feat: publish to official MCP registry via GitHub OIDC

Add server.json (remote streamable-http + npm package, namespace
io.github.stockmarketscan/earningscalls-mcp) and a GitHub Actions workflow
that publishes it to registry.modelcontextprotocol.io using OIDC — no
interactive login or stored secret.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: 2 people

.github/workflows/publish-mcp.yml

@@ -0,0 +1,33 @@
+name: Publish to MCP Registry
+
+# Publishes server.json to the official MCP registry
+# (registry.modelcontextprotocol.io) using GitHub OIDC — no interactive
+# login or stored secret needed. Runs on changes to server.json, and can
+# be triggered manually.
+on:
+  push:
+    branches: [main]
+    paths:
+      - server.json
+      - .github/workflows/publish-mcp.yml
+  workflow_dispatch:
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write   # required for GitHub OIDC auth to the registry
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install mcp-publisher
+        run: |
+          curl -fsSL "https://github.com/modelcontextprotocol/registry/releases/latest/download/mcp-publisher_linux_amd64.tar.gz" \
+            | tar -xz mcp-publisher
+
+      - name: Authenticate (GitHub OIDC)
+        run: ./mcp-publisher login github-oidc
+
+      - name: Publish
+        run: ./mcp-publisher publish

server.json

@@ -0,0 +1,45 @@
+{
+  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
+  "name": "io.github.stockmarketscan/earningscalls-mcp",
+  "title": "EarningsCalls.dev",
+  "description": "AI access to 177,000+ earnings call transcripts (17,000+ companies, 70 countries, 2020-present) with role-tagged speaker segments and full-text search.",
+  "version": "0.1.0",
+  "websiteUrl": "https://earningscalls.dev/mcp",
+  "repository": {
+    "url": "https://github.com/stockmarketscan/earningscalls-mcp",
+    "source": "github"
+  },
+  "packages": [
+    {
+      "registryType": "npm",
+      "registryBaseUrl": "https://registry.npmjs.org",
+      "identifier": "@earningscalls/mcp-server",
+      "version": "0.1.0",
+      "transport": {
+        "type": "stdio"
+      },
+      "environmentVariables": [
+        {
+          "name": "EARNINGSCALLS_API_KEY",
+          "description": "Your EarningsCalls.dev API key (ect_...). Paid plan required; get one at https://earningscalls.dev/#pricing",
+          "isRequired": true,
+          "isSecret": true
+        }
+      ]
+    }
+  ],
+  "remotes": [
+    {
+      "type": "streamable-http",
+      "url": "https://mcp.earningscalls.dev/mcp",
+      "headers": [
+        {
+          "name": "X-API-Key",
+          "description": "Your EarningsCalls.dev API key (ect_...). Paid plan required.",
+          "isRequired": true,
+          "isSecret": true
+        }
+      ]
+    }
+  ]
+}