cost-tracking SKILL.md skillA
cost-tracking from ericrisco/rsc-harness is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ericrisco/rsc-harness/cost-tracking@git:20261020.550e1aaPins git:20261020.550e1aa in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ericrisco/rsc-harness
- Path
skills/cost-tracking/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261020.550e1aa, committed Oct 20, 2026
- First version recorded
- Jun 2, 2026
- Size
- 12,991 bytes
- Repository stars
- 236
- License
- MIT
Use when metering and capping AI or cloud app spend — tokens read from the response `usage` object, priced off a dated rate table, ledgered per user/tenant/feature, with alerts and a hard cap before the bill. NOT cash runway (that is `finance-ops`), NOT cost-per-unit margin (that is `unit-economics`), NOT booking the spend (that is `bookkeeping`).
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Cost tracking You are building the money meter for an AI or cloud app: every model call gets a token count, a price, a ledger row, and a budget check — so a cap fires *before* the invoice, not when finance forwards it in a panic. Model-API spend roughly doubled from $3.5B to $8.4B between late 2024 and mid 2025 (firecrawl.dev best-llm-observability-tools, accessed 2026-06-02); the bill is now big enough to need a guardrail, not a spreadsheet at month-end. The chain you build, in order — each step feeds the next: 1. **Capture** — read tokens from the response, not from a pre-send guess. 2. **Price** — multiply tokens by a *versioned, dated* rate table. 3. **Ledger** — append one idempotent row per request, tagged for attribution. 4. **Budget** — roll the ledger up against a soft and a hard threshold. 5. **Guard** — alert, degrade, or refuse before the threshold becomes an invoice. The one rule that organizes everything: **bill against the response `usage` object. Anything you compute before the call is an estimate — good only for the pre-flight cap check, never for the ledger.** ## What this skill produces …
Read the whole file at its exact version.
How to install
mdr add ericrisco/rsc-harness/cost-tracking@sha256:b7851ebed3c173fbThe line at the top of this page pins the label git:20261020.550e1aa, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_xp7mbd2kyjeahwz5)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jun 2, 2026 and Oct 20, 2026, about one every 70 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261020.550e1aa latest | 2026-10-20 | 550e1aa | 12,991 B | A | view · diff |
| git:20260729.3ecb845 | 2026-07-29 | 3ecb845 | 12,725 B | A | view · diff |
| git:20260602.ebb0210 | 2026-06-02 | ebb0210 | 13,438 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (12991 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
ericrisco/rsc-harness · 236 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_xp7mbd2kyjeahwz5 GET https://markdownregistry.com/api/v1/resolve?ref=ericrisco/rsc-harness/cost-tracking GET https://markdownregistry.com/api/v1/blob/b7851ebed3c173fbce457880cb1924771ecb809be43790230c0063787251096e
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
More from ericrisco/rsc-harness
Every file in ericrisco/rsc-harness