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Prep for 0.1.0 release (#54)
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‎README.md‎

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# Apollo MCP Server
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An MCP Server to expose a pre-defined set of GraphQL operations as MCP tools. Optionally provides introspection
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tools to allow an LLM to generate and execute its own ad hoc operations.
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# Running the Example
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The repo has an example schema in `graphql/weather/weather.graphql`, and an example set of operations in `graphql/weather/operations/*.graphql`.
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First, build the repo with:
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```sh
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cargo build
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```
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Next, run the graph in the Apollo Router:
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```sh
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rover dev --supergraph-config ./graphql/weather/supergraph.yaml
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```
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## MCP Inspector
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You can run the MCP Server with [MCP Inspector](https://modelcontextprotocol.io/docs/tools/inspector).
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### Stdio Transport
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You can run the MCP inspector with the stdio transport as follows:
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```sh
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npx @modelcontextprotocol/inspector \
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target/debug/apollo-mcp-server \
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--directory <absolute path to this git repo> \
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-s graphql/weather/api.graphql \
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-o graphql/weather/operations/forecast.graphql graphql/weather/operations/alerts.graphql graphql/weather/operations/all.graphql
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```
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Press "Connect" in the MCP Inspector and "List Tools" to see the list of available tools.
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### HTTP+SSE Transport
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To use the SSE transport with MCP Inspector, first start the MCP server in SEE mode:
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```sh
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target/debug/apollo-mcp-server \
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--directory <absolute path to this git repo> \
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--sse-port 5000 -s graphql/weather/api.graphql \
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-o graphql/weather/operations/forecast.graphql graphql/weather/operations/alerts.graphql graphql/weather/operations/all.graphql
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```
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Now start the MCP Inspector:
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```sh
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npx @modelcontextprotocol/inspector
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```
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Set the transport to SSE in the inspector and the URL to `http://localhost:5000/sse`, then press "Connect" in MCP Inspector.
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## MCP Client
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You can use the MCP Server with your favorite MCP client.
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### Client Configuration
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For Claude Desktop, the configuration file is in the following location on MacOS:
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```sh
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~/Library/Application\ Support/Claude/claude_desktop_config.json
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```
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For Cursor, you can find the file by opening the MCP tab in Settings.
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#### Stdio Transport
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To use the stdio transport, add the following to the MCP configuration file for you client, using the absolute path to this Git repo:
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```json
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{
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"mcpServers": {
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"weather": {
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"command": "<absolute path to repo>/target/debug/apollo-mcp-server",
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"args": [
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"--directory",
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"<absolute path to repo>",
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"--schema",
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"graphql/weather/api.graphql",
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"--operations",
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"graphql/weather/operations/forecast.graphql",
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"graphql/weather/operations/alerts.graphql",
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"graphql/weather/operations/all.graphql"
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]
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}
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}
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}
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```
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#### HTTP+SEE Transport
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To use the HTTP+SSE transport, first start the MCP server as described above for MCP Inspector.
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For Claude Desktop, you can use [`mcp-remote`](https://www.npmjs.com/package/mcp-remote/v/latest?activeTab=readme) to give Claude access to the MCP Server over SSE:
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<div align="center">
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<a href="https://www.apollographql.com/"><img src="https://raw.githubusercontent.com/apollographql/apollo-client-devtools/main/assets/apollo-wordmark.svg" height="100" alt="Apollo Client"></a>
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</div>
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```json
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{
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"mcpServers": {
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"weather": {
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"command": "npx",
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"args": [
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"mcp-remote",
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"http://127.0.0.1:5000/sse",
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"--transport",
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"sse-first"
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]
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}
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}
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}
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```
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For Cursor, you can directly specify the SSE URL:
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```json
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{
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"mcpServers": {
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"weather": {
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"url": "http://127.0.0.1:5000/sse"
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}
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}
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}
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```
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### Usage
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Restart your AI agent. You should now see the tools successfully registered. For example, in Claude Desktop, you should see a small hammer icon with the number of tools next to it.
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You can now issue prompts related to weather forecasts and alerts, which will call out to the tools and invoke the GraphQL operations.
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**Note** that due to current limitations of Apollo Connectors, the schema is using a hard-coded weather forecast link, so the forecast will be for a fixed location.
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#### Persisted Queries Manifests
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The MCP server also supports reading operations from an
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[Apollo](https://www.apollographql.com/docs/graphos/platform/security/persisted-queries#manifest-format) formatted
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persisted query manifest file through the use of the `--manifest` flag.
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An example is included in `graphql/weather/persisted_queries`.
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```sh
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target/debug/apollo-mcp-server \
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--directory <absolute path to this git repo> \
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-s graphql/weather/api.graphql \
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--header "apollographql-client-name:my-web-app" \
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--manifest graphql/weather/persisted_queries/apollo.json
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```
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Note that when using persisted queries, if your queries are registered with a specific client name instead of `null`,
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you will need to configure the MCP server to send the necessary header indicating the client name to the router. This
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header is `apollographql-client-name` by default, but can be overridden in the router config by setting
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`telemetry.apollo.client_name_header`. Note that in the example persisted query manifest file, the client name
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is `my-web-app`.
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This supports hot-reloading, so changes to the persisted query manifest file will be picked up by the MCP server
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without restarting.
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#### Uplink
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The MCP server can also read persisted queries from Uplink using the `--uplink` option. This supports hot-reloading,
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so it will pick up changes from GraphOS automatically, without restarting the MCP server.
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You must set the `APOLLO_KEY` and `APOLLO_GRAPH_REF` environment variables to use Uplink. It is recommended to use
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a contract variant of your graph, with a PQ list associated with that variant. That way, you control exactly what
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persisted queries are available to the MCP server.
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```sh
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target/debug/apollo-mcp-server \
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--directory <absolute path to this git repo> \
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-s graphql/weather/api.graphql \
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--header "apollographql-client-name:my-web-app" \
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--uplink
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```
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# Running Your Own Graph
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You can easily run the server with your own GraphQL schema and operations. For example with the stdio transport:
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```json
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{
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"mcpServers": {
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"<name for your server>": {
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"command": "<absolute path to repo>/target/debug/apollo-mcp-server",
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"args": [
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"--directory",
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"<absolute path to the directory containing your schema and operations file>",
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"--schema",
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"<relative path from the directory specified above to the schema>",
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"--operations",
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"<relative path from the directory specified above to the operation files>",
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"--endpoint",
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"<your GraphQL endpoint>"
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]
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}
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}
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}
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```
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The operation files are just `.graphql` files, with each file containing a single operation. Make sure to give your operations meaningful names, and document your schema as much as possible.
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Run your schema in Apollo Router at the endpoint given in your configuration file.
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Use MCP Inspector, or in Claude Desktop, click the hammer icon to see the description generated for your tools.
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# Introspection
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You can optionally enable support for allowing the AI model to introspect the schema and formulate its own queries. It is recommended that this only be done with a Contract variant schema, so you can control what parts of your schema are exposed to the model.
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To enable this mode, add `--introspect` to the MCP server command line.
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Two new tools will be exposed by the server:
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* `introspect` - returns information about GraphQL schema types
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* `execute` - executes an operation on the GraphQL endpoint
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The MCP client can then use these tools to provide schema information to the model, and allow the model to execute GraphQL operations based on that schema.
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# Running in a Container
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The MCP server is also available as a standalone docker container. The following command
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demonstrates how to use the container. Refer to previous sections for all valid
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server arguments.
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# Apollo MCP Server
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By default, the container expects all schema files to be present in the
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`/data` folder within the container, so make sure to mount your files there. The
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example below uses the provided weather example for reference
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An [MCP](https://modelcontextprotocol.io/) Server to expose GraphQL operations as MCP tools.
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```sh
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docker run \
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-it --rm \
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--name apollo-mcp-server \
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-p 5000:5000 \
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-v $PWD/graphql/weather:/data \
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ghcr.io/apollographql/apollo-mcp:latest \
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--sse-port 5000 \
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-s api.graphql \
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# Other MCP server options...
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```
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See [the documentation](https://www.apollographql.com/docs/apollo-mcp-server/) for details.
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# Licensing
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‎scripts/nix/install.sh‎

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# Apollo MCP Server version defined in apollo-mcp-server's Cargo.toml
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# Note: Change this line manually during the release steps.
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PACKAGE_VERSION="v0.1.0-rc.0"
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PACKAGE_VERSION="v0.1.0"
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download_binary_and_run_installer() {
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downloader --check

‎scripts/windows/install.ps1‎

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# Apollo MCP Server version defined in apollo-mcp-server's Cargo.toml
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# Note: Change this line manually during the release steps.
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$package_version = 'v0.1.0-rc.0'
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$package_version = 'v0.1.0'
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function Install-Binary($apollo_mcp_server_install_args) {
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$old_erroractionpreference = $ErrorActionPreference

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