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fix: always send both GraphQL-Features flags when assigning Copilot to an issue #39719

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Merged
pelikhan merged 2 commits into from
Jun 17, 2026
Merged

fix: always send both GraphQL-Features flags when assigning Copilot to an issue #39719

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b5c5041
Fix: always include coding_agent_model_selection in GraphQL-Features …
Copilot Jun 17, 2026
8c9b736
Fix: always include coding_agent_model_selection in GraphQL-Features …
Copilot Jun 17, 2026
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3 changes: 2 additions & 1 deletion .github/workflows/release.lock.yml
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6 changes: 3 additions & 3 deletions actions/setup/js/assign_agent_helpers.cjs
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Original file line number Diff line number Diff line change
Expand Up @@ -377,8 +377,8 @@ async function assignAgentToIssue(assignableId, agentId, currentAssignees, agent
];
core.debug(`GraphQL mutation with variables: ${debugParts.join(", ")}`);

// Build GraphQL-Features header - include coding_agent_model_selection when model is provided
const graphqlFeatures = model ? "issues_copilot_assignment_api_support,coding_agent_model_selection" : "issues_copilot_assignment_api_support";
// Both feature flags are required per GitHub Copilot documentation
const graphqlFeatures = "issues_copilot_assignment_api_support,coding_agent_model_selection";

const response = await githubClient.graphql(mutation, {
...variables,
Expand Down Expand Up @@ -483,7 +483,7 @@ async function assignAgentToIssue(assignableId, agentId, currentAssignees, agent
assignableId,
assigneeIds: [agentId],
headers: {
"GraphQL-Features": "issues_copilot_assignment_api_support",
"GraphQL-Features": "issues_copilot_assignment_api_support,coding_agent_model_selection",
},
});
if (fallbackResp?.addAssigneesToAssignable) {
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6 changes: 3 additions & 3 deletions actions/setup/js/assign_agent_helpers.test.cjs
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Original file line number Diff line number Diff line change
Expand Up @@ -260,10 +260,10 @@ describe("assign_agent_helpers.cjs", () => {
})
);

// Should only include issues_copilot_assignment_api_support when model is not provided
// Should always include both issues_copilot_assignment_api_support and coding_agent_model_selection
const calledArgs = mockGithub.graphql.mock.calls[0];
const variables = calledArgs[1];
expect(variables.headers["GraphQL-Features"]).toBe("issues_copilot_assignment_api_support");
expect(variables.headers["GraphQL-Features"]).toBe("issues_copilot_assignment_api_support,coding_agent_model_selection");
});

it("should preserve existing assignees when adding agent", async () => {
Expand Down Expand Up @@ -330,7 +330,7 @@ describe("assign_agent_helpers.cjs", () => {
expect(mutation).toContain("agentAssignment");
expect(mutation).toContain("model: $model");
expect(variables.model).toBe("claude-opus-4.6");
// Should include coding_agent_model_selection feature flag when model is provided
// Should always include both feature flags
expect(variables.headers["GraphQL-Features"]).toBe("issues_copilot_assignment_api_support,coding_agent_model_selection");
});

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