Skip to main content
Glama
Sign In

Vibes-Coded Agent Tools

by io.github.doteyeso-ops
OverviewDiscussionsAdmin

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.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "action": "<action>"
    },
    "name": "vc_agent_state_guard"
  }
}

Input 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

NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

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 Tools toolsInspect
Try in Browser
One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Glama MCP Gateway

Add one secure layer between your agents and this server.

Resources