Publish DCP v1 conformance corpus (25 cases: 7 accept / 18 reject) + dataset card

README.md

@@ -0,0 +1,72 @@
+---
+license: apache-2.0
+language:
+- en
+pretty_name: DCP v1 Conformance Corpus
+tags:
+- json-schema
+- validation
+- conformance
+- ai-agents
+- multi-agent
+- agent-protocols
+- interoperability
+size_categories:
+- n<1K
+configs:
+- config_name: default
+  data_files: cases.jsonl
+---
+
+# DCP v1 Conformance Corpus
+
+The official, language-neutral conformance test corpus of the **[Development Coordination Protocol (DCP)](https://devcopro.org)** — an open, vendor-neutral vocabulary for exchanging *project-coordination events* (a task completed, a decision recorded, a finding raised…) between AI agents and humans.
+
+A DCP implementation, in **any language**, is conformant when it **accepts every `accept` case and rejects every `reject` case** in this corpus, validating each payload as a `DcpMessage` against the [DCP v1 JSON Schemas](https://schemas.devcopro.org/v1/dcp-message.schema.json) (JSON Schema 2020-12) **plus** the one cross-field rule schemas cannot express: `message_type` must equal `<body.entity_type>.<body.verb>` — on conflict, the body wins and the message is malformed.
+
+## Contents
+
+- **`cases.jsonl`** — all 25 cases (7 accept / 18 reject), one JSON object per line:
+  `case`, `file`, `expect` (`accept`/`reject`), `schema`, `note` (what the case probes), and the full `payload`.
+- **`corpus/`** — the same corpus in its original layout: `valid/`, `invalid/`, and `manifest.json` (the machine-readable case list an implementation iterates).
+
+## Quick start
+
+```python
+from datasets import load_dataset
+
+cases = load_dataset("DevCoPro/dcp-conformance-corpus", split="train")
+for case in cases:
+    result = my_validator(case["payload"])          # your implementation
+    assert result.ok == (case["expect"] == "accept"), case["case"]
+```
+
+Or language-neutral, straight from the original layout: iterate `corpus/manifest.json`, validate each `file` against the schema base `https://schemas.devcopro.org/v1/`, and compare with `expect`.
+
+## What DCP is (and deliberately is not)
+
+DCP standardizes **what changed in a project** — over a closed set of 8 coordination entities (Project, Task, Dependency, ArchitectureImpact, Decision, ReviewRequest, Finding, Milestone) with an open verb vocabulary. Its prime directive: **"DCP carries no trust; it describes project-state changes only."** It never authenticates, routes, plans, schedules, or executes — those belong to other layers, which is exactly why it composes with the rest of the 2026 agent-protocol stack:
+
+- **[CloudEvents binding](https://devcopro.org/how-to/dcp-over-cloudevents/)** (normative) — a `DcpMessage` rides unchanged as CE `data`.
+- **[A2A community extension](https://devcopro.org/a2a/dcp/v1/)** — DCP events in an A2A DataPart.
+- MCP connects agents to tools; DCP is the payload vocabulary for the coordination conversation itself.
+
+## Links
+
+- Spec & docs: **https://devcopro.org** · [Specification](https://devcopro.org/spec/) · [Quickstart](https://devcopro.org/quickstart/)
+- Source repository: **https://github.com/TokonoMix/development-coordination-protocol** (Apache-2.0 / CC-BY-4.0)
+- Canonical schemas: https://schemas.devcopro.org/v1/dcp-message.schema.json (offline bundle + SHA256SUMS available)
+
+## Citation
+
+```bibtex
+@misc{dcp-conformance-corpus,
+  title   = {DCP v1 Conformance Corpus},
+  author  = {{InterIP Networks}},
+  year    = {2026},
+  url     = {https://huggingface.co/datasets/DevCoPro/dcp-conformance-corpus},
+  note    = {Conformance test corpus for the Development Coordination Protocol v1.0.0-draft}
+}
+```
+
+Maintained by Mesut Kalkan (founding maintainer, InterIP Networks). Licensed Apache-2.0, same as the DCP schemas and examples.

cases.jsonl

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+{"case": "minimal-task-created", "file": "valid/minimal-task-created.json", "expect": "accept", "schema": "dcp-message", "note": "Only required fields present.", "payload": {"dcp_version": "1.0", "message_id": "msg_min0001", "message_type": "task.created", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_min0001", "entity_type": "task", "verb": "created", "entity_id": "task_x", "entity": {"id": "task_x", "project_id": "project_x", "title": "A task", "status": "todo"}}}}
+{"case": "event-only-refs", "file": "valid/event-only-refs.json", "expect": "accept", "schema": "dcp-message", "note": "Event payload satisfied by refs alone.", "payload": {"dcp_version": "1.0", "message_id": "msg_refs001", "message_type": "task.updated", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_refs001", "entity_type": "task", "verb": "updated", "entity_id": "task_x", "refs": [{"rel": "relates_to", "ref": "task_y"}]}}}
+{"case": "event-only-delta", "file": "valid/event-only-delta.json", "expect": "accept", "schema": "dcp-message", "note": "Event payload satisfied by delta alone.", "payload": {"dcp_version": "1.0", "message_id": "msg_delta01", "message_type": "task.status_changed", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_delta01", "entity_type": "task", "verb": "status_changed", "entity_id": "task_x", "delta": {"status": {"from": "todo", "to": "in_progress"}}}}}
+{"case": "unknown-verb-tolerated", "file": "valid/unknown-verb-tolerated.json", "expect": "accept", "schema": "dcp-message", "note": "Unknown verb 'archived' must be tolerated (forward-compat).", "payload": {"dcp_version": "1.0", "message_id": "msg_uverb01", "message_type": "task.archived", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_uverb01", "entity_type": "task", "verb": "archived", "entity_id": "task_x", "refs": [{"rel": "relates_to", "ref": "project_x"}]}}}
+{"case": "unknown-status-tolerated", "file": "valid/unknown-status-tolerated.json", "expect": "accept", "schema": "dcp-message", "note": "Unknown status 'on_hold' must be tolerated (forward-compat).", "payload": {"dcp_version": "1.0", "message_id": "msg_ustat01", "message_type": "task.snapshot", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_ustat01", "entity_type": "task", "verb": "snapshot", "entity_id": "task_x", "entity": {"id": "task_x", "project_id": "project_x", "title": "A task", "status": "on_hold"}}}}
+{"case": "extensions-namespaced", "file": "valid/extensions-namespaced.json", "expect": "accept", "schema": "dcp-message", "note": "Namespaced x- extensions on envelope and entity.", "payload": {"dcp_version": "1.0", "message_id": "msg_ext0001", "message_type": "project.snapshot", "issued_at": "2026-06-29T10:00:00Z", "extensions": {"x-tokonomix": {"council_run_id": "run_123"}}, "body": {"event_id": "evt_ext0001", "entity_type": "project", "verb": "snapshot", "entity_id": "project_x", "entity": {"id": "project_x", "name": "P", "status": "active", "extensions": {"x-github": {"issue": 7}}}}}}
+{"case": "envelope-extra-field", "file": "invalid/envelope-extra-field.json", "expect": "reject", "schema": "dcp-message", "note": "Unknown top-level field violates additionalProperties:false on the envelope core.", "payload": {"dcp_version": "1.0", "message_id": "msg_bad0001", "message_type": "task.created", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_min0001", "entity_type": "task", "verb": "created", "entity_id": "task_x", "entity": {"id": "task_x", "project_id": "project_x", "title": "A task", "status": "todo"}}, "foo": "bar"}}
+{"case": "envelope-missing-message-id", "file": "invalid/envelope-missing-message-id.json", "expect": "reject", "schema": "dcp-message", "note": "message_id is required.", "payload": {"dcp_version": "1.0", "message_type": "task.created", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_min0001", "entity_type": "task", "verb": "created", "entity_id": "task_x", "entity": {"id": "task_x", "project_id": "project_x", "title": "A task", "status": "todo"}}}}
+{"case": "message-type-mismatch", "file": "invalid/message-type-mismatch.json", "expect": "reject", "schema": "dcp-message", "note": "message_type must equal '<entity_type>.<verb>'.", "payload": {"dcp_version": "1.0", "message_id": "msg_mt0001", "message_type": "task.updated", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_min0001", "entity_type": "task", "verb": "created", "entity_id": "task_x", "entity": {"id": "task_x", "project_id": "project_x", "title": "A task", "status": "todo"}}}}
+{"case": "event-empty-payload", "file": "invalid/event-empty-payload.json", "expect": "reject", "schema": "dcp-message", "note": "Event must carry at least one of entity/delta/refs.", "payload": {"dcp_version": "1.0", "message_id": "msg_empty01", "message_type": "task.updated", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_empty01", "entity_type": "task", "verb": "updated", "entity_id": "task_x"}}}
+{"case": "bad-id-pattern", "file": "invalid/bad-id-pattern.json", "expect": "reject", "schema": "dcp-message", "note": "entity_id must match the opaque id pattern.", "payload": {"dcp_version": "1.0", "message_id": "msg_badid01", "message_type": "task.updated", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_refs001", "entity_type": "task", "verb": "updated", "entity_id": "Task 42", "refs": [{"rel": "relates_to", "ref": "task_y"}]}}}
+{"case": "non-namespaced-extension", "file": "invalid/non-namespaced-extension.json", "expect": "reject", "schema": "dcp-message", "note": "Extension keys must match '^x-<vendor>$'.", "payload": {"dcp_version": "1.0", "message_id": "msg_ns0001", "message_type": "task.created", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_min0001", "entity_type": "task", "verb": "created", "entity_id": "task_x", "entity": {"id": "task_x", "project_id": "project_x", "title": "A task", "status": "todo"}}, "extensions": {"foo": {}}}}
+{"case": "bad-extension-key", "file": "invalid/bad-extension-key.json", "expect": "reject", "schema": "dcp-message", "note": "Extension key must be lowercase 'x-...'.", "payload": {"dcp_version": "1.0", "message_id": "msg_bk0001", "message_type": "task.created", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_min0001", "entity_type": "task", "verb": "created", "entity_id": "task_x", "entity": {"id": "task_x", "project_id": "project_x", "title": "A task", "status": "todo"}}, "extensions": {"x-Vendor": {}}}}
+{"case": "bad-dcp-version", "file": "invalid/bad-dcp-version.json", "expect": "reject", "schema": "dcp-message", "note": "dcp_version must be 'major.minor'.", "payload": {"dcp_version": "1", "message_id": "msg_ver0001", "message_type": "task.created", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_min0001", "entity_type": "task", "verb": "created", "entity_id": "task_x", "entity": {"id": "task_x", "project_id": "project_x", "title": "A task", "status": "todo"}}}}
+{"case": "ref-forbidden-rel", "file": "invalid/ref-forbidden-rel.json", "expect": "reject", "schema": "dcp-message", "note": "rel vocabulary is closed; routing/permission verbs like 'approved_by' are forbidden (SRP guard).", "payload": {"dcp_version": "1.0", "message_id": "msg_rel0001", "message_type": "task.updated", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_refs001", "entity_type": "task", "verb": "updated", "entity_id": "task_x", "refs": [{"rel": "approved_by", "ref": "user_x"}]}}}
+{"case": "delta-nested-object", "file": "invalid/delta-nested-object.json", "expect": "reject", "schema": "dcp-message", "note": "delta leaf values must be scalar or null; nested objects are rejected.", "payload": {"dcp_version": "1.0", "message_id": "msg_dn0001", "message_type": "task.status_changed", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_delta01", "entity_type": "task", "verb": "status_changed", "entity_id": "task_x", "delta": {"meta": {"to": {"nested": 1}}}}}}
+{"case": "timestamp-with-offset", "file": "invalid/timestamp-with-offset.json", "expect": "reject", "schema": "dcp-message", "note": "Timestamps must be UTC with a trailing 'Z'.", "payload": {"dcp_version": "1.0", "message_id": "msg_ts0001", "message_type": "task.created", "issued_at": "2026-06-29T10:00:00+02:00", "body": {"event_id": "evt_min0001", "entity_type": "task", "verb": "created", "entity_id": "task_x", "entity": {"id": "task_x", "project_id": "project_x", "title": "A task", "status": "todo"}}}}
+{"case": "entity-shape-violation", "file": "invalid/entity-shape-violation.json", "expect": "reject", "schema": "dcp-message", "note": "A task snapshot missing 'title' must be rejected (conditional entity dispatch).", "payload": {"dcp_version": "1.0", "message_id": "msg_es0001", "message_type": "task.created", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_min0001", "entity_type": "task", "verb": "created", "entity_id": "task_x", "entity": {"id": "task_x", "project_id": "project_x", "status": "todo"}}}}
+{"case": "unknown-entity-type", "file": "invalid/unknown-entity-type.json", "expect": "reject", "schema": "dcp-message", "note": "entity_type is a closed enum of the eight v1 nouns.", "payload": {"dcp_version": "1.0", "message_id": "msg_uet0001", "message_type": "epic.created", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_uet0001", "entity_type": "epic", "verb": "created", "entity_id": "epic_x", "refs": [{"rel": "relates_to", "ref": "project_x"}]}}}
+{"case": "message-type-no-dot", "file": "invalid/message-type-no-dot.json", "expect": "reject", "schema": "dcp-message", "note": "message_type must be '<entity>.<verb>'.", "payload": {"dcp_version": "1.0", "message_id": "msg_nd0001", "message_type": "taskcreated", "issued_at": "2026-06-29T10:00:00Z", "body": {"event_id": "evt_min0001", "entity_type": "task", "verb": "created", "entity_id": "task_x", "entity": {"id": "task_x", "project_id": "project_x", "title": "A task", "status": "todo"}}}}
+{"case": "job-requeued-same-entity", "file": "valid/job-requeued-same-entity.json", "expect": "accept", "schema": "dcp-message", "note": "Job-lifecycle (x-agentsweaver): open verb 'requeued' on a stable entity_id; delta status leased->open is a retry (lease expiry or operator retry), ordered by the emitter-maintained monotonic x-agentsweaver.attempt counter.", "payload": {"dcp_version": "1.0", "message_id": "msg_aw_01JZK0007", "message_type": "task.requeued", "issued_at": "2026-07-03T06:34:00Z", "correlation_id": "msg_aw_01JZK0000", "body": {"event_id": "evt_aw_01JZK0007", "entity_type": "task", "verb": "requeued", "entity_id": "task_awjob_8b2d1a", "project_id": "project_aw_tokonomix_rail", "occurred_at": "2026-07-03T06:33:57Z", "attributed_to": "aw-job-broker", "delta": {"status": {"from": "leased", "to": "open"}, "responsible_party": {"to": null}}, "extensions": {"x-agentsweaver": {"attempt": 2, "requeue_reason": "lease_expired"}}}}}
+{"case": "job-mismatch-open-verb", "file": "invalid/job-mismatch-open-verb.json", "expect": "reject", "schema": "dcp-message", "note": "message_type/body.verb mismatch on an OPEN verb (task.leased vs assigned) \u2014 the 4.1 rule applies beyond the controlled vocabulary.", "payload": {"dcp_version": "1.0", "message_id": "msg_aw_bad_0001", "message_type": "task.leased", "issued_at": "2026-07-03T06:21:00Z", "body": {"event_id": "evt_aw_bad_0001", "entity_type": "task", "verb": "assigned", "entity_id": "task_awjob_7f3a9c", "delta": {"status": {"to": "leased"}}}}}
+{"case": "job-lease-field-toplevel", "file": "invalid/job-lease-field-toplevel.json", "expect": "reject", "schema": "dcp-message", "note": "Rail mechanics (fence_token) as a top-level Event field instead of inside x-<vendor> extensions \u2014 additionalProperties:false rejects.", "payload": {"dcp_version": "1.0", "message_id": "msg_aw_bad_0002", "message_type": "task.leased", "issued_at": "2026-07-03T06:21:00Z", "body": {"event_id": "evt_aw_bad_0002", "entity_type": "task", "verb": "leased", "entity_id": "task_awjob_7f3a9c", "fence_token": 1041, "delta": {"status": {"to": "leased"}}}}}
+{"case": "job-extension-no-prefix", "file": "invalid/job-extension-no-prefix.json", "expect": "reject", "schema": "dcp-message", "note": "Extension key without the x- prefix.", "payload": {"dcp_version": "1.0", "message_id": "msg_aw_bad_0003", "message_type": "task.leased", "issued_at": "2026-07-03T06:21:00Z", "body": {"event_id": "evt_aw_bad_0003", "entity_type": "task", "verb": "leased", "entity_id": "task_awjob_7f3a9c", "delta": {"status": {"to": "leased"}}, "extensions": {"agentsweaver": {"fence_token": 1041}}}}}
+{"case": "job-delta-nested-object", "file": "invalid/job-delta-nested-object.json", "expect": "reject", "schema": "dcp-message", "note": "Delta leaf must be scalar or null; nested object rejected (job-lifecycle variant of the existing rule).", "payload": {"dcp_version": "1.0", "message_id": "msg_aw_bad_0004", "message_type": "task.leased", "issued_at": "2026-07-03T06:21:00Z", "body": {"event_id": "evt_aw_bad_0004", "entity_type": "task", "verb": "leased", "entity_id": "task_awjob_7f3a9c", "delta": {"status": {"from": {"state": "open"}, "to": {"state": "leased"}}}}}}

corpus/invalid/bad-dcp-version.json

@@ -0,0 +1,18 @@
+{
+  "dcp_version": "1",
+  "message_id": "msg_ver0001",
+  "message_type": "task.created",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_min0001",
+    "entity_type": "task",
+    "verb": "created",
+    "entity_id": "task_x",
+    "entity": {
+      "id": "task_x",
+      "project_id": "project_x",
+      "title": "A task",
+      "status": "todo"
+    }
+  }
+}

corpus/invalid/bad-extension-key.json

@@ -0,0 +1,21 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_bk0001",
+  "message_type": "task.created",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_min0001",
+    "entity_type": "task",
+    "verb": "created",
+    "entity_id": "task_x",
+    "entity": {
+      "id": "task_x",
+      "project_id": "project_x",
+      "title": "A task",
+      "status": "todo"
+    }
+  },
+  "extensions": {
+    "x-Vendor": {}
+  }
+}

corpus/invalid/bad-id-pattern.json

@@ -0,0 +1,18 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_badid01",
+  "message_type": "task.updated",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_refs001",
+    "entity_type": "task",
+    "verb": "updated",
+    "entity_id": "Task 42",
+    "refs": [
+      {
+        "rel": "relates_to",
+        "ref": "task_y"
+      }
+    ]
+  }
+}

corpus/invalid/delta-nested-object.json

@@ -0,0 +1,19 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_dn0001",
+  "message_type": "task.status_changed",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_delta01",
+    "entity_type": "task",
+    "verb": "status_changed",
+    "entity_id": "task_x",
+    "delta": {
+      "meta": {
+        "to": {
+          "nested": 1
+        }
+      }
+    }
+  }
+}

corpus/invalid/entity-shape-violation.json

@@ -0,0 +1,17 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_es0001",
+  "message_type": "task.created",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_min0001",
+    "entity_type": "task",
+    "verb": "created",
+    "entity_id": "task_x",
+    "entity": {
+      "id": "task_x",
+      "project_id": "project_x",
+      "status": "todo"
+    }
+  }
+}

corpus/invalid/envelope-extra-field.json

@@ -0,0 +1,19 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_bad0001",
+  "message_type": "task.created",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_min0001",
+    "entity_type": "task",
+    "verb": "created",
+    "entity_id": "task_x",
+    "entity": {
+      "id": "task_x",
+      "project_id": "project_x",
+      "title": "A task",
+      "status": "todo"
+    }
+  },
+  "foo": "bar"
+}

corpus/invalid/envelope-missing-message-id.json

@@ -0,0 +1,17 @@
+{
+  "dcp_version": "1.0",
+  "message_type": "task.created",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_min0001",
+    "entity_type": "task",
+    "verb": "created",
+    "entity_id": "task_x",
+    "entity": {
+      "id": "task_x",
+      "project_id": "project_x",
+      "title": "A task",
+      "status": "todo"
+    }
+  }
+}

corpus/invalid/event-empty-payload.json

@@ -0,0 +1,12 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_empty01",
+  "message_type": "task.updated",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_empty01",
+    "entity_type": "task",
+    "verb": "updated",
+    "entity_id": "task_x"
+  }
+}

corpus/invalid/job-delta-nested-object.json

@@ -0,0 +1,13 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_aw_bad_0004",
+  "message_type": "task.leased",
+  "issued_at": "2026-07-03T06:21:00Z",
+  "body": {
+    "event_id": "evt_aw_bad_0004",
+    "entity_type": "task",
+    "verb": "leased",
+    "entity_id": "task_awjob_7f3a9c",
+    "delta": { "status": { "from": { "state": "open" }, "to": { "state": "leased" } } }
+  }
+}

corpus/invalid/job-extension-no-prefix.json

@@ -0,0 +1,14 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_aw_bad_0003",
+  "message_type": "task.leased",
+  "issued_at": "2026-07-03T06:21:00Z",
+  "body": {
+    "event_id": "evt_aw_bad_0003",
+    "entity_type": "task",
+    "verb": "leased",
+    "entity_id": "task_awjob_7f3a9c",
+    "delta": { "status": { "to": "leased" } },
+    "extensions": { "agentsweaver": { "fence_token": 1041 } }
+  }
+}

corpus/invalid/job-lease-field-toplevel.json

@@ -0,0 +1,14 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_aw_bad_0002",
+  "message_type": "task.leased",
+  "issued_at": "2026-07-03T06:21:00Z",
+  "body": {
+    "event_id": "evt_aw_bad_0002",
+    "entity_type": "task",
+    "verb": "leased",
+    "entity_id": "task_awjob_7f3a9c",
+    "fence_token": 1041,
+    "delta": { "status": { "to": "leased" } }
+  }
+}

corpus/invalid/job-mismatch-open-verb.json

@@ -0,0 +1,13 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_aw_bad_0001",
+  "message_type": "task.leased",
+  "issued_at": "2026-07-03T06:21:00Z",
+  "body": {
+    "event_id": "evt_aw_bad_0001",
+    "entity_type": "task",
+    "verb": "assigned",
+    "entity_id": "task_awjob_7f3a9c",
+    "delta": { "status": { "to": "leased" } }
+  }
+}

corpus/invalid/message-type-mismatch.json

@@ -0,0 +1,18 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_mt0001",
+  "message_type": "task.updated",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_min0001",
+    "entity_type": "task",
+    "verb": "created",
+    "entity_id": "task_x",
+    "entity": {
+      "id": "task_x",
+      "project_id": "project_x",
+      "title": "A task",
+      "status": "todo"
+    }
+  }
+}

corpus/invalid/message-type-no-dot.json

@@ -0,0 +1,18 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_nd0001",
+  "message_type": "taskcreated",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_min0001",
+    "entity_type": "task",
+    "verb": "created",
+    "entity_id": "task_x",
+    "entity": {
+      "id": "task_x",
+      "project_id": "project_x",
+      "title": "A task",
+      "status": "todo"
+    }
+  }
+}

corpus/invalid/non-namespaced-extension.json

@@ -0,0 +1,21 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_ns0001",
+  "message_type": "task.created",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_min0001",
+    "entity_type": "task",
+    "verb": "created",
+    "entity_id": "task_x",
+    "entity": {
+      "id": "task_x",
+      "project_id": "project_x",
+      "title": "A task",
+      "status": "todo"
+    }
+  },
+  "extensions": {
+    "foo": {}
+  }
+}

corpus/invalid/ref-forbidden-rel.json

@@ -0,0 +1,18 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_rel0001",
+  "message_type": "task.updated",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_refs001",
+    "entity_type": "task",
+    "verb": "updated",
+    "entity_id": "task_x",
+    "refs": [
+      {
+        "rel": "approved_by",
+        "ref": "user_x"
+      }
+    ]
+  }
+}

corpus/invalid/timestamp-with-offset.json

@@ -0,0 +1,18 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_ts0001",
+  "message_type": "task.created",
+  "issued_at": "2026-06-29T10:00:00+02:00",
+  "body": {
+    "event_id": "evt_min0001",
+    "entity_type": "task",
+    "verb": "created",
+    "entity_id": "task_x",
+    "entity": {
+      "id": "task_x",
+      "project_id": "project_x",
+      "title": "A task",
+      "status": "todo"
+    }
+  }
+}

corpus/invalid/unknown-entity-type.json

@@ -0,0 +1,18 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_uet0001",
+  "message_type": "epic.created",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_uet0001",
+    "entity_type": "epic",
+    "verb": "created",
+    "entity_id": "epic_x",
+    "refs": [
+      {
+        "rel": "relates_to",
+        "ref": "project_x"
+      }
+    ]
+  }
+}

corpus/manifest.json

@@ -0,0 +1,157 @@
+{
+  "$comment": "DCP v1 conformance corpus. Any implementation MUST accept every 'accept' case and reject every 'reject' case when validating as a DcpMessage (schema + the message_type consistency rule).",
+  "dcp_version": "1.0",
+  "schemaBase": "https://schemas.devcopro.org/v1/",
+  "cases": [
+    {
+      "file": "valid/minimal-task-created.json",
+      "schema": "dcp-message",
+      "expect": "accept",
+      "note": "Only required fields present."
+    },
+    {
+      "file": "valid/event-only-refs.json",
+      "schema": "dcp-message",
+      "expect": "accept",
+      "note": "Event payload satisfied by refs alone."
+    },
+    {
+      "file": "valid/event-only-delta.json",
+      "schema": "dcp-message",
+      "expect": "accept",
+      "note": "Event payload satisfied by delta alone."
+    },
+    {
+      "file": "valid/unknown-verb-tolerated.json",
+      "schema": "dcp-message",
+      "expect": "accept",
+      "note": "Unknown verb 'archived' must be tolerated (forward-compat)."
+    },
+    {
+      "file": "valid/unknown-status-tolerated.json",
+      "schema": "dcp-message",
+      "expect": "accept",
+      "note": "Unknown status 'on_hold' must be tolerated (forward-compat)."
+    },
+    {
+      "file": "valid/extensions-namespaced.json",
+      "schema": "dcp-message",
+      "expect": "accept",
+      "note": "Namespaced x- extensions on envelope and entity."
+    },
+    {
+      "file": "invalid/envelope-extra-field.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "Unknown top-level field violates additionalProperties:false on the envelope core."
+    },
+    {
+      "file": "invalid/envelope-missing-message-id.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "message_id is required."
+    },
+    {
+      "file": "invalid/message-type-mismatch.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "message_type must equal '<entity_type>.<verb>'."
+    },
+    {
+      "file": "invalid/event-empty-payload.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "Event must carry at least one of entity/delta/refs."
+    },
+    {
+      "file": "invalid/bad-id-pattern.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "entity_id must match the opaque id pattern."
+    },
+    {
+      "file": "invalid/non-namespaced-extension.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "Extension keys must match '^x-<vendor>$'."
+    },
+    {
+      "file": "invalid/bad-extension-key.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "Extension key must be lowercase 'x-...'."
+    },
+    {
+      "file": "invalid/bad-dcp-version.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "dcp_version must be 'major.minor'."
+    },
+    {
+      "file": "invalid/ref-forbidden-rel.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "rel vocabulary is closed; routing/permission verbs like 'approved_by' are forbidden (SRP guard)."
+    },
+    {
+      "file": "invalid/delta-nested-object.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "delta leaf values must be scalar or null; nested objects are rejected."
+    },
+    {
+      "file": "invalid/timestamp-with-offset.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "Timestamps must be UTC with a trailing 'Z'."
+    },
+    {
+      "file": "invalid/entity-shape-violation.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "A task snapshot missing 'title' must be rejected (conditional entity dispatch)."
+    },
+    {
+      "file": "invalid/unknown-entity-type.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "entity_type is a closed enum of the eight v1 nouns."
+    },
+    {
+      "file": "invalid/message-type-no-dot.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "message_type must be '<entity>.<verb>'."
+    },
+    {
+      "file": "valid/job-requeued-same-entity.json",
+      "schema": "dcp-message",
+      "expect": "accept",
+      "note": "Job-lifecycle (x-agentsweaver): open verb 'requeued' on a stable entity_id; delta status leased->open is a retry (lease expiry or operator retry), ordered by the emitter-maintained monotonic x-agentsweaver.attempt counter."
+    },
+    {
+      "file": "invalid/job-mismatch-open-verb.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "message_type/body.verb mismatch on an OPEN verb (task.leased vs assigned) \u2014 the 4.1 rule applies beyond the controlled vocabulary."
+    },
+    {
+      "file": "invalid/job-lease-field-toplevel.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "Rail mechanics (fence_token) as a top-level Event field instead of inside x-<vendor> extensions \u2014 additionalProperties:false rejects."
+    },
+    {
+      "file": "invalid/job-extension-no-prefix.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "Extension key without the x- prefix."
+    },
+    {
+      "file": "invalid/job-delta-nested-object.json",
+      "schema": "dcp-message",
+      "expect": "reject",
+      "note": "Delta leaf must be scalar or null; nested object rejected (job-lifecycle variant of the existing rule)."
+    }
+  ]
+}

corpus/valid/event-only-delta.json

@@ -0,0 +1,18 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_delta01",
+  "message_type": "task.status_changed",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_delta01",
+    "entity_type": "task",
+    "verb": "status_changed",
+    "entity_id": "task_x",
+    "delta": {
+      "status": {
+        "from": "todo",
+        "to": "in_progress"
+      }
+    }
+  }
+}

corpus/valid/event-only-refs.json

@@ -0,0 +1,18 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_refs001",
+  "message_type": "task.updated",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_refs001",
+    "entity_type": "task",
+    "verb": "updated",
+    "entity_id": "task_x",
+    "refs": [
+      {
+        "rel": "relates_to",
+        "ref": "task_y"
+      }
+    ]
+  }
+}

corpus/valid/extensions-namespaced.json

@@ -0,0 +1,27 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_ext0001",
+  "message_type": "project.snapshot",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "extensions": {
+    "x-tokonomix": {
+      "council_run_id": "run_123"
+    }
+  },
+  "body": {
+    "event_id": "evt_ext0001",
+    "entity_type": "project",
+    "verb": "snapshot",
+    "entity_id": "project_x",
+    "entity": {
+      "id": "project_x",
+      "name": "P",
+      "status": "active",
+      "extensions": {
+        "x-github": {
+          "issue": 7
+        }
+      }
+    }
+  }
+}

corpus/valid/job-requeued-same-entity.json

@@ -0,0 +1,31 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_aw_01JZK0007",
+  "message_type": "task.requeued",
+  "issued_at": "2026-07-03T06:34:00Z",
+  "correlation_id": "msg_aw_01JZK0000",
+  "body": {
+    "event_id": "evt_aw_01JZK0007",
+    "entity_type": "task",
+    "verb": "requeued",
+    "entity_id": "task_awjob_8b2d1a",
+    "project_id": "project_aw_tokonomix_rail",
+    "occurred_at": "2026-07-03T06:33:57Z",
+    "attributed_to": "aw-job-broker",
+    "delta": {
+      "status": {
+        "from": "leased",
+        "to": "open"
+      },
+      "responsible_party": {
+        "to": null
+      }
+    },
+    "extensions": {
+      "x-agentsweaver": {
+        "attempt": 2,
+        "requeue_reason": "lease_expired"
+      }
+    }
+  }
+}

corpus/valid/minimal-task-created.json

@@ -0,0 +1,18 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_min0001",
+  "message_type": "task.created",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_min0001",
+    "entity_type": "task",
+    "verb": "created",
+    "entity_id": "task_x",
+    "entity": {
+      "id": "task_x",
+      "project_id": "project_x",
+      "title": "A task",
+      "status": "todo"
+    }
+  }
+}

corpus/valid/unknown-status-tolerated.json

@@ -0,0 +1,18 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_ustat01",
+  "message_type": "task.snapshot",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_ustat01",
+    "entity_type": "task",
+    "verb": "snapshot",
+    "entity_id": "task_x",
+    "entity": {
+      "id": "task_x",
+      "project_id": "project_x",
+      "title": "A task",
+      "status": "on_hold"
+    }
+  }
+}

corpus/valid/unknown-verb-tolerated.json

@@ -0,0 +1,18 @@
+{
+  "dcp_version": "1.0",
+  "message_id": "msg_uverb01",
+  "message_type": "task.archived",
+  "issued_at": "2026-06-29T10:00:00Z",
+  "body": {
+    "event_id": "evt_uverb01",
+    "entity_type": "task",
+    "verb": "archived",
+    "entity_id": "task_x",
+    "refs": [
+      {
+        "rel": "relates_to",
+        "ref": "project_x"
+      }
+    ]
+  }
+}