# Example — Single bug fix

## User input

```
/agent-goal-skill the login page throws 500 when email has uppercase. fix it.
```

## Shaped output

````
```
/goal

# Goal
Fix the 500 error on /login route when the submitted email contains uppercase characters.

# Context
- Reported symptom: HTTP 500 on POST /login with email='User@Example.com'
- Likely cause: <TODO: user confirms — case-sensitive email lookup OR JWT subject mismatch>
- Repo: <TODO: user fills in>
- Test suite: <TODO: user fills in — likely `npm test` or `bun test`>
- Reproduction: `curl -X POST <local-url>/login -d 'email=User@Example.com&password=...'`

# Constraints
- Fix ingestion (normalize on write/read), not output formatting
- Do NOT change the password hashing or session-cookie shape
- Do NOT skip existing tests
- Atomic commit, one PR

# Done when
1. `curl -X POST <url>/login -d 'email=User@Example.com&password=...'` returns 200 or 401, not 500
2. New test case covers uppercase-email login
3. `npm test` (or equivalent) exits 0
4. No lint errors introduced

# On block
FAIL FAST. If reproduction can't be confirmed locally, write the question to ~/.pending.md and exit. Non-interactive run.

Token budget: 500K
```

**Sandbox:** `workspace-write`
**Reasoning effort:** `medium`
**Caveats:** Reproduction URL + test command are TODO — fill in before dispatching.
````

## What the shaper did

- Lifted "fix it" → verifiable outcome ("returns 200 or 401, not 500")
- Marked unknown paths as `<TODO>` instead of inventing them
- Added Root-Cause-at-Ingestion guidance in Constraints ("fix ingestion, not output")
- Sized token budget to single-bug scope (500K)
- Picked `workspace-write` sandbox (single repo, code edit)