Browse / Invoicing and finance
Fungible
Keyboard-first personal finance TUI with Plaid sync and a built-in MCP server and HTTP API.
Fungible pulls bank transactions through Plaid or CSV into a local SQLite store and shows spending, trends, net worth and financial health in a terminal UI (a desktop GUI shares the data). The same 30-odd tools are exposed as an MCP server (stdio or HTTP) and a REST API, so Claude can categorize, tag, sync and report. MIT.
- I live in the terminal and want Claude to tidy my transactions and answer 'how much did I spend on travel'
- I want a local finance dataset my agent can query without a cloud budgeting service
- The desktop GUI does not start the MCP or API servers; use stdio MCP with the GUI
- Installers are un-notarized: Gatekeeper and SmartScreen warnings on first launch
- Deleting ~/.fungible/key means re-linking every bank
Last activity Sep 3, 2026. Fit: adaptable 2, operable 3.
Adaptable: what is yours to change
Make it yours
Config only11 things to edit
Run fungible --setup, then keep Plaid keys, optional model keys, API key and ports in ~/.fungible/.env. Rules and tags are data. Nothing else to change without editing the TypeScript.
- Env vars
PLAID_CLIENT_IDPLAID_SECRETPLAID_ENVANTHROPIC_API_KEYOPENAI_API_KEYFUNGIBLE_API_KEYFUNGIBLE_API_PORTFUNGIBLE_MCP_PORTFUNGIBLE_DATA_DIRFUNGIBLE_BACKUP_DAYS- Config files
~/.fungible/.env- Prompt files
- none
- Accounts you need
- Plaid developer account (sandbox is enough to try; production for real banks)Anthropic or OpenAI (optional assistant)
Source
- github.com/tomfunk/fungible
- MIT license
- Last commit Sep 3, 2026
- 108 stars
Operable: what an agent can drive
Interface
OfficialMCP serverpublished by the builderlocal
How an agent can drive an Operable Listing, in five levels: native (built for the agent as the primary interface), official (the Builder ships an agent interface), wrapped (a third party wraps the software's API), config (an agent can only drive it by editing files), gui (screen control only). An interface is official only when it is published by the same organization that ships the software. GUI-level Listings are allowed and sorted last.
- Docs
- github.com/tomfunk/fungible/blob/main/docs/integrations.md
- Tools
spending_summarylist_transactionsedit_transactionadd_rulesyncget_balancesget_financial_healthget_trendsgenerate_canvas
Reach
Partial coverage. 8 of 11 jobs reachable through the stated interface.
| Job | Through the interface | Evidence |
|---|---|---|
| Sync transactions from Plaid | Reachable | tool sync |
| Import CSV statements | Not reachable | no import tool in docs/integrations.md; CSV import is a TUI flow |
| Categorize and rename with rules | Reachable | tools add_rule, add_name_rule, edit_transaction |
| Search transactions | Reachable | tool list_transactions |
| Tags and tag summaries | Reachable | tools tag_transaction, tag_summary, list_tags |
| Net worth history | Reachable | tools get_balances, get_net_worth_history |
| Financial health (runway, FIRE) | Reachable | tool get_financial_health |
| Trends and delta mode | Reachable | tools get_trends, get_drift |
| Manual assets | Undetermined | README feature; no dedicated tool listed |
| Dedup review of CSV vs Plaid | Not reachable | TUI-only screen; no tool |
| Canvas visualizations | Reachable | tools generate_canvas, show_canvas, list_canvases |
Code stack
- Languages
- TypeScript
- Frameworks
- Ink (TUI)Electron (GUI)
- Package manager
- npm
- Database
- SQLite
- Hosting target
- local machine (Homebrew, installers)
- Built
- Unknown (recorded, never ranked)
Model stack
- Providers
- AnthropicOpenAI
- Models
- none
- Keys you need
ANTHROPIC_API_KEYOPENAI_API_KEY- Prompts live in
- none
Evidence and confidence
| Field | Where it was seen | Confidence |
|---|---|---|
| formFactor | terminal UI in TypeScript; a separate Electron GUI shares the data (README) | 90% |
| executionModel | deterministic finance tools; optional AI assistant with model keys in .env.example | 85% |
| operability | mcp/server.ts in repo, documented in docs/integrations.md by the Builder | 95% |
| effort | .env.example and README Storage/Running sections name the variables | 85% |
| editions | MIT, free; no paid edition | 95% |
| active | GitHub pushedAt 2026-09-03 | – |
| reach | 90% |
Open questions
- Whether manual assets are editable through any tool
Sources
- github.com/tomfunk/fungible sourcing:invoicing-finance:github
- github.com/tomfunk/fungible/blob/main/docs/integrations.md analysis:invoicing-finance