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Prompt & Eval Library Setup

Stop versioning prompts in Notion. Treat them like code.A one-time install: your prompts versioned in git, evals running in CI, and an A/B harness so prompt changes ship like any other deploy. Two weeks. Hand-off to your team after.

price

from $3,500

timeline

2 weeks

cadence

one-time

scope

One-time / fixed scope

PromptfooBraintrustLangSmithGitHub Actions
00// matrix position

Where this fits in the services matrix.

Every service page now names the buyer state, the commercial shape, and the next route. That keeps the catalog navigable instead of feeling like disconnected offers.

01 · best fit

Build automation with a fixed scope and written handoff.

02 · commercial shape

from $3,500 · 2 weeks · One-time / fixed scope

03 · route logic

Use the diagnostic or book a call to confirm fit before scope is written.

04 · decide

Not sure this is the right service? Run the route finder and get the matching path.

00B// system flow

The offer is a route, not a loose task list.

This diagram gives every service page a concrete operating model: intake, system design, implementation, proof, and handoff.

service operating path

Surface ⇄ System

FitsprintScopefrom $3,500Build2 weeksProof4 outcomesHandoffone-time
Prompt & Eval Library Setup moves from fit check to scoped work, then into build/proof/handoff so the buyer can understand how the engagement actually runs.

Prompt Library flow

The diagram is intentionally simplified: it shows the buying logic and operating path, not a decorative fantasy architecture.

price

from $3,500

timeline

2 weeks

cadence

one-time

01// what you walk away with

The outcome, not just the output.

  • 01Prompts in git with diff history, not in a Notion doc
  • 02CI evals on every prompt PR
  • 03A/B harness for safe prompt rollouts
  • 04Documentation pattern your team will actually use
02// scope

Concrete artifacts you keep — and what we leave out.

Working code, written docs, dashboards your team owns. We also list what this engagement deliberately does not cover, so scope is honest before you click.

// deliverables
  • Prompt repo structure + naming conventions
  • Eval suite — at least 3 quality dimensions per prompt
  • GitHub Actions workflow that runs evals on PR
  • A/B rollout helper (e.g., Statsig / LaunchDarkly / hand-rolled)
  • Migration of up to 20 existing prompts
  • Team training session (60 min Loom + live Q&A)
// not included
  • Authoring brand-new prompts (we move what you have)
  • Long-running eval maintenance (see AI Quality Retainer)
03// methodology

How the engagement actually runs.

  1. 1Day 1–4

    Repo + conventions

    Set up the prompt repo, naming conventions, frontmatter schema, version pinning approach.

    Prompt repoCONTRIBUTING.mdNaming spec
  2. 2Day 5–8

    Evals + CI

    Author baseline evals, wire into GitHub Actions, fail-on-regression thresholds.

    Eval suiteCI workflowThreshold config
  3. 3Day 9–12

    A/B + migration

    Stand up the A/B helper, migrate up to 20 existing prompts, run them through evals to get a baseline.

    A/B helperMigrated promptsBaseline eval report
  4. 4Day 13–14

    Training + handoff

    60-minute training session, recorded Loom, written runbook for adding prompts/evals/tests.

    Training LoomRunbook
// track record

Receipts, not promises.

2 weeks
Setup to handoff
20
Prompts migrated
baseline
3+
Eval dimensions per prompt
04// questions

Common questions.

01We use LangChain prompts — does that work?
Yes. We support raw text, LangChain ChatPromptTemplate, and Anthropic message format out of the box.
02What if a prompt change breaks evals?
CI fails the PR. The author sees a diff of which eval cases regressed and by how much.
// engage

Ready to start Prompt Library?

A 30-minute call to confirm fit, scope, and timeline. No pressure, no slides.

automation system

From offer to operating system.

Prompt & Eval Library Setup is presented as a real engagement, not a generic service page: the surface, backend shape, delivery artifacts, and conversion path are all visible before the first call.

Scope Prompt Library

price

from $3,500

timeline

2 weeks

tier

B

Living architecture

Scope ⇄ Ship

The page now exposes how the engagement moves from buyer pain to production artifact, then into measurement and next-step routing.

Scope Prompt Library
  1. 01Repo + conventionsSet up the prompt repo, naming conventions, frontmatter schema, version pinning approach.
  2. 02Evals + CIAuthor baseline evals, wire into GitHub Actions, fail-on-regression thresholds.
  3. 03A/B + migrationStand up the A/B helper, migrate up to 20 existing prompts, run them through evals to get a baseline.
  4. 04Training + handoff60-minute training session, recorded Loom, written runbook for adding prompts/evals/tests.

Conversion path

  1. 01

    Diagnose

    Confirm the real automation constraint, current surface, and business goal before writing code.

  2. 02

    Design the system

    Turn the offer into screens, data, workflows, ownership boundaries, and a measurable delivery plan.

  3. 03

    Ship the artifact

    Deliver Prompt Library as working code, docs, dashboards, or launch assets your team can actually use.

  4. 04

    Route the next move

    Decide whether the work becomes a one-time delivery, a care plan, or a larger product build.

Proof assets

Prompt & Eval Library Setup service visual

Asset slot

Service proof visual

Add a real screenshot, deliverable preview, or dashboard capture from a shipped engagement when approved.

pending real proof
Jason Teixeira, founder of Sage Ideas

Verified asset

Founder/operator photo

Real founder photo reinforcing principal-led delivery.

live

Asset slot

Client quote or logo

Add only permissioned testimonials or logos tied to this service category.

pending real proof
livebuild 81e8c8e2026-07-28 06:02Z
// solo studio// no analytics resold// every commit human-reviewed