# Comerica

**Canonical:** https://apis.io/providers/comerica/  
**Website:** https://www.comerica.com  
**APIs profiled:** 0

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.

## Kin Score — 6.5 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 6.5).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 3.6 |
| Commercial Clarity | 10.5 |
| Access Clarity | 10.5 |

Regulatory layer — **Banking & Open Finance**: 12.7 (matched via tags).

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

No public API — aggregator/FDX access only — onboarding: unknown, pricing: unknown, trial: no (confidence: high).

## Security (1)

- **Comerica Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Banking, Commercial Banking, Financial-Services, Retail Banking, Wealth Management, Treasury Management, Open Banking, Super-Regional Bank, United States, Fortune 1000

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/comerica/). Scores are computed from the provider's own public artifacts under a published rubric.