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fix(opencode): cloak Responses requests that already have tools

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Free-tier Zen models reject Responses requests with 403 FreeTierError
when client tools are present but the fingerprint quartet is missing.
Apply the fingerprint tools to every OpenCode request, canonicalise
case variants of the quartet (Bash->bash) without duplication, and
restore the caller's original spellings on the response side via a
request-local WeakMap threaded through the existing toolNameMap.
This commit is contained in:
Aaron
2026-09-19 10:10:43 +07:00
committed by decolua
parent 49185137b8
commit 822aa958d1
8 changed files with 506 additions and 103 deletions
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8
open-sse/translator/index.js
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@@ -2,6 +2,7 @@ import { FORMATS } from "./formats.js";
import { ensureToolCallIds, fixMissingToolResponses } from "./concerns/toolCall.js";
import { prepareClaudeRequest } from "./formats/claude.js";
import { cloakClaudeTools, decloakStreamChunk } from "../utils/claudeCloaking.js";
import { restoreToolNames } from "../utils/opencodeFingerprint.js";
import { filterToOpenAIFormat } from "./formats/openai.js";
import { normalizeThinkingConfig } from "../services/provider.js";
import { applyThinking, captureThinking } from "./concerns/thinkingUnified.js";
@@ -166,7 +167,7 @@ export function translateResponse(targetFormat, sourceFormat, chunk, state) {
// even when no format conversion is needed, so streamed tool_use blocks must
// be decloaked here or the client sees an unknown ("_ide"-suffixed) tool.
if (sourceFormat === targetFormat) {
return [decloakStreamChunk(chunk, state?.toolNameMap)];
return [restoreToolNames(decloakStreamChunk(chunk, state?.toolNameMap), state?.toolNameMap)];
}
let results = [chunk];
@@ -179,7 +180,8 @@ export function translateResponse(targetFormat, sourceFormat, chunk, state) {
const directFn = responseRegistry.get(`${targetFormat}:${sourceFormat}`);
if (directFn) {
const converted = directFn(chunk, state);
return converted ? (Array.isArray(converted) ? converted : [converted]) : [];
const directResults = converted ? (Array.isArray(converted) ? converted : [converted]) : [];
return restoreToolNames(directResults, state?.toolNameMap);
}
// Step 1: target -> openai (if target is not openai)
@@ -210,6 +212,8 @@ export function translateResponse(targetFormat, sourceFormat, chunk, state) {
}
}
results = restoreToolNames(results, state?.toolNameMap);
// Attach OpenAI intermediate results for logging
if (openaiResults && sourceFormat !== FORMATS.OPENAI && targetFormat !== FORMATS.OPENAI) {
results._openaiIntermediate = openaiResults;