run·7f3a…·traced

Every run, traced.

Studio is the visual console for your agent. Every invocation opens as a trace — a waterfall of steps with timing, the model calls it made, structured logs and the cost it spent — and the same console browses the agent's database, RAG, storage, queues, secrets, config and contract, clears human approvals in an inbox, and fires test runs from the Playground. The same console UI runs against your local stackbone dev emulator (its Studio API on localhost:4242) and, unchanged, against the cloud.

Read the docs Local development

Studio comes up with stackbone dev

11 screens
same console local & cloud
per-run cost

run · 7f3a… · webhook

agentinvoke4.18 s

llm_callclassify intent842 ms

rag_queryretrieve refund policy503 ms

db_queryload customer record244 ms

hitl_pauseawait human approval—

queue_publishenqueue refund job161 ms

http_fetchnotify webhook1.20 s

trigger webhook · duration 4.18 s · cost $0.0413 · trace 7f3a…

illustrative trace

01 · The trace

select a step

A run opens as a waterfall of steps. Click a step to inspect what it did — its timing, its status and its payload.

agent

invoke

healthy

Duration: 4.18 s
Start: 2026-06-04T09:41:02.118Z

Payload

{
  "input": { "query": "refund over 500 EUR?" },
  "trigger": "webhook"
}

llm_calla model call through the gateway

db_querya query against the agent's Postgres

http_fetchan outbound HTTP request

queue_publisha job pushed onto a queue

hitl_pausethe run paused for a human decision

tool_calla tool the agent invoked

rag_querya retrieval over a RAG collection

storage_opa read or write against object storage

agentthe root invocation that owns the trace

A trace is a waterfall of these step types, indented by parent.

Cost shown as the run's estimated USD; duration as ms under a second, then seconds.

02 · The panel

three states · one bar

Studio is the console docked at the bottom of the app shell, scoped to the active agent. It has three discrete states — no drag handle.

Panel expands; the shell stays visible in the top ~30%. Screens get the full width.

Closing returns to collapsed — the bar is always part of the shell, never hidden.

Refresh starts collapsed; no auto-expand.

ctrl ` toggles collapsed ↔ mid · scoped to the active agent.

/app/:slug shellschematic

Studio▾ support-droidLOCAL: tunnelctrl `

Runs Timeline

A dock state only changes the panel's height — not which screen you're on. The DB Explorer is shown at max simply because a wider, table-heavy screen is what benefits from the extra height.

03 · Eleven screens

11 screens · 3 groups

The same console hosts everything that touches the agent — grouped by what you reach for.

A · Run-level

Runs Timelineevery invocation, newest first

Logs Tailstructured logs, streaming

HITL Inboxapprovals awaiting a human

Playgroundfire a test invocation

B · Agent state

DB Explorerbrowse the agent's Postgres

Queuesjobs and their status

Storageobject buckets and files

RAG Collectionsdocuments and retrieval

C · Configuration

Secretsinjected secret names

Dynamic configversioned runtime config

Contract Viewerthe resolved agent contract

The HITL Inbox dot is amber to mark a state — approvals awaiting a human — not a live count.

04 · The Playground

DOESN'T COUNT TOWARD PUBLIC METRICS

The Playground sends a real invocation — the browser sets X-Stackbone-Playground: 1 — and it bills like any other run. It is excluded only from public Trust-Layer metrics.

invoke

{ "query": "refund over 500 EUR?" }

Send invocation

result

run · a91c… · playground$0.0041

opens as a trace, same as any run.

Reinvoke in Playground
View run logs
Open in Tempo

the console you debug in is the console you ship.

05 · Same console

One Studio UI. It runs locally under stackbone dev and docks into the cloud shell — same trace, same explorers, same inbox, same Playground.

local· on your machinestackbone dev · localhost:4242

cloud· in the platformdocked in the /app shell

identical on both

The trace
The explorers
The HITL inbox
The Playground

See every run while you build.

Read the docs Local development