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Agent skill

Fondo Local Dev Loop

by jeremylongshore in jeremylongshore/tons-of-skills-marketplace

Configure local development workflows that integrate with Fondo for financial data, using Fondo exports with QuickBooks or accounting tools.

MITAuto-check: notesBusiness, Finance & HR

Install Fondo Local Dev Loop

skills CLI
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill fondo-local-dev-loop -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install jeremylongshore/tons-of-skills-marketplace fondo-local-dev-loop --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/.curated/fondo-local-dev-loop .claude/skills/fondo-local-dev-loop && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
fondo-local-dev-loop
GitHub stars
2.8k
Token cost
~1.3k tokens
SKILL.md length
342 words
Files
1
Skills in repo
3,342
Repo updated
First seen
Licence
MIT

At a glance

Configure local development workflows that integrate with Fondo for financial data, using Fondo exports with QuickBooks or accounting tools.

  • Works in 3 steps: Keep mock mode enabled for normal… → Validate schema and field mappings… → Redact logs, avoid committing exports,…
  • Tasks that involve Accounting and bookkeeping
  • SKILL.md covers Overview, Prerequisites, Instructions and Output, plus 9 more sections
  • Calls npm; needs FONDO_API_KEY

What it does

Fondo Local Dev Loop is an agent skill from jeremylongshore/tons-of-skills-marketplace. Configure local development workflows that integrate with Fondo for financial data, using Fondo exports with QuickBooks or accounting tools. Trigger: "fondo dev setup", "fondo export", "fondo QuickBooks", "fondo local data".

Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts. Compatibility notes: Designed for Claude Code

It sits in Business, Finance & HR, covering Accounting and bookkeeping. It works with QuickBooks. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.

When your agent uses it

  • Tasks that involve Accounting and bookkeeping

Example prompts

  • “fondo dev setup”
  • “fondo export”
  • “fondo QuickBooks”
  • “/fondo-local-dev-loop”

Requirements

  • Node.js
  • A credential in FONDO_API_KEY
  • Compatibility (from SKILL.md): Designed for Claude Code
  • Pre-approved tools (allowed-tools): Read, Write, Edit, Bash(npm:*), Grep

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Keep mock mode enabled for normal development and generate only synthetic account, vendor, and transaction values.
  2. Validate schema and field mappings against an approved, access-controlled sample before any live workflow change.
  3. Redact logs, avoid committing exports, and delete temporary local artifacts through the defined retention process.

What it can do on your machine

Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Write
    • Edit
    • Bash(npm:*)
    • Grep

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • npm

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • csv.js.org

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • FONDO_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Designed for Claude Code

    From compatibility in the SKILL.md frontmatter.

Context cost

Fondo Local Dev Loop loads about 1.3k tokens when it runs. Until then it costs about 61 tokens; SKILL.md has 342 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~61
When it runs · the whole SKILL.md, loaded when a task matches
~1.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NoteMentions a .env fileSKILL.md:48
    cp .env.example .env

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 342 words, ~1,255 tokens.

Download SKILL.mdSave it as .claude/skills/fondo-local-dev-loop/SKILL.md (or your agent's skills folder).
name
fondo-local-dev-loop
description
Configure local development workflows that integrate with Fondo for financial data, using Fondo exports with QuickBooks or accounting tools. Trigger: "fondo dev setup", "fondo export", "fondo QuickBooks", "fondo local data".
allowed-tools
Read, Write, Edit, Bash(npm:*), Grep
compatibility
Designed for Claude Code
version
1.6.0
license
MIT
author
Jeremy Longshore <jeremy@intentsolutions.io>
tags
saas, accounting, fondo

Fondo Local Dev Loop

Overview

Local development workflow for Fondo startup tax and bookkeeping integration. Provides a fast feedback loop using CSV exports and mock financial data so you can build dashboards, R&D credit calculators, and burn-rate tools without waiting on live Fondo reports. Toggle between mock mode for rapid iteration and real export parsing for production validation.

Prerequisites

  • Fictional fixtures only, local directories excluded from version control, and a named finance owner for any approved export validation.
  • Secrets supplied from an approved manager; local development must not access production financial data by default.

Instructions

  1. Keep mock mode enabled for normal development and generate only synthetic account, vendor, and transaction values.
  2. Validate schema and field mappings against an approved, access-controlled sample before any live workflow change.
  3. Redact logs, avoid committing exports, and delete temporary local artifacts through the defined retention process.

Output

Produce a local validation receipt with fixture version, schema result, approved mapping, owner, and redacted failure reference. Do not include transactions, account details, payroll/tax data, or credentials.

Examples

Run a calculator against fictional monthly totals and confirm tests pass with network access disabled. Inspect the fixture for real names, account identifiers, or exports, then remove test artifacts after the schema validation is complete.

Environment Setup

bash
cp .env.example .env
# Set your credentials:
# FONDO_API_KEY=fondo_xxxxxxxxxxxx
# FONDO_EXPORT_DIR=./exports
# MOCK_MODE=true
npm install express csv-parse dotenv tsx typescript @types/node
npm install -D vitest supertest
mkdir -p exports

Dev Server

typescript
// src/dev/server.ts
import express from "express";
const app = express();
app.use(express.json());
const MOCK = process.env.MOCK_MODE === "true";
if (MOCK) {
  const { mountMockRoutes } = require("./mocks");
  mountMockRoutes(app);
} else {
  const { mountExportRoutes } = require("./export-parser");
  mountExportRoutes(app, process.env.FONDO_EXPORT_DIR!);
}
app.listen(3002, () => console.log(`Fondo dev server on :3002 [mock=${MOCK}]`));

Mock Mode

typescript
// src/dev/mocks.ts — realistic startup financial data
export function mountMockRoutes(app: any) {
  app.get("/api/transactions", (_req: any, res: any) => res.json([
    { date: "2025-03-01", description: "AWS Infrastructure", amount: -4200, category: "Cloud Hosting", account: "Operating", isRnD: true },
    { date: "2025-03-05", description: "Engineer Salary", amount: -12500, category: "Payroll", account: "Operating", isRnD: true },
    { date: "2025-03-10", description: "Stripe Revenue", amount: 8750, category: "Revenue", account: "Income", isRnD: false },
  ]));
  app.get("/api/reports/pnl", (_req: any, res: any) => res.json({
    period: "2025-Q1", revenue: 26250, expenses: 50100, netIncome: -23850,
  }));
  app.get("/api/reports/rnd-summary", (_req: any, res: any) => res.json({
    totalQualified: 38500, categories: ["Cloud Hosting", "Payroll", "Software Tools"],
  }));
}

Testing Workflow

bash
npm run dev:mock &                    # Start mock server in background
npm run test                          # Unit tests with vitest
npm run test -- --watch               # Watch mode for rapid iteration
MOCK_MODE=false npm run test:integration  # Test against real Fondo CSV exports

Debug Tips

  • Place sample CSVs in exports/ to test parsing without Fondo dashboard access
  • Validate CSV column headers match Fondo's export format (Date, Description, Amount, Category, Account, R&D Qualified)
  • Use --verbose flag with the parser to log skipped rows and type coercion warnings
  • Check for locale-specific number formats ($1,234.56 vs 1234.56) in Amount column

Error Handling

IssueCauseFix
CSV parse errorMalformed export fileRe-export from Fondo with UTF-8 encoding
NaN in amountCurrency symbols in Amount columnStrip $ and , before parseFloat
Missing R&D columnOlder export formatUse Fondo's updated report template
ENOENT exports/Export directory missingRun mkdir -p exports
Empty datasetDate range has no transactionsWiden the date range in Fondo dashboard

Resources

Next Steps

See fondo-debug-bundle.

© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/.curated/fondo-local-dev-loop of jeremylongshore/tons-of-skills-marketplace.

Open the folder on GitHubat commit cfae287

Compare with similar skills

Fondo Local Dev Loop next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Fondo Local Dev Loop compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Fondo Local Dev Loop this skilljeremylongshore/tons-of-skills-marketplace2.8k—~1.3kAutomated safety check: NotesMIT
Payroll Gl ReconciliationLeoYeAI/openclaw-master-skills2.2k—~6.2kAutomated safety check: PassMIT
Finance Opsericosiu/ai-marketing-skills3.6k1 repos~1.4kAutomated safety check: PassMIT
Bookkeeping CloseOneWave-AI/claude-skills336—~2kAutomated safety check: PassMIT
QuickBooks Online Integrationhewi333/Mom-n-Pop-Skills122—~1.9kAutomated safety check: PassMIT
Sync Upstreamnyaruka/phonenumbers1.6k—~2.8kAutomated safety check: PassMIT

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Works with

Categories

Questions about Fondo Local Dev Loop

What does Fondo Local Dev Loop do?

Configure local development workflows that integrate with Fondo for financial data, using Fondo exports with QuickBooks or accounting tools. Fondo Local Dev Loop is an agent skill from jeremylongshore/tons-of-skills-marketplace. Configure local development workflows that integrate with Fondo for financial data, using Fondo exports with QuickBooks or accounting tools.

When should I use Fondo Local Dev Loop?

Fondo Local Dev Loop fits situations like: tasks that involve Accounting and bookkeeping.

How do I install Fondo Local Dev Loop in Claude Code?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill fondo-local-dev-loop -a claude-code`. Or copy the skill folder (skills/.curated/fondo-local-dev-loop in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/fondo-local-dev-loop in your project. Claude Code loads it when a task matches its description.

How do I install Fondo Local Dev Loop in Codex?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill fondo-local-dev-loop -a codex`. Or copy the skill folder (skills/.curated/fondo-local-dev-loop in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/fondo-local-dev-loop in your project. Codex loads it when a task matches its description.

Can I use Fondo Local Dev Loop in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill fondo-local-dev-loop -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/fondo-local-dev-loop, .gemini/skills/fondo-local-dev-loop, .github/skills/fondo-local-dev-loop and .opencode/skills/fondo-local-dev-loop in your project.

What does Fondo Local Dev Loop need to run?

Going by SKILL.md and its folder, Fondo Local Dev Loop needs the command-line tools its instructions call (npm) and credentials named FONDO_API_KEY. Our summary lists: Node.js; A credential in FONDO_API_KEY. Its frontmatter pre-approves these tools: Read, Write, Edit, Bash(npm:*), Grep. Compatibility (from SKILL.md): Designed for Claude Code.

Does Fondo Local Dev Loop access the network?

SKILL.md names 1 domain. As links in the text: csv.js.org. This is read from the text; nothing was executed.

Is Fondo Local Dev Loop safe to install?

Our automated static check of SKILL.md found notes only (mentions a .env file), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Fondo Local Dev Loop use?

Fondo Local Dev Loop is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Fondo Local Dev Loop use?

About 1.3k tokens (SKILL.md is roughly 5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Fondo Local Dev Loop?

Skills that share tags, products or a category with Fondo Local Dev Loop: Payroll Gl Reconciliation (LeoYeAI/openclaw-master-skills, 2.2k stars), Finance Ops (ericosiu/ai-marketing-skills, 3.6k stars), Bookkeeping Close (OneWave-AI/claude-skills, 336 stars) and QuickBooks Online Integration (hewi333/Mom-n-Pop-Skills, 122 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Fondo Local Dev Loop?

jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,827 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 10, 2026.

Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.