prismsplit
PrismSplit lets your AI assistant manage shared expenses.
Community: Submitted by a user or imported; check the owner before granting accessOnlineNo sign-inGlobalFreeCan modify data
What it can do
- List Groups: List the bill-splitting groups the user belongs to (including 1:1 friend groups). Returns id, name, member_count, type. Use the id to filter list_bills.
- Get Balances: Get who owes whom from the user's point of view across all their groups. Positive = they are owed, negative = they owe. Money amounts, not advice.
- Get Quota: Get the user's plan tier and daily usage: bills created today, the daily bill limit, and how many bills they can still create today. Use this to answer "how many bills can I still create" b
What data it sees
Do you need an account
No: the server works without sign-in
PrismSplit lets your AI assistant manage shared expenses. Read your bill-splitting groups, bills, balances and spending stats; create equal-split bills; add members; and request settlements - using the same RPCs, RLS, limits and confirmations as the app. Money-writes require preview-then-confirm, and settlements only create a PENDING request the other person confirms in-app, so nothing moves money on its own.
Server tool list (20)
Raw names from tools/list. Only developers need these.
| list_groups | List the bill-splitting groups the user belongs to (including 1:1 friend groups). Returns id, name, member_count, type. Use the id to filter list_bills. |
| get_balances | Get who owes whom from the user's point of view across all their groups. Positive = they are owed, negative = they owe. Money amounts, not advice. |
| get_quota | Get the user's plan tier and daily usage: bills created today, the daily bill limit, and how many bills they can still create today. Use this to answer "how many bills can I still create" before creating one. Pass the user's IANA timezone for correct local-day reset. |
| list_bills | List recent bills, newest first. Optionally filter by group_id (from list_groups) and a created-at date window (ISO 8601). limit defaults to 20, max 100. |
| get_bill | Get one bill in full: totals, tax/tip/discount, items and per-person splits. Pass a bill_id from list_bills. |
| list_group_members | List the members of a group: member_id, user_id, and name. Use member_id for create_bill participant_member_ids, and user_id for record_payment other_user_id. Call this before splitting a bill among specific people or settling with someone. |
| get_group_stats | Spending summary for a group from the user's POV: monthly totals, lifetime totals, and per-member breakdown. Use for questions like "how much did we spend this month" or "who has paid the most". |
| list_settlements | List settlements (payments) in a group - history plus any pending ones awaiting confirmation. status is pending/confirmed/rejected. Use for "who still needs to confirm" or "what payments happened". |
| ping | Health check. Returns "pong" and server time. No data access. |
| preview_bill | Compute the exact equal split for a proposed bill and return a per-person breakdown plus a preview_token. ALWAYS call this first and show the breakdown to the user. Then pass the SAME values plus the preview_token to create_bill. No data is written. |
| create_bill | Create an equal-split bill paid by the user. Requires a preview_token from preview_bill and the SAME values. Splits the total equally among participants (or all group members). Subject to the same daily bill limit as the app. |
| preview_payment | Compute a settlement (who pays whom, how much) and return a preview_token. ALWAYS call this first and show it to the user. No data is written. |
| record_payment | Record a settlement between the user and another member. Requires a preview_token from preview_payment with the SAME values. This creates a PENDING request — the other person must confirm it in the PrismSplit app before any balance changes. It does not move money on its own. |
| add_item | Append a line item to an existing bill. Pass a bill_id from list_bills/get_bill. Note: this changes the bill — confirm with the user first. |
| create_group | Create a new bill-splitting group owned by the user. Returns the group id and an invite_code others can use to join. Use this to start a fresh trip/household/event. |
| add_member | Add a person to a group as a guest (someone without a PrismSplit account, so you can split bills with them). Registered users join via the invite_code instead. Returns the new member_id (usable in create_bill participants). |
| update_bill | Update a bill's metadata (title, category, merchant, location). Does NOT change amounts or splits - use the app for those. Pass only the fields to change. |
| delete_bill | Permanently remove a bill (soft delete). This is destructive and affects balances. You MUST set confirm=true, and you should confirm with the user first. |
| list_comments | List the comments/discussion on a bill. |
| add_comment | Post a comment on a bill (visible to the group, like the app's bill discussion). |