Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add thenativeweb/claude-plugins/plugin install esdbWrote 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/thenativeweb/claude-plugins/verify-api-token)<a href="https://agentmods.dev/skills/thenativeweb/claude-plugins/verify-api-token"><img src="https://agentmods.dev/badge/skills/thenativeweb/claude-plugins/verify-api-token/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.
<a href="https://agentmods.dev/skills/thenativeweb/claude-plugins/verify-api-token"><img src="https://agentmods.dev/badge/skills/thenativeweb/claude-plugins/verify-api-token.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00030 | $0.00197 |
| Opus 5.5 | $0.00012 | $0.00079 |
| Sonnet 5.5 | $0.00006 | $0.00039 |
| Haiku 4.5 | $0.00003 | $0.00020 |
Grade A, and why
verify-api-token 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 1mo 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.
curl -s -i -X POST \ What it actually says
Verify API Token
Verify that an API token is valid for an EventSourcingDB instance.
Shared Instructions
First read ${CLAUDE_PLUGIN_ROOT}/shared/common.md. It explains how to determine the base URL and API token, how to handle NDJSON responses, and which conventions apply. Follow it throughout this skill.
Request
curl -s -i -X POST \
-H "authorization: Bearer ${ESDB_API_TOKEN}" \
"${ESDB_URL:-http://localhost:3000}/api/v1/verify-api-token"
Response
Returns 200 OK if the token is valid. Returns 401 Unauthorized if the token is invalid. Inform the user accordingly.
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.
- 1mo ago First seen · 26 lines · 30 tokens per session scan A 8ec412a4691d
verify-api-token is a skill published in the GitHub repository thenativeweb/claude-plugins (6 stars, last pushed 3mo ago), licensed MIT. It adds 30 tokens to every session and 197 once invoked, about $0.0001 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.
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