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Spoolis MCP Server

answering

Spoolis is answering right now. Last checked 6 min ago. 243 installs a week from npm. It exposes 17 tools.

Verify work against acceptance criteria; signed receipts attest what passed and was earned.

Installs per day peak 173 · avg 25 · -46% w/w
a month agotoday
Uptime history 10 days of history · worst day 93%
10 days agonow
91.4%
Uptime 24h
85 of 93 checks
17
Tools
read from the server
451 ms
Response time
average over 24h
243
Installs / week
npm and PyPI

What changed 18

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 3 September 2026. No other catalogue keeps this.

8 Sep 2 tool descriptions were rewritten run_sandbox_scenario, verify_result
8 Sep a tool changed the parameters it asks for run_sandbox_scenario
4 Sep 2 tools changed the parameters they ask for amend_spool, create_spool
3 Sep 5 tools changed the parameters they ask for7 times that day amend_spool, create_spool, run_sandbox_scenario and 2 more
3 Sep 4 tool descriptions were rewritten5 times that day create_spool, run_sandbox_scenario, verify_result and 1 more
3 Sep a tool appeared run_sandbox_scenario
and 3 more, back to 3 September 2026

Spoolis does not always answer

Over the last week it answered 98.8% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.

run in your terminal
claude mcp add mcp --transport http https://spoolis.com/api/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "mcp": {
      "url": "https://spoolis.com/api/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.mcp]
url = "https://spoolis.com/api/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "mcp": {
      "url": "https://spoolis.com/api/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "mcp": {
      "url": "https://spoolis.com/api/mcp"
    }
  }
}

Available tools 17

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

spool
create_spool
Create a production Spool (the agreement object) from structured terms and acceptance criteria. Use when both parties will participate in the agreement lifecycle; do not use for one-call unilateral verification. This persists a proposed agreement and may send the counterparty invite reported in the response handoff block. The type field defaults to the person or business service path, while agent selects the agent settlement rail. Conditions may declare verification_method third_party with an external_judge so verification consumes your own evaluator's bound result instead of Spoolis judging those conditions. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
get_spool
Read a Spool (the agreement object), including hash-covered evidence requirements, dispute policy, and salted unit identity configuration. Use for status checks; it has no side effects. A dispute policy does not imply a dispute workflow or UI. Works in the no-key sandbox.
get_spool_events
Read the canonical audit history for a Spool (the agreement object), including agreement, fulfillment, verification, and settlement events. Use to reconstruct what happened; it has no side effects. Works in the no-key sandbox.
verify
verify_result
Run one-call acceptance using criteria plus evidence plus your chosen judge or checks and get a signed, portable Outcome Receipt that another system can independently check. Use when an agent, vendor, or tool reports work as done and the next action depends on whether the delivery actually met the agreed criteria. This runs in one call using exactly one of inline conditions or a locally registered recipe slug and hash, creating an inspectable unilateral Spool. The maximum amount field is optional for verification-only runs. Omit it when nobody is paying; the earned amount is then zero and the receipt omits committed value. The maximum amount field is required when unit is present because unit math needs the cap. Recipe verification uses the hosted conditions exactly as written and fails closed when the hash differs. The external provider does not accept conditions in Spoolis. For a batch delivery where items can pass, fail, or remain uncertain individually, pass unit (its unit count matching the item count) AND evidence type dataset with exactly one row per delivered item, keeping a field present with a null value when it is missing; that returns distinct per-unit verdicts and earned value only for passing units. Text evidence with unit is batch-only and settles all-or-nothing. For a keyless production alternative, use POST /api/v1/verify/x402. Sandbox dataset evidence is limited to 100 records. Works in the no-key sandbox.
verify_spool
Evaluate submitted evidence against the acceptance criteria in a Spool (the agreement object) and determine what was earned. Use after evidence is attached; this records the verdict and required evidence as present, missing, stale, unavailable, or provenance unsatisfied. Missing required evidence defaults to uncertain. Conditions with verification_method third_party keep your own judge: verification consumes the declared external evaluator's result, bound to this agreement and evidence per its declared proof requirement, instead of Spoolis judging those conditions itself. Unitized receipts may include salted public unit identities. Sandbox dataset evidence is limited to 100 records. Canonical recipe: compile -> verify -> Outcome Receipt -> verifyReceipt -> optional status check -> consumer acts on earned. Works in the no-key sandbox.
abandon
abandon_spool
Abandon an active Spool (the agreement object) before payment is committed. Use when the initiator no longer wants to proceed; this ends the agreement and cannot verify work or settle value. Works in the no-key sandbox.
accept
accept_spool
Confirm the compiled contract by accepting a proposed Spool (the agreement object). Use only after reviewing its terms and acceptance criteria; this records agreement acceptance but does not verify fulfillment or settle payment. Production agent agreements require the current quote digest. Works in the no-key sandbox.
amend
amend_spool
Change acceptance criteria or unit-based earned-value rules on a proposed Spool (the agreement object). Use before acceptance when the draft does not match the intended purchase; this replaces proposal details and does not accept or verify the work. Works in the no-key sandbox.
cancel
cancel_spool
Cancel a Spool (the agreement object) that should not continue. Use only when cancellation is an allowed action; this changes lifecycle state and does not verify fulfillment or settle payment. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
commit
commit_payment
Ask the configured settlement adapter to authorize and, where supported, hold the maximum value for a Spool (the agreement object). Use after terms are accepted when the selected payment path requires commitment; this may create a payment authorization or hold, but does not verify work or determine earned value. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
compile
compile_spool
Turn purchase intent into a proposed DRAFT Spool (the agreement object) with explicit acceptance criteria and earned-value rules. Use before both parties confirm terms; do not use for one-call unilateral result verification. This creates a persisted draft to inspect, then accept_spool confirms it, amend_spool changes conditions or unitization, and abandon_spool discards it. Works in the no-key sandbox.
complete
complete_spool
Read a Spool (the agreement object) whose outcome is already completed. Use for compatibility when a completed result is expected; it has no side effects and does not run verification or settlement. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
counterparty
create_counterparty_invite
Create a 15-minute, single-use grant that lets the other party join a Spool (the agreement object). Use when a counterparty needs scoped access without signing in; do not use as payment authority. This creates a credential that expires after use or 15 minutes. Requires the initiator's full-scope key. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
decline
decline_spool
Decline a proposed Spool (the agreement object). Use when the counterparty rejects its terms; this ends the proposal without accepting it, verifying work, or settling payment. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
propose
propose_spool
Move a draft Spool (the agreement object) into the proposed state so the counterparty can review it. Use after the acceptance criteria are ready; this changes agreement state and does not accept terms or settle payment. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
sandbox
run_sandbox_scenario
Evaluate Spoolis without a key or account: run a seeded synthetic scenario through a real demo Spool (the agreement object), verification, and a signed demo Outcome Receipt. Use to observe which units may continue after verification and inspect seeded truth only after the Outcome exists. Scenarios: data_enrichment runs a synthetic company-enrichment delivery with configurable defect and adversarial rates and returns per-unit verdicts with partial earned value; external_judge_two_consumers walks a signed external evaluator judgment, bound to the agreement and evidence, through one shared Outcome consumed independently by billing and workflow, then shows tamper rejection and missing-unit uncertainty; qualified_meetings runs ten vendor-reported meetings through buyer acceptance criteria and returns seven accepted, two rejected, and one uncertain with a signed receipt; production_migration verifies local delivery checks plus buyer-owned billing telemetry through the external evaluator path, then shows deploy blocking and remediation. This persists only run parameters and aggregate results; modeled economics are labeled modeled. Works in the no-key sandbox.
submit
submit_evidence
Attach fulfillment evidence to an acceptance criterion in a Spool (the agreement object). Use after work is delivered and before verification; this persists evidence but does not decide whether it passes or what was earned. Works in the no-key sandbox.

Endpoints

URLTransportStateLatencyChecked
https://spoolis.com/api/mcp streamable-http answering 649 ms 6 min ago

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Spoolis — questions

Answers built from our own checks of this server.

What can Spoolis do?
It exposes 17 tools, read directly from the server on our last check. Among them: abandon_spool, accept_spool, amend_spool, cancel_spool, commit_payment, compile_spool and 11 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
What is Spoolis mostly used for?
Its tools cluster around spool and verify. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.
Is Spoolis working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 85 of 93 checks got a reply (91.4%), average response time 451 ms. The bar chart above shows every period we have measured.
How do I connect Spoolis?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Spoolis need an API key?
No. Spoolis completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 17 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Spoolis?
It answers our handshake in 451 ms on average, which is faster than 36% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use Spoolis?
The npm package @spoolis/mcp was installed 243 times in the last week. Week over week that is -46%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.