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ruflo-plugin-creator plugin contract — pinning, scaffold-the-canonical-contract, MCP-drift warnings, smoke as contract

plugins/ruflo-plugin-creator/docs/adrs/0001-plugin-creator-contract.md

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Context

ruflo-plugin-creator (v0.1.0) — meta-plugin that scaffolds new Claude Code plugins. 1 agent + 2 skills + 1 command.

This plugin is uniquely positioned: every new plugin scaffolded by it inherits whatever contract the scaffolder produces. ADR-0001 must therefore do two things:

  1. Adopt the same plugin contract every other plugin in this session adopted (pinning, namespace coordination, smoke as contract, sibling-ADR cross-references).
  2. Update the scaffolding output so newly-created plugins are born with the contract — not retrofitted later.

Drift fixed

The create-plugin skill mentioned "19 AgentDB controllers" — a stale count that ruflo-agentdb ADR-0001 §"Today's ruflo-agentdb" declared mythical (real: 15 agentdb_* MCP tools, 29 ControllerName entries). Fixed in this pass.

Decision

1. Adopt the contract for this plugin

  • Add this ADR (Proposed).
  • README augment: Compatibility (pin v3.6); Namespace coordination (no AgentDB writes — pure scaffolding plugin); Verification + Architecture Decisions sections.
  • Bump 0.1.0 → 0.2.0. Keywords add mcp, scaffolding, contract-bootstrap.
  • scripts/smoke.sh — 10 structural checks.

2. Update the scaffolding output

The create-plugin skill is updated to scaffold:

  • docs/adrs/0001-<name>-contract.md (Proposed)
  • scripts/smoke.sh (8+ structural checks)
  • README sections: Compatibility, Namespace coordination, Verification, Architecture Decisions
  • A "MCP-tool drift to avoid" section warning new authors about the four real bugs the loop has been fixing across the family:
    • embeddings_embed does not exist — use embeddings_generate
    • agentdb_hierarchical-* ignores namespace arg (routes by tier) — use memory_* for namespaced reads/writes
    • agentdb_pattern-* ignores namespace arg (routes through ReasoningBank)
    • pattern (singular) ≠ patterns (plural) — different reserved namespaces

3. Smoke contract

10 checks:

  1. plugin.json declares 0.2.0 with new keywords.
  2. Both skills + agent + command present with valid frontmatter.
  3. create-plugin skill scaffolds ADR, smoke, README contract sections.
  4. create-plugin skill includes the MCP-tool drift warnings.
  5. create-plugin skill no longer claims "19 AgentDB controllers" (regression check).
  6. README pins to @claude-flow/cli v3.6.
  7. README has Architecture Decisions section.
  8. ADR-0001 exists with status Proposed.
  9. validate-plugin skill present.
  10. No skill grants wildcard tool access.

Consequences

Positive:

  • Future scaffolds inherit the canonical contract automatically. The retrofit work the loop is doing right now becomes unnecessary for new plugins.
  • The four MCP-tool drift bugs we keep finding are now warnings in the scaffolder.
  • Plugin joins the cadence.

Negative:

  • Existing scaffolds are not updated by this ADR — they get retrofitted via the loop's per-plugin pass (already mostly complete).

Verification

bash
bash plugins/ruflo-plugin-creator/scripts/smoke.sh
# Expected: "10 passed, 0 failed"
  • plugins/ruflo-agentdb/docs/adrs/0001-agentdb-optimization.md — namespace convention + "19 controllers" myth fix
  • plugins/ruflo-cost-tracker/docs/adrs/0001-cost-tracker-contract.md — namespace-routing bug class
  • plugins/ruflo-knowledge-graph/docs/adrs/0001-knowledge-graph-contract.md — embeddings_embed rename
  • plugins/ruflo-ruvector/docs/adrs/0001-pin-ruvector-0.2.25.md — pinning + smoke-as-contract precedent