Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Runs on your computer
Hive Flag
Overview
Description from the maker (original English)
Feature flag service for safe rollouts across the Hive agent fleet
PopNx MCP’s three pillars
These three are never merged into one score: opinions, measurements and popularity are different things.
- User voiceiNo reviews yetReviews open together with accounts in a later step
- Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
- UsageiVery new★ –
What you can do with it
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
- Connection: Runs in the cloud
- Transport: Streamable HTTP
- Category: Other
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 1 of 1 passed
- Runs on the maker’s server: what you ask it goes through their server.
- The registry lists no key to fill in.
You need
- Runs in the cloudNothing to install; it connects over the internet
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Works in Claude on the web, desktop and mobile:
- Open Settings → Connectors
- Press Add custom connector
- Paste the address below and press Add
- If it asks you to sign in, sign in with the maker
https://hive-mcp-flag.onrender.com/mcpRun this in your terminal
claude mcp add --transport http hive-flag https://hive-mcp-flag.onrender.com/mcpOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"hive-flag": {
"url": "https://hive-mcp-flag.onrender.com/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Or copy the settings yourself
Paste into .vscode/mcp.json in your project
{
"servers": {
"hive-flag": {
"type": "http",
"url": "https://hive-mcp-flag.onrender.com/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
- Open ChatGPT on the web → Settings → Connectors (Apps)
- Press Create or Add (some plans need Developer mode under Advanced first)
- Paste the address below, give it a name and save
- If it asks you to sign in, sign in with the maker
https://hive-mcp-flag.onrender.com/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
What it can do
We have not read this server’s tool list yet; we check endpoints in rotation.
Basic checksi
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account srotzin, which owns the repo
- … Not checked yet
Still maintained
We have not read this repo from GitHub yet
- … Not checked yet
Has a licence
We have not read this repo from GitHub yet
- … Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
- … Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
- … Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint
Compared with others in Otheri
- More stars than 0% of the other 18498 servers in this category
- Published to the registry more recently than 6% of the other 18498 servers in this category
- Basic checks equal to or better than 100% of the other 18498 servers in this category
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
Common questions
Is Hive Flag safe?
It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
What keys or codes does it need?
The registry does not list a required key, though some servers ask you to sign in on first use.
Does it run on my computer or in the cloud?
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
Is it still maintained?
The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 6 months ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
What can I use instead?
In the same category: Spec Driven Development, Remote Desktop Commander, Readfirst
Alternatives
Servers in the same category from other makers, sorted by stars.
Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Remote Desktop Commander
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Runs in the cloud✓ desktopcommander.app
Readfirst
What to read and check before changing a file: project rules, risks, checks and tests per file.
Runs on your computer
README from the maker
Open the README
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
hive-mcp-flag
Feature flag service for the A2A network — Hive Civilization. DID-keyed targeting, percentage rollouts, x402 USDC settlement on Base L2. MCP 2024-11-05. Inbound only.
Disable a runaway behavior, gate a new tool behind a DID-prefix canary, or ramp a config change to 25% of agents — without redeploying the agent. LaunchDarkly-shaped semantics, agent-native primitives.
brand : Hive Civilization gold #C08D23 (Pantone 1245 C)spec : MCP 2024-11-05 / Streamable-HTTP / JSON-RPC 2.0 wallet: W1 MONROE 0x15184bf50b3d3f52b60434f8942b7d52f2eb436e (Base)
Quick start
git clone https://github.com/srotzin/hive-mcp-flagcd hive-mcp-flag npm install npm start
hive-mcp-flag on :3000
Hosted endpoint: https://hive-mcp-flag.onrender.com/mcp
Tools and pricing
| Tool | USD / call | Notes |
|---|---|---|
flag_eval | $0.0005 | Evaluate a flag for a DID; returns resolved value and matched rule. |
flag_list | free | List flags owned by a DID. |
flag_describe | free | Full flag definition and recent evaluations. |
flag_create | $0.001 | Create a flag with default value and targeting rules. |
flag_update | $0.0005 | Update default value or targeting rules. Owner-only. |
flag_delete | $0.001 | Tombstone a flag. Owner-only. |
All payments are inbound. Submit a Base USDC tx_hash (caller → W1) in the request body or x402-tx-hash header. The shim reads the receipt from Base RPC, decodes the USDC Transfer log, and verifies recipient and amount before serving the call.
Targeting rules
Rules evaluate in declared order. First match wins. If none match, the flag's default_value is returned.
[{ "type": "did_match", "dids": ["did:hive:0xabc"], "value": true }, { "type": "did_prefix", "prefix": "did:hive:", "value": true }, { "type": "rollout", "percent": 25, "value": true } ]
rollout uses SHA256(did + flag_key) mod 100, so the same (did, flag_key) pair always falls in the same bucket — sticky variant assignment with no extra storage.
REST API
POST /v1/flag/eval # body: { flag_key, evaluating_did, tx_hash }GET /v1/flag/list?owner_did=... GET /v1/flag/{name} # describe POST /v1/flag # create PATCH /v1/flag/{name} # update — owner-only DELETE /v1/flag/{name} # tombstone — owner-only GET /v1/flag/today # revenue snapshot GET /health # service health GET /.well-known/mcp.json # MCP discovery POST /mcp # JSON-RPC 2.0
MCP example
{"jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "flag_eval", "arguments": { "flag_key": "new_routing_v2", "evaluating_did": "did:hive:0xabc", "tx_hash": "0xBASE_TX_PAYING_$0.0005_USDC_TO_W1" } } }
Real rails
| Surface | Library | Behavior |
|---|---|---|
| Persistence | better-sqlite3 | SQLite at /tmp/flag.db, WAL mode, transactional create/update. |
| Signature verification | ethers.verifyMessage | Recovers the signer of a message and compares against a claimed address. |
| Payment verification | ethers.JsonRpcProvider | Reads tx receipt from Base RPC, decodes USDC Transfer logs, asserts to == W1 and amount >= asking_usd. |
Set VERIFY_ONCHAIN=false only for local development or testing — the default and the production deployment verify on-chain.
Environment
| Var | Default | Purpose |
|---|---|---|
PORT | 3000 | HTTP port |
ENABLE | true | Master switch (false to brown-out) |
WALLET_ADDRESS | W1 | Base L2 receiver |
BASE_RPC_URL | https://mainnet.base.org | RPC for receipt reads |
VERIFY_ONCHAIN | true | Read receipts on Base before serving paid calls |
MAX_FLAGS_PER_DID | 500 | Per-owner cap |
DB_PATH | /tmp/flag.db | SQLite file |
Caps
MAX_FLAGS_PER_DID = 500- Max targeting rules per flag: 50
- Request body limit: 256 KB
Out of scope (v1.1+)
Flag prerequisites (B depends on A), auto-ramping rollouts, push notifications and change webhooks, multi-environment namespaces, dashboard UI.
Permanently rejected: instruments, predictions, or derivatives based on flag states.
Hive Civilization · MIT · github.com/srotzin/hive-mcp-flag
Hive Civilization Directory
Part of the Hive Civilization — agent-native financial infrastructure.
- Endpoint Directory: https://thehiveryiq.com
- Live Leaderboard: https://hive-a2amev.onrender.com/leaderboard
- Revenue Dashboard: https://hivemine-dashboard.onrender.com
- Other MCP Servers: https://github.com/srotzin?tab=repositories&q=hive-mcp
Brand: #C08D23