A Solana tool for creating a new coin on pump.fun, optionally including an initial purchase.

Use it to create pump.fun coins from Node applications and configure their initial buy and launch details.

It organizes the transaction and account setup needed to launch a coin.

create-coin — Skill for Claude Code by nirholas/three.ws

Install

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.

Any agent

npx skills add nirholas/three.ws --skill create-coin

Clone the repo

git clone --depth 1 https://github.com/nirholas/three.ws

Made for: Claude Code.

Or install three-ws-pump-fun, the plugin that ships this one along with the rest of its 5 skills.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/nirholas/three.ws/create-coin/github.svg)](https://agentmods.dev/skills/nirholas/three.ws/create-coin)

Your own site

<a href="https://agentmods.dev/skills/nirholas/three.ws/create-coin"><img src="https://agentmods.dev/badge/skills/nirholas/three.ws/create-coin/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/nirholas/three.ws/create-coin"><img src="https://agentmods.dev/badge/skills/nirholas/three.ws/create-coin.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 4,482 The whole file, excluding the scripts and references it only reads on demand.

Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 4 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 Memory Poisoning · line 89
Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.

Fix: Implement context-window management that detects and rejects padding or stuffing attempts. Prioritize system instructions over user-injected content.
medium Prompt Injection · line 89
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
medium Prompt Injection · line 91
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
medium Excessive Agency · line 94
Skill grants unrestricted tool access without appropriate constraints. An agent with unfettered tool access can perform arbitrary actions including file modification, network requests, and code execution.

Fix: Restrict tool access to only the tools required for the skill's stated purpose. Use an explicit allowlist rather than granting blanket access.

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

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	$0.00037	$0.04482
Opus 5.5	$0.00015	$0.01793
Sonnet 5.5	$0.00007	$0.00896
Haiku 4.5	$0.00004	$0.00448

Measured 1mo ago against content hash ebf155e6e9d2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

create-coin scanned grade B with 2 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.

The scan reads SKILL.md. This mod also ships 12 executable files (handlers.js, scripts/build-create-coin-tx.mjs, scripts/fetch-coin.mjs, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Unrestricted tool accessmediumExcessive agency

A wildcard tool grant or "run any command" leaves no least-privilege boundary at all.

- Run any script with `--help` for full flags (`--mayhem-mode`, `--holder-reward`, `--tokenized-agent`, `--buyback-bps`, `--compute-units`, `--priority-micro-lamports`, `--front-runner-protection`, `--tip-sol`, etc.).

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

fetch(url, {

pump-fun-skills/create-coin/SKILL.md · 322 lines

How it starts

The opening of the file, as written. The whole thing — 322 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Before Starting Work Critical - Ask these from user

MANDATORY — Do NOT write or modify any code until every item below is answered by the user:

RPC URL provided or a fallback agreed upon (for any on-chain or tx-building step)
Signer wallet public key (fee payer / creator)
Framework confirmed (Next.js, Express, CLI scripts only, other)
Coin name, symbol, and metadata URI (or plan to upload) confirmed — see references/METADATA.md
Initial buy amount confirmed (SOL in lamports)
Holder rewards desired? (default off; creator fees go to holders permanently, script path only)
Mayhem mode desired? (default off)
Tokenized agent desired? (default off), If Yes then with what Buyback percentage.
Front-runner protection desired? If yes, confirm tip amount (default 0.0001 SOL). Transactions will be sent only to Jito block engine endpoints.

You MUST ask the user for ALL unchecked items in your very first response. Do not assume defaults. Do not proceed until the user has explicitly answered each one.

API (preferred) — `https://fun-block.pump.fun`

Use the API to build transactions instead of running scripts directly. The API handles account resolution, compute budget, and partial signing automatically.

`POST /agents/create-coin`

Builds a create + initial buy transaction. The server generates a mint keypair and partial-signs with it. The client wallet co-signs and submits.

Request body:

{
  "user": "<PUBKEY>",
  "name": "MyCoin",
  "symbol": "MC",
  "uri": "https://ipfs.io/ipfs/Qm...",
  "solLamports": "1000000",
  "mayhemMode": false,
  "tokenizedAgent": false,
  "buybackBps": 5000,
  "frontRunningProtection": false,
  "tipAmount": 0,
  "encoding": "base64",
  "feePayer": "<PUBKEY>",
  "creator": "<PUBKEY>"
}

Only user, name, symbol, uri, and solLamports are required. All other fields are optional with sensible defaults.

Pump SDK 2: new cashback coins can no longer be created (create_v2 fails with 6082 CashbackDeprecated), so never send "cashback": true; the cashback field in the response is always false. This hosted endpoint does not encode holder-reward launches yet. For a holder-reward coin, build locally with scripts/build-create-coin-tx.mjs --holder-reward.

Read the full file on GitHub · 322 lines

Files

What ships with it

19 files 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.

Changes

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 Changed · +2 lines ebf155e6e9d2
1mo ago First seen · 320 lines · 37 tokens per session scan B 3815c85a7190

Subscribe to this mod's changes

create-coin is a skill published in the GitHub repository nirholas/three.ws (250 stars, last pushed yesterday), licensed Apache-2.0. It adds 37 tokens to every session and 4,482 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it B with 2 findings (unrestricted tool access, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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