Gumbo Prepared for Tixel · April 2026
A proposal from Gumbo
Product + engineering,
evolved.
A six-week engagement to help Tixel's product and engineering team move from one-off AI wins to a shared way of working. Humans and agents, side by side.
Gumbo Proposal · Tixel × Gumbo
Overview
Outcomes on
day one.
Infrastructure
by week six.
This is a six-week engagement for Tixel's ten-person product and engineering group (seven engineers, two PMs, and one designer).

You're not starting from zero: CLAUDE.md, Figma and Context7 MCPs, and Playwright work are already in play. The brief is to turn that experimentation into a shared baseline the whole team can compound on: one tool chain, one shared way of working.

Two days on-site up front so outcomes land immediately. Then four weeks embedded in your repos, tickets, and Slack, hardening the toolchain, widening loops to every seat, and leaving behind the practice muscle to keep the compounding going.
AI-assisted coding is the first gain. The durable wins come from redesigning what's around it: planning, review, release, context.
Steve Caldwell · Gumbo
Gumbo × Tixel 02 / 08
Gumbo Proposal · Tixel × Gumbo
Live learning · Gumbo
What carries beyond
any one client.
This proposal comes out of live work inside active product and engineering teams. The pattern is consistent: teams move through the same arc once AI starts increasing output, and the real work is installing the control plane before speed outruns safety.
The arc
Same arc.
Every team.
01Speed
02Bottlenecks
03Controls
Tool adoption is the easy part. Without shared playbooks, reviewer routing, evals, and writeback loops, teams just create a new kind of chaos faster.
01
First wins come from coding speed.

Individuals get faster quickly. It's real, visible in days. But it's only the first layer, and the durable leverage lives elsewhere.

02
The next bottlenecks move elsewhere.

Planning quality, business logic, review, release confidence, and shared context become the real constraints, usually within weeks of the first speed bump.

03
Tool adoption alone isn't enough.

One live example: a seven-person team Gumbo worked with saw AI-assisted output rise materially on a roughly constant team size. The next-order work was review drag, release safety, and context retention.

04
The workshop is only the start.

Real leverage comes from follow-through: weekly operating reviews, tool and process refinement, and installing controls before exceptions become the operating system. This proposal is structured for that, not a one-off training.

Gumbo × Tixel 03 / 08
Gumbo Proposal · Tixel × Gumbo
Timeline · six-week engagement
Two-day
on-site kickoff,
four weeks
embedded.
The on-site lights up the first four milestones. The four weeks that follow harden the loops against real work, widen coverage across the team, and hand the practice over with named owners.
Week 1 · Day 1On-site

Kickoff & first loop

Repo audit, toolchain install, three parallel tracks. Converge to ship one real ticket. Milestone 01.

Week 1 · Day 2On-site

Agents, evals, playbook v1

Two agents live on trunk, eval harness in CI, playbook v1 merged. Milestones 02 · 03 · 04.

Week 2

Soak week

Team runs the loops on real tickets. Async support in Slack. We watch what sticks and what stalls.

Week 3

Harden & extend

Agents iterated on real PRs. Eval cases grown. Weekly paired sessions with rotating engineers.

Week 4

Every seat covered

Loop audit across all ten attendees. PM & designer loops hardened with observed usage. Milestone 05.

Weeks 5–6Handover

Handover

Playbook v2, written retro against every milestone, 30/60/90 plan with named Tixel owners. Milestone 06.

After the engagement
Three one-hour check-ins at +30, +60, and +90 days, included in this fee. Gumbo has found the compounding value shows up after the workshop, once the team runs into the real review, release, and context bottlenecks. We review the metrics, unclog what's stuck, and fold learnings back into the playbook.
Gumbo × Tixel 04 / 08
Gumbo Proposal · Tixel × Gumbo
Scope
Four components.
On-site kickoff,
then embedded.
Each component has a named owner on our side and a counterpart on yours. The on-site gets the first version of each installed and demonstrated; the four weeks that follow harden them against real work.
01 · Claude Code for everyone

The core coding loop.

Claude Code signed in for all ten attendees, with a shared .claude/settings.json committed to main, MCP servers wired to GitHub, Jira, Figma, and Slack, and a starter set of team slash-commands. Installed Day 1; tuned against real diffs across weeks 3–4.

Day 1 · 11:30 · All ten seats signed in
02 · Agents & MCP

PR-review & ticket-to-spec agents.

Two agent scaffolds arrive pre-built, wired on Day 2 to MCP servers for GitHub, Jira, and Slack via a scoped Tixel service account. Post-workshop: iterated on real PRs, weeks 3–5.

Day 2 → Week 5 · Built, demoed, hardened
03 · Evals & guardrails

The harness that keeps it honest.

An eval runner in GitHub Actions, 8–12 cases seeded from real Tixel tickets, a review-gate workflow template, and lightweight metrics logging. Grown to 20+ cases across weeks 3–5.

Day 2 → Week 5 · CI green, gate live, cases grown
04 · Playbook & 30/60/90

The Tixel way, written down.

A living playbook in your repo, started in the on-site, grown weekly as loops settle and PR-review patterns surface new rules, and handed over at Week 6 with a named Tixel owner against every loop and tool.

Day 2 → Week 6 · Playbook & 30/60/90 plan
Gumbo × Tixel 05 / 08
Gumbo Proposal · Tixel × Gumbo
Curriculum spine
The arc your
team is already
moving through.
The Gumbo sequence layers planning discipline with shipping loops that feed back into the rules. A baseline experiment with structure, installed one layer at a time so faster output stays trustworthy.
01

AI changes the bottleneck.

Faster code generation shifts the real work toward planning, business logic, review, release, and context. The constraint moves; the team needs to move with it.

02

Planning as engineering work.

PM, design, and engineering learn to turn rough intent into better specs, fewer assumptions, and faster validation loops, before a single line gets written.

03

Shared memory that compounds.

Playbooks, slash-commands, and writeback loops move out of someone's private terminal and into team infrastructure.

04

Risk, review, and release control planes.

Risk tiers, reviewer routing, evals, preview environments, and safer deploy paths, installed before exceptions become the operating system.

05

Humane AI-native org design.

Coherent roles, less review thrash, and fewer avoidable incidents across the team. Throughput is only one piece of the picture.

06

Follow-through that compounds.

Weekly operating reviews and 30/60/90 checkpoints keep the workshop from becoming a one-off burst of enthusiasm.

Gumbo × Tixel 06 / 08
Gumbo Proposal · Tixel × Gumbo
Deliverables
What you
keep.
What you own by the end of week six. First versions land in the on-site; hardened across weeks 3–5; handed over at week six. Nothing locked in a Gumbo tool. Everything lives in your repo, your Slack, your docs.

Every seat on Claude Code

All ten attendees signed into Claude Code, with a shared .claude/settings.json committed to main and MCP servers for GitHub, Jira, Figma, and Slack wired via a scoped Tixel service account. One interface, one shared muscle.

A Tixel playbook, in-repo

Your team's loops, rules, and prompt conventions written down in your repo. The single source of truth Claude Code reads on every diff, amended by PR rather than by Slack argument.

Reusable Claude Code skills

Packaged slash-commands for your highest-leverage loops: /review-pr for parallel multi-specialist review, /pr-readiness so first-pass AI output gets caught by the author instead of the reviewer, /amend-playbook when a rule emerges, /classify-pr-risk to tier PRs before review.

Claude review in GitHub Actions

Auto-review on every PR opened, @claude review on demand in comments, and a post-merge pass that proposes playbook amendments back to the repo from review-comment patterns.

Eval harness + PR risk classifier

8–12 evals seeded from real Tixel tickets in CI, plus a tiered risk classifier that routes each PR to the right reviewer (human, agent, or both) before a line gets read.

Handover plan + written retro

A written retro against every milestone, named Tixel owners per loop and tool, and three 30-minute check-ins booked at +30, +60, and +90 days, included in this fee.

Gumbo × Tixel 07 / 08
Gumbo Proposal · Tixel × Gumbo
Commercials
Fixed fee.
Simple terms.
One price for the full six weeks: two-day on-site kickoff, four weeks embedded, and three follow-ups at +30/+60/+90 days. Travel reimbursed by Tixel.
Engagement fee
$40,000USD, fixed Covers the full six weeks: pre-work, two-day on-site, four weeks embedded, week-six handover, and three one-hour follow-ups at +30, +60, +90 days. Travel reimbursed separately by Tixel.
Travel
Reimbursed by Tixel. Business-class round-trip flights for Steve Caldwell, plus 3 nights accommodation near the chosen meeting venue in Sydney or Melbourne, and local transport.
Payment
50% on PO · 50% on week-six handover.
Team
Steve Caldwell + one agent wrangler. Same two humans, start to finish. No hand-offs mid-engagement.

Ready when you are.

A countersigned copy returned by email is sufficient to lock dates and kick off pre-work. Start date TBD.

Steve Caldwell Gumbo steve@hellogumbo.com
Gumbo × Tixel 08 / 08
Tweaks
Try a couple of variants