What Flows just did
Based on your request to build Design a Single-Loop Agent, Flows created 5 implementation stages and 15 checks.
You asked for: Implement a robust single-loop agent: message history, tool dispatch, result folding, and a clear termination condition.. Flows generated 5 stages because the application requires A single main loop: send context, receive text or tool calls, execute tools, append results, repeat; A typed tool registry with JSON-schema definitions per tool; Deterministic termination: max turns, explicit finish signal, and error budget. Each stage tells your AI builder what to do, tests whether it actually worked, and gives a repair instruction when it fails. These checks are designed to catch: Building an orchestration framework before a single loop works; Dropping or reordering tool results so the model loses causality; No termination condition - the agent loops forever on a stuck task.
Example failure
The form reported success, but no database record was created.
What Flows does
Flows detects the failure, generates a repair instruction, reruns the test, and stores the passing evidence.
Stages — Plan → Build → Test → Fix → Prove → Ship
5 stages · 15 checks · progressive disclosure — open a stage for details
Copy to external builder
Copies a prompt for Claude/Cursor/etc. Records prompt_copied only — not execution, commits, or checks.
Execute through Oort
Requires Sign in with Oort + a provider connection (BYOK). Keys stay on Oort. A model name in the dropdown is not the same as a live connection.
Next
Check off: Turn sequence is explicit
Add a proof note on each check — a checkbox alone is weak proof.
Probes & advanced tools are under “More verification tools”. Experience level: Settings.
Project (saved with proof)
Project binding: Unbound — complete project binding before trusting this run · missing repositoryUrl, repositoryStartCommit, environment, stack
More verification tools (probes, timeline, adapters)Show
App persistence (create → read → assert token)
Body template: {"probe":"{{token}}","title":"flows-probe-{{token}}"}. Needs CORS-readable public create/list endpoints (or inconclusive). Badge only when create→read→refresh finds the token (detects false success).
Two-account authorization (User B cannot see/change User A)
Authorization evidence source: Cross-account ownership test (trust level 5/6). These are not equivalent. Unauthenticated probe alone is weaker (source: unauthenticated API probe). Tokens stay in this browser session only — not uploaded to Flows servers.
Generated edge-case tests (review / approve)
- api_probe Submitting the form empty is rejected with a clear error
- api_probe Each required field can be omitted and fails validation
- api_probe Malformed email is rejected
- api_probe Logged-out users cannot open protected pages
- api_probe Protected API rejects requests without credentials
Generated from this route’s signals — you approve; you do not invent security tests.
Content probe (GET body contains text)
In-product content probe reads response text when CORS allows — not full DOM/click automation. Playwright script is optional and external.
Proof strength
thin · 0/100
Heuristic from notes + probes + gates — not a production certification.
Verification adapters
- ● Deploy URL probe · idle
- ● API path probe · idle
- ● Authz probe (unauth → 401/403) · idle
- ● Browser persistence · idle
- ● App persistence (create→read) · idle
- ● Content / body text probe · idle
- ○ In-product Playwright DOM · not embedded (download external script)
Filled circles = available here. Empty = not shipped. Probes are not a production audit. Adapter docs
Step 1 of 5
Not startedDefine the loop contract
Write down exactly what one turn of the loop does before coding it.
Flows keeps plan, checks, failures, and next steps connected
Your AI tool writes or changes the code
Repository grounds the plan only after inspect
Checks always carry a validation tier
How this plan was created
Plan from project details
Flows creates steps using the goal, requirements, stack, platform, and details you provide.
- Project description
- Selected template / route
- User-entered stack
- Constraints and notes
- Design a Single-Loop Agent
No repository inspection implied. Connect and inspect a codebase to ground steps in real files.
Codebase access
Checking GitHub…
Or paste a repository URL manually
Use these instructions in Claude, ChatGPT, Cursor, Emergent, or another builder.
Design the core loop for a single-agent system and write it as a contract before implementation. Specify: (1) INPUT: system prompt + message history + tool registry. (2) TURN: send to model; the model returns either final text or one or more tool calls. (3) EXECUTE: run each tool call in order, capture result or error. (4) FOLD: append tool results as tool-role messages, preserving call order and IDs. (5) TERMINATE: stop on explicit finish, max N turns, or K consecutive tool failures. Produce this as a short design doc with a state diagram and the exact message shapes you will use.
Project context
Copies the project goal, technical details, current step, previous progress, and checks so your AI tool understands what it is working on.
Expected after this step
A one-page loop contract with message shapes and termination rules.
Should not happen
- ✕Building an orchestration framework before a single loop works
- ✕Dropping or reordering tool results so the model loses causality
- ✕No termination condition - the agent loops forever on a stuck task
- ✕Swallowing tool errors instead of showing them to the model
Verify gate — prove this step works before continuing
Do not move on until every check is true. Add proof notes — a checked box alone is weak proof. Checks are manual by default; deploy/API probes live under “More verification tools” and do not auto-check boxes.
Do not continue if…
- !Building an orchestration framework before a single loop works
- !Dropping or reordering tool results so the model loses causality
- !No termination condition - the agent loops forever on a stuck task
- !Swallowing tool errors instead of showing them to the model
Repair path — if this step fails
Use the Repair Prompt when a verify gate fails. Loop: Detected → Diagnosed → Repair issued → Changed → Retested → Resolved
Show repair prompt textShow
The design jumped straight to classes and frameworks. Rewrite it as the sequence of messages exchanged in one turn - if you cannot write the transcript by hand, the design is not ready.
Your notes for this step
Definition of Done
Final route-level requirements. Manual checks — separate from per-step verify gates. Completing step gates does not auto-check these. Route completion is not a production-ready claim.