# opchain

> opchain is a set of interconnected Claude Code / MCP skills that form a software-development pipeline: concept → spec → design → build → ship → operate. Each skill is a SKILL.md the model reads and follows. You invoke a skill by name; skills read each other's checkpoints when you chain them, so context carries forward across a session you drive.

Install the skills into `.claude/skills/`, or point any MCP client (Codex, Claude Desktop, …) at the hosted server at https://opchain.dev/mcp.

## Skills

- [OC · Agent Forge](https://opchain.dev/docs/oc-agent-forge/SKILL.md): Scaffold Claude Agent SDK apps — subagent topology, tool budgets, harness loops, agent eval. Tri-agent.
- [OC · API Developer](https://opchain.dev/docs/oc-api-dev/SKILL.md): First-party API design, OpenAPI, versioning, SDKs. v1.2 files breaking-change + deprecation tickets; drift on PR.
- [OC · App Architect](https://opchain.dev/docs/oc-app-architect/SKILL.md): Idea → spec → design → build → launch in one skill. Reads PM tickets and writes sprints back via PM-MCP.
- [OC · Bug Check](https://opchain.dev/docs/oc-bug-check/SKILL.md): Pre-commit QA gate — fast checks on every commit. v1.2 attaches the failure report to the linked PM ticket on block.
- [OC · Checkpoint Protocol](https://opchain.dev/docs/oc-checkpoint-protocol/SKILL.md): Session persistence across skills — JSON checkpoint contract + status/next/doctor/validate tooling, catches drift.
- [OC · Claude API](https://opchain.dev/docs/oc-claude-api/SKILL.md): Build, debug, and migrate Claude API apps — model routing, prompt caching, tool use, version-migration playbooks.
- [OC · Code Auditor](https://opchain.dev/docs/oc-code-auditor/SKILL.md): Auditor → Fixer → Verifier quality loop. v1.2 posts findings to the linked PM ticket; HIGH+ filed as sub-tickets.
- [OC · Compliance Ops](https://opchain.dev/docs/oc-compliance-ops/SKILL.md): Standing control register + audit-ready evidence bundles at deploy/release time. SOC 2 / HIPAA / GDPR.
- [OC · Cost Ops](https://opchain.dev/docs/oc-cost-ops/SKILL.md): LLM cost attribution per skill phase, budget gates in checkpoints, and model-tier routing recommendations.
- [OC · Dash Forge](https://opchain.dev/docs/oc-dash-forge/SKILL.md): Dashboards, BI, dense data — design spec + React prototype. v1.2 attaches the handoff bundle to the linked PM ticket.
- [OC · Data Ops](https://opchain.dev/docs/oc-data-ops/SKILL.md): Data-pipeline design + build: ingestion patterns, transformation layers, dbt, observable data contracts.
- [OC · Deploy Ops](https://opchain.dev/docs/oc-deploy-ops/SKILL.md): Audit gate → staging → production → monitor. Creates deploy tickets and updates linked PM tickets per env.
- [OC · Docs Forge](https://opchain.dev/docs/oc-docs-forge/SKILL.md): Documentation generator for every PR: PR body, PR comments, README/catalog docs, product docs, changelog and ADR upkeep.
- [OC · Evolve](https://opchain.dev/docs/oc-evolve/SKILL.md): Task-evaluated behavior changes with externally reviewed adoption.
- [OC · Fleet Ops](https://opchain.dev/docs/oc-fleet-ops/SKILL.md): Provision and operate containers across self-managed infra — k8s/Nomad/Compose/VMs. Terraform when it fits, not always.
- [OC · Git Ops](https://opchain.dev/docs/oc-git-ops/SKILL.md): Branch, commit, PR, sync, and release-tag workflows. `/oc-git-release` closes the release ledger; PM-aware (v1.3+).
- [OC · Hindsight](https://opchain.dev/docs/oc-hindsight/SKILL.md): Source-grounded operational memory with signed promotion and read-time validation.
- [OC · Integrations Engineer](https://opchain.dev/docs/oc-integrations-engineer/SKILL.md): Third-party APIs, OAuth, webhooks. v1.2 adds PM-tool MCP integration patterns (Linear / Jira / GitHub Issues).
- [OC · Migration Ops](https://opchain.dev/docs/oc-migration-ops/SKILL.md): Change the engine mid-flight — DB, framework, auth, platform. v1.2 mirrors the plan as parent + step children.
- [OC · Modularize Ops](https://opchain.dev/docs/oc-modularize-ops/SKILL.md): Decompose a monolith with provably zero loss — golden fixtures from real data as the oracle. Willing to say don't.
- [OC · Monitoring Ops](https://opchain.dev/docs/oc-monitoring-ops/SKILL.md): Post-deploy observability — uptime, errors, alerts, incidents. Opens PM incident tickets when alerts fire.
- [OC · Orchestrator](https://opchain.dev/docs/oc-orchestrator/SKILL.md): Pipeline coordinator — registry, status, routing. v1.2 reads `pm_refs` across skills; routes by ticket id.
- [OC · Prompt Ops](https://opchain.dev/docs/oc-prompt-ops/SKILL.md): Prompt-as-code — versioning, eval datasets, regression and drift detection for LLM prompts.
- [OC · QA Ops](https://opchain.dev/docs/oc-qa-ops/SKILL.md): Test-pyramid design: coverage strategy, contract-test planning, load-test planning. Strategy, not execution.
- [OC · RAG Forge](https://opchain.dev/docs/oc-rag-forge/SKILL.md): Design and build RAG systems — vector DB choice, embeddings, chunking, hybrid search, retrieval eval. Tri-agent.
- [OC · Release Ops](https://opchain.dev/docs/oc-release-ops/SKILL.md): Plan, draft, bump, announce, ship a release. Closes the loop from sprints to /changelog to oc-git-ops to oc-deploy-ops.
- [OC · Repo Ops](https://opchain.dev/docs/oc-repo-ops/SKILL.md): Repository hygiene and PR readiness gate. Ensures docs, generated files, git state, catalogs, and cleanup are PR-ready.
- [OC · Reverse Spec](https://opchain.dev/docs/oc-reverse-spec/SKILL.md): Turn existing code into pipeline-ready specs. v1.2 mirrors discovered scope to the PM tool as parent + children.
- [OC · Scale Ops](https://opchain.dev/docs/oc-scale-ops/SKILL.md): Load, caching, capacity planning. v1.2 posts load-test reports to the PM ticket; HIGH risks as sub-tickets.
- [OC · Security Auditor](https://opchain.dev/docs/oc-security-auditor/SKILL.md): Threat modeling, OWASP hardening, attack-surface review. v1.2 files CRITICAL findings as PM incident tickets.
- [OC · Security Hardening](https://opchain.dev/docs/oc-security-hardening/SKILL.md): Remediation operator: execute hardening fixes and stand the per-deploy hardening gate. Auditor finds; this fixes.
- [OC · Signal Forge](https://opchain.dev/docs/oc-signal-forge/SKILL.md): Question → trustworthy metric: instrument, harvest, prove it answers the question, then wire it. Backend only.
- [OC · Stack Forge](https://opchain.dev/docs/oc-stack-forge/SKILL.md): Stack decisions, Cloudflare patterns, typed pipeline. v1.2 records the chosen stack on the linked PM ticket as an ADR.
- [OC · Telemetry Ops](https://opchain.dev/docs/oc-telemetry-ops/SKILL.md): Opt-in, local-first usage metering to .checkpoints/usage.sqlite; anonymized local aggregate export.
- [OC · Update](https://opchain.dev/docs/oc-update/SKILL.md): Update repo-local Opchain skills and helpers in one command, preserving telemetry and checkpoints.
- [OC · UX Engineer](https://opchain.dev/docs/oc-ux-engineer/SKILL.md): Design Planner → Generator → Evaluator. Posts eval scores to the PM ticket; a11y as sub-tickets.

## Docs

- [Skill catalog (JSON)](https://opchain.dev/skills.json): machine-readable list of every skill
- [MCP server card](https://opchain.dev/.well-known/mcp.json): how to connect over MCP
- [Architecture](https://opchain.dev/architecture): how the skills chain into a pipeline
- [Install guide](https://opchain.dev/install): plugin, drop-in install + MCP setup
- Claude Code plugin: `/plugin marketplace add asfbay-bit/opchain-skills` then `/plugin install opchain` (adds the commit gate + hooks the zip does not carry)
- [Skill bundle (zip)](https://opchain.dev/opchain-skills.zip): every skill in one download
- [License](https://opchain.dev/LICENSE): Apache-2.0 — every download above ships the same terms