Ask the odds of a future event and get a probability backed by research. This skill wraps the Axion API. It starts a research run, polls until the forecast lands, and reads back the probability with the reasoning and sources behind it.
It installs in any agent that follows the Agent Skills standard: Claude Code, OpenClaw, Hermes, Codex, Cursor, Gemini CLI, and others. One folder, every runtime.
Axion runs an orchestrator and a team of research agents over your question. They search the web, pull market data, read SEC filings, and run Fermi estimates, then cite what they found. Each forecast returns a probability between 0 and 1, a confidence interval, a resolution date, and the evidence the estimate rests on.
Reach for it when someone asks how likely something is: an election, a rate decision, a deal closing, a product shipping on time.
The skill reads an Axion API key from AXION_API_KEY.
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Create an account at https://axion.eternis.ai.
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Create a key on the API Keys page and add credits. API usage is prepaid and billed separately from the monthly plan.
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Export the key:
export AXION_API_KEY="axn_sk_..."
/plugin marketplace add EternisAI/axion-skill
/plugin install axion@axion-forecasting
Ask a forecasting question and Claude loads the skill on its own, or invoke it directly as /axion:axion.
npx skills add https://github.com/EternisAI/axion-skill --skill axion
clawhub install @eternis/axion
hermes skills tap add EternisAI/axion-skill
hermes skills install EternisAI/axion
A run takes fifteen seconds to three minutes. The skill starts a forecast, then polls until the status reaches completed or failed:
# start
curl -s https://api.axion.eternis.ai/forecasts \
-H "Authorization: Bearer $AXION_API_KEY" \
-H "Content-Type: application/json" \
-d '{"input": "Will the Fed cut rates in June 2026?", "effort": "high"}'
# poll
curl -s https://api.axion.eternis.ai/forecasts/<id> \
-H "Authorization: Bearer $AXION_API_KEY"effort takes low, medium, or high. max_forecasts (1 to 10) widens the run. Read the result from the forecasts[] array.
Full request and response fields, webhooks, and credit rates live at https://axion.eternis.ai/docs. The skill bundles a snapshot at skills/axion/references/axion-api.md; regenerate it from https://axion.eternis.ai/docs.md when the API changes.
MIT. See LICENSE.