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Agent skill

Helius Openapi Skill

by holon-run in holon-run/uxc

Operate Helius Wallet API reads through UXC with a curated OpenAPI schema, API-key auth, and read-first guardrails.

MITAuto-check passedBackend & APIs

Install Helius Openapi Skill

skills CLI
$ npx skills add holon-run/uxc --skill helius-openapi-skill -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install holon-run/uxc helius-openapi-skill --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/holon-run/uxc.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/helius-openapi-skill .claude/skills/helius-openapi-skill && rm -rf skills-src

Use ~/.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/

Facts

Skill name
helius-openapi-skill
GitHub stars
116
Token cost
~1.1k tokens
SKILL.md length
362 words
Files
5 (incl. scripts, references)
Skills in repo
62
Repo updated
First seen
Licence
MIT

At a glance

Operate Helius Wallet API reads through UXC with a curated OpenAPI schema, API-key auth, and read-first guardrails.

  • Works in 4 steps: Use the fixed link command by default → Inspect operation schema first → Prefer narrow validation before broader… → …
  • Tasks that involve OpenAPI specifications
  • SKILL.md covers Prerequisites, Scope, Authentication and Core Workflow, plus 3 more sections
  • Runs Shell scripts from its folder; reaches api.helius.xyz; needs HELIUS_API_KEY

What it does

Helius Openapi Skill is an agent skill from holon-run/uxc. Operate Helius Wallet API reads through UXC with a curated OpenAPI schema, API-key auth, and read-first guardrails.

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 7 other files, including scripts and reference files (for example `agents/openai.yaml`, `references/helius-wallet.openapi.json` and `references/usage-patterns.md`).

It sits in Backend & APIs, covering OpenAPI specifications. It works with OpenAPI. The repository describes itself as: A unified CLI for discovering and invoking tools across OpenAPI, MCP, GraphQL, gRPC, and JSON-RPC. The licence is MIT.

When your agent uses it

  • Tasks that involve OpenAPI specifications

Example prompts

  • “/helius-openapi-skill”

Requirements

  • A Bash shell
  • A credential in HELIUS_API_KEY

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Use the fixed link command by default
  2. Inspect operation schema first
  3. Prefer narrow validation before broader reads
  4. Execute with key/value parameters

What it can do on your machine

Read from SKILL.md and the folder at commit 562d47c. 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

    Ships 1 file in scripts/ (Shell), which the agent can run.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • api.helius.xyz

    Also links to:

    • helius.dev

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • HELIUS_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Helius Openapi Skill loads about 1.1k tokens when it runs, and up to ~4k if it reads all its reference files. Until then it costs about 34 tokens; SKILL.md has 362 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~34
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~4k

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); the scripts in this folder are not scanned.

SKILL.md

The full file from holon-run/uxc at commit 562d47c, republished under its MIT licence (© holon-run). 362 words, ~1,123 tokens.

Download SKILL.mdSave it as .claude/skills/helius-openapi-skill/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.
name
helius-openapi-skill
description
Operate Helius Wallet API reads through UXC with a curated OpenAPI schema, API-key auth, and read-first guardrails.

Helius Wallet API Skill

Use this skill to run Helius Wallet API operations through uxc + OpenAPI.

Reuse the uxc skill for shared execution, auth, and error-handling guidance.

Prerequisites

  • uxc is installed and available in PATH.
  • Network access to https://api.helius.xyz.
  • Access to the curated OpenAPI schema URL:
    • https://raw.githubusercontent.com/holon-run/uxc/main/skills/helius-openapi-skill/references/helius-wallet.openapi.json
  • A Helius API key.

Scope

This skill covers a read-first Helius Wallet API surface:

  • wallet identity lookup
  • batch identity lookup
  • wallet balances
  • wallet history
  • wallet transfers
  • wallet funding source lookup

This skill does not cover:

  • Helius RPC, DAS, or WebSocket surfaces
  • transaction submission
  • webhook setup
  • the broader Helius platform beyond the selected wallet intelligence endpoints

Authentication

Helius accepts API keys by query parameter or header. This skill standardizes on X-Api-Key header auth.

Configure one API-key credential and bind it to api.helius.xyz:

bash
uxc auth credential set helius \
  --auth-type api_key \
  --api-key-header X-Api-Key \
  --secret-env HELIUS_API_KEY

uxc auth binding add \
  --id helius \
  --host api.helius.xyz \
  --scheme https \
  --credential helius \
  --priority 100

Validate the active mapping when auth looks wrong:

bash
uxc auth binding match https://api.helius.xyz

Core Workflow

  1. Use the fixed link command by default:

    • command -v helius-openapi-cli
    • If missing, create it:
      bash
      uxc link helius-openapi-cli https://api.helius.xyz \
  --schema-url https://raw.githubusercontent.com/holon-run/uxc/main/skills/helius-openapi-skill/references/helius-wallet.openapi.json
    • helius-openapi-cli -h

  2. Inspect operation schema first:

    • helius-openapi-cli get:/v1/wallet/{wallet}/identity -h
    • helius-openapi-cli post:/v1/wallet/batch-identity -h
    • helius-openapi-cli get:/v1/wallet/{wallet}/balances -h

  3. Prefer narrow validation before broader reads:

    • helius-openapi-cli get:/v1/wallet/{wallet}/identity wallet=HXsKP7wrBWaQ8T2Vtjry3Nj3oUgwYcqq9vrHDM12G664
    • helius-openapi-cli get:/v1/wallet/{wallet}/funded-by wallet=HXsKP7wrBWaQ8T2Vtjry3Nj3oUgwYcqq9vrHDM12G664
    • helius-openapi-cli get:/v1/wallet/{wallet}/balances wallet=HXsKP7wrBWaQ8T2Vtjry3Nj3oUgwYcqq9vrHDM12G664 page=1 limit=20 showNative=true

  4. Execute with key/value parameters:

    • helius-openapi-cli post:/v1/wallet/batch-identity addresses:='["HXsKP7wrBWaQ8T2Vtjry3Nj3oUgwYcqq9vrHDM12G664"]'
    • helius-openapi-cli get:/v1/wallet/{wallet}/history wallet=HXsKP7wrBWaQ8T2Vtjry3Nj3oUgwYcqq9vrHDM12G664 limit=20
    • helius-openapi-cli get:/v1/wallet/{wallet}/transfers wallet=HXsKP7wrBWaQ8T2Vtjry3Nj3oUgwYcqq9vrHDM12G664 limit=20
    • For addresses:='[...]', keep shell quoting in mind. If your shell mangles that form, pass the JSON array as a bare positional payload instead.
Show full SKILL.md (128 more words)Show less

Operation Groups

Wallet Identity
  • get:/v1/wallet/{wallet}/identity
  • post:/v1/wallet/batch-identity
  • get:/v1/wallet/{wallet}/funded-by
Wallet Activity
  • get:/v1/wallet/{wallet}/balances
  • get:/v1/wallet/{wallet}/history
  • get:/v1/wallet/{wallet}/transfers

Guardrails

  • Keep automation on the JSON output envelope; do not use --text.
  • Parse stable fields first: ok, kind, protocol, data, error.
  • Treat this v1 skill as read-only. Do not imply RPC write methods, transaction sending, or webhooks.
  • Helius labels the Wallet API as beta. Expect response shape drift and keep parsers focused on stable fields.
  • Start with small limit values before paginating large histories or transfer crawls.
  • Identity and funded-by lookups can return 404-style misses for unknown wallets; treat that as a data absence case before assuming auth failure.
  • helius-openapi-cli <operation> ... is equivalent to uxc https://api.helius.xyz --schema-url <helius_openapi_schema> <operation> ....

References

© holon-run, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 4 other files (scripts, references) in skills/helius-openapi-skill of holon-run/uxc.

  • SKILL.md
  • agents/openai.yaml
  • references/helius-wallet.openapi.json
  • references/usage-patterns.md
  • scripts/validate.sh

Open the folder on GitHubat commit 562d47c

Compare with similar skills

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Works with

Categories

Questions about Helius Openapi Skill

What does Helius Openapi Skill do?

Operate Helius Wallet API reads through UXC with a curated OpenAPI schema, API-key auth, and read-first guardrails. Helius Openapi Skill is an agent skill from holon-run/uxc. Operate Helius Wallet API reads through UXC with a curated OpenAPI schema, API-key auth, and read-first guardrails.

When should I use Helius Openapi Skill?

Helius Openapi Skill fits situations like: tasks that involve OpenAPI specifications.

How do I install Helius Openapi Skill in Claude Code?

Run `npx skills add holon-run/uxc --skill helius-openapi-skill -a claude-code`. Or copy the skill folder (skills/helius-openapi-skill in holon-run/uxc) into .claude/skills/helius-openapi-skill in your project. Claude Code loads it when a task matches its description.

How do I install Helius Openapi Skill in Codex?

Run `npx skills add holon-run/uxc --skill helius-openapi-skill -a codex`. Or copy the skill folder (skills/helius-openapi-skill in holon-run/uxc) into .agents/skills/helius-openapi-skill in your project. Codex loads it when a task matches its description.

Can I use Helius Openapi Skill 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 holon-run/uxc --skill helius-openapi-skill -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/helius-openapi-skill, .gemini/skills/helius-openapi-skill, .github/skills/helius-openapi-skill and .opencode/skills/helius-openapi-skill in your project.

What does Helius Openapi Skill need to run?

Going by SKILL.md and its folder, Helius Openapi Skill needs a shell for the scripts in its folder and credentials named HELIUS_API_KEY. Our summary lists: A Bash shell; A credential in HELIUS_API_KEY.

Does Helius Openapi Skill access the network?

SKILL.md names 2 domains. In commands or code: api.helius.xyz; the agent is likely to contact it when it follows the instructions. As links in the text: helius.dev. This is read from the text; nothing was executed.

Is Helius Openapi Skill 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Helius Openapi Skill use?

Helius Openapi Skill is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Helius Openapi Skill use?

About 1.1k tokens (SKILL.md is roughly 4.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.9k tokens, read only when the agent opens those files.

What are the alternatives to Helius Openapi Skill?

Skills that share tags, products or a category with Helius Openapi Skill: ToolJet Marketplace Plugin Builder (ToolJet/ToolJet, 41k stars), Step Parts (earthtojake/text-to-cad, 18k stars), API Designer (Jeffallan/claude-skills, 12k stars) and OpenAPI to MCP Server (mcp-use/mcp-use, 11k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Helius Openapi Skill?

holon-run (a GitHub organization) maintains it in holon-run/uxc, which has 116 GitHub stars. The repository holds 62 skills in this directory. The repository was last updated on September 15, 2026.

Source: holon-run/uxc on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.