online.projectstate由 projectstate.online 發布官方發布者v0.3.0更新於 Oct 28, 2026
Per-project memory for AI agents: decisions, attempts, tasks, ranked recall. Paid per call via x402.
為 AI 代理提供專案層級的記憶：儲存決策、嘗試與任務，並依相關度在字數預算內召回；透過 x402 按次以 USDC 付費。
Web executable，透過 Streamable HTTP。 遠端服務在工作區中設定後即可從網頁執行環境執行。
把這段提示詞貼上到 Claude Code、Codex、Cursor 等代理程式，或 SourceWeft 對話中。代理程式會讀取該伺服器的安裝指南，先向你展示發布者、端點和登入方式，經你同意後再把它新增到你的客戶端。金鑰不會寫進任何命令。
閱讀 https://sourceweft.com/mcp/online.projectstate%2Fprojectstate/install.md，並按其中說明把這個 MCP 伺服器接入我的客戶端。修改任何設定之前，先告訴我它的發布者、端點和登入方式，等我確認。不要把 API 金鑰寫進命令或我會提交的檔案；問我金鑰應從哪裡取得。把它新增到你客戶端的 mcpServers 設定中。
{
"mcpServers": {
"projectstate": {
"type": "http",
"url": "https://projectstate.online/mcp"
}
}
}Persistent project memory for AI agents, paid per call in USDC over x402. No account, no API key.
https://projectstate.online/mcp — an MCP server (Streamable HTTP) that remembers, per project, what was decided, what was tried and failed, and what is still open, and hands an agent back the three facts it needs instead of the whole history.
Every agent already has "memory". What it does not have is project state that survives across tools and sessions: Claude Code, Cursor, a CI agent and a script all working on the same repo, sharing one ranked, compact record of decisions and dead ends. That is what this is. Retrieval is the point: recall returns at most a few lines inside a character budget, ranked so superseded decisions sink and active ones float.
Failed calls are free. Identical retries (or any call with the same idempotency_key) are never billed twice. Prices are published per tool in tools/list under _meta.priceUsd.
The tool to call before starting something non-trivial:
Three targeted searches in one call, returning only what would change the plan. A clean plan answers "Nothing on record matches this plan" so the agent can proceed without a second lookup.
isError: true with an x402 v2 PaymentRequired in structuredContent (scheme exact, USDC on Base, the amount, the pay-to address)._meta["x402/payment"]._meta["x402/payment-response"] and a credit token in _meta["projectstate/x402-credit"].Authorization: Bearer xc_…. Unused credit stays on your wallet address.Works with any x402-capable client: x402-mcp (withPayment()) for the Vercel AI SDK, the x402 Python package, or the 30-line handshake in scripts/x402_agent_demo.py.
Python 3.12, the official MCP Python SDK (v2), SQLite + FTS5 (bm25, no vectors), the official x402 package against the Coinbase facilitator on Base mainnet. One process, one SQLite file, an admin dashboard with per-tool latency, error messages, a full audit ledger and a retrieval-quality meter (zero-hit and re-query rates) that says when keyword search stops being enough.
Docs: https://projectstate.online/docs · Registry: online.projectstate/projectstate · License: MIT
deploy/install.sh sets up systemd, nginx, fail2ban, hourly SQLite backups and unattended upgrades on a small Ubuntu VPS; deploy/env.example lists every setting; deploy/x402_live_setup.sh switches the x402 rail to Base mainnet with Coinbase CDP keys. pytest tests/ runs 33 tests including a mock x402 facilitator that verifies real EIP-712 signatures.
來源：README.md，提交 a8db121
Open project
Open (or create) a project and get a compact brief: status line, open tasks, latest active decisions and failed attempts. Call this first in a session. Omit `project` to list your projects. `project` is a slug like 'my-app' (lowercase, digits, '-', '_' or '.').
nameprojectdescriptionProject status
Get the project's one-line status, open tasks and last change. Pass `set_status` to overwrite the status line (e.g. 'v0.3 shipped; next: migrate auth to OAuth'). Cheap; use it for handoff notes between sessions.
project必填set_statusRemember
Store one fact about the project. `kind` is one of: decision (what was chosen and why), attempt (something tried; status 'worked'|'failed'|'partial'), task (status 'open'|'done'|'dropped'), note (anything else). `title` is one line; put details, reasons and error messages in `body`. `files` lists related paths. `supersedes` marks an older decision/task as replaced by this one. Identical content is stored once, so retries are safe; `idempotency_key` additionally guarantees a retry is not billed twice.
bodykind必填tagsfilestitle必填statusproject必填supersedesidempotency_keyRecall
Search the project's memory with keywords and get the few most relevant entries (ranked, active entries first, superseded ones last), trimmed to `max_chars`. Use 2-5 specific keywords (e.g. 'auth token expiry'). Filters: kind (decision|attempt|task|note), status, tags, files. Omit `query` for the most recent entries. Follow up with update(project, id, ...) or remember(...).
kindtagsfileslimitquerystatusproject必填max_charsPlan check
Before you start something non-trivial, say what you are about to do and get back only what would change your mind: attempts that already failed at this, decisions that are still in force and constrain it, and open tasks that overlap. `intent` is one line in plain words, e.g. 'switch the cache to Redis' or 'rewrite the auth middleware to use refresh tokens'. Pass `files` if you know which paths you will touch; entries about those files are included even when the wording differs. Cheaper than repeating work that already failed once.
fileslimitintent必填project必填max_charsUpdate entry
Change an existing entry by id: set `status` (task open|done|dropped, attempt worked|failed|partial, decision active|superseded|reverted, note active|archived), replace `title`/`body`, `append` a line to the body (e.g. an outcome), replace `tags`/`files`, or `delete` it.
id必填bodytagsfilestitleappenddeletestatusproject必填已滿足適用檢查項的 100%
該評分衡量此收錄條目的完整程度，依據註冊中心條目、端點與公開來源計算得出。它不是對伺服器本身的評價，也不表示伺服器安全或目前可用：可連通性是帶日期的檢查結果，評分也不包含安裝量或使用者評價。
plan_check(project="my-app", intent="switch the session cache to Redis", files=["src/cache.py"])
Plan check for 'my-app': 'switch the session cache to Redis'Prior failures (1): #8 attempt/failed (2026-09-12): Tried Redis for the session cache — connection pool exhausted under loadActive decisions that constrain this (1): #9 decision/active (2026-09-12): Cache with SQLite instead of Redis — one less service to runOpen tasks that overlap (1): #10 task/open (2026-09-12): Benchmark the cache optionsfrom eth_account import Accountfrom mcp import Clientfrom x402 import x402Clientfrom x402.mechanisms.evm.exact import register_exact_evm_clientfrom x402.mechanisms.evm.signers import EthAccountSignerfrom x402.schemas import PaymentRequired
x = x402Client(); register_exact_evm_client(x, EthAccountSigner(Account.from_key(KEY)))async with Client("https://projectstate.online/mcp") as mcp: r = await mcp.call_tool("project_open", {"project": "my-app"}) # -> PaymentRequired pay = (await x.create_payment_payload(PaymentRequired(**r.structured_content))).model_dump(by_alias=True, exclude_none=True) r = await mcp.call_tool("project_open", {"project": "my-app"}, meta={"x402/payment": pay}) token = r.meta["projectstate/x402-credit"] # reuse on later calls