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 skills add apideck-libraries/api-skills --skill pennylanegit clone --depth 1 https://github.com/apideck-libraries/api-skillsWrote 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/apideck-libraries/api-skills/pennylane)<a href="https://agentmods.dev/skills/apideck-libraries/api-skills/pennylane"><img src="https://agentmods.dev/badge/skills/apideck-libraries/api-skills/pennylane/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/apideck-libraries/api-skills/pennylane"><img src="https://agentmods.dev/badge/skills/apideck-libraries/api-skills/pennylane.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 | $0.00077 | $0.02450 |
| Opus 5.5 | $0.00031 | $0.00980 |
| Sonnet 5.5 | $0.00015 | $0.00490 |
| Haiku 4.5 | $0.00008 | $0.00245 |
Grade A, and why
pennylane 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 20d 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.
curl 'https://unify.apideck.com/proxy' \ How it starts
The opening of the file, as written. The whole thing — 192 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Pennylane (via Apideck)
Access Pennylane through Apideck's Accounting unified API — one of 34 Accounting connectors that share the same method surface. Code you write here ports to Access Financials, Acumatica, banqUP and 30 other Accounting connectors by changing a single serviceId string. Apideck handles auth, pagination, rate limiting, and retries so you don't write per-tenant Pennylane plumbing.
Beta connector. Pennylane is currently in beta on Apideck. Expect partial resource coverage and occasional mapping gaps. Always verify coverage (see below) and fall back to the Proxy API for unsupported operations.
Quick facts
- Apideck serviceId:
pennylane - Unified API: Accounting
- Auth type: oauth2
- Status: beta
- Apideck setup guide: Connection guide
- Gotchas: page
- Pennylane docs: https://pennylane.readme.io
- Homepage: https://www.pennylane.com/
At a glance
- Implementation difficulty: moderate — Partner-Issued Credentials Required — OAuth apps are provisioned manually by Pennylane's Partnerships team (no self-service portal); otherwise a standard OAuth authorization-code connect.
- Vendor partnership required: yes (developer portal) — OAuth Client ID and Secret are issued by Pennylane's Partnerships team after manual validation. No fee.
- Apideck-managed credentials: not available — Consumers supply their own partnership-issued OAuth credentials in every environment.
- Account type required: Active Pennylane account (app.pennylane.com) with at least one company set up.
- Consumer access level: A user with permission to authorize third-party (OAuth) apps for the company.
- Sandbox: available — Existing accounts self-serve a developer API token for testing. OAuth partner-app credentials still require the Partnerships team. Same limits as production.
- Costs: No partnership or API fees; consumers need a Pennylane subscription that includes API access.
- Rate limits: 25 requests per 5 seconds per token (production and sandbox).
- Authentication: Authorization Code flow.
- Webhooks: Virtual webhooks — created and updated events for customers, suppliers, invoices, invoice items and bills.
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.
- 20d ago Changed · +1 lines ab840c12b1fd
- 1mo ago First seen · 191 lines · 77 tokens per session scan A 8c563be553ab
pennylane is a skill published in the GitHub repository apideck-libraries/api-skills (5 stars, last pushed yesterday), licensed Apache-2.0. It adds 77 tokens to every session and 2,450 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-09-03.
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