case stringlengths 14 27 | file stringlengths 26 40 | expect stringclasses 2
values | schema stringclasses 1
value | note stringlengths 23 222 | payload unknown |
|---|---|---|---|---|---|
minimal-task-created | valid/minimal-task-created.json | accept | dcp-message | Only required fields present. | {
"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",... |
event-only-refs | valid/event-only-refs.json | accept | dcp-message | Event payload satisfied by refs alone. | {
"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": "tas... |
event-only-delta | valid/event-only-delta.json | accept | dcp-message | Event payload satisfied by delta alone. | {
"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",... |
unknown-verb-tolerated | valid/unknown-verb-tolerated.json | accept | dcp-message | Unknown verb 'archived' must be tolerated (forward-compat). | {
"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": "p... |
unknown-status-tolerated | valid/unknown-status-tolerated.json | accept | dcp-message | Unknown status 'on_hold' must be tolerated (forward-compat). | {
"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... |
extensions-namespaced | valid/extensions-namespaced.json | accept | dcp-message | Namespaced x- extensions on envelope and entity. | {
"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",
"... |
envelope-extra-field | invalid/envelope-extra-field.json | reject | dcp-message | Unknown top-level field violates additionalProperties:false on the envelope core. | {
"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",... |
envelope-missing-message-id | invalid/envelope-missing-message-id.json | reject | dcp-message | message_id is required. | {
"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",
... |
message-type-mismatch | invalid/message-type-mismatch.json | reject | dcp-message | message_type must equal '<entity_type>.<verb>'. | {
"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",
... |
event-empty-payload | invalid/event-empty-payload.json | reject | dcp-message | Event must carry at least one of entity/delta/refs. | {
"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"
}
} |
bad-id-pattern | invalid/bad-id-pattern.json | reject | dcp-message | entity_id must match the opaque id pattern. | {
"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": "ta... |
non-namespaced-extension | invalid/non-namespaced-extension.json | reject | dcp-message | Extension keys must match '^x-<vendor>$'. | {
"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",
... |
bad-extension-key | invalid/bad-extension-key.json | reject | dcp-message | Extension key must be lowercase 'x-...'. | {
"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",
... |
bad-dcp-version | invalid/bad-dcp-version.json | reject | dcp-message | dcp_version must be 'major.minor'. | {
"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",
... |
ref-forbidden-rel | invalid/ref-forbidden-rel.json | reject | dcp-message | rel vocabulary is closed; routing/permission verbs like 'approved_by' are forbidden (SRP guard). | {
"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": "us... |
delta-nested-object | invalid/delta-nested-object.json | reject | dcp-message | delta leaf values must be scalar or null; nested objects are rejected. | {
"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": {
... |
timestamp-with-offset | invalid/timestamp-with-offset.json | reject | dcp-message | Timestamps must be UTC with a trailing 'Z'. | {
"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... |
entity-shape-violation | invalid/entity-shape-violation.json | reject | dcp-message | A task snapshot missing 'title' must be rejected (conditional entity dispatch). | {
"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",
... |
unknown-entity-type | invalid/unknown-entity-type.json | reject | dcp-message | entity_type is a closed enum of the eight v1 nouns. | {
"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": "pro... |
message-type-no-dot | invalid/message-type-no-dot.json | reject | dcp-message | message_type must be '<entity>.<verb>'. | {
"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",
... |
job-requeued-same-entity | valid/job-requeued-same-entity.json | accept | dcp-message | 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. | {
"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",
"pr... |
job-mismatch-open-verb | invalid/job-mismatch-open-verb.json | reject | dcp-message | message_type/body.verb mismatch on an OPEN verb (task.leased vs assigned) — the 4.1 rule applies beyond the controlled vocabulary. | {
"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": "lea... |
job-lease-field-toplevel | invalid/job-lease-field-toplevel.json | reject | dcp-message | Rail mechanics (fence_token) as a top-level Event field instead of inside x-<vendor> extensions — additionalProperties:false rejects. | {
"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... |
job-extension-no-prefix | invalid/job-extension-no-prefix.json | reject | dcp-message | Extension key without the x- prefix. | {
"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": "lease... |
job-delta-nested-object | invalid/job-delta-nested-object.json | reject | dcp-message | Delta leaf must be scalar or null; nested object rejected (job-lifecycle variant of the existing rule). | {
"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": {
... |
DCP v1 Conformance Corpus
The official, language-neutral conformance test corpus of the Development Coordination Protocol (DCP) — 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 (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 fullpayload.corpus/— the same corpus in its original layout:valid/,invalid/, andmanifest.json(the machine-readable case list an implementation iterates).
Quick start
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 (normative) — a
DcpMessagerides unchanged as CEdata. - A2A community extension — 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 · 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
@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.
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