sumsub-api-auth

sumsub-api-auth is a skill for Claude Code from sumsub/agent-skills. It costs 144 tokens per session (2,359 once invoked), scanned B, original, no licence file.

A guide for authenticating requests to the Sumsub API, a service used for identity verification, with an app token and secret key.

In plain words
What is it for?
Use it when calling Sumsub API endpoints, signing requests with HMAC-SHA256, or debugging request-signature problems.
Why use it?
It helps create correctly signed requests and investigate authentication failures such as HTTP 401 errors.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it when calling Sumsub API endpoints, signing requests with HMAC-SHA256, or debugging request-signature problems.

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Install with agentmods
npx agentmods add skills/sumsub/agent-skills/sumsub-api-auth
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 sumsub/agent-skills --skill sumsub-api-auth
Clone the repo
git clone --depth 1 https://github.com/sumsub/agent-skills

Made for: Claude Code.

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.

agentmods badge for sumsub-api-auth

README.md
[![agentmods](https://agentmods.dev/badge/skills/sumsub/agent-skills/sumsub-api-auth.svg)](https://agentmods.dev/skills/sumsub/agent-skills/sumsub-api-auth)
Your own site
<a href="https://agentmods.dev/skills/sumsub/agent-skills/sumsub-api-auth"><img src="https://agentmods.dev/badge/skills/sumsub/agent-skills/sumsub-api-auth.svg" alt="Measured on agentmods" height="20"></a>
Per session 144 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,359 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Socket pass 4 Sept 2026
  • Snyk pass 4 Sept 2026
How audits are shown
Origin unknown 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00144 $0.02359
Opus 5 $0.00072 $0.01179
Sonnet 5 $0.00029 $0.00472
Haiku 4.5 $0.00014 $0.00236

Measured 4d ago against content hash e31e143b8276, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade B, and why

sumsub-api-auth scanned grade B with 2 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 4d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/sumsub_curl.sh, scripts/sumsub_sign.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

Curl-based fallbacks (e.g. `curl --data-binary @raw-multipart.bin` after

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- [`scripts/sumsub_curl.sh`](scripts/sumsub_curl.sh) — sign + `curl` in one
skills/sumsub-api-auth/SKILL.md · 231 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

3 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.

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.

  1. 4d ago Changed · +2 lines e31e143b8276
  2. 8d ago First seen · 229 lines · 144 tokens per session scan B 573236b4ed39

Subscribe to this mod's changes

sumsub-api-auth is a skill published in the GitHub repository sumsub/agent-skills (6 stars, last pushed 4d ago), with no licence file. It adds 144 tokens to every session and 2,359 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.