Base MCP
base/skills
Base MCP — gives your AI assistant access to a Base Account via the Base MCP server (wallet-mcp.coinbase.com).
Add x402 payment execution to AI agents — per-task budgets, spending controls, and non-custodial wallets via MCP tools.
Install Agent Payment X402
$ npx skills add Sidiora-Labs/centra-llm-agents --skill agent-payment-x402 -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents agent-payment-x402 --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .claude/skills && cp -r skills-src/protocol/skills/agent-payment-x402 .claude/skills/agent-payment-x402 && rm -rf skills-srcUse ~/.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/
Install the "agent-payment-x402" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/agent-payment-x402 into .claude/skills/agent-payment-x402/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agent-payment-x402", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/agent-payment-x402Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add Sidiora-Labs/centra-llm-agents --skill agent-payment-x402 -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents agent-payment-x402 --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .agents/skills && cp -r skills-src/protocol/skills/agent-payment-x402 .agents/skills/agent-payment-x402 && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "agent-payment-x402" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/agent-payment-x402 into .agents/skills/agent-payment-x402/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agent-payment-x402", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Sidiora-Labs/centra-llm-agents --skill agent-payment-x402 -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents agent-payment-x402 --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/protocol/skills/agent-payment-x402 .cursor/skills/agent-payment-x402 && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "agent-payment-x402" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/agent-payment-x402 into .cursor/skills/agent-payment-x402/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agent-payment-x402", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/Sidiora-Labs/centra-llm-agents.git --path protocol/skills/agent-payment-x402--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Sidiora-Labs/centra-llm-agents --skill agent-payment-x402 -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents agent-payment-x402 --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/protocol/skills/agent-payment-x402 .gemini/skills/agent-payment-x402 && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "agent-payment-x402" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/agent-payment-x402 into .gemini/skills/agent-payment-x402/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agent-payment-x402", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install Sidiora-Labs/centra-llm-agents agent-payment-x402Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add Sidiora-Labs/centra-llm-agents --skill agent-payment-x402 -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .github/skills && cp -r skills-src/protocol/skills/agent-payment-x402 .github/skills/agent-payment-x402 && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "agent-payment-x402" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/agent-payment-x402 into .github/skills/agent-payment-x402/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agent-payment-x402", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Sidiora-Labs/centra-llm-agents --skill agent-payment-x402 -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents agent-payment-x402 --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/protocol/skills/agent-payment-x402 .opencode/skills/agent-payment-x402 && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "agent-payment-x402" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/agent-payment-x402 into .opencode/skills/agent-payment-x402/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agent-payment-x402", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
agent-payment-x402- GitHub stars
- 116
- Token cost
- ~1.8k tokens
- SKILL.md length
- 470 words
- Files
- 2
- Skills in repo
- 13
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Add x402 payment execution to AI agents — per-task budgets, spending controls, and non-custodial wallets via MCP tools.
- Agents need to pay for APIs
- SKILL.md covers When to Use, How It Works, MCP Integration and Examples, plus 2 more sections
- Calls npm; needs WALLET_PRIVATE_KEY
- Tasks that involve MCP servers
What it does
Agent Payment X402 is an agent skill from Sidiora-Labs/centra-llm-agents. Add x402 payment execution to AI agents — per-task budgets, spending controls, and non-custodial wallets via MCP tools. Use when agents need to pay for APIs, services, or other agents.
Its SKILL.md is about 1.8k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file.
It sits in Agent Workflows, covering MCP servers. It works with x402. The repository describes itself as: A stateful AI operating system for serious, long-horizon work.
When your agent uses it
- Agents need to pay for APIs
- Tasks that involve MCP servers
Example prompts
- “/agent-payment-x402”
Requirements
- Node.js
- A credential in WALLET_PRIVATE_KEY
What it can do on your machine
Read from SKILL.md and the folder at commit 01c6aef. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
npm
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
npmjs.comgithub.comx402.org
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
WALLET_PRIVATE_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Agent Payment X402 loads about 1.8k tokens when it runs. Until then it costs about 51 tokens; SKILL.md has 470 words of instructions outside code blocks.
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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 470 words (~1,804 tokens).
“Enable AI agents to make autonomous payments with built-in spending controls. Uses the x402 HTTP payment protocol and MCP tools so agents can pay for external services, APIs, or other agents without custodial risk.”
- name
- agent-payment-x402
- origin
- community
Files
SKILL.md and 1 other file in protocol/skills/agent-payment-x402 of Sidiora-Labs/centra-llm-agents.
- SKILL.md
- SKILL.mtx
Open the folder on GitHubat commit 01c6aef
Compare with similar skills
Agent Payment X402 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Agent Payment X402 this skillSidiora-Labs/centra-llm-agents | 116 | — | ~1.8k | Automated safety check: Pass | Custom licence | |
| Base MCPbase/skills | 121 | — | ~3.5k | Automated safety check: Pass | MIT | |
| Wallet MCPbase/skills | 121 | — | ~3.7k | Automated safety check: Pass | MIT | |
| X402 Express Wrappersickn33/agentic-awesome-skills | 47k | 1 repos | ~772 | Automated safety check: Notes | MIT | |
| Toolsaustintgriffith/ethskills | 295 | — | ~1.6k | Automated safety check: Pass | None | |
| Agent Payment X402templetongroup/radiant | 113 | — | ~2.7k | Automated safety check: Pass | MIT |
Similar skills
Wallet MCP
base/skills
Wallet MCP — gives your AI assistant access to a Coinbase Wallet Account via the Wallet MCP server (wallet-mcp.coinbase.com).
X402 Express Wrapper
sickn33/agentic-awesome-skills
Wrapper oficial de M2MCent (Node.js) para inyectar muros de pago x402 en APIs o servidores Model Context Protocol (MCP).
Tools
austintgriffith/ethskills
Current Ethereum development tools, frameworks, libraries, RPCs, and block explorers.
Agent Payment X402
templetongroup/radiant
Add x402 payment execution to AI agents with per-task budgets, spending controls, and non-custodial wallets.
Base MCP Wallet Reader
aeonfun/aeon
Reads a Base Account's address, portfolio and transaction history through the Base MCP server, and stays strictly read-only in unattended Aeon runs, reporting only changes.
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Related
Works with
Categories
Questions about Agent Payment X402
What does Agent Payment X402 do?
Add x402 payment execution to AI agents — per-task budgets, spending controls, and non-custodial wallets via MCP tools. Agent Payment X402 is an agent skill from Sidiora-Labs/centra-llm-agents. Add x402 payment execution to AI agents — per-task budgets, spending controls, and non-custodial wallets via MCP tools.
When should I use Agent Payment X402?
Agent Payment X402 fits situations like: agents need to pay for APIs; tasks that involve MCP servers.
How do I install Agent Payment X402 in Claude Code?
Run `npx skills add Sidiora-Labs/centra-llm-agents --skill agent-payment-x402 -a claude-code`. Or copy the skill folder (protocol/skills/agent-payment-x402 in Sidiora-Labs/centra-llm-agents) into .claude/skills/agent-payment-x402 in your project. Claude Code loads it when a task matches its description.
How do I install Agent Payment X402 in Codex?
Run `npx skills add Sidiora-Labs/centra-llm-agents --skill agent-payment-x402 -a codex`. Or copy the skill folder (protocol/skills/agent-payment-x402 in Sidiora-Labs/centra-llm-agents) into .agents/skills/agent-payment-x402 in your project. Codex loads it when a task matches its description.
Can I use Agent Payment X402 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 Sidiora-Labs/centra-llm-agents --skill agent-payment-x402 -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/agent-payment-x402, .gemini/skills/agent-payment-x402, .github/skills/agent-payment-x402 and .opencode/skills/agent-payment-x402 in your project.
What does Agent Payment X402 need to run?
Going by SKILL.md and its folder, Agent Payment X402 needs the command-line tools its instructions call (npm) and credentials named WALLET_PRIVATE_KEY. Our summary lists: Node.js; A credential in WALLET_PRIVATE_KEY.
Does Agent Payment X402 access the network?
SKILL.md names 3 domains. As links in the text: npmjs.com, github.com and x402.org. This is read from the text; nothing was executed.
Is Agent Payment X402 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 Agent Payment X402 use?
Agent Payment X402 has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Agent Payment X402 use?
About 1.8k tokens (SKILL.md is roughly 7.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Agent Payment X402?
Skills that share tags, products or a category with Agent Payment X402: Base MCP (base/skills, 121 stars), Wallet MCP (base/skills, 121 stars), X402 Express Wrapper (sickn33/agentic-awesome-skills, 47k stars) and Tools (austintgriffith/ethskills, 295 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Agent Payment X402?
Sidiora-Labs (a GitHub organization) maintains it in Sidiora-Labs/centra-llm-agents, which has 116 GitHub stars. The repository holds 13 skills in this directory. The repository was last updated on September 18, 2026.
Source: Sidiora-Labs/centra-llm-agents on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.