Atlas / MCP servers / apollographql / Apollo

ApolloCAUTION

mcp/apollographql/apollo

Apollo MCP Server

Verdict
CAUTION
Grade
C
Trust score
77 /100
Exposed tools
—
Transport
stdio · streamable-http
License
MIT
Stars
310
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

[](https://mcptoplist.com/server/io.github.apollographql%2Fgraphos-mcp-tools)

[](https://codecov.io/github/apollographql/apollo-mcp-server)

Apollo MCP Server is a Model Context Protocol server that exposes GraphQL operations as MCP tools. It provides a standard way for AI models to access and orchestrate your APIs running with Apollo.

Documentation

See the documentation for full details. This README shows the basics of getting this MCP server running. More details are available on the documentation site.

Installation

You can either build this server from source, if you have Rust installed on your workstation, or you can follow the installation guide. To build from source, run cargo build from the root of this repository and the server will be built in the `target/deb

Read from source at commit 991b4117191fOBSERVED · 2026-10-05
02

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control.

claude-code (oci)
claude mcp add apollo-mcp-server:v1.20.0 -- docker run -i --rm ghcr.io/apollographql/apollo-mcp-server:v1.20.0:None /config.yaml
03

Trust audit

CAUTIONgrade C · trust 77/100 Install with care. The audit found things worth knowing before you trust its output.

LayerWhat it checksResult
L0Provenance & inventoryWARN
L1Static analysis of the codeWARN
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfacePASS
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
declared (1 observation(s))
Network
declared (11 observation(s))
Shell
none-observed
Dependencies
pinned
Secrets in source
none-found

Findings (25)

MEDIUMInventory / provenance · inv.symlink · CWE-1104
.claude/skills/mcp-apps-sync-docs
.claude/skills/mcp-apps-sync-docs
Why it matters. link not followed
MEDIUMInventory / provenance · inv.symlink · CWE-1104
.claude/skills/rust-best-practices
.claude/skills/rust-best-practices
Why it matters. link not followed
MEDIUMNetwork egress · net.raw_ip · CWE-200, CWE-319
crates/apollo-mcp-registry/src/platform_api.rs:194
let result = client.get("http://192.0.2.1:1").send().await;
MEDIUMNetwork egress · net.raw_ip · CWE-200, CWE-319
crates/apollo-mcp-rhai/src/functions/http.rs:294
let response = Http::get("http://127.0.0.1:1").wait();
MEDIUMObfuscation / stealth · obf.base64_blob · CWE-506, CWE-94
crates/apollo-mcp-server/src/explorer.rs:137
@"https://studio.apollographql.com/graph/mcp-example/variant/mcp/explorer?explorerURLState=N4IgJg9gxgrgtgUwHYBcQC4QEcYIE4CeABAOIIoDqCAhigBb4CCANvigM4AUAJOyrQnREAyijwBLJAHMAhAEoiwADpIiRaqzwdOfAUN78UCBc
LOWInventory / provenance · inv.hidden_file · CWE-1104
e2e/conformance/apps/conformance/.application-manifest.json
.application-manifest.json
Why it matters. hidden member outside the usual dotfiles
Fix. review its purpose
LOWInventory / provenance · inv.symlink · CWE-1104
CLAUDE.md
CLAUDE.md
Why it matters. link not followed
LOWNetwork egress · net.raw_ip · CWE-200, CWE-319
CHANGELOG.md:966
endpoint: "http://127.0.0.1:4317"
LOWNetwork egress · net.raw_ip · CWE-200, CWE-319
CHANGELOG.md:972
endpoint: "http://127.0.0.1:4317"
LOWNetwork egress · net.raw_ip · CWE-200, CWE-319
CHANGELOG.md:1588
endpoint: http://127.0.0.1:4000
LOWPrompt injection · prompt.credential_read · CWE-94, CWE-1427
docs/source/auth.mdx:25
Apollo MCP Server validates signed JWT bearer access tokens; it doesn't support opaque access tokens. Each JWT must contain a `kid` header, as well as `exp` and `sub` claims. The token must also conta
Why it matters. asks the agent to read credentials
LOWPrompt injection · prompt.credential_read · CWE-94, CWE-1427
docs/source/cors.mdx:70
You can enable credentials with CORS by setting the `Access-Control-Allow-Credentials` HTTP header to `true`.
Why it matters. asks the agent to read credentials
LOWPrompt injection · prompt.credential_read · CWE-94, CWE-1427
docs/source/cors.mdx:110
# Set to true to add the `Access-Control-Allow-Credentials` header
Why it matters. asks the agent to read credentials
LOWPrompt injection · prompt.credential_read · CWE-94, CWE-1427
docs/source/limitations.mdx:35
The base request path sends GraphQL as a structured JSON HTTP request and doesn't invoke an operating-system shell or child process from MCP tool input. Operator-provided Rhai scripts run before outgo
Why it matters. asks the agent to read credentials
LOWPrompt injection · prompt.credential_read · CWE-94, CWE-1427
docs/source/quickstart.mdx:42
1. Choose the environment-specific command to load environment variables from the provided `.env` file and start the MCP server.
Why it matters. asks the agent to read credentials
LOWSupply chain · prompt.pipe_to_shell · CWE-829, CWE-1357
docs/source/guides/auth-auth0.mdx:22
curl -sSL https://rover.apollo.dev/nix/latest | sh
LOWSupply chain · prompt.pipe_to_shell · CWE-829, CWE-1357
docs/source/run.mdx:36
curl -sSL https://mcp.apollo.dev/download/nix/latest | sh
LOWSupply chain · prompt.pipe_to_shell · CWE-829, CWE-1357
docs/source/run.mdx:58
curl -sSL https://mcp.apollo.dev/download/nix/v1.20.0 | sh
LOWSupply chain · prompt.pipe_to_shell · CWE-829, CWE-1357
docs/source/run.mdx:81
curl -sSL https://mcp.apollo.dev/download/nix/v1.20.0-rc.1 | sh
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
CHANGELOG.md:87
Requests that stream a response — every tool call — now report the full request duration rather than the time to the response head, because the span stays open until the body finishes. This is the dur
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
CHANGELOG.md:383
The MCP server could become completely unresponsive to POST /mcp requests after hours of uptime while /health remained responsive. This occurred when a peer's transport entered a half-closed state (e.
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
docs/source/auth.mdx:163
Apollo MCP Server reads the standard `scope` claim first. This claim is a space-separated string, defined in [RFC 6749](https://datatracker.ietf.org/doc/html/rfc6749) and [RFC 9068](https://datatracke
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
docs/source/config-file.mdx:108
Avoid header forwarding for sensitive credentials like API keys or access tokens. Apollo MCP Server logs a warning when you forward sensitive headers such as `Authorization`, `Cookie`, `Proxy-Authoriz
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine
LOWPrompt injection · prompt.transfer_instruction · CWE-94, CWE-1427
docs/source/cors.mdx:82
**To support credentialed requests, your server's config file must specify individual `origins` or `match_origins`**. If your server enables `allow_any_origin`, your browser will refuse to send creden
Why it matters. an instruction to move sensitive data to an outside destination
Fix. remove; a skill never needs the user's secrets off the machine
LOWInventory / provenance · mcp.no_tools_extracted · CWE-1104
server.json
Why it matters. the tool list is enumerated at runtime by tools/list, not declared in source
Fix. the page says so rather than showing an empty table

Gates applied: no_behavioural_pass.

Audited 2026-10-05 · audit v0.4.1 · source sha 991b4117191ffull audit observations/trust-audit/mcp-server/apollographql__apollo.json · Report an issue / request a re-scan
04

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-05991b4117191fCAUTIONC77first audit
05

Questions

What is the Apollo MCP server?

Apollo MCP Server

Is Apollo safe to connect to an agent?

With care. The audit graded it C (77/100) and found 25 things worth knowing before you trust this server, listed below with the exact line each was found on.

What credentials does Apollo need?

No credential environment variables were found in its source, so it appears to need none.

How does Apollo run?

It speaks stdio and streamable-http, so it runs as a local process your client starts. It is published on npm as apollo-mcp-server-conformance.

How current is this page?

The grade is for one exact copy of the source (991b4117191f), read on 2026-10-05. The repository is watched and re-audited when it changes.

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