Maintenance engines

Memory that doesn’t rot.

Cleaning and security engines catch contradictions, merge duplicates, mask sensitive data and track what was true when, before your agents see it.

Memory is not storage

Everyone who has built a second brain for an agent has met the same problem a few weeks in. Old facts sit next to new ones. Two sources disagree and the agent picks one at random. A note written for one team is retrieved for another. The memory has rotted: it is stale, it contradicts itself, and it leaks.

Storing and retrieving is the easy part. Memory has to be maintained and protected every day: reconciled, dated, cleaned, and scoped to whoever is asking. Chordian runs that work as a product, on every fact, before an agent ever sees it.

Six engines

The work that keeps memory true.

The same names appear in the docs, the API and the MCP tools, so what you read here is what you call.

01

Contradiction detection

Conflicting facts are flagged with confidence, never silently overwritten. You decide by policy, or a person reviews.

02

Data loss prevention (DLP)

Sensitive data is detected at ingest and masked before it reaches an agent.

03

Entity coherence

One identity per person, company and deal across every system, resolved at ingest rather than at query time.

04

Bi-temporal model

The memory knows what is true now, what was true then, and when it learned it. In plain words: every fact has two dates.

05

Decay

Stale facts lose confidence over time and fresh signals rise. Rates are set per source and per kind of entity.

06

Memory health

A nightly A to F grade shows how fresh, consistent and complete your memory is, and where to look first.

Entity coherence

One consistent understanding
of everything that matters.

Four systems, four spellings, one person. Entity coherence keeps a single shared identity for every person, company, deal and decision.

Your systems say:

CRM
J. Smith, CEO — Acme Corp
Email
Jonathan Smith <jsmith@acme.com>
Slack
@jsmith-acme
Legal
Jonathan A. Smith, Chief Executive
Chordian Memory
Jonathan A. Smith
CEO · Acme Corp · Confidence 98%
✓ Entity coherence — one identity across every system

Your agents stop guessing which version is correct. Every agent, every system, every session works from the same identity, resolved at ingest.

Contradictions and health

Flagged, dated, graded.

When two sources disagree, the conflict is surfaced with a confidence score. The older fact is kept in history, not deleted, so you can always answer “what did we believe in March?”

Maintenance · PartnershipsIllustrative example

Contradiction caught

CRM · 2023
HQ: Zurich
superseded, kept in history
conflict
Legal · Mar 2026
HQ: Zug
true now · confidence 0.92
A
Freshness
Consistency
Coverage

Conflicting facts are flagged with confidence, never silently overwritten. The memory knows what is true now, what was true then, and when it learned it.

Every term on this page, in one line →

We run the memory and keep it clean.
Your agents do the rest.