Files
PaperClipAI/server/src/adapters/hermes-gateway-doc.ts
Nicky LeachandPaperclip fdb9a4880d fix(security): route paperclipai CLI guidance through safe npx form (CWE-78) (#11400)
## Thinking Path

> - Paperclip is the open source app people use to manage AI agents for
work
> - Paperclip provides CLI commands and guidance for operators and
agents
> - The `pnpm paperclipai` script can pass argument values through a
shell
> - Shell re-parsing can execute command substitutions inside quoted
values
> - This pull request routes guidance through inert-argv `npx
paperclipai` commands and adds regression coverage
> - The benefit is safer operator guidance across documentation and
runtime hints

## Linked Issues or Issue Description

This pull request fixes a command-injection-class defect in Paperclip
CLI guidance.

**What happened?**

The `pnpm paperclipai <sub> --flag "$VALUE"` form can re-parse argument
values through a shell. A command substitution inside a quoted value can
execute on the host.

**Expected behavior**

Paperclip guidance must pass CLI values as inert argument values.
Host-derived values must not appear in copyable commands.

**Steps to reproduce**

1. Run a Paperclip guidance command that uses the `pnpm paperclipai`
script.
2. Provide a quoted value that contains a command substitution.
3. Observe that the shell can evaluate the substitution before the CLI
starts.
4. Compare the result with the `npx paperclipai` form.

**Paperclip version or commit**

`5670984b75d109950c968542a0111ebb6967f4da`

**Deployment mode**

All deployment modes that show or use the affected CLI guidance.

**Installation method**

Built from source and installed CLI guidance.

**Agent adapter(s) involved**

Not adapter-specific (core bug).

**Database mode**

Not database-related.

**Access context**

Both.

**Additional context**

The earlier merged PR
[#11343](https://github.com/paperclipai/paperclip/pull/11343) used the
unsafe `pnpm exec paperclipai` form. This fresh PR replaces that
guidance with the safe `npx paperclipai` form.

## What Changed

- Standardize documentation and runtime hints on `npx paperclipai`.
- Remove the broken `pnpm exec paperclipai` guidance.
- Use a static `<host>` placeholder in private-hostname guidance.
- Add regression tests for unsafe forms, continued lines, static hosts,
and offline guidance.

## Verification

- `git diff --check
origin/master...origin/fix/paperclipai-cli-npx-safe-invocation` passes.
- The branch adds `server/src/__tests__/cli-invocation-safety.test.ts`
and updates private-hostname tests.
- CI must run the new tests, typecheck, lint, and build checks.
- Local Vitest execution was not available because this worktree has no
installed Vitest binary.

## Risks

- The change affects operator and agent documentation text.
- The runtime hints now show `<host>` instead of a request-derived host
value.
- No database schema or migration changes exist.
- CI will detect any missed unsafe invocation or type error.

## Model Used

OpenAI GPT-5, exact model ID `gpt-5`, with tool use and code-review
assistance. The model used repository inspection, Git operations, and PR
preparation.

## Checklist

- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` / `Refs #` OR (b) described the issue in-PR following the relevant
issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] CI ran the test suites and they pass; local test execution was
unavailable in this worktree
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I addressed all Greptile and reviewer comments before requesting
merge

---------

Co-authored-by: Paperclip <noreply@paperclip.ing>
2026-08-14 22:11:16 -07:00

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5.1 KiB
TypeScript

export const hermesGatewayAgentConfigurationDoc = `# hermes_gateway agent configuration
Adapter: hermes_gateway
Use when:
- Hermes is already running outside Paperclip and exposes its API server.
- Paperclip should invoke Hermes through the gateway HTTP API instead of spawning Hermes locally.
- The Hermes runtime may live on another host, a private overlay, in Docker, or behind a TLS reverse proxy.
Don't use when:
- Paperclip should start the Hermes CLI directly on the same host. Use the built-in hermes_local adapter for that flow.
- Hermes is the process calling Paperclip APIs after claiming its key. That is Hermes-originated Paperclip API usage, not the gateway adapter transport.
Runtime distinction:
- hermes_local: Paperclip starts Hermes on the Paperclip host through the built-in local adapter.
- hermes_gateway: Paperclip calls an already-running Hermes API server using agentDefaultsPayload.apiBaseUrl.
- Hermes-originated Paperclip API usage: Hermes calls Paperclip with PAPERCLIP_API_URL and the Paperclip API key claimed through the standard join approval flow. Do not use agentDefaultsPayload.apiBaseUrl for Paperclip API calls. For internet-facing Hermes chat/webhook task bridges, use a separate task_bridge key instead of exposing the normal claimed agent key.
Hermes gateway process setup:
- Set API_SERVER_ENABLED=true.
- Set API_SERVER_KEY to a generated secret value. Do not paste a real key into tickets, docs, screenshots, or tests.
- Start Hermes with: hermes gateway run --replace --accept-hooks
- Default Hermes API server port: 8642.
- Default Hermes dashboard port: 9119. If Paperclip is configured with a default dashboard root or chat URL such as http://127.0.0.1:9119 or http://127.0.0.1:9119/chat, it maps the base URL to /api automatically.
- Watch out: /chat and the dashboard root are browser UI routes. Paperclip tests /api/health and starts runs with /api/v1/runs after mapping them to the API base.
Join request minimum:
{
"requestType": "agent",
"agentName": "My Hermes Gateway Agent",
"adapterType": "hermes_gateway",
"capabilities": "Hermes gateway agent",
"agentDefaultsPayload": {
"apiBaseUrl": "http://127.0.0.1:8642",
"apiKey": "<same-value-as-API_SERVER_KEY>",
"paperclipApiUrl": "http://localhost:3100"
}
}
Core fields:
- agentDefaultsPayload.apiBaseUrl (string, required): Base URL for the Hermes API server as reachable from the Paperclip server. A default dashboard root or chat URL such as http://127.0.0.1:9119 or http://127.0.0.1:9119/chat is accepted and maps to http://127.0.0.1:9119/api.
- agentDefaultsPayload.apiKey (string, required unless the adapter package documents another auth field): Hermes API server key matching API_SERVER_KEY. This is the Hermes gateway key, not the claimed Paperclip API key.
- agentDefaultsPayload.paperclipApiUrl (string, strongly recommended): Paperclip base URL as reachable from Hermes for invite, claim, skill bootstrap, and later Paperclip API calls.
- agentDefaultsPayload.timeoutSec or timeoutMs (number, optional): Runtime request timeout when supported by the installed Hermes gateway adapter.
Network examples:
- Local loopback on one host: agentDefaultsPayload.apiBaseUrl = "http://127.0.0.1:8642"; agentDefaultsPayload.paperclipApiUrl = "http://127.0.0.1:3100".
- Local dashboard root or chat URL on one host: agentDefaultsPayload.apiBaseUrl = "http://127.0.0.1:9119" or "http://127.0.0.1:9119/chat"; Paperclip maps it to "http://127.0.0.1:9119/api".
- LAN/private network: agentDefaultsPayload.apiBaseUrl = "http://192.168.1.25:8642"; agentDefaultsPayload.paperclipApiUrl = "http://192.168.1.10:3100". Use private IPs or hostnames reachable from both machines.
- Private overlay: agentDefaultsPayload.apiBaseUrl = "http://hermes-host.tailnet-name.ts.net:8642"; agentDefaultsPayload.paperclipApiUrl = "http://paperclip-host.tailnet-name.ts.net:3100". Add the Paperclip hostname with npx paperclipai allowed-hostname <host> when authenticated/private mode requires it.
- Docker: if Hermes runs on the host and Paperclip runs in Docker, use agentDefaultsPayload.apiBaseUrl = "http://host.docker.internal:8642". If Hermes runs in another container, use the Compose service DNS name such as "http://hermes:8642".
- Reverse proxy/TLS: publish Hermes behind HTTPS and set agentDefaultsPayload.apiBaseUrl = "https://hermes-gateway.example"; set agentDefaultsPayload.paperclipApiUrl = "https://paperclip.example". Keep API_SERVER_KEY required at the origin or proxy.
Security notes:
- Treat API_SERVER_KEY and PAPERCLIP_BRIDGE_API_KEY as secrets.
- When claiming the normal Paperclip agent API key, store the parsed token field from the raw claim response before printing or summarizing it. Hermes/tool displays may redact secrets with literal ... or [redacted]; those previews are not valid keys.
- Never use a normal claimed Paperclip agent API key for internet-facing Hermes-originated task bridge calls; task_bridge keys cannot use company-wide issue list/search/read surfaces and can only mutate bridge-created or assigned issues.
- Prefer private network or TLS for non-loopback gateway access.
- Use placeholders such as <same-value-as-API_SERVER_KEY> in docs and tests.
`;