Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add jonathimer/devmarketing-skills --skill developer-onboardinggit clone --depth 1 https://github.com/jonathimer/devmarketing-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/jonathimer/devmarketing-skills/developer-onboarding)<a href="https://agentmods.dev/skills/jonathimer/devmarketing-skills/developer-onboarding"><img src="https://agentmods.dev/badge/skills/jonathimer/devmarketing-skills/developer-onboarding/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/jonathimer/devmarketing-skills/developer-onboarding"><img src="https://agentmods.dev/badge/skills/jonathimer/devmarketing-skills/developer-onboarding.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00060 | $0.03160 |
| Opus 5.5 | $0.00024 | $0.01264 |
| Sonnet 5.5 | $0.00012 | $0.00632 |
| Haiku 4.5 | $0.00006 | $0.00316 |
Grade A, and why
developer-onboarding scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 520 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Developer Onboarding
Get developers from signup to working code as fast as possible, then guide them to deeper engagement.
Overview
Developer onboarding is the critical window between "I signed up" and "I understand how to use this." You have about 10 minutes of developer attention. Every second of confusion, every error message without guidance, every "it should work but doesn't" moment costs you users.
Great onboarding feels like pair programming with someone who anticipated every question. Bad onboarding feels like being dropped in a foreign city without a map.
Before You Start
Review the /devmarketing-skills/skills/developer-audience-context skill to understand your target developers. A hobbyist building side projects needs different onboarding than an enterprise architect evaluating tools for production. Review /devmarketing-skills/skills/developer-signup-flow to ensure signup flows smoothly into onboarding.
Time-to-First-Value Optimization
Defining "First Value"
First value isn't "made an API call." First value is when the developer sees your tool doing something useful for them.
| Tool Type | First Value Moment |
|---|---|
| API | Response returns meaningful data |
| SDK | Library performs expected function |
| Database | Query returns results |
| Hosting | App is live and accessible |
| Auth | User successfully logs in |
| Payment | Test charge processes |
Measuring Time to First Value (TTFV)
Track timestamps at each stage:
signup_completed: 2024-01-15T10:00:00Z
dashboard_loaded: 2024-01-15T10:00:05Z
api_key_copied: 2024-01-15T10:01:30Z
first_api_call: 2024-01-15T10:04:45Z
first_successful_response: 2024-01-15T10:04:46Z # TTFV = 4:46
Benchmarks by category:
- Simple APIs: <5 minutes
- SDKs requiring installation: <10 minutes
- Complex infrastructure: <30 minutes
- Self-hosted: <60 minutes
Removing TTFV Obstacles
Map every step and eliminate blockers:
Common TTFV killers:
- Email verification before dashboard access
- API keys hidden in account settings
- Quickstart assumes dependencies already installed
- First example requires paid features
- Error messages without resolution guidance
- Docs search finds outdated tutorials
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 520 lines · 60 tokens per session scan A c8dc97822d4c
developer-onboarding is a skill published in the GitHub repository jonathimer/devmarketing-skills (87 stars, last pushed 7mo ago), licensed MIT. It adds 60 tokens to every session and 3,160 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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