earnrate
io.github.cwasley/earnrate · version 0.2.10 · 2,272 weekly npm downloads · audited 2026-11-03
Notes
Findings
No hidden-instruction or invisible-character findings in any tool, prompt, or resource description.
Claude Connectors Directory readiness
- ✅ Every tool has a title 14 of 14 tools
- ✅ Every tool declares readOnlyHint or destructiveHint 14 of 14 tools
- ✅ Tool names are 64 characters or fewer All within limit
- ❌ Descriptions avoid instructions about model behavior or other tools 4 of 14 descriptions reference other tools or tell the model what it must do: best_cards_for, cheat_sheet, search_cards, add_card
- ✅ No hidden instructions or invisible characters in tool metadata None found
Checks the directory's published tool requirements that are visible from tools/list. Passing them does not guarantee acceptance.
What this server's tools can do
- Has delete or destructive operations:
remove_card
Not a vulnerability by itself. It tells you what an injected prompt could ask this server to do, so you can decide which tools need approval.
Supply chain
- Install scripts: none
- npm provenance: yes
- Source repository linked: yes
- License: (MIT AND CC-BY-NC-4.0)
- Direct dependencies: 4
Tools (14)
| Name | Title | Hint | Description |
|---|---|---|---|
best_card_for_purchase | Best card for a purchase | read-only | Which credit card earns the most rewards for a purchase, and why. With no cards given and no saved wallet, it ranks every card earnrate knows (in `allCards`): a complete answer for anyone. With cards named in the convers… |
resolve_merchant | Resolve a merchant | read-only | Shows how earnrate identifies a merchant: its spend category, likely MCC, which card networks it takes, confidence, and whether that came from curated data, Claude, or nowhere. Use it to explain or double-check a recomme… |
compare_welcome_offers | Compare welcome offers | read-only | Ranks the public welcome (sign-up) offers on cards the user doesn't have by first-year value: the bonus at the user's point values minus the first year's annual fee and any membership the card needs that the user doesn't… |
best_cards_for | Best cards for a purchase | read-only | Ranks every card earnrate knows that takes new applicants, not only the user's, for one purchase or category, each set up at its best (the right category pick, activated, cap unused), with its annual fee and what earning… |
simulate_spending | Simulate a year of spending | read-only | Spends monthly amounts for a year across every card earnrate knows, and ranks single cards and two-card pairs by rewards minus annual fees, and minus a membership a card needs (a Costco membership) unless the user has it… |
cheat_sheet | Cheat sheet | read-only | The card to use for each everyday kind of purchase right now: groceries, dining, gas, Amazon, Costco, travel, streaming, drugstores and everything else. With no cards given and no saved wallet, it picks from every card e… |
search_cards | Search cards | read-only | Finds credit cards in earnrate's catalog by name or issuer, e.g. "sapphire", "amex gold" or "bofa". Returns each card's id (for add_card), network, annual fee, whether it's already in the wallet, and what it needs set up… |
list_wallet | List wallet | read-only | Starts with a to-do list for the user's cards right now (bonuses to activate and their deadlines, categories to pick or confirm, caps nearly used up, welcome bonuses to finish and the weekly pace, yearly spend bonuses at… |
record_purchase | Record a purchase | writes | Records a purchase the user has already made, so spending caps, welcome-bonus progress and yearly spend milestones stay accurate for future recommendations. It updates the user's saved wallet. Only call it after the purc… |
add_card | Add a card | writes | Adds a card the user holds to their wallet by its id from search_cards, creating the wallet if there isn't one. The reply says what the card still needs (category picks, memberships, activations); ask the user about thos… |
update_card | Update a card | destructive | Changes settings on a card already in the wallet: its category picks for this period, checkout label, anniversary, activated categories, cap spending so far (capSpent), spending this year toward its spend milestones (mil… |
remove_card | Remove a card | destructive | Removes a card from the wallet, with its tracked cap usage, bonus progress and yearly spending. Memberships and point values stay, even when the last card goes. Only when the user says they no longer have it or don't wan… |
set_memberships | Set memberships | destructive | Sets the memberships that unlock some cards' rates, such as amazon-prime for Prime Visa's 5% or a Bank of America Preferred Rewards tier, and costco for a Costco membership (so spending answers don't count its cost again… |
set_point_values | Set point values | destructive | Saves what the user's points are worth to them, in cents per point, in their saved wallet; every answer then compares cards at those values unless a valuation profile is asked for. No saved cards are needed. Use it when … |
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