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Agent skill

Navan Local Dev Loop

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

Develop Navan integrations against sanitized contract fixtures with networking denied by default.

MITAuto-check passedBusiness, Finance & HR

Install Navan Local Dev Loop

skills CLI
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill navan-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 navan-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/navan-local-dev-loop .claude/skills/navan-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
navan-local-dev-loop
GitHub stars
2.8k
Token cost
~904 tokens
SKILL.md length
379 words
Files
2 (incl. references)
Skills in repo
3,342
Repo updated
First seen
Licence
MIT

At a glance

Develop Navan integrations against sanitized contract fixtures with networking denied by default.

  • Works in 6 steps: Capture a schema from authorized… → Build minimal success, empty, paginated,… → Validate fixtures against local types… → …
  • Changing adapters
  • SKILL.md covers Overview, Prerequisites, Current Contract and Authentication, plus 8 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Navan Local Dev Loop is an agent skill from jeremylongshore/tons-of-skills-marketplace. Develop Navan integrations against sanitized contract fixtures with networking denied by default. Use when changing adapters, mappings, or reconciliation logic. Trigger with "develop Navan locally", "mock Navan data", or "add Navan fixtures".

Its SKILL.md is about 900 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/official-docs.md`). Compatibility notes: Designed for Claude Code; live or external Navan actions require network access and explicit approval

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

  • Changing adapters
  • Reconciliation logic
  • With develop Navan locally
  • Mock Navan data

Example prompts

  • “develop Navan locally”
  • “mock Navan data”
  • “add Navan fixtures”
  • “/navan-local-dev-loop”

Requirements

  • Compatibility (from SKILL.md): Designed for Claude Code; live or external Navan actions require network access and explicit approval
  • Pre-approved tools (allowed-tools): Read, Glob, Grep, Write, Edit

Workflow steps

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

  1. Capture a schema from authorized documentation or a sanitized response.
  2. Build minimal success, empty, paginated, corrected, denied, throttled, and malformed fixtures.
  3. Validate fixtures against local types and sensitivity rules.
  4. Run the adapter with networking blocked and a deterministic clock.
  5. Exercise mapping, deduplication, checkpoint, and rollback behavior.
  6. Keep live smoke configuration separate, bounded, and disabled by default.

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
    • Glob
    • Grep
    • Write
    • Edit

    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

    No URLs in SKILL.md.

    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; live or external Navan actions require network access and explicit approval

    From compatibility in the SKILL.md frontmatter.

Context cost

Navan Local Dev Loop loads about 904 tokens when it runs, and up to ~1.2k if it reads all its reference files. Until then it costs about 66 tokens; SKILL.md has 379 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~66
When it runs · the whole SKILL.md, loaded when a task matches
~904
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.2k

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). 379 words, ~904 tokens.

Download SKILL.mdSave it as .claude/skills/navan-local-dev-loop/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
navan-local-dev-loop
description
Develop Navan integrations against sanitized contract fixtures with networking denied by default. Use when changing adapters, mappings, or reconciliation logic. Trigger with "develop Navan locally", "mock Navan data", or "add Navan fixtures".
allowed-tools
Read, Glob, Grep, Write, Edit
compatibility
Designed for Claude Code; live or external Navan actions require network access and explicit approval
argument-hint
<surface> <fixture-set> <test-command>
version
1.9.0
license
MIT
author
Jeremy Longshore <jeremy@intentsolutions.io>
tags
saas, navan, development
model
inherit
effort
high

Navan Offline Development Loop

Overview

Develop Navan integrations against sanitized contract fixtures with networking denied by default. This workflow produces an auditable decision or artifact before any live action.

Prerequisites

  • Access to the selected tenant's current Navan Help Center and contracted integration documentation.
  • A named business owner and data owner for the travel or expense workflow.
  • A non-production evidence set with secrets and traveler data removed.

Current Contract

Local development should exercise the application-owned contract, not depend on a live tenant. Fixtures must preserve structural edge cases while removing traveler, payment, itinerary, and credential data.

Authentication

Local tests require no Navan credential. An optional live smoke uses a separate non-production secret and must be explicitly enabled outside the normal test command.

Instructions

  1. Capture a schema from authorized documentation or a sanitized response.
  2. Build minimal success, empty, paginated, corrected, denied, throttled, and malformed fixtures.
  3. Validate fixtures against local types and sensitivity rules.
  4. Run the adapter with networking blocked and a deterministic clock.
  5. Exercise mapping, deduplication, checkpoint, and rollback behavior.
  6. Keep live smoke configuration separate, bounded, and disabled by default.

Tool Discipline

Use Read, Glob, and Grep to inspect documentation, schemas, configuration, code, fixtures, and evidence. Use Write and Edit only for approved repository artifacts. Invocation alone does not authorize network access, credentials, traveler or expense data, bookings, payments, policy or identity changes, file transfers, deployments, or deletion.

Show full SKILL.md (147 more words)Show less

Approval Boundaries

Live tenant access, new fixtures derived from real data, dependency changes, and fixture publication require explicit approval.

Error Handling

  • Never commit raw tenant responses.
  • A fixture that contains plausible personal data still needs review.
  • Fail when an offline test unexpectedly opens a socket.

Output

Return fixture provenance, covered contracts, test results, network-denial evidence, uncovered fields, and optional live-smoke plan. Identify assumptions, owners, expirations, and evidence gaps explicitly.

Examples

  • Model a late booking correction with synthetic identifiers.
  • Test an expense reversal without a real receipt.

Validation

Scan fixtures for secrets and personal data, run twice for determinism, and verify a network attempt fails. Record expected and observed results, including fail-closed behavior.

Resources

  • Current first-party evidence map — recheck dated sources and the selected tenant's in-account contract before relying on mutable endpoints, fields, entitlements, limits, or delivery behavior.
  • Record tenant observations as environment-specific evidence, never universal Navan guarantees.

© 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

SKILL.md and 1 other file (references) in skills/.curated/navan-local-dev-loop of jeremylongshore/tons-of-skills-marketplace.

  • SKILL.md
  • references/official-docs.md

Open the folder on GitHubat commit cfae287

Compare with similar skills

Navan 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.

Navan Local Dev Loop compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Navan Local Dev Loop this skilljeremylongshore/tons-of-skills-marketplace2.8k—~904Automated safety check: PassMIT
Sync Upstreamnyaruka/phonenumbers1.6k—~2.8kAutomated safety check: PassMIT
Radiology Tablehuang-sir1/radiology-skills1.9k—~1.3kAutomated safety check: PassCustom licence
ERPClaw ERP Controlleravansaber/erpclaw116—~18kAutomated safety check: PassGPL-3.0
Odoo Agency Fleet Reviewerpipe-org/mcp-odoo421—~699Automated safety check: PassMIT
Beancount Closebex-co/beancount-io297—~1.4kAutomated safety check: PassMIT

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Categories

Questions about Navan Local Dev Loop

What does Navan Local Dev Loop do?

Develop Navan integrations against sanitized contract fixtures with networking denied by default. Navan Local Dev Loop is an agent skill from jeremylongshore/tons-of-skills-marketplace. Develop Navan integrations against sanitized contract fixtures with networking denied by default.

When should I use Navan Local Dev Loop?

Navan Local Dev Loop fits situations like: changing adapters; reconciliation logic; with develop Navan locally; mock Navan data.

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

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

How do I install Navan Local Dev Loop in Codex?

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

Can I use Navan 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 navan-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/navan-local-dev-loop, .gemini/skills/navan-local-dev-loop, .github/skills/navan-local-dev-loop and .opencode/skills/navan-local-dev-loop in your project.

What does Navan Local Dev Loop need to run?

SKILL.md names no scripts, command-line tools or credentials: Navan Local Dev Loop is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Glob, Grep, Write, Edit. Compatibility (from SKILL.md): Designed for Claude Code; live or external Navan actions require network access and explicit approval.

Does Navan Local Dev Loop access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Navan Local Dev Loop 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 Navan Local Dev Loop use?

Navan 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 Navan Local Dev Loop use?

About 904 tokens (SKILL.md is roughly 3.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 323 tokens, read only when the agent opens those files.

What are the alternatives to Navan Local Dev Loop?

Skills that share tags, products or a category with Navan Local Dev Loop: 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 Navan 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.