Loop Sdd Cycle
Use to run a bounded spec, tests, implementation, and verify cycle that stops on green, on no diff, or on a repeated identical failure.
Install
$ agentstack add skill-jsuvic-agent-profile-loop-sdd-cycle ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-jsuvic-agent-profile-loop-sdd-cycle) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
Loop: SDD Cycle
Advance one approved spec slice through spec, tests, implementation, and verification in bounded iterations. Each iteration takes the smallest slice that keeps the spec and its tests in step.
Loop Steps
- Confirm the slice against the approved spec; run
sdd-changefor the spec-first discipline. - Add or update a focused failing test for the slice; run
tdd-changefor the red/green discipline. - Implement the smallest change that satisfies the failing test and the spec.
- Verify the slice against the spec and acceptance criteria; run
final-reviewbefore handoff.
Max Iterations
The loop runs at most 3 iterations. When it reaches 3 iterations without meeting a stop condition, it stops unconditionally and reports the unfinished state and the outstanding work; it never raises the bound to keep going.
Stop Conditions
Stop the loop as soon as any of these holds:
- The relevant tests and checks are green.
- An iteration produces no diff.
- The same failure repeats identically across two consecutive iterations.
Approval Gate
- Get explicit human approval before any write, commit, or destructive step in each iteration.
- The loop never self-approves, never continues past the iteration bound, and never runs destructive commands on its own authority.
- Pause and surface the state whenever approval is missing.
Safety
- Do not upload source code.
- Do not read or print secrets.
- APC does not run this loop; a human or agent follows these instructions and remains in control.
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: jsuvic
- Source: jsuvic/agent-profile
- License: Apache-2.0
- Homepage: https://agent-profile.com
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.