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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

---------

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
packages/api/src/mcp/ConnectionsRepository.ts
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@ -1,5 +1,5 @@
import { logger } from '@librechat/data-schemas';
import { MCPConnectionFactory, OAuthConnectionOptions } from '~/mcp/MCPConnectionFactory';
import { MCPConnectionFactory } from '~/mcp/MCPConnectionFactory';
import { MCPConnection } from './connection';
import type * as t from './types';
@ -10,9 +10,9 @@ import type * as t from './types';
export class ConnectionsRepository {
protected readonly serverConfigs: Record<string, t.MCPOptions>;
protected connections: Map<string, MCPConnection> = new Map();
protected oauthOpts: OAuthConnectionOptions | undefined;
protected oauthOpts: t.OAuthConnectionOptions | undefined;
constructor(serverConfigs: t.MCPServers, oauthOpts?: OAuthConnectionOptions) {
constructor(serverConfigs: t.MCPServers, oauthOpts?: t.OAuthConnectionOptions) {
this.serverConfigs = serverConfigs;
this.oauthOpts = oauthOpts;
}