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 skills/equinor/fusion-skills/fusion-devtoolsnpx skills add equinor/fusion-skills --skill fusion-devtoolsgit clone --depth 1 https://github.com/equinor/fusion-skillsWrote 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/skills/equinor/fusion-skills/fusion-devtools)<a href="https://agentmods.dev/skills/equinor/fusion-skills/fusion-devtools"><img src="https://agentmods.dev/badge/skills/equinor/fusion-skills/fusion-devtools.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 5.1 | $0.00082 | $0.01920 |
| Opus 5 | $0.00041 | $0.00960 |
| Sonnet 5 | $0.00016 | $0.00384 |
| Haiku 4.5 | $0.00008 | $0.00192 |
Grade A, and why
fusion-devtools 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 2d 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.
How it starts
The opening of the file, as written. The whole thing — 247 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Fusion DevTools
When to use
Use when you need to interact with Fusion platform services from the command line — calling APIs, getting tokens, discovering services, or looking up persons.
Typical triggers:
- "Call the People API"
- "Get a token for the context service"
- "Which services are available in production?"
- "Test this endpoint"
- "Resolve this person's Azure ID"
- "What's the base URL for the org service?"
- "Get me an access token I can pipe to jq"
Implicit triggers:
- Agent needs to verify an API contract or response shape
- Agent needs a bearer token for an HTTP request
- Agent needs to find which service key maps to a URL
- Agent needs to look up a person's identity for test data
When not to use
- Modifying backend service source code — use the service repo directly
- Deploying or publishing services — use CI/CD pipelines
- Infrastructure provisioning — use Terraform/Bicep
- Service Bus / SignalR debugging — use Azure portal or dedicated tooling
- Managing AI search indexes — separate ops concern
Prerequisites
Install fdev as a .NET global tool:
dotnet tool install --global --add-source "https://statoil-proview.pkgs.visualstudio.com/Fusion%20-%20Packages/_packaging/Fusion-Public/nuget/v3/index.json" fusion-devtools
Update to latest:
dotnet tool update --global --add-source "https://statoil-proview.pkgs.visualstudio.com/Fusion%20-%20Packages/_packaging/Fusion-Public/nuget/v3/index.json" fusion-devtools
Authenticate before first use:
fdev login
Core workflows
1 — Call a Fusion REST API
Use fdev rest to call any Fusion service. Service discovery resolves the base URL and acquires a token automatically.
fdev rest <serviceKey> '<path>'
The path must be quoted in zsh/bash to prevent ? glob expansion.
Examples:
# GET from people service (production)
fdev rest people '/persons/me?api-version=3.0'
# POST with JSON body
fdev rest context '/contexts?api-version=1.0' -m post -b '{"query":"test"}'
# POST with body from file
fdev rest people '/persons/search?api-version=3.0' -m post -b @request.json
# Different environment
fdev rest people '/persons/me?api-version=3.0' -e ci
# Save response to file
fdev rest people '/persons/me?api-version=3.0' -o response.json
# Full URL mode (skip discovery)
fdev rest --url https://httpbin.org/get --no-auth
# Custom scope override
fdev rest people '/persons/me?api-version=3.0' --scope api://my-app/.default
What ships with it
4 files 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.
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.
- 2d ago First seen · 247 lines · 82 tokens per session scan A 3619803c8caa
fusion-devtools is a skill published in the GitHub repository equinor/fusion-skills (1 stars, last pushed 4d ago), licensed MIT. It adds 82 tokens to every session and 1,920 once invoked, about $0.0004 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 2026-09-03.
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