What is creditkarma-fpx?

A command-line method for reading Credit Karma transactions, using fpx to capture a signed-in browser session and curl to query the service afterward. Credit Karma is a personal-finance website.

It is for capturing Credit Karma session cookies, syncing transaction data, refreshing that session, and querying locally stored transaction or spending information.

It provides transaction access without running the Credit Karma MCP server and avoids repeatedly logging in through a script.

creditkarma-fpx — Skill for Claude Code by chrischall/creditkarma-mcp

Install

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.

Any agent

npx skills add chrischall/creditkarma-mcp --skill creditkarma-fpx

Clone the repo

git clone --depth 1 https://github.com/chrischall/creditkarma-mcp

Made for: Claude Code.

Or install creditkarma-mcp, the plugin that ships this one along with the rest of its 2 skills, 2 MCP servers.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/chrischall/creditkarma-mcp/creditkarma-fpx/github.svg)](https://agentmods.dev/skills/chrischall/creditkarma-mcp/creditkarma-fpx)

Your own site

<a href="https://agentmods.dev/skills/chrischall/creditkarma-mcp/creditkarma-fpx"><img src="https://agentmods.dev/badge/skills/chrischall/creditkarma-mcp/creditkarma-fpx/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/chrischall/creditkarma-mcp/creditkarma-fpx"><img src="https://agentmods.dev/badge/skills/chrischall/creditkarma-mcp/creditkarma-fpx.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,142 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00081	$0.02142
Opus 5.5	$0.00032	$0.00857
Sonnet 5.5	$0.00016	$0.00428
Haiku 4.5	$0.00008	$0.00214

Measured 24d ago against content hash 8bc9653ffdde, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

creditkarma-fpx 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 24d 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.

capture the signed-in session cookie once, then curl the GraphQL

skills/creditkarma-fpx/SKILL.md · 170 lines

How it starts

The opening of the file, as written. The whole thing — 170 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Credit Karma via fpx + curl (no MCP)

Credit Karma has no server-side login a script can drive — the only credential is the CKAT/CKTRKID cookies a real signed-in browser session already holds. There's also no bot wall on the API itself once you have those cookies: creditkarma-mcp's own client.ts proves plain Node fetch works fine against api.creditkarma.com/graphql and the refresh endpoint — fetchproxy is only ever used for the one-time cookie capture, never as a request path. So this skill is hybrid: fpx grabs the cookies once, then plain curl does every read and refresh from then on.

This mirrors the one live endpoint creditkarma-mcp actually calls (ck_sync_transactions → the GraphQL query in src/transaction.graphql). The other ck_* tools (ck_list_transactions, ck_get_spending_by_category, …) are local SQLite queries over already-synced data — there's no separate remote endpoint to reproduce for those.

One-time setup

npm install -g @fetchproxy/cli                                  # provides `fpx`
fpx profile add creditkarma --domain creditkarma.com
fpx profile declare creditkarma --cookie CKAT --cookie CKTRKID   # widen scope to these cookies
fpx pair -p creditkarma                                          # prints a pair code → approve in ContextMint Bridge

Requirements: the ContextMint Bridge browser extension installed (releases; it is the fetchproxy extension renamed, same maintainer — public source, verify a release zip with shasum -a 256 -c <zip>.sha256), with an open www.creditkarma.com tab you're signed into, and its Chrome Site access allowing creditkarma.com. CKAT/CKTRKID are HttpOnly (invisible to page JS) but fpx cookies reads them via the extension's chrome.cookies.get, same as @fetchproxy/bootstrap does inside the MCP. Pairing persists across invocations.

Capture the session (once per shell / once the token goes stale)

Read the full file on GitHub · 170 lines

Files

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.

references/requests.md 7.4 KB

Changes

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.

24d ago Changed · +7 lines 8bc9653ffdde
1mo ago Changed 98846c532f13
1mo ago Changed · +3 lines 96a59abaa542
2mo ago First seen · 160 lines · 81 tokens per session scan A 5c751fd1a4ac

Subscribe to this mod's changes

creditkarma-fpx is a skill published in the GitHub repository chrischall/creditkarma-mcp (1 stars, last pushed 3d ago), licensed MIT. It adds 81 tokens to every session and 2,142 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 2026-08-31.

Finance and fintech

creditkarma-fpx next to 6 skills from other repositories
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creditkarma-fpxchrischall/creditkarma-mcp	Skill	1	3d ago	MIT	A	81	Claude Code
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creditkarma-fpx