Contexere
Platform

context engineering — 2026

Vitoria Lima

for the love of agents

Your experts know what correct looks like.
Your agents don't — yet.

from traces
to expert verdicts

Head of ML

we finally know why agents fail in prod

Agent tracing

Two lines of code. Every LLM call, tool use, and decision — captured across 15+ providers. Zero config.

live

Expert evaluations

Route traces to the people who actually know — physicians, attorneys, analysts. Structured feedback, not thumbs up.

live

Version detection

Every trace links to the exact prompt, model, and tools that produced it. SHA-256 hashing, automatic.

live

Custom labeling schemas

Define evaluation criteria per domain. Weighted scoring, conditional logic, multiple question types.

live

two portals,
one loop

CTO

engineers and doctors finally speak the same language

Engineer Portal

Traces, agents, evals, deployments. Ship better context.

contexere

engineering portal

eng@acme-health.com

overview

7 total traces

trace iduser promptstatus
tr-7f2a8cPatient on Lisinopril with elevated K+ — safe to add spironolactone?escalated
tr-8b3c1dInterpret HbA1c of 6.8% in context of recent steroid courseallowed
tr-9d4e2fReview non-compete clause in Section 7.2not sent
tr-ae5f3aRecommend imaging for persistent lower back pain, 3 weeksallowed
tr-bf6g4bEnterprise plan pricing for 50-seat with HIPAAallowed

SME Portal

Review queue, structured feedback. No code — just judgment.

contexere

sme portal

dr.chen@acme.com

review queue

reviewing trace a3f8c21b · cardiac-triage-review

agent output under reviewsupport-bot v2.3

user prompt

Patient reports chest pain after exercise, 58yo male, history of hypertension

agent response

Recommend immediate cardiac evaluation including ECG and troponin levels. Given age and hypertension history, exercise-induced angina should be ruled out.
0/5 answered

Dr. Chen, Cardiologist

I just answer the questions — the agent gets smarter on its own

LLM-as-Judge
is not enough

Models catch formatting errors. They miss the domain nuance that separates a safe answer from a correct one.

Catches surface errors. Hallucinates confidence. Cannot distinguish between an answer that sounds right and one that is right. Fine for demos.

Chief Medical Officer

our radiologists caught errors no model would

expert knowledge,
versioned

SME Lead

our expertise finally lives outside our heads

Tacit knowledge capture

Transform what experts know but never wrote down into structured, versioned ground truth entries.

live

Version evolution

V1 is your upload. V4 has institutional knowledge. Each cycle compounds expert corrections.

live

Dataset diffing

Compare any two versions side-by-side. See what changed, who changed it, why.

live
v1 uploadv2 +expertv3 +corrections

Expert enrichment

One click to fold expert corrections into your dataset from any eval run.

live

prompt engineering,
done for you

Context synthesis

Experts keep flagging the same issue — Contexere identifies the pattern and writes the fix.

live

Hard constraints extracted from expert corrections. "Never recommend imaging without symptom duration > 48h."

live

Automated improvement loop

Run N rounds of self-correction: analyze failures, generate suggestions, create version, re-evaluate. Hands-off.

in progress
eval runpatternsuggestion
accepteditdismissnew version

Accept, edit, or dismiss

Review each suggestion. Accept to auto-create a new agent version. Always in control.

live

ML Engineer

it's like having a senior prompt engineer who never sleeps

ship context
like you ship code

Canary rollouts

10% → 50% → 100%. Automatic rollback on regression. No big-bang deploys.

in progress

Drift detection

Continuous monitoring against ground truth. Quality drops → new eval cycle triggers automatically.

in progress

Validation pipeline

New context versions validated against historical traces. Only demonstrable improvements get promoted.

coming soon

Metrics history

Precision, recall, F1 tracked across every version. Full confusion matrix analysis.

coming soon

every cycle makes
your agents smarter

capture → evaluate → learn → synthesize → deploy
and again, automatically

CAPTURE
EVALUATE
LEARN
SYNTHESIZE
DEPLOY
↑ repeat

we're in private beta,
come build with us

the context your agents need
lives in your experts' heads

Contexere gets it out

Vitoria

building the future of agent context