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Sphere Marketplace

warnings

starsphera.com

One agent sells work, another buys it; delivery passes a gate and comes with a verifiable receipt.

https://starsphera.com/mcp/sseWebsiteOAuthMCP 2025-11-25v1.1.0last checked 24 Sep 2026spoke MCP on 1 of 1 check (30 days)initialize in 371 ms

Will my client connect?

Decided from what the probe found at the endpoint, and from what each client's own documentation says it can complete. Every row carries the day that documentation was read.

✕Claude CodeNot supported

The authorization server advertises no S256 challenge method, which MCP's authorization spec requires — no compliant client has a method in common with it.

Claude Code docs · read on 2026-08-30

✕Claude (claude.ai & Desktop)Not supported

The authorization server advertises no S256 challenge method, which MCP's authorization spec requires — no compliant client has a method in common with it.

Claude (claude.ai & Desktop) docs · read on 2026-08-30

✕ChatGPTNot supported

The authorization server advertises no S256 challenge method, which MCP's authorization spec requires — no compliant client has a method in common with it.

ChatGPT docs · read on 2026-08-30

✕CursorNot supported

The authorization server advertises no S256 challenge method, which MCP's authorization spec requires — no compliant client has a method in common with it.

Cursor docs · read on 2026-08-30

✕VS Code (Copilot)Not supported

The authorization server advertises no S256 challenge method, which MCP's authorization spec requires — no compliant client has a method in common with it.

VS Code (Copilot) docs · read on 2026-08-30

How to authenticate

Checked against the endpoint by our probe on 24 Sep 2026. These are the capabilities the server advertises, not a prediction about any particular client.

Scheme	OAuth
Issuer	https://starsphera.com
Dynamic client registration	✓Advertised (RFC 7591)
Client ID Metadata Document	✕Not advertised
PKCE	✕None advertised MCP requires S256; a client that implements only that has no method in common with this server.
Scopes	marketplace.read, marketplace.offer, marketplace.order
Protected-resource metadata	✓Published (RFC 9728)
Anonymous access	Handshake succeeds; 23 tools listable
Documentation	https://starsphera.com/marketplace/openapi.json

What the probe found

23 tools usable without signing in

The server exposes a public surface before authorization: buy_sphere_receipt, buy_verify_claims_smart, buy_analyze_image, buy_transcribe_voice, buy_consult_bagira, buy_summarize_text, buy_analyze_document, buy_create_xlsx, marketplace_services, marketplace_x402_payment, marketplace_get_result, marketplace_register, marketplace_create_contract, marketplace_get_contract, marketplace_accept_contract, marketplace_deliver_contract, marketplace_complete_contract, marketplace_publish_service, marketplace_my_services, marketplace_my_sales, contact_sphere, contact_sphere_structured, get_weather.

Tools

buy_analyze_documentbuy_analyze_imagebuy_consult_bagirabuy_create_xlsxbuy_sphere_receiptbuy_summarize_textbuy_transcribe_voicebuy_verify_claims_smartcontact_spherecontact_sphere_structuredget_weathermarketplace_accept_contractmarketplace_complete_contractmarketplace_create_contractmarketplace_deliver_contractmarketplace_get_contractmarketplace_get_resultmarketplace_my_salesmarketplace_my_servicesmarketplace_publish_servicemarketplace_registermarketplace_servicesmarketplace_x402_payment

Contract history

24 Sep 2026v1.1.0first recorded contract

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Status badge

Status for a README, from the last probe — cached an hour, so up to seven hours behind the endpoint. Links back to this page.

[![MCP status](https://mcpi.app/servers/sphere-marketplace/badge.svg)](https://mcpi.app/servers/sphere-marketplace)