Costtell is a free tool that accepts a single line from a cloud billing report —
AWS, Azure or GCP — and returns a plain-language explanation of the service that
generated the charge, how its pricing works, and what typically drives the cost up.
It is a translation tool for cryptic billing lines, not a cost
management platform.
How to use it
1. Sign in at costtell.agen2ic.ai/app with your
email address. A free account is required — no credit card, no payment.
2. Open your cloud billing report (AWS Cost and Usage Report, Azure
billing CSV, or GCP bill). Find the line you do not understand.
3. Select the line, copy it verbatim, and paste it into the Costtell
input field. Press enter or click Explain this charge.
4. Read the explanation. You can copy it to your clipboard, or it is
saved to your history for later reference.
FAQ
Frequently asked questions
Q. What exactly do I paste?
Paste a single line from your billing CSV or report — one
row, copied verbatim. For example, “Amazon EC2 t3.medium Instance”
or “Azure Virtual Machines D2s v3”. You do not need to edit or
format it. If the line is from a different provider or contains a custom SKU, Costtell
will show a fallback message rather than inventing a service name.
Q. Which cloud providers are supported?
AWS, Azure, and GCP — the three major public cloud providers.
Costtell ships with 25+ curated billing patterns covering the most common services
for each (EC2, EBS, S3, Lambda, RDS … Azure VM, Blob, SQL … GCP Compute
Engine, Cloud Storage, BigQuery …). Each provider also has a catch-all pattern
for lines the curated set does not cover.
Custom or smaller providers (DigitalOcean, Linode, Hetzner, etc.) are not supported.
Q. Why do I need an account if the tool is free?
Your lookups are saved to your account so you can refer back to them later. The product
is designed for one person decoding their own bill — the account
is how the record belongs to you. Without an account, nothing would persist between
visits.
The fleet’s shared auth host (auth.agen2ic.ai)
handles sign-in. Costtell itself never sees your password.
Q. What happens if Costtell does not recognise the line?
You will see a fallback message naming the provider (AWS, Azure or GCP) and linking to
that provider’s billing console. Costtell never invents a service
name or pricing detail.
Unrecognised lines are most common when (a) the service is from a small or obscure
SKU not yet in the curated set, or (b) the wording in your bill varies from the pattern
the tool expects — billing descriptions differ by region and can change between
billing cycles.
Q. Can I save or share my lookups with a team?
No. Costtell is a single-person tool. There are no team workspaces,
shared history views, approvals, or sharing links. If you sign in, only you can see
your own lookup history. There is no way to share a lookup with another account.
Q. How do I delete my data?
There is no self-service delete endpoint yet. To request deletion of
your account and all associated lookup history, email
costtell@agen2ic.ai. Because no legal entity
has been registered for this product, this is a statement of intent rather than a
legally binding guarantee — the operator will action deletion requests promptly.
KNOWN LIMITATIONS
What Costtell does not do
Costtell is deliberately narrow. Here is what falls outside its scope — some of
these are design decisions, others are things not yet built:
✕No real-time cost tracking. Costtell cannot tell you what you are spending right now. It looks at a single past line and says what it means.
✕No recommendations. The tool does not suggest Reserved Instances, region moves, or alternative services. It explains the charge; you decide what to do.
✕No team or multi-account features. Each sign-in is one person. No shared workspaces, no org-level views, no approvals.
✕No email notifications. The fleet has no email sender. Costtell cannot send alerts, receipts, digests, or reminders. It does not watch your spend.
✕No self-service deletion. You must email to request account and data deletion. This endpoint does not exist yet.
✕No legal entity. No company has been registered for Costtell. The terms and privacy pages describe the product’s practices but are not legally binding contracts until the operator registers an entity.
✕No custom or smaller providers. Only AWS, Azure, and GCP billing patterns are shipped. DigitalOcean, Linode, Hetzner, and others are not covered.
✕Pattern-based, not per-line generation. Explanations are written for billing patterns, not generated individually per line. An obscure SKU or a regional wording variant may fall through to the catch-all or fallback.
CONTACT
How to reach us
Routine questions about using the tool, understanding an explanation, or account access
can be directed to:
Email:costtell@agen2ic.ai
agen2ic.ai accepts mail at any local part, so this address reaches a human and
identifies that it is about Costtell.
Response time: None guaranteed — this product has no support
SLA. The operator will respond as soon as possible.
Escalations
If your question involves a request for new features, a complaint about an inaccurate
explanation, a legal concern, or anything that requires a decision the front-line
support cannot make, it will be forwarded to the product owner. You will receive a
reply at the same email address when the owner has responded.
Before emailing, try the decoder tool — most questions are
answered by pasting the line and reading the explanation.