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Comerica

Comerica Incorporated is a Texas-headquartered super-regional financial services holding company providing retail, small-business, commercial, and wealth-management banking across the United States, with market concentrations in Texas, California, Michigan, Arizona, and Florida. As of July 2026 Comerica publishes NO first-party developer API portal: developer.comerica.com, api.comerica.com, and related developer subdomains do not resolve, and directory trackers (Open Banking Tracker, API Tracker) list no documented API products, OpenAPI/Swagger specs, SDKs, or Postman collections. Consumer and small-business account data is reached indirectly through US open-finance aggregators (Plaid, MX, Finicity, Akoya) and through Financial Data Exchange (FDX) APIs — the CFPB-recognized standard-setting body for the Section 1033 Personal Financial Data Rights rule — rather than a Comerica-published endpoint. Commercial treasury, cash-positioning, ACH/wire initiation, and reporting are delivered through Comerica's Cash Management and Commercial Information Management platforms under direct customer contract (host-to-host files, portal, and BAI/ISO 20022 feeds), not a public REST API. Note: Fifth Third Bancorp completed its all-stock acquisition of Comerica in February 2026, so Comerica's future digital and API surface is being integrated into Fifth Third's platform.

human only

More than an index entry, but the surface is still mostly links rather than artifacts — the cohort most likely to move a full band from modest, well-targeted work.

Kin Score

API Evangelist profiles Comerica the way a machine reads it — 1 machine-readable artifact, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.

Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Comerica scores 16.1/100 (emerging), with a separate agent-readiness read of 0/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 16.1/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 1.3 / 20
Commercial Clarity 4.2 / 20
Operational Transparency 1.4 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Regulatory · Banking & Open Finance 4.6 / 15
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3

How we profile Comerica

Each block below is one kind of artifact we hold for Comerica. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Comerica Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Every other property we hold for Comerica — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Access & Security 2

Authentication, authorization, and security posture

Operate 1

Status, limits, changes, and where to get help

Commercial 2

Pricing, plans, and the legal terms of use

← All providers · Data indexed from github.com/api-evangelist/comerica · machine-readable index on apis.io