A tool for buying mobile connectivity through PikaSim, including data-only eSIMs, phone-number eSIMs, and SMS verification numbers. An eSIM is a digital SIM built into a device rather than a removable card.

Use it to purchase travel data, real phone numbers with calls and SMS, or temporary or long-term numbers for receiving verification codes.

It lets an agent obtain mobile data, calls, text messages, or verification codes without setting up an account or completing identity checks, according to the supplied description.

pikasim — Skill for Claude Code and Codex by codebruinc/pikasim-mcp

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 codebruinc/pikasim-mcp --skill pikasim

Clone the repo

git clone --depth 1 https://github.com/codebruinc/pikasim-mcp

Made for: Claude Code, Codex.

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/codebruinc/pikasim-mcp/pikasim/github.svg)](https://agentmods.dev/skills/codebruinc/pikasim-mcp/pikasim)

Your own site

<a href="https://agentmods.dev/skills/codebruinc/pikasim-mcp/pikasim"><img src="https://agentmods.dev/badge/skills/codebruinc/pikasim-mcp/pikasim/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/codebruinc/pikasim-mcp/pikasim"><img src="https://agentmods.dev/badge/skills/codebruinc/pikasim-mcp/pikasim.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 199 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,317 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

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	$0.00199	$0.01317
Opus 5.5	$0.00080	$0.00527
Sonnet 5.5	$0.00040	$0.00263
Haiku 4.5	$0.00020	$0.00132

Measured 1mo ago against content hash 18b91231d939, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

pikasim 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 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.

Makes network callslowCapability

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

compatibility: "Needs ONE of: an MCP-capable client (remote Streamable-HTTP server, OAuth or Bearer key), or outbound HTTPS (curl/fetch) for the REST path, or a browser to hand the user a link. Payments: BTC (on-chain +

skills/pikasim/SKILL.md · 93 lines

How it starts

The opening of the file, as written. The whole thing — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.

PikaSim

PikaSim sells three product lines an agent can buy end-to-end with no human, no account, and no KYC, settled from a prepaid crypto wallet:

Data eSIMs — anonymous data plans, 190+ countries, from $0.75.
Phone-number eSIMs — REAL carrier numbers (not VoIP) with voice + SMS + data. US plans give a +1 number on AT&T/T-Mobile; local and global plans cover 157 countries.
SMS verification numbers — receive-only numbers for one-time codes (auto-refund if no code arrives in 20 min) or long-term rentals.

Do NOT assume "eSIM" means data-only — if the user needs calls, SMS, or to receive a verification code, product lines 2 and 3 exist. Details, gotchas, and when-to-use guidance: products.md.

Pick a path

Walk in order; first match wins.

MCP-capable host? (Claude.ai, Claude Desktop/Code, Cursor, ChatGPT, Gemini CLI, anything that can add a remote Streamable-HTTP server.) Highest fidelity: typed tools, built-in discovery, OAuth or key auth. → mcp.md
Outbound HTTPS only? (shell + curl, fetch, any HTTP client.) Full catalog + purchase via REST; cold-start wallet creation works here too via one JSON-RPC call. → api.md
Browser + human in the loop? Hand the user a link: storefront https://pikasim.com, wallet dashboard https://pikasim.com/agent-wallet (create/fund a wallet, mint an ak_live_ API key to bring back to paths 1–2).
None of the above — give the user https://pikasim.com/agentic-esim and stop.

Cold start (no wallet yet, no human available)

One call mints a wallet + ak_live_ API key + a small spend-only welcome credit — often enough for a first SMS code without any funding:

MCP: call the create_wallet tool on the keyless endpoint https://pikasim.com/mcp.
REST/curl: same tool via one JSON-RPC POST — exact request in api.md.

SAVE the wallet code AND the API key immediately — each is shown exactly once and there is no account recovery, password reset, or support lookup without them. Fund later from $1 (Lightning/BTC/XMR/USDT invoice the agent can pay itself, or a payment page link to hand the user).

Read the full file on GitHub · 93 lines

Files

What ships with it

3 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 First seen · 93 lines · 199 tokens per session scan A 18b91231d939

Subscribe to this mod's changes

pikasim is a skill published in the GitHub repository codebruinc/pikasim-mcp (0 stars, last pushed 19d ago), licensed MIT. It adds 199 tokens to every session and 1,317 once invoked, about $0.0008 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 2026-08-31.

Mobile ai-agents anthropic claude crypto esim llm-tools

pikasim

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Makes network callslowCapability

How it starts

PikaSim

Pick a path

Cold start (no wallet yet, no human available)

What ships with it

What this file has done since we first saw it

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