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 rules/postoaklabs/ainumbers-mcp-apps/mcp-usagegit clone --depth 1 https://github.com/PostOakLabs/ainumbers-mcp-appsWrote 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/rules/postoaklabs/ainumbers-mcp-apps/mcp-usage)<a href="https://agentmods.dev/rules/postoaklabs/ainumbers-mcp-apps/mcp-usage"><img src="https://agentmods.dev/badge/rules/postoaklabs/ainumbers-mcp-apps/mcp-usage.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 | $0.00017 | $0.00383 |
| Opus 5 | $0.00009 | $0.00192 |
| Sonnet 5 | $0.00003 | $0.00077 |
| Haiku 4.5 | $0.00002 | $0.00038 |
Grade A, and why
mcp-usage 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 3d 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.
What it actually says
AINumbers MCP server
Remote server at https://mcp.ainumbers.co/mcp (streamable HTTP, no auth, zero PII, all tools read-only).
Discovery flow
find_toolorlist_ainumbers_tools— search the catalog (532 client-side fintech tools) by keyword. Returns deep-links; prefill-enabled tools accept a#in=…hash parameter for one-click invocation with values already filled in.find_chainorbuild_workflow_links— look up a named multi-tool workflow (266 chains covering AML, crypto tax, capital/liquidity, agentic payments, etc.) and get ordered, prefill-ready deep-links with handoff notes between steps.run_chain— execute a named ChainGraph workflow end-to-end server-side and get back the composite artifact.verify_execution_hash— independently re-verify a returned artifact'sexecution_hash(WebCrypto SHA-256 over RFC 8785/JCS-canonical{policy_parameters, output_payload}).build_chaingraph/emit_chaingraph_artifact/build_session_receipt— compose ad-hoc multi-tool chains and receipts outside the named-chain catalog.
Notes
- 327 MCP tools total: 15 flagship tools render as interactive widgets, the rest are ChainGraph compute nodes plus the discovery/utility tools above.
- Every tool declares
readOnlyHint: true— nothing on the server or in your environment is modified by any call. - Full docs: https://ainumbers.co/mcp.html
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.
- 3d ago First seen · 23 lines · 17 tokens per session scan A 384d724a0cd6
mcp-usage is a cursor rule published in the GitHub repository PostOakLabs/ainumbers-mcp-apps (2 stars, last pushed 4d ago), licensed MIT. It adds 17 tokens to every session and 383 once invoked, about $0.0001 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 2026-08-31.
Other cursor rules, from other repositories
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Spanish & EU fiscal context for operating the Frihet ERP MCP tools correctly.
git-workflow
Branch hygiene — rebase on main before every PR and keep branches synced.
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Apply when handling credit card data, implementing secureProxyUrl flows, or working with payment security and proxy code. Covers PCI DSS compliance, Secure Proxy card tokenization, sensitive data handling rules, X-PROVIDER-Forward-To header usage, custom token creation, and the constraint that Secure Proxy applies…
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When the user asks about invoice generator, use invoice-generator-ai-mcp tools: generateinvoice, calculatetotals, validateinvoice, listtemplates.