Negotiated 2025-11-25. The bar is 2025-06-18 or newer.
Pass
HTTPS
The endpoint URL is https.
Performance
Not measured
Fast (p50)
Median latency 128 ms over 2 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.
Not measured
Consistent (p95)
95th percentile 141 ms over 2 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.
Not measured
Reliable (uptime)
2 of 2 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.
Pass
Stable tool list
No tool was removed and no required parameter was added in the last 30 days.
Access
Pass
Open access
tools/list succeeded with no credential, and the record declares none.
Not measured
Standard auth
Auth is not required, so the OAuth metadata check does not apply.
Not measured
Free tier cited
No publisher quote has been checked.
Tools
Pass
Tools described
Every tool description is at least 20 characters.
Pass
Valid input schemas
Every inputSchema is a JSON Schema object.
Pass
Parameters documented
88 of 88 parameters have a description (100%). The bar is 80%.
Pass
Safety hints
Every tool sets readOnlyHint or destructiveHint.
Publisher
Pass
Verified namespace
Listed in the Official MCP Registry.
Pass
Website matches publisher
The website host matches the reverse-domain namespace.
Pass
Source repo linked
A repository URL is on file.
Not measured
Repo owner matches
This namespace is not an io.github login, so the owner comparison does not apply.
Pass
Recently updated
Updated 2026-09-07T23:08:48.268418Z, within 180 days.
Not measured
Open-source licence
The GitHub licence lookup has not returned an OSI result yet.
Start using VolunteerReminder
Connect to this server
Choose your client, copy the configuration, then enable the server in your client’s MCP settings.
Run this command in your terminal, then restart Claude Code.
Claude Code
claude mcp add --transport http volunteerreminder https://mcp.volunteerreminder.com/mcp
Capabilities
Tools 23
add_contacts
Add one or more volunteers to the roster in a single call. ALL-OR-NOTHING: if the batch would push the account past its plan's volunteer limit, or any contact references a group_id not on this account, NOTHING is added and the error names the limit/count/bad id so you can adjust. Phone numbers are validated and normalized to E.164. Adding a mobile number needs consent_attested=true (ask the user to confirm the volunteers agreed to texts). To put new volunteers on a shift, follow with assign_contacts_to_schedule. Requires the `contacts:write` scope.
Discovered archive_schedule
Archive (soft-delete) a schedule. It stops appearing in the active list and no further reminders go out for it, but past reminder history is preserved. This is reversible only from the dashboard. Confirm with the user before archiving. Requires the `schedules:write` scope. If calendar invites are on for the account, assigned volunteers may get a new, updated or cancelled calendar invite by email (in test mode it goes to the owner instead).
Discovered assign_contacts_to_schedule
Assign volunteers to a schedule. This REPLACES the schedule's entire roster — send the COMPLETE desired set of contact ids, not a delta (pass an empty array to clear it). Every id must belong to this account or the whole request is rejected with the offending ids named. Does not change occurrences. Requires the `contacts:write` scope. If calendar invites are on for the account, assigned volunteers may get a new, updated or cancelled calendar invite by email (in test mode it goes to the owner instead).
Discovered create_account
Start a new VolunteerReminder account for a human, using their email address. This does NOT finish signup and does NOT return an API key: it emails the person a verification link they must click to activate the account. Nothing can be built on the account and no reminders can ever send until they verify — and even then a new account starts in safe `test` mode (reminders reach only the owner, never volunteers) until a human turns on live sending from the dashboard. Calling it again with the same email sends another verification email and creates no second account. After the user tells you they've verified, they mint an API key from the dashboard and reconnect this connector with it. Tell the user to check their email.
Discovered create_schedule
Create a recurring (or custom-date) schedule and materialize its upcoming occurrences. Best practice: call preview_schedule_occurrences with the same recurrence settings first and confirm the dates with the user. This tool returns the created schedule AND an inline preview of its next occurrences so you can show what was set up. You can optionally seed the roster with contact_ids at creation. Requires the `schedules:write` scope. If calendar invites are on for the account, assigned volunteers may get a new, updated or cancelled calendar invite by email (in test mode it goes to the owner instead).
Discovered get_account_overview
Read the current VolunteerReminder account: organization name, plan and entitlements, current reminder send mode, and volunteer usage vs the plan limit. Call this first to understand what the account can do before creating schedules or contacts. Note the `reminder_mode`: an account created through this connector (create_account) starts in `test` (reminders reroute to the owner, never to volunteers); only a human can switch it to `live` from the dashboard. `effective_mode` is what actually happens at send time.
Discovered get_open_days
List calendar days in the look-ahead window that have no attendable shift yet, plus recurring monthly slots not yet claimed by a schedule — i.e. where the account still needs volunteers. Requires the `read` scope.
Discovered get_pricing
Read VolunteerReminder's public plan catalog: each plan's monthly and annual price (USD), volunteer limit, and included features (SMS reminders are included with no per-message credits or metering). No API key required — use this to help a user comparison-shop or decide which plan fits before they sign up.
Discovered get_reminder_settings
Read the account's reminder lead times (the account-wide default plus any per-job overrides) and which channels (email / SMS) are available on the current plan. Reminder overrides are per JOB, not per individual schedule. Requires the `read` scope.
Discovered get_schedule
Get one schedule's full configuration: recurrence settings, job/role, group, roster (contact ids), start/end dates, and notes. Requires the `read` scope.
Discovered get_send_history
Read recent reminder outcomes — which reminders were sent and which failed — newest first, paginated. Use this to confirm reminders actually went out. Requires the `read` scope.
Discovered get_upcoming_shifts
Who is volunteering when. Lists upcoming shifts with date/time, schedule, whether that date is still on, and the rostered volunteers' names. Omit `schedule_id` to cover EVERY active schedule in one call (best for questions like "who is on this Sunday?": pass from and to as that same date). A bare "yyyy-MM-dd" `to` includes that whole day. Requires the `read` scope.
Discovered import_volunteer_schedule
Parse a pasted or uploaded volunteer roster + schedule (CSV or a table with columns like name, phone, email, job/role, day, start, end) and either PREVIEW or CREATE the contacts, schedules, and assignments. Always call first with confirm=false and show the user the upcoming shifts; only call again with confirm=true, passing back preview_token from that preview, after they approve. Import is test-mode only and is refused on some accounts. Use create_account first if they do not have an account — do not invent a second signup path. This tool never changes reminder mode, never enables the confirm loop or substitute finder, and never texts real volunteers. New accounts stay in test mode. Requires `read` for preview; `schedules:write` and `contacts:write` to commit. Set consent_attested=true on commit when any row has a phone number (the coordinator affirms the volunteers agreed to be texted). If calendar invites are on for the account, assigned volunteers may get a new, updated or cancelled calendar invite by email (in test mode it goes to the owner instead).
Discovered list_contacts
List all volunteers on the account's roster, each with contact details and group. Requires the `read` scope.
Discovered list_schedules
List all active (non-archived) schedules on the account, each with its description, job/role (name and job_id), next upcoming occurrence, and how many volunteers are rostered. Requires the `read` scope.
Discovered preview_schedule_occurrences
PURE and side-effect-free: computes the next occurrence dates a recurrence configuration WOULD produce, without creating anything. Use this to show the user the concrete dates (e.g. 'the next 8 Tuesdays at 9:00 AM Central') and get their confirmation BEFORE calling create_schedule. Requires the `read` scope.
Discovered remove_contact
Remove (soft-delete) a volunteer from the roster. This frees a volunteer-cap slot and removes them from any schedule rosters they were on. Confirm with the user before removing. Requires the `contacts:write` scope. If calendar invites are on for the account, assigned volunteers may get a new, updated or cancelled calendar invite by email (in test mode it goes to the owner instead).
Discovered remove_reminder_rule
Remove a reminder lead-time rule. Provide `job_id` to remove that job's override; omit it to clear the account-wide default. Returns the updated reminder settings. Requires the `reminders:write` scope.
Discovered send_test_reminder
Send a single TEST reminder to the account owner's own email so they can preview what a reminder looks like. This never reaches volunteers — it always reroutes to the owner. Optionally pass a schedule_id to preview that schedule's reminder; otherwise a generic sample is sent. It is a real message that cannot be unsent, so confirm with the user first. Requires the `reminders:write` scope.
Discovered set_reminder_rule
Set the reminder lead time: the account-wide default and/or a per-job override. Provide at least one of `global_default` or `job_override`, and set at least one of days/hours/minutes greater than zero. Overrides are per JOB (a job may back several schedules); get the job_id from list_schedules. Replaces any earlier override for that job. Requires the `reminders:write` scope.
Discovered start_checkout
Get a Stripe-hosted Checkout URL for the account to subscribe to a paid plan, then HAND THE URL TO THE HUMAN to open and complete payment. You never take payment yourself and never see card details. Use get_pricing first to pick a plan. Fails if the account already has an active subscription (manage that from the billing dashboard). Requires a connected API key (any scope with `read`).
Discovered update_contact
Update a volunteer's details. Send only the fields you want to change; a field set to null clears it. Requires the `contacts:write` scope. If calendar invites are on for the account, assigned volunteers may get a new, updated or cancelled calendar invite by email (in test mode it goes to the owner instead).
Discovered update_schedule
Partially update a schedule — send only the fields you want to change; unset fields keep their current value. Changing recurrence fields recomputes and re-materializes future occurrences. If the change would remove upcoming shifts, nothing is saved and the tool returns confirm_remove_required with the `removed` dates and a `confirm_token`. Show the user those dates; only if they agree, call again with the same changes plus confirm_remove: true and that confirm_token. This tool does NOT change the roster; use assign_contacts_to_schedule for that. Requires the `schedules:write` scope. If calendar invites are on for the account, assigned volunteers may get a new, updated or cancelled calendar invite by email (in test mode it goes to the owner instead).