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🏷️ feat: Request Placeholders for Custom Endpoint & MCP Headers (#9095)

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* feat: Add conversation ID support to custom endpoint headers

- Add LIBRECHAT_CONVERSATION_ID to customUserVars when provided
- Pass conversation ID to header resolution for dynamic headers
- Add comprehensive test coverage

Enables custom endpoints to access conversation context using {{LIBRECHAT_CONVERSATION_ID}} placeholder.

* fix: filter out unresolved placeholders from headers (thanks @MrunmayS)

* feat: add support for request body placeholders in custom endpoint headers

- Add {{LIBRECHAT_BODY_*}} placeholders for conversationId, parentMessageId, messageId
- Update tests to reflect new body placeholder functionality

* refactor resolveHeaders

* style: minor styling cleanup

* fix: type error in unit test

* feat: add body to other endpoints

* feat: add body for mcp tool calls

* chore: remove changes that unnecessarily increase scope after clarification of requirements

* refactor: move http.ts to packages/api and have RequestBody intersect with Express request body

* refactor: processMCPEnv now uses single object argument pattern

* refactor: update processMCPEnv to use 'options' parameter and align types across MCP connection classes

* feat: enhance MCP connection handling with dynamic request headers to pass request body fields

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Co-authored-by: Gopal Sharma <gopalsharma@gopal.sharma1>
Co-authored-by: s10gopal <36487439+s10gopal@users.noreply.github.com>
Co-authored-by: Dustin Healy <dustinhealy1@gmail.com>
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Danny Avila 2025-08-16 20:45:55 -04:00 • committed by GitHub
parent 627f0bffe5
commit d7d02766ea
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6
api/server/services/Endpoints/custom/initialize.js
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@ -28,7 +28,11 @@ const initializeClient = async ({ req, res, endpointOption, optionsOnly, overrid
const CUSTOM_API_KEY = extractEnvVariable(endpointConfig.apiKey);
const CUSTOM_BASE_URL = extractEnvVariable(endpointConfig.baseURL);
let resolvedHeaders = resolveHeaders(endpointConfig.headers, req.user);
let resolvedHeaders = resolveHeaders({
headers: endpointConfig.headers,
user: req.user,
body: req.body,
});
if (CUSTOM_API_KEY.match(envVarRegex)) {
throw new Error(`Missing API Key for ${endpoint}.`);