Story Implementation Orchestrator

Story Implementation Orchestrator

Coordinate the story-to-plan workflow without duplicating the detailed instructions from the component skills.

This is a companion process overlay. Pair it with the component story skills when the user wants end-to-end preparation before implementation.

When To Use

• run the full pipeline from rough idea to actionable implementation plan
• prepare a story for a coding agent or human before code changes start
• choose which story-prep stages can be skipped because their outputs already exist
• produce a single handoff containing story, repo context, and implementation plan

Not For

• direct implementation after a plan already exists
• story clarification only; use user-story-clarifier
• repo scouting only; use story-repo-scout
• model-aware planning only; use story-implementation-planner
• security review, broad architecture review, or whole-repo analysis

Pipeline

1. Inspect input. Classify which stages already exist in the input

(single story card? split story set? Repo Context? Implementation Plan?). Run the matching readiness check on each. Run only the missing or failing stages. This is the orchestrator's main reason to exist: do not re-run a stage whose output already passes its readiness check.

1. Clarify. Use user-story-clarifier unless the single-story or split-set

readiness check passes.

1. Select slice. If clarification returns a split story set, plan only the

first shippable slice by default unless the user asks for all slices. Materialize the selected slice as the active story card before scouting: copy relevant shared context, dependencies, assumptions, open questions, and deferred-work boundaries into the slice so downstream stages do not need to infer them from the full split set.

1. Scout. Use story-repo-scout unless the repo context readiness check

passes.

1. Plan. Use story-implementation-planner with the story card, repo

context, and target executor, unless the plan readiness check passes.

1. Review. Apply the Final Quality Gate (see below).
2. Handoff. Return the final preparation packet. Do not implement code.

Resumption Examples

• Story-only input. Run scout + plan; skip clarify if the story passes

its readiness check.

• Story + Repo Context, no plan. Run plan only.
• Old plan + new story. Re-scout if the named files no longer exist or

the story's behavior changed; otherwise re-plan against existing context.

• Full packet, user wants tweak. Skip all stages; surface targeted edit.
• Story marked Blocked. Stop. Do not scout or plan against a blocked

story; surface the blocker first.

Readiness Checks

Each check has two tiers: Presence checks are mechanical (grep against the upstream template's section names); Quality checks require semantic judgment. Skip a stage only when both tiers pass.

Single story ready — user-story-clarifier template:

• Presence: Status:, User Story (or job-story / task-brief) block,

Acceptance Criteria, Out of Scope, Dependencies and Assumptions, Open Questions, Validation Notes are all present.

• Quality: Status: Ready; acceptance criteria are observable pass/fail (no

unfalsifiable adjectives); no Anti-Pattern phrasing per user-story-clarifier.

Split story set ready — user-story-clarifier split template:

• Presence: top-level Status: Split Candidate, Split Story Set, `Shared

Context, Slice Order, Story Slices, and Deferred Work; each slice has Status, User Story, Acceptance Criteria, Out of Scope, Dependencies, and Validation Notes`.

• Quality: the first shippable slice is clearly marked and has

Status: Ready; shared assumptions and deferred work are preserved; no slice silently merges unrelated personas, workflows, or dependency boundaries.

Repo context ready — story-repo-scout template:

• Presence: Workspace (when multi-workspace), Search Handles,

Relevant Files table with >=1 row, Tests and Validation Targets, Likely Unrelated / Do Not Touch, Open Repo Questions.

• Quality: every Relevant Files row has Evidence and Confidence filled;

no Anti-Pattern files (filename-only, generated, vendored); confidence values match the High/Medium/Low scale; terminology conflicts surfaced as open questions, not silently renamed; Likely Unrelated / Do Not Touch is populated when boundaries were found, or says None identified when no boundary was found.

Plan ready — story-implementation-planner template:

• Presence: Plan Status:, Target Executor, Size, Goal, Files,

Steps, Validation, Handoff Notes. First Action block present when target executor is local-small, optional for agent profiles, and absent for human.

• Quality: Plan Status: Ready (not Needs Inputs or Blocked); every

path in Files appears in upstream Repo Context; Validation names a runnable command, probe, or named acceptance check; no Anti-Pattern phrases (TBD, handle edge cases, add tests, refactor X, polish).

If any tier fails, run that stage instead of guessing.

Preparation Packet Contract

The final packet must preserve these minimum fields when known:

• Story: status, title, actor or executor, goal, behavior, acceptance criteria,

out of scope, dependencies or assumptions, and open blockers.

• Repo context: search handles, relevant files with evidence and confidence,

likely entry points, tests or validation commands, do-not-touch boundaries or None identified, and open repo questions.

• Plan: target executor, first action when required or useful, ordered steps,

dependencies, risks or blockers, validation, rollback, and handoff notes.

If a required field is unknown, mark it as blocked or unavailable instead of silently omitting it.

Shared Vocabulary

Single source of truth for all four pipeline skills:

• Story Status (user-story-clarifier): Ready | Needs Clarification

| Split Candidate | Blocked.

• Confidence (story card + repo scout files): High | Medium | Low,

with a one-line note naming what would raise it.

• Plan Status (story-implementation-planner): Ready | Needs Inputs

| Blocked.

When a packet uses inconsistent labels, normalize to these names before handoff.

Orchestration Rules

• Keep stage outputs compact and appendable.
• Ask only questions that block the next stage or materially change the story.
• Question cadence. user-story-clarifier caps clarifying questions at

≤3. When orchestrated, surface them one at a time within that budget; stop asking once an answer removes the remaining questions. If code or docs can answer a question, inspect those first.

• For split story sets, preserve the remaining slices as deferred work instead

of folding them into the first implementation plan.

• When selecting a split slice, do not pass the whole split set as the scouting

input. Pass one materialized story card for the active slice and keep the other slices in deferred work or handoff notes.

• Preserve unresolved assumptions across stages instead of smoothing them out.
• Default the target executor to standard-agent when the user is unsure.
• Use local-small planning when the user names a smaller local model such as a

Qwen-class 20B-30B model.

• Route to implementation skills only after the preparation packet exists.
• Stop before planning or implementation when a blocker would force guessing.

Error Recovery & Loopback

The pipeline is not strictly one-way. When a downstream stage contradicts an upstream assumption, loop back to the earliest affected stage and preserve the already-validated sections.

Contradiction triggers:

• Repo scouting shows a term, API, or file the story assumes does not exist.
• Repo scouting reveals an existing behavior that conflicts with acceptance

criteria.

• Planning shows the story is too large for the chosen executor profile.
• Planning exposes an unresolved dependency that should have been a blocker.

Loopback rules:

1. Mark the affected upstream stage as failed in its readiness check.
2. Preserve the rest of the packet; do not discard scouting output just because

the story changed.

1. Re-run only the failed stage with the new context appended.
2. Cap total loopbacks at 2 per stage before surfacing to the user with a

Blocked On summary instead of re-trying silently.

Mid-pipeline interruption: If the user provides new requirements, constraints, or scope changes while a stage is running, treat it as a fresh input. Re-run readiness checks from stage 0 against the accumulated packet plus the new input. Do not append unverified assumptions to an already-passed stage.

Final Output

Use this structure by default:

## Story Card
Clarified story or reference to existing story.

## Repo Context
Relevant files, tests, confidence, and open repo questions.

## Implementation Plan
Model-aware ordered plan, risks, validation, and handoff notes.

If a blocker prevents a complete packet, output the completed sections plus a short Blocked On section.

Final Quality Gate

Reject the packet at handoff if any of the following holds:

• TBD, ???, or unresolved placeholder steps in the plan.
• Plan steps without verb-first phrasing (e.g., Authentication module is not

a step; Add token expiry check to auth middleware is).

• Plan references a file path not present in Repo Context.
• Validation section missing or non-runnable (no command, probe, or named

acceptance check).

• Story Status is Blocked but the packet still contains a non-empty plan.
• Plan Status is Ready but Risks and Blockers lists unresolved blockers.
• Agent plan exceeds 12 top-level steps or tracks, or local-small exceeds 8

steps, without explicit user acceptance and a split rationale.

• Story-language and repo-language conflict was flagged during scouting and

not resolved or reframed in the plan.

• Migration / flag / rollout coverage missing when the change touches

persisted data, schema, wire format, or public API (per planner Planning Rules).

Warn and acknowledge (do not block handoff, but surface explicitly):

• Agent plan has 9-12 top-level steps or tracks, or local-small has 7-8

steps.

• Repo Context lists more than 15 files.
• More than 2 open questions remain across story and repo context combined.
• No Do Not Touch boundaries were identified.
• A Low confidence file appears in the plan's critical path without a

contingency step.

When warning, name the condition and state the risk. Confirm the user still wants to proceed before downstream routing only when the warning materially changes implementation risk or scope.

When rejecting, name the failing gate(s) and re-run the relevant stage.

Downstream Handoff

After the packet passes the Final Quality Gate, route the executor to the matching implementation skill set:

• Default for repo-owned code changes: project-core-dev.
• Language overlay: coding-guidance-go, coding-guidance-python,

coding-guidance-cpp, coding-guidance-bash, coding-guidance-qt, or coding-guidance-go-tui based on the workspace named in Repo Context.

• Systems overlay: backend-systems-guidance (or backend-guidance for

thin handler work), ui-guidance (or ui-design-guidance for redesign- heavy work) when the story implies UI changes.

• Documentation/config overlay: documenter for docs-only implementation

plans, and project-config-and-tests when config behavior or deterministic test coverage is the primary concern.

• Workflow overlay: tester-mindset when validation design, risk coverage, or

acceptance-oracle quality is central to the story.

• Process overlay: security only when security is the primary concern (do

not auto-route on every backend or auth change).

Resources

• [references/story-to-plan-packet-example.md](references/story-to-plan-packet-example.md)

shows a compact complete packet shape.

Examples

• Run the full story-to-plan pipeline on this rough feature idea. -> clarify,

scout, then plan.

• Use the story, repo scout, and planning workflow before implementation. ->

orchestrate all three stages and stop before coding.

• Create a coding-agent-ready handoff from this ticket. -> run missing stages

and return the final packet.

• Implement this plan in code. -> use implementation skills instead.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: n-n-code
• Source: n-n-code/n-n-code-skills
• License: MIT

Install and usage instructions live in the source repository linked above.