CharlieHR MCP server

Read CharlieHR team members, leave, allowances, offices, teams and salaries; add team member notes. Hosted by usefulapi — connect from Claude, ChatGPT, Cursor, or any MCP client.

Claude claude.ai · Desktop

  1. Open Customize → Connectors, then click + Add → Add custom connector.
  2. Enter the name CharlieHR and this URL, then click Add:
    https://charliehr.usefulapi.io/mcp
  3. Claude opens the login page: enter your CharlieHR client id and CharlieHR client secret.
  4. In a chat, click + → Connectors and turn on CharlieHR.

Team and Enterprise: an Owner adds the connector for the organization first.

Claude Code

Run this command, then run /mcp in Claude Code to log in:

claude mcp add --transport http charliehr https://charliehr.usefulapi.io/mcp

Cursor

Add to Cursor or add this to ~/.cursor/mcp.json:

{
  "mcpServers": {
    "charliehr": {
      "url": "https://charliehr.usefulapi.io/mcp"
    }
  }
}

VS Code

Add to VS Code or add this to .vscode/mcp.json:

{
  "servers": {
    "charliehr": {
      "type": "http",
      "url": "https://charliehr.usefulapi.io/mcp"
    }
  }
}

ChatGPT chatgpt.com

  1. Open Plugins, click +, then Add custom MCP server.
  2. Enter the name CharlieHR and this URL, choose OAuth as the authentication, confirm the warning and create it:
    https://charliehr.usefulapi.io/mcp
  3. ChatGPT opens the login page: enter your CharlieHR client id and CharlieHR client secret.
  4. In Plugins, install CharlieHR, then choose it in a chat.

No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.

Codex

Run these commands. The second one opens the login page:

codex mcp add charliehr --url https://charliehr.usefulapi.io/mcp
codex mcp login charliehr

Other MCP clients (Windsurf, Cline, Zed and more): add the URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser. Do not add an Authorization header: see Before you connect.

live31 toolsFree 50 tool calls / monthPro $9/mo · $90/yr

Before you connect

The login page asks for your CharlieHR client id and CharlieHR client secret.

In Charlie open Company → Integrations → API keys (a Super Admin or Admin) and generate a key pair; the secret is shown only once. The keys act for your whole company. Your keys are used only to call the CharlieHR API on your behalf; they are never shown to anyone.

Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your CharlieHR client id and CharlieHR client secret. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.

Example prompts

Turn on the CharlieHR connector, then ask in plain words. The AI picks the tools.

Tools 31

ToolTypeWhat it does
charliehr_get_companyread
Get company
The Charlie company the API keys belong to: id, name, subdomain and logo. GET /company.
charliehr_list_officesread
List offices
List the company's offices: id, name, whether it is the head office, address, timezone, phone and email. GET /offices.
charliehr_get_officeread
Get office
One office by id. GET /offices/{id}.
charliehr_list_teamsread
List teams
List the company's teams with the ids of their team members. GET /teams.
charliehr_get_teamread
Get team
One team by id, with the ids of its team members. GET /teams/{id}.
charliehr_list_team_membersread
List team members
List the company's team members (employees): name, work and personal email, phone, address, office, manager, teams, job title, start date, employment status and leaving date. Sensitive fields included: date_of_birth, gender, married, personal email, phone and home address. National Insurance numbers, payroll id, starter declaration and student-loan flags are never returned. GET /team_members.
charliehr_get_team_memberread
Get team member
One team member by id with the full profile (contact details, address, office, manager, teams, dates, employment status, job title, notes). Sensitive fields included: date_of_birth, gender, married, personal email, phone, home address and notes. National Insurance numbers (also inside notes), payroll id, starter declaration and student-loan flags are never returned. GET /team_members/{id}.
charliehr_get_team_member_working_locationread
Get a team member's working location
Where one team member works on a date (custom overrides win over the default assignment). Defaults to today. GET /team_members/{id}/working_location.
charliehr_get_team_member_working_weeksread
Get a team member's working weeks
The working-week segments of one team member (which days are full_day/morning/afternoon, weekly hours, from/to dates), company defaults and custom overrides. Not paginated. GET /team_members/{id}/working_weeks.
charliehr_list_working_locationsread
List working locations
List the active working locations (the catalog). With a date, instead returns where each active team member works on that date. GET /working_locations.
charliehr_list_leave_requestsread
List leave requests
List leave requests of the whole company (id, team member, approver, status, request type, start/end date, amount and units, duration, details). Optionally only those in a date window. GET /leave_requests.
charliehr_get_leave_requestread
Get leave request
One leave request by id. GET /leave_requests/{id}.
charliehr_list_team_member_leave_requestsread
List a team member's leave requests
The leave requests of one team member, optionally only those in a date window. GET /team_members/{id}/leave_requests.
charliehr_list_leave_allowancesread
List leave allowances
The current holiday allowance of every team member: allowance, used and remaining, in days and hours, with the leave period. GET /leave_allowances.
charliehr_get_team_member_leave_allowanceread
Get a team member's leave allowance
The current holiday allowance of one team member (allowance, used, remaining, in days and hours, with the period). GET /team_members/{id}/leave_allowance.
charliehr_list_allowance_adjustmentsread
List a team member's allowance adjustments
All holiday allowance adjustments of one team member across every leave period (description, days/hours, carryover flag, creator, period). GET /team_members/{id}/allowance_adjustments.
charliehr_list_non_holiday_leave_allowancesread
List a team member's non-holiday leave allowances
Days taken and limit for each non-holiday leave type (sick, compassionate...) of one team member. GET /team_members/{id}/non_holiday_leave_allowances.
charliehr_list_leave_typesread
List leave types
The enabled leave types (Holiday, Sick...): id, name, deductible, default, auto-approved, sensitive. GET /leave_types.
charliehr_get_leave_typeread
Get leave type
One leave type by id. GET /leave_types/{id}.
charliehr_list_company_holidaysread
List company holidays
The company's holidays (bank holidays and closures): name, start/end date, duration, deductible. Optionally only those in a date window. GET /company_holidays.
charliehr_list_restricted_datesread
List restricted dates
The dates on which leave is restricted (e.g. a year-end freeze): name, start/end date, duration. Optionally only those in a date window. GET /restricted_dates.
charliehr_list_salariesread
List salaries
SENSITIVE: the salary records of all team members (job title, pay rate, pay period, frequency, currency, effective date, employment type). Needs API keys with access to salary data. GET /salaries.
charliehr_list_team_member_salariesread
List a team member's salaries
SENSITIVE: the salary history of one team member (job title, pay rate, currency, effective date). GET /team_members/{id}/salaries.
charliehr_list_team_member_note_typesread
List team member note types
The custom note types (fields such as Employee No. or Laptop Serial Number) with who may see them. GET /team_member_note_types.
charliehr_get_team_member_note_typeread
Get team member note type
One note type by id. GET /team_member_note_types/{id}.
charliehr_list_team_member_notesread
List a team member's notes
The custom notes (label and content) stored on one team member (the content of a note labelled as a National Insurance number, and NI-number-looking text, is redacted). GET /team_members/{id}/notes.
charliehr_create_team_member_notewrite
Add a note to a team member
WRITE: add a custom note (a value for one note type, e.g. an employee number) to a team member in Charlie. It is created immediately and visible to whoever the note type's permissions allow. Use charliehr_list_team_member_note_types for the note type id. POST /team_members/{id}/notes.
charliehr_usage_statusmeta
Usage status (free-tier meter)
Report the caller's current free-tier usage this month: calls used, monthly limit, remaining, and whether the cap is reached. Read-only; does not count against the meter.
charliehr_request_featuremeta
Request a missing feature
Tell usefulapi that the user needs something the CharlieHR tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter.
charliehr_upgrademeta
Upgrade to Pro (unlimited)
Subscribe to the Pro plan for UNLIMITED CharlieHR tool calls (the free tier caps monthly usage). Choose monthly ($9/month) or yearly ($90/year — 2 months free) billing. Returns a short link to open in your browser (it opens Stripe Checkout); after payment your account upgrades automatically. Does not count against the meter.
charliehr_cancel_subscriptionmeta
Cancel the Pro subscription
Cancel the caller's CharlieHR Pro subscription at the end of the paid period (no refund for the current period; unlimited calls continue until then, then the free tier applies). Requires confirm: true. Run charliehr_upgrade later to undo the cancel before the period ends. Does not count against the meter.

Pricing

PlanPriceLimit
Free$050 tool calls / month
Proper company$9/mo · $90/yrUnlimited

Pro covers this CharlieHR server only. Subscribe with charliehr_upgrade (it returns a Stripe Checkout link). Cancel any time with charliehr_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running charliehr_upgrade before then undoes the cancel. Or write to [email protected].

FAQ

Is this an official CharlieHR product?

No. usefulapi is an independent service. It is not affiliated with or endorsed by CharlieHR. The server calls the CharlieHR API with your own CharlieHR access, so it sees only the data that your account can see.

Can I connect CharlieHR to Claude or ChatGPT?

Yes. In Claude, add this server's URL as a custom connector. In ChatGPT, add it as a custom MCP server in Plugins. Then log in once. Cursor, VS Code, Claude Code and Codex work too. See the setup steps.

What do I need to connect?

The login page asks for your CharlieHR client id and CharlieHR client secret. See Before you connect for where to find them.

Do I put my CharlieHR key or an Authorization header in the client config?

No. Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your CharlieHR client id and CharlieHR client secret. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.

How do you keep my CharlieHR credentials?

The login stores them encrypted in the authorization grant of your connection. The server uses them to call the CharlieHR API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in CharlieHR.

Can the AI change my CharlieHR data?

Yes, if you approve it. 1 of the 27 CharlieHR tools can create or change data. The other 26 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.

What does it cost?

The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with unlimited tool calls, for this CharlieHR server only. Run charliehr_usage_status to see how many calls you used.

How do I subscribe or cancel?

Ask the AI to run charliehr_upgrade: it returns a Stripe Checkout link. To cancel, run charliehr_cancel_subscription. Pro continues to the end of the paid period.

What if a CharlieHR tool that I need is missing?

Tell the AI what you wanted to do. It can send the request with charliehr_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.

Which AI clients can I use?

Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, ChatGPT, Codex, Cursor, VS Code, Windsurf and others.

This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.

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