Sync Upstream
nyaruka/phonenumbers
Sync this Go port with a new upstream google/libphonenumber release — regenerate the embedded metadata and reconcile the ported Java logic.
Optimize Fondo costs by maximizing R&D tax credits, choosing the right plan, and reducing unnecessary bookkeeping complexity.
Install Fondo Cost Tuning
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill fondo-cost-tuning -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace fondo-cost-tuning --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ 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-cost-tuning .claude/skills/fondo-cost-tuning && rm -rf skills-srcUse ~/.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/
Install the "fondo-cost-tuning" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/fondo-cost-tuning into .claude/skills/fondo-cost-tuning/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fondo-cost-tuning", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/fondo-cost-tuningType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill fondo-cost-tuning -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace fondo-cost-tuning --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/.curated/fondo-cost-tuning .agents/skills/fondo-cost-tuning && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "fondo-cost-tuning" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/fondo-cost-tuning into .agents/skills/fondo-cost-tuning/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fondo-cost-tuning", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill fondo-cost-tuning -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace fondo-cost-tuning --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/.curated/fondo-cost-tuning .cursor/skills/fondo-cost-tuning && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "fondo-cost-tuning" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/fondo-cost-tuning into .cursor/skills/fondo-cost-tuning/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fondo-cost-tuning", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/jeremylongshore/tons-of-skills-marketplace.git --path skills/.curated/fondo-cost-tuning--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill fondo-cost-tuning -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace fondo-cost-tuning --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/.curated/fondo-cost-tuning .gemini/skills/fondo-cost-tuning && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "fondo-cost-tuning" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/fondo-cost-tuning into .gemini/skills/fondo-cost-tuning/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fondo-cost-tuning", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install jeremylongshore/tons-of-skills-marketplace fondo-cost-tuningInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill fondo-cost-tuning -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/.curated/fondo-cost-tuning .github/skills/fondo-cost-tuning && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "fondo-cost-tuning" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/fondo-cost-tuning into .github/skills/fondo-cost-tuning/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fondo-cost-tuning", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill fondo-cost-tuning -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace fondo-cost-tuning --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/.curated/fondo-cost-tuning .opencode/skills/fondo-cost-tuning && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "fondo-cost-tuning" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/fondo-cost-tuning into .opencode/skills/fondo-cost-tuning/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fondo-cost-tuning", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
fondo-cost-tuning- GitHub stars
- 2.8k
- Token cost
- ~857 tokens
- SKILL.md length
- 321 words
- Files
- 1
- Skills in repo
- 3,342
- Repo updated
- First seen
- Licence
- MIT
At a glance
Optimize Fondo costs by maximizing R&D tax credits, choosing the right plan, and reducing unnecessary bookkeeping complexity.
- Works in 3 steps: Measure cost and workflow value using… → Consider operational simplification only… → Obtain finance approval before changing…
- Tasks that involve Accounting and bookkeeping
- SKILL.md covers Overview, Prerequisites, Instructions and Output, plus 8 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Fondo Cost Tuning is an agent skill from jeremylongshore/tons-of-skills-marketplace. Optimize Fondo costs by maximizing R&D tax credits, choosing the right plan, and reducing unnecessary bookkeeping complexity. Trigger: "fondo costs", "fondo pricing", "maximize R&D credit", "fondo ROI".
Its SKILL.md is about 860 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. 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 costs”
- “fondo pricing”
- “maximize R&D credit”
- “/fondo-cost-tuning”
Requirements
- Compatibility (from SKILL.md): Designed for Claude Code
- Pre-approved tools (allowed-tools): Read, Write, Edit
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Measure cost and workflow value using current data and document assumptions for review.
- Consider operational simplification only when it preserves compliance, retention, reconciliation, and professional-review requirements.
- Obtain finance approval before changing plan, scope, integrations, or tax workflow.
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:
ReadWriteEdit
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
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):
fondo.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
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 Cost Tuning loads about 857 tokens when it runs. Until then it costs about 55 tokens; SKILL.md has 321 words of instructions outside code blocks.
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 passed
The automated check found no risky patterns in SKILL.md.
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). 321 words, ~857 tokens.
Download SKILL.mdSave it as
.claude/skills/fondo-cost-tuning/SKILL.md (or your agent's skills folder).- name
- fondo-cost-tuning
- description
- Optimize Fondo costs by maximizing R&D tax credits, choosing the right plan, and reducing unnecessary bookkeeping complexity. Trigger: "fondo costs", "fondo pricing", "maximize R&D credit", "fondo ROI".
- allowed-tools
- Read, Write, Edit
- compatibility
- Designed for Claude Code
- version
- 1.6.0
- license
- MIT
- author
- Jeremy Longshore <jeremy@intentsolutions.io>
- tags
- saas, accounting, fondo
Fondo Cost Tuning
Overview
Maximize Fondo ROI: the R&D tax credit alone should exceed the annual Fondo cost for most startups.
Prerequisites
- Current contract/billing information reviewed by the finance owner and an approved decision process.
- Aggregate usage data only; individual employee, payroll, tax, and account data stays in authorized systems.
Instructions
- Measure cost and workflow value using current data and document assumptions for review.
- Consider operational simplification only when it preserves compliance, retention, reconciliation, and professional-review requirements.
- Obtain finance approval before changing plan, scope, integrations, or tax workflow.
Output
Record the measurement period, aggregate inputs, decision owner, approved action, verification date, and exceptions. This is not a tax, legal, or financial conclusion.
Error Handling
- Stop if data is incomplete or a proposed saving reduces auditability, access controls, or required review.
- Route eligibility or filing questions to the designated professional rather than automating a decision.
- Keep evidence redacted and reversible.
Examples
Compare two fictional aggregate workload profiles, have the finance owner approve the selected option, and verify no account, payroll, or tax information was copied into the analysis.
ROI Analysis
Fondo TaxPass cost: ~$4,000-8,000/year (varies by plan)
Average R&D credit: $21,000/year
Bookkeeping savings: $12,000-24,000/year (vs. dedicated bookkeeper)
Tax prep savings: $5,000-10,000/year (vs. separate CPA)
------------------
Net ROI: $24,000-47,000/year benefitMaximize R&D Credits
| Action | Impact |
|---|---|
| Convert key contractors to W-2 employees | W-2 wages qualify at 100% vs 65% for contractors |
| Tag cloud compute (AWS/GCP) to R&D projects | Qualifies as supply expense |
| Document technical uncertainty in projects | Strengthens audit defense |
| Track contractor hours on R&D activities | Maximizes contractor credit |
| Include software tools used for R&D | Figma, GitHub, testing tools qualify |
Choose the Right Plan
| Your Situation | Recommended Plan |
|---|---|
| Pre-revenue, < 10 employees | Bookkeeping only |
| Revenue-generating, any size | TaxPass (includes R&D credits) |
| Series B+, complex structure | Enterprise (dedicated team) |
| Multi-entity or international | Enterprise |
Cost Reduction Strategies
- Simplify chart of accounts (fewer custom categories = less CPA time)
- Use auto-categorization rules (reduces manual review)
- Connect all tools via OAuth (reduces manual CSV uploads)
- Respond promptly to CPA questions (reduces back-and-forth cost)
Resources
Next Steps
For architecture overview, see fondo-reference-architecture.
© 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-cost-tuning of jeremylongshore/tons-of-skills-marketplace.
Open the folder on GitHubat commit cfae287
Compare with similar skills
Fondo Cost Tuning 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Fondo Cost Tuning this skilljeremylongshore/tons-of-skills-marketplace | 2.8k | — | ~857 | Automated safety check: Pass | MIT | |
| Sync Upstreamnyaruka/phonenumbers | 1.6k | — | ~2.8k | Automated safety check: Pass | MIT | |
| Radiology Tablehuang-sir1/radiology-skills | 1.9k | — | ~1.3k | Automated safety check: Pass | Custom licence | |
| ERPClaw ERP Controlleravansaber/erpclaw | 116 | — | ~18k | Automated safety check: Pass | GPL-3.0 | |
| Odoo Agency Fleet Reviewerpipe-org/mcp-odoo | 421 | — | ~699 | Automated safety check: Pass | MIT | |
| Beancount Closebex-co/beancount-io | 297 | — | ~1.4k | Automated safety check: Pass | MIT |
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Categories
Questions about Fondo Cost Tuning
What does Fondo Cost Tuning do?
Optimize Fondo costs by maximizing R&D tax credits, choosing the right plan, and reducing unnecessary bookkeeping complexity. Fondo Cost Tuning is an agent skill from jeremylongshore/tons-of-skills-marketplace. Optimize Fondo costs by maximizing R&D tax credits, choosing the right plan, and reducing unnecessary bookkeeping complexity.
When should I use Fondo Cost Tuning?
Fondo Cost Tuning fits situations like: tasks that involve Accounting and bookkeeping.
How do I install Fondo Cost Tuning in Claude Code?
Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill fondo-cost-tuning -a claude-code`. Or copy the skill folder (skills/.curated/fondo-cost-tuning in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/fondo-cost-tuning in your project. Claude Code loads it when a task matches its description.
How do I install Fondo Cost Tuning in Codex?
Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill fondo-cost-tuning -a codex`. Or copy the skill folder (skills/.curated/fondo-cost-tuning in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/fondo-cost-tuning in your project. Codex loads it when a task matches its description.
Can I use Fondo Cost Tuning 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-cost-tuning -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-cost-tuning, .gemini/skills/fondo-cost-tuning, .github/skills/fondo-cost-tuning and .opencode/skills/fondo-cost-tuning in your project.
What does Fondo Cost Tuning need to run?
SKILL.md names no scripts, command-line tools or credentials: Fondo Cost Tuning is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Write, Edit. Compatibility (from SKILL.md): Designed for Claude Code.
Does Fondo Cost Tuning access the network?
SKILL.md names 1 domain. As links in the text: fondo.com. This is read from the text; nothing was executed.
Is Fondo Cost Tuning safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Fondo Cost Tuning use?
Fondo Cost Tuning 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 Cost Tuning use?
About 857 tokens (SKILL.md is roughly 3.4k 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 Cost Tuning?
Skills that share tags, products or a category with Fondo Cost Tuning: Sync Upstream (nyaruka/phonenumbers, 1.6k stars), Radiology Table (huang-sir1/radiology-skills, 1.9k stars), ERPClaw ERP Controller (avansaber/erpclaw, 116 stars) and Odoo Agency Fleet Review (erpipe-org/mcp-odoo, 421 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Fondo Cost Tuning?
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.