---
type: DecisionTool
title: "Visa Trusted Agent Protocol (TAP) Signature Inspector"
description: "Parses and scores Visa TAP Signature-Input / Signature header pairs (RFC 9421 HTTP Message Signatures). Runs a 5-question TAP Readiness Assessment. Branch A, node 2 of the Agentic Rail Chain. Promoted from T286."
resource: https://ainumbers.co/chaingraph/art-23-visa-trusted-agent-protocol-inspector.html
tags: ["compliance_control", "wave-A", "mcp:inspect_visa_trusted_agent_protocol"]
timestamp: 2026-07-14
generated: { by: "ainumbers/generate-okf", at: "2026-07-14" }
status: stable
sources:
  - resource: https://ainumbers.co/chaingraph/graph/nodes/art-23-visa-trusted-agent-protocol-inspector.json
    title: "chaingraph.json shard entry"
  - resource: https://ainumbers.co/chaingraph/art-23-visa-trusted-agent-protocol-inspector.html
    title: "public tool page"
---

# Visa Trusted Agent Protocol (TAP) Signature Inspector

> Exports a decision via MCP `inspect_visa_trusted_agent_protocol` — mandate type `compliance_control`.

**Context:** Visa TAP launched; RFC 9421 stable

## Inputs

Typed `inputSchema` — see [tool page](https://ainumbers.co/chaingraph/art-23-visa-trusted-agent-protocol-inspector.html).

## Outputs

A hash-anchored OpenChainGraph artifact (decision, not context).

## Chains

**Consumes:** [Google AP2 Mandate Builder](./art-16-google-ap2-mandate-builder.md), [Agentic Payments Protocol Comparator](./art-22-agentic-payments-protocol-comparator.md)

**Feeds:** [MCP Developer Readiness Scorecard](./art-18-mcp-developer-readiness-scorecard.md), [Mastercard Agentic Token Scope Builder](./art-24-mastercard-agentic-token-builder.md), [AP2 Prompt Template Generator](./ptg-01-ap2-prompt-template-generator.md)

## Attested computation

[executor + attester binding](../computations/art-23-visa-trusted-agent-protocol-inspector.md) — §10.2.