api-runtime-verify

api-runtime-verify is a skill for Claude Code from Mozurok/fhorja.dev. It costs 95 tokens per session (5,539 once invoked), scanned A, original, MIT.

A runtime check for an implemented backend HTTP interface, meaning the URLs and requests a service exposes. It records each request and response, then returns PASS, FAIL, or BLOCKED.

In plain words
What is it for?
Use it to test backend routes against their acceptance requirements and document the exact requests, HTTP results, and response shapes.
Why use it?
It catches differences between what an endpoint is expected to do and what it actually returns when used, including status, content type, and response structure.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: reads .claude/ paths; reads ~/.codex paths; mentions Codex.

Good fit Use it to test backend routes against their acceptance requirements and document the exact requests, HTTP results, and response shapes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mozurok/fhorja.dev/api-runtime-verify
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 Mozurok/fhorja.dev --skill api-runtime-verify
Clone the repo
git clone --depth 1 https://github.com/Mozurok/fhorja.dev

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 api-runtime-verify

README.md
[![agentmods](https://agentmods.dev/badge/skills/mozurok/fhorja.dev/api-runtime-verify/github.svg)](https://agentmods.dev/skills/mozurok/fhorja.dev/api-runtime-verify)
Your own site
<a href="https://agentmods.dev/skills/mozurok/fhorja.dev/api-runtime-verify"><img src="https://agentmods.dev/badge/skills/mozurok/fhorja.dev/api-runtime-verify/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.

agentmods 80×15 button for api-runtime-verify

Your own site · 80×15
<a href="https://agentmods.dev/skills/mozurok/fhorja.dev/api-runtime-verify"><img src="https://agentmods.dev/badge/skills/mozurok/fhorja.dev/api-runtime-verify.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,539 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original 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 $0.00095 $0.05539
Opus 5.5 $0.00038 $0.02216
Sonnet 5.5 $0.00019 $0.01108
Haiku 4.5 $0.00010 $0.00554

Measured 11d ago against content hash 1de58371ce9e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

api-runtime-verify 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 11d 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.

.claude/skills/api-runtime-verify/SKILL.md · 137 lines

How it starts

The opening of the file, as written. The whole thing — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Output contract, in brief. This body is over the per-skill re-injection cap, so after a compaction the sections below are truncated away while this summary survives. They remain authoritative in full; re-read this file before emitting if you need them.

  • Standard output layout (required): Produce the command output using this structure (English only):
  • Artifact changes: Follow ## Global output contract in WORKFLOW_OPERATING_SYSTEM.md for APPLIED / PROPOSED / SKIP rules. Every listed file...
  • Command transcript: Brief audit trail (max 4 lines; max 3 in no-op runs with NO_OP_TRACE).
  • Handoff: Use the adaptive ending format of WORKFLOW_OPERATING_SYSTEM.md ## Global output contract. Every Handoff is one fenced text b...
  • Definition of done (command output): Every probed route shows the request that was made, the HTTP status, the response content-type, and the observed body shape; a rou...

Act as a senior backend engineer probing an implemented HTTP surface and verifying its runtime behavior before the slice is closed.

Goal: Probe the implemented routes, record what each request actually sent and what the service actually answered, and decide a PASS, FAIL, or BLOCKED runtime gate for the slice's acceptance behavior. This is the feedback edge the static checks cannot cover: the route that typechecks and returns 500 on the first real request, the handler that answers 200 with an HTML error page where the contract promised JSON, the write that reports success and persists nothing, the auth check that never runs on an anonymous request. It exists because no command in this workflow owned runtime HTTP behavior, so the backend half of a full-stack slice closed on static evidence alone while the frontend half had a runtime gate (DECISIONS D-6, 2026-07-27). The verdict is Layer-1 runtime evidence per the three-layer model (wos/gate-conditions.md, ADR-0048): the probe's actual output is the evidence, and it feeds Layer 2 (review-hard, security-review) and Layer 3 (human approval), never replacing them. The command verifies and routes; it does not write or fix code.

Mandatory context bootstrap (before any output):

  • Read these sections in WORKFLOW_OPERATING_SYSTEM.md first:
    • ## LLM execution contract
    • ## Editor mode policy (mode definitions only; the tool mapping table is lazy-loaded in wos/editor-mode-mappings.md and needed only for non-Claude-Code tools)
    • ## Global output contract (including Adaptive handoff and Mode selection rule)
    • ## Cross-cutting workflow guardrails
  • Bootstrap tiers: the light-weight commands (branch-commit, what-next, where-we-at, slice-closure, compact-task-memory) plus the high-frequency implement-approved-slice and sync-task-state (v3 wave1 item D) read the four sections above with two subsections of ## Cross-cutting workflow guardrails skipped: ### External web access (centralized) and ### Sequencing heuristics (by phase). Everything else is read at every tier, including ### Proposal vs approved persistence and ### Substrate peer ownership (per ADR-0034), since all seven write substrate sections and reason about PROPOSED (state-reconcile stays on the full tier for cross-artifact judgment). The full tier is measured at 12109 tokens, the four always-read sections combined; the two skipped subsections are 1,034 of those (measured 2026-09-28), so the reduced tier is about 11,074. The leaf-reviewer tier (verify-against-rubric, ADR-0226) reads only ## Global output contract, measured at 5215 tokens, plus its rubric.
  • Session bootstrap reuse (skip-if-unchanged; v3 wave1 item D): WHEN this conversation already read the bootstrap sections in an earlier turn still VISIBLE in the context window AND WORKFLOW_OPERATING_SYSTEM.md has not changed since, the command MAY skip the re-read and cite the earlier one, emitting one Command transcript line: Bootstrap: reusing turn <N> read, WOS unchanged. Scoped exception to the context-budget re-fetch rule (wos/context-budget.md, "The re-fetch rule"), because these sections are one large, static, byte-identical read repeated every turn; every other tool result still re-fetches. VISIBLE means the section text itself is still present and quotable now, not merely that a record of the earlier read exists: a harness that clears a tool result while the record survives (ADR-0114) has not satisfied VISIBLE, and self-declared memory after a compaction never qualifies. A stateless-per-turn harness is excluded. The transcript line is mandatory; a silent skip is invalid output.
  • Resolving the spec and wos/<topic>.md: canonical repository FIRST. Otherwise use active-adapter docs: ~/.claude/workflow-docs (CLAUDE_WORKFLOW_DOCS_DIR), ~/.cursor/workflow-docs (WORKFLOW_DOCS_DIR; project .cursor/workflow-docs on project installs), ~/.codex/workflow-docs (CODEX_WORKFLOW_DOCS_DIR), or <kimi-home>/workflow-docs (KIMI_WORKFLOW_DOCS_DIR). Nonempty overrides win. Kimi home: KIMI_CODE_HOME, else existing ~/.kimi-code, else existing ~/.kimi, default ~/.kimi-code. Use one root for both paths; try other adapters if absent or unknown. Report resolved root, fallback to other adapters, or missing mandatory context in ### Command transcript. Installed snapshots refresh and prune retired topics only on sync.
  • Read additional sections only when relevant to this command's role.
  • Align all routing recommendations and next-command suggestions with the current command set.
  • Official next-command names only: recommendations, including Run now, use registered names from commands/<name>.md or commands/<name>/SKILL.md; installed mode uses the available Fhorja command or skill inventory. No invented aliases. Run now: none with Mode: N/A ends only if no honest next step exists, defined under ### Official command names (routing integrity) (ADR-0126). Required inputs:
  • active task folder path
  • the implemented slice or feature under verification, and its acceptance behavior (the observable outcome that means it works, ideally the slice's EARS exit criterion)
  • the running backend under verification: its base URL, how it was started (a local dev server, a container, a preview deployment), and which build or revision is answering there, so the probe is known to reach the code under verification rather than a stale or shared instance
  • the route set to probe: per route its method, its path, its auth posture (anonymous, authenticated, or a deliberately wrong tenant), and the request body shape when one is sent
  • the declared contract for those routes when one exists (an OpenAPI or schema document, a captured REFERENCES.md entry for a third-party API, or the task's own API_CONTRACT_REVIEW.md), so an observed shape is compared against a declared one rather than against an assumption

Read the full file on GitHub · 137 lines

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. 11d ago Changed · -64 tokens per session 1de58371ce9e
  2. 14d ago Changed · -1 lines 677b25ed8114
  3. 21d ago Changed · -1 lines a1ba64e47e68
  4. 22d ago Changed · -22 lines · -57 tokens per session 4641de058db0
  5. 1mo ago First seen · 161 lines · 216 tokens per session scan A e6bf11e455b4

Subscribe to this mod's changes

api-runtime-verify is a skill published in the GitHub repository Mozurok/fhorja.dev (10 stars, last pushed 12d ago), licensed MIT. It adds 95 tokens to every session and 5,539 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-08-31.

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