Question 1

What is the Claude skills marketplace?

Accepted Answer

The Claude skills marketplace is Anthropic's directory of installable capabilities that Claude can call on behalf of a user. A skill is a packaged set of instructions, tools, and resources — typically delivered through an MCP server — that extends Claude's ability to take action against a vendor's product. When a user asks Claude to file a Linear ticket, run a Stripe refund, or update a Notion page, Claude checks the user's installed skills and routes the request to the matching vendor. The marketplace surfaces these skills through a directory inside Claude.ai, browsable by category, popularity, and verification status. As of May 2026, Anthropic has confirmed roughly 4,200 published skills, with Stripe, Linear, Notion, Slack, GitHub, and Vercel among the highest-install verified entries. The marketplace is now the primary discovery surface for any B2B SaaS tool a Claude user might plug into their workflow.

Question 2

How is the Claude skills marketplace different from the OpenAI GPT Store?

Accepted Answer

The two marketplaces target different layers of the stack and reward different vendor behaviors. The OpenAI GPT Store, launched in January 2024, surfaces custom GPTs — pre-prompted versions of ChatGPT tied to a creator account, often with an action layer that calls an external API. The Claude skills marketplace is structured around skills installed into a persistent Claude account, with execution typically running on the vendor's own infrastructure via the Model Context Protocol. The practical implications are significant. GPTs win on creator economy and consumer-style discovery; Claude skills win on enterprise-grade auth, action reliability, and integration with developer workflows. Install volume reflects the difference. Public OpenAI numbers from late 2024 suggested the GPT Store passed three million custom GPTs but with heavy long-tail concentration. Anthropic's smaller skill catalog skews toward verified vendor-published entries with much higher per-skill install rates. For B2B SaaS, Claude skills produce more durable distribution; for consumer hobbyist content, GPTs still dominate.

Question 3

What does a Claude skill manifest look like and why does it matter for AEO?

Accepted Answer

A Claude skill manifest is the structured metadata file a vendor publishes to describe the skill in the marketplace. It includes the skill name, a short description, a longer capability summary, the supported tool list, sample prompts, the vendor's verification status, and tagged categories. Anthropic indexes the manifest fields directly into both the in-product Claude search and the public marketplace browse experience. Manifest SEO matters because the manifest is what Claude itself uses to decide whether to invoke your skill when a user issues an ambiguous request. A skill described as a project management tool will not be routed to when the user asks about engineering issue tracking unless the manifest explicitly surfaces the right vocabulary. Vendors who treat the manifest as production marketing copy — with specific job-to-be-done language, accurate tool descriptions, and curated sample prompts — get more invocations than vendors who paste a corporate boilerplate description and walk away.

Question 4

Should my B2B SaaS company publish a Claude skill in 2026?

Accepted Answer

If your product has any API that a knowledge worker would reasonably want to call from inside an AI assistant, the answer is yes, and the deadline for first-mover advantage is roughly Q3 2026. Anthropic's verification pipeline is still small enough that vendor-published skills with substantive integrations get featured placement in category pages, which compounds install velocity. Skills published after the marketplace matures will face the same long-tail discovery problem that App Store and Chrome Web Store entries faced after their first 18 months. The cost of building a basic skill is low — most companies with an existing MCP server can ship a marketplace listing in two to four weeks of engineering work. The cost of not shipping is forfeiting the discovery surface where 38% of paying Claude users now report finding new B2B tools. For SaaS categories already represented by an incumbent skill, the right move is to ship a differentiated entry quickly rather than waiting for a perfect launch.

Question 5

How does the Claude skills marketplace interact with the broader MCP server economy?

Accepted Answer

The Model Context Protocol, originally open-sourced by Anthropic in November 2024, is the connective tissue beneath both the Claude skills marketplace and the broader ecosystem of AI tools that need to call external services. A Claude skill is typically backed by an MCP server the vendor operates; the marketplace is the discovery layer Anthropic owns and curates. The skills marketplace did not replace the open MCP ecosystem — it sits on top of it. Vendors who publish an MCP server can list it in multiple registries, including the Anthropic marketplace, the public mcp.so directory, the OpenAI Operator integrations registry, and emerging registries from Cursor, Zed, and the Cline VS Code extension. The strategic implication for SaaS vendors is that the MCP server should be built once and listed everywhere, with the Anthropic marketplace listing optimized as the highest-volume discovery surface. The vendors winning in 2026 are running this multi-registry distribution playbook in parallel.