fix: bundle Rust broker binary for SDK programmatic usage#440
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khaliqgant merged 1 commit intomainfrom Feb 18, 2026
Merged
fix: bundle Rust broker binary for SDK programmatic usage#440khaliqgant merged 1 commit intomainfrom
khaliqgant merged 1 commit intomainfrom
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| await writeFile( | ||
| cachePath, | ||
| JSON.stringify({ | ||
| workspace_id: workspaceId, | ||
| api_key: apiKey, | ||
| agent_id: '', | ||
| agent_name: null, | ||
| updated_at: new Date().toISOString(), | ||
| }), | ||
| ); |
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| JSON.stringify({ | ||
| workspace_id: workspaceId, | ||
| api_key: apiKey, | ||
| agent_id: '', | ||
| agent_name: null, | ||
| updated_at: new Date().toISOString(), | ||
| }), |
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Network data written to file Medium
The SDK's AgentRelayClient spawns `agent-relay init --name broker
--channels <channel>` which requires the Rust broker binary, not
the Bun-compiled Node.js CLI. The publish workflow was uploading
the CLI as `agent-relay-{platform}-{arch}` and postinstall was
downloading it into sdk-ts/bin/, causing "broker exited (code=1)"
errors for all workflow runs.
Changes:
- Add `build-broker` CI job that compiles src/main.rs (Rust) for
all platforms as `agent-relay-broker-{platform}-{arch}`
- Update postinstall.js to download broker-specific release assets
- Add validation to detect wrong binary (CLI vs Rust broker)
- Check target/release before target/debug in dev fallback
- Add Relaycast auto-provisioning to WorkflowRunner so workflows
run without manual RELAY_API_KEY setup
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
AgentRelayClientspawnsagent-relay init --name broker --channels <channel>which requires the Rust broker binary, not the Bun-compiled Node.js CLIagent-relay-{platform}-{arch}andpostinstall.jswas downloading it intosdk-ts/bin/, causing "broker exited (code=1)" for all workflow runsRELAY_API_KEYsetupChanges
CI: Add
build-brokerjob (publish.yml)src/main.rsviacargo build --releasefor all 4 platformsagent-relay-broker-{platform}-{arch}(distinct from CLI'sagent-relay-{platform}-{arch})Postinstall: Download correct binary (
postinstall.js)getBrokerBinaryName()now returnsagent-relay-broker-{platform}-{arch}instead ofagent-relay-{platform}-{arch}--nameflag ininit --help)target/releasebeforetarget/debugin dev fallbackWorkflowRunner: Auto-provision Relaycast (
runner.ts)ensureRelaycastApiKey()runs before broker startupRELAY_API_KEYenv var → cached~/.agent-relay/relaycast.json→ auto-create workspacerelay-{channel}-{hex}) to avoid 409 conflictsTest plan
npm run buildpasses (sdk-ts compiles cleanly)agent-relay run workflows/example.yaml— broker should start without manual API key setupbuild-brokerjob produces valid Rust binaries for all platforms🤖 Generated with Claude Code