Borrowing it
Nothing to install: this file belongs to Neschadin/askell-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Neschadin/askell-mcp/main/.cursor/skills/askell-docs/SKILL.mdgit clone --depth 1 https://github.com/Neschadin/askell-mcpWrote 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/neschadin/askell-mcp/askell-docs)<a href="https://agentmods.dev/skills/neschadin/askell-mcp/askell-docs"><img src="https://agentmods.dev/badge/skills/neschadin/askell-mcp/askell-docs/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/neschadin/askell-mcp/askell-docs"><img src="https://agentmods.dev/badge/skills/neschadin/askell-mcp/askell-docs.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 | $0.00105 | $0.05329 |
| Opus 5.5 | $0.00042 | $0.02132 |
| Sonnet 5.5 | $0.00021 | $0.01066 |
| Haiku 4.5 | $0.00011 | $0.00533 |
Grade A, and why
askell-docs 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 today.
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 — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Live Askell docs
Prose docs move independently of the bundled OpenAPI. Live pages beat memory.
Sources
| What | Where | How |
|---|---|---|
| LLM index (start here) | https://docs.askell.is/llms.txt | Fetch, pick the page, fetch that URL |
| OpenAPI v1/v2 (endpoints) | spec/openapi-v1.json, spec/openapi-v2.json |
Already in repo; refresh with bun run sync-specs |
| Runtime MCP resources | askell://spec/v1, askell://spec/v2, askell://docs/webhook-events |
For MCP clients, not Cursor-agent context |
Index pages (from llms.txt):
- Getting started — https://docs.askell.is/en/getting_started/index.html
- Authentication — https://docs.askell.is/en/api/authentication.html
- Subscription Contracts V2 — https://docs.askell.is/en/api/subscription_contracts_v2.html
- Subscriptions (legacy) — https://docs.askell.is/en/api/subscriptions.html
- Payments — https://docs.askell.is/en/api/payments.html
- 3D Secure — https://docs.askell.is/en/api/3dsecure.html
- Embedded checkout — https://docs.askell.is/en/api/embedded_checkout.html
- Payment pages — https://docs.askell.is/en/api/payment_pages.html
- Webhooks — https://docs.askell.is/en/api/webhooks.html
- Wallet pass barcodes — https://docs.askell.is/en/api/wallet_pass_barcodes.html
- Coupons and promotion codes — https://docs.askell.is/en/api/coupons.html (linked from the V2 contracts page; not in
llms.txtyet)
Prefer /en/. Icelandic is /is/.
Live Swagger JSON (askell.is/api/swagger/*.json) is upstream only — input to bun run sync-specs. Do not fetch it to answer schema questions. v1 is overlaid in src/openapi/patch-v1.ts (drops fake POST /your-webhook-url/, Customer read schema, missing success bodies). Bundled spec/openapi-v1.json is the patched document (info.x-askell-mcp-patched). Most inbound webhook payloads are still not in OpenAPI — askell://docs/webhook-events. Exception: fulfillment_order.* is V2FulfillmentOrder. style/explode are stripped at describe time for MCP outputSchema, not because Askell is wrong.
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.
- today Changed · +1 lines 0c3c79a2f87d
- 15d ago Changed 947ef7702640
- 22d ago Changed 0ec7a4f986ac
- 23d ago Changed · +1 lines 45f43c5f1df5
- 25d ago Changed · +2 lines 291330513c05
- 29d ago Changed cee30c456fcb
- 1mo ago Changed · +7 lines f19983ca5304
- 1mo ago Changed · +1 lines e88c2be434e5
- 1mo ago Changed · -1 lines 238b77301120
- 1mo ago First seen · 72 lines · 105 tokens per session scan A 41ddfac1bfbe
askell-docs is a skill published in the GitHub repository Neschadin/askell-mcp (1 stars, last pushed 2d ago), licensed MIT. It adds 105 tokens to every session and 5,329 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-09-04.
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