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Vibes-Coded Agent Security and Commerce Tools

by io.github.doteyeso-ops

vc_agent_state_guard

Read-onlyIdempotent

Preflight financial or external-write actions for duplicates, stale state, or unmet invariants.

Use before spending money or writing outside the agent sandbox.
Do not use for generic search — use vc_web_search.
Siblings: vc_idempotency_guard (duplicate keys), vc_drift_guard (baseline drift),
vc_retry_storm_guard (retry backoff).

Auth: X-Vibes-Key or x402 (~$0.02). Advisory only; no local writes.
Returns GO/NO-GO style JSON with reasons, or payment_required.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
stateNoCurrent agent/business state snapshot.
actionYesProposed action label (e.g. transfer, write_external, publish).
invariantsNoOptional invariant strings that must still hold.
payment_signatureNoOptional x402 PAYMENT-SIGNATURE if not using X-Vibes-Key.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

TDQS

A4.7/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already indicate readOnly, idempotent, and non-destructive, but the description adds important behavioral context: auth mechanism and cost (X-Vibes-Key or x402 ~$0.02), 'Advisory only; no local writes', and the GO/NO-GO JSON return with payment_required. This enriches the safety and side-effect profile beyond annotations. No contradiction with annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is compact and front-loaded: purpose, usage boundary, sibling differentiation, auth, side effects, and return shape each get one or two short lines. Every sentence provides actionable information with no filler.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has a rich output schema, full parameter documentation, and thorough annotations, the description covers the remaining essential context: when to invoke, cost/auth expectations, side-effect guarantees, and return style. Nothing needed for correct invocation is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already documents all parameters (action, state, invariants, payment_signature). The description adds only light semantic framing (e.g., that actions are financial/external-write) but does not need to compensate for missing schema documentation.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific verb and resource: 'Preflight financial or external-write actions' for duplicates, stale state, or unmet invariants. It also distinguishes itself from sibling guards by listing what each sibling handles, so an agent can tell them apart without inspecting schemas.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It explicitly says when to use the tool ('before spending money or writing outside the agent sandbox'), when not to use it ('Do not use for generic search'), and names the alternative (vc_web_search). It also names related guard siblings and their focus areas, leaving no ambiguity about tool selection.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

All Vibes-Coded Agent Security and Commerce Tools toolsInspect
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TDQS

A3.8/5.0
Disambiguation4/5

Most tools target a clearly distinct resource and action: notepad save/read/list/share/browse is cleanly separated from workspace create/read/write/list, and pairs like vc_web_search vs vc_page_markdown have explicit boundaries. The four guard tools (state, drift, idempotency, retry storm) share the same advisory-preflight pattern and could be confused at a glance, though their differing nouns and sibling cross-references reduce misselection.

Naming Consistency4/5

The vc_<domain>_<action> convention with the action verb last is consistent across most tools (v_c_notepad_save, v_c_workspace_create, v_c_square_post, v_c_drift_guard, v_c_attest_verify). Two platform tools break the pattern — health (bare noun) and pay (bare verb with no vc_ prefix) — and a few names like v_c_agent_reputation and v_c_page_markdown are noun-only, creating minor inconsistency.

Tool Count3/5

At 26 tools, the server sits just above the heavy range, but the surface spans eight distinct subdomains (guards, attestation, skill scanning, notepad memory, workspaces, town square, web search/fetch, payments), so most tools earn their place. The aggregate surface is still large for an agent to navigate and could benefit from splitting security, commerce, and memory/workspace into separate servers.

Completeness3/5

Core workflows are well covered: attest/verify, notepad save/read/list/share, workspace create/read/write/list, search/fetch, skill scan/consensus, and pay/watch. Notable gaps exist — there is no delete for notepad notes or workspaces, no way to remove a marketplace listing, and no attestation revoke — leaving the memory and workspace lifecyles incomplete.

Resources