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 inkbox-ai/inkbox --skill inkbox-agent-self-signupgit clone --depth 1 https://github.com/inkbox-ai/inkboxWrote 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/inkbox-ai/inkbox/inkbox-agent-self-signup)<a href="https://agentmods.dev/skills/inkbox-ai/inkbox/inkbox-agent-self-signup"><img src="https://agentmods.dev/badge/skills/inkbox-ai/inkbox/inkbox-agent-self-signup/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/inkbox-ai/inkbox/inkbox-agent-self-signup"><img src="https://agentmods.dev/badge/skills/inkbox-ai/inkbox/inkbox-agent-self-signup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 109 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Excessive Agency · line 175 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Data Exfiltration · line 204 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
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 | $0.00043 | $0.02782 |
| Opus 5.5 | $0.00017 | $0.01113 |
| Sonnet 5.5 | $0.00009 | $0.00556 |
| Haiku 4.5 | $0.00004 | $0.00278 |
Grade A, and why
inkbox-agent-self-signup scanned grade A with 1 finding 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 2mo 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
## Direct API (curl) How it starts
The opening of the file, as written. The whole thing — 299 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Self-Signup
Overview
Agents can self-register for an Inkbox account without a pre-existing API key. The self-signup flow provisions a mailbox, identity, and API key in a single call. Ordinary signup sends the specified human a verification email; a matching email-bound A2A invitation claims and connects the identity without a second email.
The flow has four steps:
- Register — create the agent (public, no auth)
- Verify when needed — submit the 6-digit code the human received, unless a matching email-bound invitation already claimed the identity
- Resend Verification — re-send the code if needed
- Check Status — poll claim status and restrictions
Important: Always confirm with the user before initiating signup. Ordinary signup sends the specified human a real email, while invitation-assisted signup may connect immediately.
Harness & plugins
Signup accepts an optional harness field — a free-form string naming the agent
runtime you're calling from (e.g. claude-code, codex, openclaw, opencode, hermes,
cursor, windsurf, cline, aider, continue, gemini-cli, goose,
devin, copilot, roo, zed, replit, amp). Any value is accepted; it's
trimmed and lowercased server-side, and unknown harnesses are never rejected.
After signup or verification returns a claimed identity, read the response's
message. When a plugin exists for your harness, the message includes the
matching install, bootstrap, gateway-start, and doctor commands. Use the API key
returned by signup with those commands; do not create a second identity. (There
is no separate next_steps field — the guidance is folded into message.)
The five published plugins:
- claude-code → https://github.com/inkbox-ai/claude-code-plugin
- codex → https://github.com/inkbox-ai/codex-plugin
- openclaw → https://github.com/inkbox-ai/openclaw-plugin
- opencode → https://github.com/inkbox-ai/opencode-plugin
- hermes → https://github.com/inkbox-ai/hermes-agent-plugin
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.
- 2mo ago First seen · 299 lines · 43 tokens per session scan A 3fcb2aa6310a
inkbox-agent-self-signup is a skill published in the GitHub repository inkbox-ai/inkbox (103 stars, last pushed today), licensed MIT. It adds 43 tokens to every session and 2,782 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
sre-agent
Deploy or update the SRE Agent on Omnara, a production investigator that diagnoses issues across AWS and source code and reports the likely cause with evidence. Use when the user asks to deploy, set up, update, or remove the SRE agent.
browser-agent
Build and deploy a Browser Agent on Omnara, a long-running agent that signs in to web apps with stored credentials and works in a real browser, overnight if needed. Interviews the user about the job, sign-ins, schedule, and Slack or Discord first. Use when the user asks to build, deploy, set up, update, or remove a…
email-agent
Deploy or update the Email Agent on Omnara, an agent with its own email address that people can email, Cc, or @mention, built on Primitive's hosted email functions and MCP server. Use when the user asks to deploy, set up, update, customize, or remove the email agent.
linkedin-signal-agent
Deploy or update the LinkedIn Signal Agent on Omnara, an agent that scrapes LinkedIn posts (keyword search plus tracked company and profile feeds) and delivers a daily digest. Use when the user asks to deploy, set up, update, or remove the LinkedIn signal agent.
posthog-analytics-agent
Deploy or update the PostHog Analytics Agent on Omnara, an agent that queries a PostHog project through PostHog's MCP server and delivers a daily usage report. Use when the user asks to deploy, set up, update, or remove the PostHog analytics agent.
reddit-signal-agent
Deploy or update the Reddit Signal Agent on Omnara, an agent that scrapes Reddit for posts about a topic and delivers a daily digest. Use when the user asks to deploy, set up, update, or remove the Reddit signal agent.