLMs for summarization, the core linkage is based on stack trace hashing and AST analysis. This ensures 100% precision for recurrences and eliminates the "hallucinations" common in pure-AI ops tools.

Do we own the Forensic Vault data?

Yes. You are building an institutional asset. All indexed incident history, diff correlations, and resolution timelines can be exported via our Compliance API or raw JSON dumps at any time. We are the custodian, not the owner.

Last Thing

Turn Incident History into a Permanent Asset.

Déjà is not an incident manager. It is a Forensic Vault. Decouple operational resilience from individual tenure and stop paying the "Rework Tax" on problems you have already solved.

Deploy to GitHubRead Security Whitepaper
SOC 2 Type II Ready • End-to-End Encrypted • Deterministic Verification