skills/setup-slack-channel/references/secrets-and-credentials.md
Six different values are in play and they have four different owners. Most setup failures — and every setup leak — come from putting a value somewhere its owner never intended.
| Value | Shape | Issued by | Its one correct home | Never put it |
|---|---|---|---|---|
| Slack bot token | xoxb-… | The Slack app, on install | The Slack adapter form in Intelligence, typed by the developer | In .env, in the repo, in chat |
| Slack signing secret | 32-char hex | The Slack app, Basic Information → App Credentials | The Slack adapter form in Intelligence, typed by the developer | In .env, in the repo, in chat |
| Intelligence runtime API key | cpk-… | The Intelligence project (API Keys) | The app's .env as INTELLIGENCE_API_KEY | In the repo, in chat |
| OpenAI key | sk-… | platform.openai.com | The agent's env as OPENAI_API_KEY | In the repo, in chat |
| Slack user token | xoxp-… | The Slack app, user scopes | .env, only for the optional E2E harness | Anywhere else |
BOT_USER_ID, E2E_CHANNEL | U…, C… | Slack workspace | .env for the E2E harness | — Not secrets |
The load-bearing split: Slack credentials go to Intelligence, not to your app.
A managed Channel holds no platform credentials. If you find yourself adding
SLACK_BOT_TOKEN to the app's .env to make a managed Channel work, you have
taken a wrong turn — see intelligence-channel.md.
There is no Slack app-level (xapp-) token in this workflow. Managed delivery
reaches Intelligence over HTTPS, not Socket Mode, so the pair Intelligence needs
is bot token + signing secret. If you are hunting for connections:write, stop
and re-read SKILL.md.
Never ask the developer to paste a secret into the conversation. Not to "check the format", not to "verify it's the right one", not because they offered. A developer offering tokens is common and is not permission — decline and redirect to the correct destination:
I don't need those and shouldn't have them. The bot token and the signing secret go straight into the Slack adapter form in Intelligence, entered by you. I'll tell you exactly which field each one goes in.
Some pages leak by simply being looked at. The Slack app's Install App
page (/apps/<id>/install-on-team) renders the bot token in plain text, not
masked. A screenshot, an accessibility-tree read, or a page-text extraction of
that page captures a live credential into the transcript. Treat it as
off-limits: do not open it to "check" anything. When you must confirm a token
exists, test for its shape and report a boolean — never the value:
// Returns true/false. Never returns token material.
/xoxb-[A-Za-z0-9-]+/.test(document.body.innerText);
The Channel adapter form is safe by contrast: its fields are type="password".
And if a token does reach the transcript, the app's Reinstall flow rotates
the bot token, which is the fastest real remediation — but say so out loud first.
Never print, echo, cat, or grep a secret's value. Check presence, never
content. This prints names and nothing else:
# Which required vars are set — values never leave the shell.
for v in INTELLIGENCE_API_KEY AGENT_URL OPENAI_API_KEY; do
[ -n "${!v:-}" ] && echo "$v: set" || echo "$v: MISSING"
done
To inspect the app's config, read .env.example — it documents every
variable by name with no live values. Read .env itself only when you need to
know whether a variable is set, report only the variable names, and never
quote a value or a value fragment back to the developer or into a file.
Never use the runtime API key to call Intelligence HTTP endpoints. It is a
project-scoped key for gateway activation, not a dashboard session. Verified:
GET /api/channels with Authorization: Bearer cpk-… returns
CLERK_TOKEN_INVALID. Probing with it tells you nothing, spends a live
credential on an unrelated service, and risks a response body containing
platform tokens. Channel state comes from two places only: the dashboard in the
developer's browser, and controls.status() in the process.
Never commit a secret. Before writing any env file, confirm it is ignored:
git check-ignore -v .env
No output means .env is not ignored — stop and fix .gitignore before
writing anything into it.
Let the developer type it. When a value must land in a file, tell them the file, the variable name, and the format, and have them add it themselves. Then verify with a presence check. This costs one extra round trip and removes the whole class of leak where a secret passes through the transcript.
Say this plainly when it applies, because it changes how careful someone is:
If a token reaches the conversation, a log, or a commit, say so immediately and plainly, and tell the developer to rotate it — Slack tokens from the app's config page, the Intelligence key from API Keys. Do not quietly continue: a leaked token in a transcript is a live credential. Do not attempt to scrub it yourself as a substitute for rotation.