Fix upstream Content-Type duplication and provider routing - #14
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Build outbound JSON requests with a single application/json header so streaming providers like OpenCode Go stop returning 415, route prefixed and upstream_id model aliases to the intended gateway, and stop falling back to the default provider for unknown models.
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August 6, 2026 01:32
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Only strip provider prefixes when the prefix resolves to the selected gateway so OpenRouter vendor/model slugs stay intact, and return a dedicated 502 message when an explicit model cannot be routed.
Restore single-provider cold-start routing for unlisted slugs while keeping multi-provider unknown-model 502s; list upstream_id aliases in /models; use generic no-provider errors for codex-auto-review and empty model fields.
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Summary
Content-Type: application/jsonheader, fixing OpenCode Go streaming 415 errors caused by reqwest appending a duplicate value.hicap/...,opencode-go/...) and catalogupstream_idaliases so gateway-selected models never fall back to the default provider.hicap/grok-4.3→grok-4.3).Test plan
cargo test(134 tests pass)opencode-go/deepseek-v4-flashstreaming via warp returns 200hicap/grok-4.3andhicap/grok-4.5return 200 via HiCap APIgrok-4.3) return 502 instead of hitting default provider