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Spoolis MCP Server

answering

Spoolis is answering right now. Last checked 13 min ago. 31 installs a week from npm. It exposes 32 tools.

Verify AI work against criteria and get signed receipts. From Spoolis, guarantees for AI work.

Installs per day peak 154 · avg 11 · -30% w/w
a month agotoday
Uptime history 55 days of history · worst day 0%
55 days agonow
13.2%
Uptime 24h
12 of 91 checks
32
Tools
read from the server
867 ms
Response time
average over 24h
31
Installs / week
npm and PyPI

What changed 44

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

18 Sep 14 tools appeared add_source, decide_review, get_dispute and 11 more
18 Sep 2 tools changed the parameters they ask for4 times that day create_spool, run_sandbox_scenario
18 Sep a tool description was rewritten3 times that day run_sandbox_scenario
15 Sep a tool description was rewritten get_receipt_status
12 Sep a tool description was rewritten get_spool
12 Sep a tool appeared get_receipt_status
10 Sep 2 tool descriptions were rewritten verify_result, verify_spool
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
and 17 more, back to 3 September 2026

Spoolis does not always answer

Over the last week it answered 4.0% 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 13 min ago.

run in your terminal
claude mcp add mcp --transport http https://spoolis.com/api/mcp
Settings → Connectors → Add custom connector, then paste this address
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
{
  "servers": {
    "mcp": {
      "type": "http",
      "url": "https://spoolis.com/api/mcp"
    }
  }
}

Available tools 32

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 party named in who_may_dispute can supersede an issued receipt through POST /api/v1/receipts/{receipt_id}/supersede. There is no review queue 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.
open
open_discrepancy
Open a discrepancy for a Spool (the agreement object). Use when expected and observed figures do not reconcile; this records the difference and does not assume either source is wrong. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
open_dispute
Open a dispute for a Spool (the agreement object). Use inside its declared window; this records counter-evidence and marks policy-defined value as not currently final or payable. It does not restrict money. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
verify
verify_result
Get a signed, durable, portable Outcome Receipt: a verdict artifact, per unit for unitized work, another system can fetch and independently verify. Spoolis makes it by verifying returned work against explicit acceptance criteria. 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 versioned acceptance policy. 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
Issue a signed, durable, portable Outcome Receipt from this Spool, the versioned acceptance policy. The receipt is a verdict artifact, per unit for unitized work, another system can fetch and independently verify. Spoolis makes it by evaluating submitted evidence against the acceptance criteria and determining 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.
decide
decide_review
Decide a pending review for a Spool (the agreement object). Use after inspecting its evidence; this records confirmation or creates a dispute and does not settle payment. 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.
discrepancies
list_discrepancies
Read discrepancies for a Spool (the agreement object). Use for inspecting differences; it has no side effects. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
dispute
get_dispute
Read a dispute for a Spool (the agreement object). Use to inspect claimed, accepted, disputed, final, and payable figures plus resolution state; it has no side effects. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
facts
list_facts
Read typed facts for a Spool (the agreement object). Use to inspect observed evidence; it has no side effects. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
matches
list_matches
Read matches for a Spool (the agreement object). Use to inspect outcomes and explanations; it has no side effects. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
matching
run_matching
Run matching for a Spool (the agreement object). Use after claims and facts exist; this records explainable results and discrepancies. 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.
receipt
get_receipt_status
Check whether an Outcome Receipt is still current or has been superseded, before acting on it. Returns state (current, superseded, unknown) and status (active, corrected, revoked). Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
request
request_review
Route receipt units from a Spool (the agreement object) or its whole outcome to a named reviewer. Use when a human decision is required; this creates a review request and hosted link but does not decide it. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
resolve
resolve_discrepancy
Resolve a discrepancy for a Spool (the agreement object). Use after authority determines the outcome; this records the resolution and does not initiate settlement. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
review
get_review
Read the review request for a Spool (the agreement object). Use to poll its state; it has no side effects. 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, external_judge_two_consumers, qualified_meetings, production_migration, review_and_dispute, and sources_and_matching. This persists only run parameters and aggregate results; modeled economics are labeled modeled. commercial_state opens and resolves a blocking discrepancy, proving the Outcome moves from uncertain back to accepted. Works in the no-key sandbox.
source
add_source
Add a source connection for a Spool (the agreement object). Use before ingestion; this creates a connection and does not ingest evidence. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.
sources
list_sources
Read source connections for a Spool (the agreement object). Use for source health inspection; it has no side effects. Production only: set SPOOLIS_API_KEY; not available 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.
sync
sync_source
Sync a source for a Spool (the agreement object). Use after configuration; this creates an idempotent checkpointed job. Production only: set SPOOLIS_API_KEY; not available in the no-key sandbox.

Endpoints

URLTransportStateLatencyChecked
https://spoolis.com/api/mcp streamable-http answering 813 ms 13 min ago

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Spoolis — questions

Answers built from our own checks of this server.

What can Spoolis do?
It exposes 32 tools, read directly from the server on our last check. Among them: abandon_spool, accept_spool, add_source, amend_spool, cancel_spool, commit_payment and 26 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, verify and open. 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 12 of 91 checks got a reply (13.2%), average response time 867 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 in the form 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 32 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 867 ms on average, which is faster than 9% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. 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 31 times in the last week. Week over week that is -30%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.