Release history
What changed, version by version. Four independently released products. Published versions come from npm, PyPI and immutable Skills tags—not from a source version bump.
Registry history checked 2026-10-07 . These are reviewed summaries, not exhaustive commit logs. Missing historical detail is stated rather than invented. Prereleases remain in the linked registries.
Upgrade the compatible set, not just a number. CLI 0.2.11 declares Ledger 0.4.0 and Benchmark 0.2.1 exactly, plus Skills ^2.1.1. Installing the CLI does not replace existing skills. Preserve customized instructions and historical run evidence.
Install and verify the current stable set → YYLO CLI · stable 0.2.11
YYLO CLI releases Release registry · Current documentation
v0.2.11 · Current stable2026-10-04
Coordinates Benchmark 0.2.1 and Skills ^2.1.1 for checklist evaluation; retains the exact Ledger 0.4.0 requirement. Fresh Simple initialization installs skills by default, with --no-skills as an explicit opt-out. Published version · Source / release evidence
2026-09-24
Requires Benchmark 0.2.0 and Skills ^2.1.0 for the breaking thin-runner lifecycle. The benchmark delegate remains transparent; old 0.1.x executables are rejected before dispatch. Published version · Source / release evidence
2026-09-23
Requires Ledger 0.4.0 for universal Record retrieval and storage-kind IDs. The companion skills requirement advances to ^2.0.4, including benchmark-yylo. Published version · Source / release evidence
2026-09-21
Moves autonomous task implementation outside the CLI: agents implement, test and commit; finish verifies delivery. Watch becomes an optional read-only observer. Adds release-bound Ledger wiki guidance, scoped task hydration and Record references in prompts. Published version · Source / release evidence
2026-09-19
Reuses authenticated schema parsing within controller-generation preparation. Retains the generation-refusal and compatible-skills safety work from the preceding release. Published version · Source / release evidence
2026-09-18
Terminates controller-generation refusals cleanly rather than continuing with incompatible runtime state. Carries compatible skill upgrades that preserve customized local copies and bounded runtime authentication. Published version · Source / release evidence
2026-09-16
Introduces the native Git delivery surface with separate Ledger projection recovery. Adds deterministic machine output, authenticated controller-generation adoption and Ledger 0.3.1 compatibility. Published version · Source / release evidence
2026-09-05
Stable baseline for bounded coding-agent workflows, managed scripts and independent Ledger/Benchmark delegation. Uses the earlier merge-queue lifecycle; do not apply current native-delivery instructions to this version. Published version · Source / release evidence
2026-08-27
Initial stable YYLO 0.2 release baseline for agent orchestration and task/workflow tooling. Historical release: use its own command help and source rather than assuming compatibility with current lifecycle documentation. Published version · Source / release evidence
YYLO Ledger · stable 0.4.0
YYLO Ledger releases Release registry · Current documentation
v0.4.0 · Current stable2026-09-23
Universal get/show resolves tasks, documents and artifacts without guessing their kind; bounded --content retrieves local/inline bytes. New IDs use task_, doc_ and artifact_ prefixes; existing identities remain valid. Collection JSON emits one tasks-and-summary object, including empty results. Published version · Source / release evidence
2026-09-21
Adds staging of release-bound package wiki revisions and reuse of legacy mappings. Includes the preceding native PDR document and approved task-revision binding work. Published version · Source / release evidence
2026-09-14
Stable native Record baseline for tasks, wiki, workflows and artifacts, with retained history and read-only local hosting. Provides preservation-first migration and explicit archive operations; storage and workflow execution remain separate. Published version · Source / release evidence
2026-08-27
Historical Git-native task-management baseline: statuses, dependency-aware work, responses and commit evidence. Native Record and universal retrieval instructions on this site target later versions. Published version · Source / release evidence
YYLO Benchmark · stable 0.2.1
YYLO Benchmark releases Release registry · Current documentation
v0.2.1 · Current stable2026-10-04
Adds frozen project/task criteria and evidence-backed pass/fail/unknown judgments. The runner computes loss = failed / total. Unknown evidence or evaluator errors produce null loss, not a guessed score. Later checklist revisions create separate evaluations; reporting exposes criteria/evaluator identities and comparability. Checklist skills and examples are distributed by yylo-skills 2.1.1, not bundled in the npm runtime. Published version · Source / release evidence
2026-09-24
Breaking thin-runner redesign: case draft/create, run, evaluate, report and append-only disqualify replace the old governed lifecycle. Supports independent task attempts and workflow prefixes, with later checks/judges over retained output and no candidate reruns. Old v1/v2 evidence is not migrated or reinterpreted. Trusted-host hygiene is not an enforced sandbox. Published version · Source / release evidence
2026-09-23
Standalone patch release of the pre-thin-runner implementation. The source release commit advances the package version; no separate behavioral change is asserted here. The 0.2.0 transition supersedes this lifecycle. Published version · Source / release evidence
2026-09-21
Patch release of the pre-thin-runner package, published alongside CLI 0.2.8. Retains historical governed-workflow semantics. Detailed behavioral release notes were not supplied; this page does not infer a change from the version bump. Published version · Source / release evidence
2026-09-16
Publishes the pre-thin-runner governed workflow CLI and retained evaluation lifecycle with CLI 0.2.3. Historical plan/recover/regrade/rejudge commands are not current 0.2.x instructions. Published version · Source / release evidence
2026-09-07
Initial stable Benchmark package for retained coding-agent evaluation evidence. Historical study evidence belongs to its pinned implementation; it is not a ranking or certification of the current runner. Published version · Source / release evidence
YYLO Skills · stable 2.1.1
YYLO Skills releases Release registry · Current documentation
v2.1.1 · Current stableImmutable tag; publication date not asserted
Adds frozen project/task checklists, evidence-based judgments, deterministic loss guidance and reusable examples to benchmark-yylo. Coordinates with CLI 0.2.11 and Benchmark 0.2.1; no separate checklist skill is introduced. Published version · Source / release evidence
Immutable tag; publication date not asserted
Updates benchmark-yylo for Benchmark 0.2.0's thin runner, independent evaluation and workflow-prefix comparisons. Clarifies trusted-host limits without claiming a sandbox or mandatory pilot ceremony. Published version · Source / release evidence
Immutable tag; publication date not asserted
Adds benchmark-yylo, completing the eight-skill catalog required by CLI 0.2.9. Its original study guidance is superseded by the 2.1.x thin-runner instructions. Published version · Source / release evidence
Immutable tag; publication date not asserted
Requires user-facing Record results to report the actual kind/profile, immutable ID and Ledger-returned slug. Documents universal retrieval and bounded content reads; missing fields must never be invented. Published version · Source / release evidence
Immutable tag; publication date not asserted
Clarifies optional preflight, finish-enforced admission and explicit tests/reviews outside native merge. Documents merge status/land/project and projection recovery. Published version · Source / release evidence
Immutable tag; publication date not asserted
Refines artifact evidence, PDR planning and single-task implementation contracts across the canonical skills. Keeps operational plans in durable Ledger artifacts instead of product documentation. Published version · Source / release evidence
Immutable tag; publication date not asserted
Introduces user-intent-first skill names ending in -yylo and grouped discovery. Provides canonical cross-agent procedures for Records, project understanding, planning and bounded task delivery. Published version · Source / release evidence
Immutable tag; publication date not asserted
Initial independently versioned canonical YYLO skills release. Legacy names and installation guidance are historical; use current compatibility rules when upgrading. Published version · Source / release evidence
Source changes and historical research Unpublished commits belong to their source repositories until a registry or immutable tag establishes publication. A published version does not prove every capability: the documentation retains exact artifact evidence for reviewed claims.
Benchmark transition notes and earlier studies keep their original evidence dates. Later package releases do not rewrite their findings.