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fix: A2A JSON-RPC v2: 1.0 Protocol-compliant #4380

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Merged
iskhakov merged 6 commits into from
May 8, 2026
Merged

fix: A2A JSON-RPC v2: 1.0 Protocol-compliant #4380

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877185b
A2A v2 1.0 protocol compliant + fixes
ilyakorovin May 5, 2026
e6a3ffc
codegen
ilyakorovin May 6, 2026
fd6b366
Merge remote-tracking branch 'origin/main' into fix/a2a-jsonrpc-proto…
iskhakov May 8, 2026
2355f82
fix: sort imports in identity-providers.ee.spec.ts
iskhakov May 8, 2026
7eff035
fix: drop unused exports flagged by knip
iskhakov May 8, 2026
1b21634
Merge branch 'main' into fix/a2a-jsonrpc-protocol-compliant
iskhakov May 8, 2026
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30 changes: 25 additions & 5 deletions docs/openapi.json
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Original file line number Diff line number Diff line change
Expand Up @@ -34744,7 +34744,7 @@
}
}
},
"/v2/a2a/{agentId}/.well-known/agent.json": {
"/v2/a2a/{agentId}/.well-known/agent-card.json": {
"get": {
"tags": [
"A2A"
Expand Down Expand Up @@ -34776,12 +34776,32 @@
"description": {
"type": "string"
},
"url": {
"type": "string"
},
"version": {
"type": "string"
},
"supportedInterfaces": {
"type": "array",
"items": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"protocolBinding": {
"type": "string"
},
"protocolVersion": {
"type": "string"
}
},
"required": [
"url",
"protocolBinding",
"protocolVersion"
],
"additionalProperties": false
}
},
"capabilities": {
"type": "object",
"properties": {
Expand Down Expand Up @@ -34862,8 +34882,8 @@
"required": [
"name",
"description",
"url",
"version",
"supportedInterfaces",
"capabilities",
"defaultInputModes",
"defaultOutputModes",
Expand Down
3 changes: 1 addition & 2 deletions platform/backend/src/agents/a2a-executor.ts
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Expand Up @@ -307,8 +307,7 @@ export async function executeA2AMessage(
const uiMessageStreamConsumption = consumeReadableStream({
stream: stream.toUIMessageStream<UIMessage>({
originalMessages: params.originalUiMessages,
generateMessageId: () =>
`msg-${Date.now()}-${Math.random().toString(36).substring(2, 9)}`,
generateMessageId: () => crypto.randomUUID(),
onFinish: ({ responseMessage }) => {
responseUiMessage = responseMessage;
},
Expand Down
5 changes: 5 additions & 0 deletions platform/backend/src/agents/a2a/a2a-base.ts
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Expand Up @@ -17,6 +17,7 @@ export enum A2AErrorKind {
TaskIsNotInputRequired,
ApprovalIdNotFound,
ApprovalIdAlreadyResolved,
MessageIdAlreadyExists,
NothingToExecute,
}
const A2A_ERRORS: Record<A2AErrorKind, { code: number; message: string }> = {
Expand Down Expand Up @@ -68,6 +69,10 @@ const A2A_ERRORS: Record<A2AErrorKind, { code: number; message: string }> = {
code: -32602,
message: "Approval ID already resolved",
},
[A2AErrorKind.MessageIdAlreadyExists]: {
code: -32602,
message: "A message with the given ID already exists",
},
[A2AErrorKind.NothingToExecute]: {
code: -32602,
message: "Nothing to execute",
Expand Down
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