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 agentmods add skills/nutdnuy/webull-openapi-ai-plugin/webull-eventsnpx skills add nutdnuy/webull-openapi-AI-Plugin --skill webull-eventsgit clone --depth 1 https://github.com/nutdnuy/webull-openapi-AI-PluginWrote 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/nutdnuy/webull-openapi-ai-plugin/webull-events)<a href="https://agentmods.dev/skills/nutdnuy/webull-openapi-ai-plugin/webull-events"><img src="https://agentmods.dev/badge/skills/nutdnuy/webull-openapi-ai-plugin/webull-events.svg" alt="Measured on agentmods" height="20"></a>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 | $0.00047 | $0.00645 |
| Opus 5 | $0.00023 | $0.00322 |
| Sonnet 5 | $0.00009 | $0.00129 |
| Haiku 4.5 | $0.00005 | $0.00064 |
Grade A, and why
webull-events scanned grade A with 0 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 4d 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 32 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Webull events and streaming
Read references/endpoints.json, follow each HTTP control entry's schema_ref into references/openapi.json, and read references/authentication.md for request shapes and credentials. Consult the official Webull Open API reference, Market Data API FAQ, and Trading API Getting Started.
First-use onboarding
Before explaining or starting a streaming workflow, check for WEBULL_APP_KEY and WEBULL_APP_SECRET in the secure environment. If the API Key is missing, ask the user to configure it securely and stop. Never request or echo secrets in chat.
Supported streaming interfaces
POST /openapi/market-data/streaming/subscribe— MQTT market-data subscription operation; official reference index.POST /openapi/market-data/streaming/unsubscribe— MQTT market-data unsubscribe operation; official docs.subscribeTradeEvents— conceptual gRPC trade-event subscription (the catalog entry hastransport: grpcand no HTTP method/path); official getting-started docs.
Workflow
- Read the catalog entry for the MQTT subscribe/unsubscribe request shape and the auth reference for connection prerequisites. Treat subscribe/unsubscribe as streaming lifecycle operations, not ordinary one-shot data reads.
- Explain connection identity, topic/session lifecycle, heartbeat/reconnect behavior, permissions, and documented limits from the official docs. Do not promise delivery or silently restore subscriptions after disconnect unless the client explicitly implements that behavior.
- The shared CLI is an HTTP request client. It does not open or hold persistent MQTT or gRPC sessions. You may use it only for a documented one-shot control request, with catalog-shaped placeholders:
What ships with it
1 file 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.
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.
- 4d ago First seen · 32 lines · 47 tokens per session scan A ef7987c988a6
webull-events is a skill published in the GitHub repository nutdnuy/webull-openapi-AI-Plugin (26 stars, last pushed 1mo ago), licensed MIT. It adds 47 tokens to every session and 645 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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