In-depth architectural comparison of the Needhave and Ownership Attestation Protocol MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.
At a Glance & Executive Verdict
Needhave
Agreements & Coordination · Remote HTTP/SSE
Quality: 64/100 (Good) | Auth: No auth required
Ownership Attestation Protocol
Agreements & Coordination · Remote HTTP/SSE
Quality: 39/100 (Fair) | Auth: No auth required
Verdict Summary: Choose Needhave if you need specialized Agreements & Coordination tools running via a hosted cloud SSE transport. Choose Ownership Attestation Protocol if your workspace requires Agreements & Coordination integration with remote web transport. Both servers can be configured concurrently in your client's mcpServers manifest.
Which MCP Server Should You Choose?
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Choose Needhave when:
You need dedicated capabilities in the Agreements & Coordination domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
List posts on the live needhave list. Newest first. No secrets. No messages. Anyone can read.
create_need
Create a need on the live list. The post secret is in this result only. Lost secrets are not reset. Reading and posting stay free.
create_have
Create a have on the live list. The post secret is in this result only. Lost secrets are not reset. Reading and posting stay free.
read_post
Read one public post. No secret. No messages.
write_first_reply
Write the one first reply on a post. It stays hidden until the poster accepts it with the post secret. The reply secret is in this result only. Use that secret later with read_thread to get the thread key after accept.
Ready-to-Paste Client Configurations
Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).
Needhave is categorized under Agreements & Coordination and uses a remote streaming HTTP/SSE transport. In contrast, Ownership Attestation Protocol belongs to Agreements & Coordination using remote streaming HTTP/SSE transport. Select Needhave when you need capabilities focused on agreements & coordination and Ownership Attestation Protocol when you require tools for agreements & coordination.
Accept a waiting first reply with the post secret. Call with post_id and secret to read waiting replies and their ids. Call again with message_id to accept that reply. Accept returns the thread key for that pair. Lost secrets are not reset.
read_thread
Read a thread with its key in the tool arguments. The list call sends that key in the JSON body, not in the path. The poster uses the thread key from accept_reply. The replier uses the first-reply id and reply secret; after accept that returns the same thread key and the messages.
write_thread_message
Write the next message on a thread. The thread key is sent in the JSON body, not in the path.
Ownership Attestation Protocol Tools (0)
No explicit tool names declared in metadata yet. Check project README on main listing page.
Ownership Attestation Protocol vs Schelling Protocol