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fix(claude): support Fable 5.1

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- add claude-fable-5-1 to the Claude Code model catalog (1M context,
  permanent adaptive thinking)
- centralize the spoofed Claude Code version and update both request
  and billing identities to 2.1.257 (Fable 5.1 rejects < 2.1.251)
- send output_config.effort without the redundant thinking switch for
  permanently adaptive models
- add regression coverage for capabilities, headers, billing identity
  and adaptive-effort payload

# Conflicts:
#	open-sse/providers/registry/claude.js
#	open-sse/providers/shared.js
#	open-sse/utils/claudeCloaking.js
#	tests/__baseline__/providers-baseline.json
This commit is contained in:
LucasOl1337
2026-09-02 20:26:02 +07:00
committed by decolua
parent ee7a961633
commit ac9120fde3
11 changed files with 39 additions and 17 deletions
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8
open-sse/utils/claudeCloaking.js
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@@ -1,16 +1,16 @@
import { createHash, randomBytes, randomUUID } from "crypto";
import { CLAUDE_TOOL_SUFFIX, CC_DEFAULT_TOOLS } from "../config/appConstants.js";
import { CLAUDE_CLI_VERSION } from "../providers/shared.js";
const CLAUDE_VERSION = "2.1.258";
const CC_ENTRYPOINT = "sdk-cli";
// Generate billing header matching real Claude Code 2.1.258+ format:
// Generate the billing header expected from current Claude Code clients.
// x-anthropic-billing-header: cc_version=<ver>.<build>; cc_entrypoint=sdk-cli; cch=<hash>;
function generateBillingHeader(payload) {
const content = JSON.stringify(payload);
const cch = createHash("sha256").update(content).digest("hex").slice(0, 5);
const buildHash = randomBytes(2).toString("hex").slice(0, 3);
return `x-anthropic-billing-header: cc_version=${CLAUDE_VERSION}.${buildHash}; cc_entrypoint=${CC_ENTRYPOINT}; cch=${cch};`;
return `x-anthropic-billing-header: cc_version=${CLAUDE_CLI_VERSION}.${buildHash}; cc_entrypoint=${CC_ENTRYPOINT}; cch=${cch};`;
}
// Derive a deterministic UUID-v4-shaped string from a seed (stable per account)
@@ -19,7 +19,7 @@ function deriveUuid(seed) {
return `${h.slice(0, 8)}-${h.slice(8, 12)}-4${h.slice(13, 16)}-${((parseInt(h[16], 16) & 0x3) | 0x8).toString(16)}${h.slice(17, 20)}-${h.slice(20, 32)}`;
}
// Generate fake user ID in Claude Code 2.1.258+ JSON format:
// Generate fake user ID in the current Claude Code JSON format:
// {"device_id":"<64hex>","account_uuid":"<uuid>","session_id":"<uuid>"}
// device_id/account_uuid derive from apiKey (stable per account), session_id per-conversation
function generateFakeUserID(sessionId, apiKey) {