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FlowMCP v4

Kanban Data Contract (superseded)

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Conformance language (MUST/SHOULD/MAY) follows BCP 14 [RFC2119]/[RFC8174] as defined in 00-overview.md.

Why this chapter is superseded

Section titled “Why this chapter is superseded”

The earlier 1.1.0 Kanban data contract exposed a per-phase status response (P1–P7, S1–S4) with a single/selection lane separation. The 2.0.0 break replaces this with a single derived rollup file per namespace and per selection: index.json. The rollup carries the per-node status, the per-member resolution, the frozen lock snapshot, and the aggregate grade in one place. There is no longer a separate phase-status response surface, and the P*/S* phase identifiers are replaced by the eleven grading areas (see 23-index-json.md and the area chapters).

Consumers MUST read status from index.json. The phase-status response described in 1.1.0 and its annex schema are no longer normative.

Salvaged principles (still normative)

Section titled “Salvaged principles (still normative)”

Two rules from the former Kanban contract survive the break and are carried forward into the index.json model. They are restated here for traceability and are defined normatively in 23-index-json.md.

Audit-trail rule — never delete, newest is current

Section titled “Audit-trail rule — never delete, newest is current”

Grading entries MUST NOT be deleted or overwritten. A re-grading produces a new grading file alongside the previous one; the previous file is preserved as an audit trail. When determining the current status of a primitive, consumers MUST use the newest entry (resolved by timestamp; the rollup uses resolveLatest). Only the derived index.json is rewritten on rebuild — never the underlying grading entries or source snapshots.

Irreversible veto — terminal status rejected

Section titled “Irreversible veto — terminal status rejected”

A categorical veto produces the terminal node status rejected. This status is irreversible: a primitive in rejected MUST NOT be moved back to any other status by editing or deleting its grading entry. A veto can only be lifted by a fully new evaluation that produces a new grading entry; the original veto entry remains in the audit trail. The four closed veto triggers (malicious-module, api-key-domain-mismatch, illegal-content, ai-security-veto) are defined in 09-security-and-development.md.

Cross-References

Section titled “Cross-References”
Section titled “Related”