Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add twells89/sigma-migration-skills/plugin install sigma-authoringWrote 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/twells89/sigma-migration-skills/sigma-api)<a href="https://agentmods.dev/skills/twells89/sigma-migration-skills/sigma-api"><img src="https://agentmods.dev/badge/skills/twells89/sigma-migration-skills/sigma-api/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.
<a href="https://agentmods.dev/skills/twells89/sigma-migration-skills/sigma-api"><img src="https://agentmods.dev/badge/skills/twells89/sigma-migration-skills/sigma-api.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00106 | $0.02265 |
| Opus 5 | $0.00053 | $0.01132 |
| Sonnet 5 | $0.00021 | $0.00453 |
| Haiku 4.5 | $0.00011 | $0.00227 |
Grade A, and why
sigma-api 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 10d 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.
Use whenever the user wants to call the Sigma API directly with curl/HTTP, How it starts
The opening of the file, as written. The whole thing — 149 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Sigma REST API Authentication
Authenticate against the Sigma Computing REST API and obtain a bearer token. This skill is a prerequisite for any skill that calls the Sigma API directly with curl.
curl, jq, and base64 must be available. curl and base64 ship with macOS and most Linux distros; jq usually does not — install with brew install jq (macOS) or apt install jq (Debian/Ubuntu).
Reference Index
| File | When to load |
|---|---|
| reference/browser-oauth-login.md | The user wants an interactive browser sign-in (OAuth authorization-code + PKCE) instead of a client ID/secret — the discovery-driven flow, code exchange, and encrypted refresh-token storage. |
Base URL Selection
The host depends on the user's Sigma cloud and region. Confirm with the user before exporting. The user can also look up their base URL in Administration → Developer Access in the Sigma app.
The authoritative list lives in the Sigma help docs: Supported regions, data platforms, and features. Mirror below:
| Cloud | Region | Base URL |
|---|---|---|
| AWS | US West (Oregon) | https://aws-api.sigmacomputing.com |
| AWS | US East (N. Virginia) | https://api.us-a.aws.sigmacomputing.com |
| AWS | Canada (Central) | https://api.ca.aws.sigmacomputing.com |
| AWS | Europe (Frankfurt) | https://api.eu.aws.sigmacomputing.com |
| AWS | Asia Pacific (Sydney) | https://api.au.aws.sigmacomputing.com |
| AWS | UK (London) | https://api.uk.aws.sigmacomputing.com |
| Azure | US (Virginia) | https://api.us.azure.sigmacomputing.com |
| Azure | Europe (Netherlands) | https://api.eu.azure.sigmacomputing.com |
| Azure | Canada (Toronto) | https://api.ca.azure.sigmacomputing.com |
| Azure | UK (London) | https://api.uk.azure.sigmacomputing.com |
| Azure | Australia | https://api.au.azure.sigmacomputing.com |
| GCP | US (Iowa) | https://api.sigmacomputing.com |
| GCP | Saudi Arabia (Dammam) | https://api.sa.gcp.sigmacomputing.com |
What ships with it
8 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.
- generated/cline/sigma-api.md 9.9 KB
- generated/codex/AGENTS.md 9.9 KB
- generated/continue/sigma-api.md 9.9 KB
- generated/cursor/rules/sigma-api.mdc 10 KB
- reference/browser-oauth-login.md 7.2 KB
- scripts/browser-login.sh 14 KB runs code
- scripts/get-token.sh 2.7 KB runs code
- scripts/refresh-token.sh 4.5 KB runs code
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.
- 10d ago First seen · 149 lines · 106 tokens per session scan A 76492373c863
sigma-api is a skill published in the GitHub repository twells89/sigma-migration-skills (14 stars, last pushed yesterday), licensed MIT. It adds 106 tokens to every session and 2,265 once invoked, about $0.0005 per session on Opus 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 2026-08-30.
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