Countersignatory
REMOTE · COUNTERSIGNATORY.COM · SCANNED SEP 24
Live spot prices for verified human judgment, sign-off and notarisation.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security74
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability69
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 588 tokens (~196/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management60
- Stability observed for 18 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage97
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 92% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the Countersignatory MCP server?
Countersignatory is a hosted endpoint at https://countersignatory.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · countersignatory.com
claude mcp add --transport http com-countersignatory-mcp 'https://countersignatory.com/mcp'
{
"mcpServers": {
"com-countersignatory-mcp": {
"url": "https://countersignatory.com/mcp"
}
}
} {
"servers": {
"com-countersignatory-mcp": {
"type": "http",
"url": "https://countersignatory.com/mcp"
}
}
} [mcp_servers.com-countersignatory-mcp] url = "https://countersignatory.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-countersignatory-mcp": {
"type": "remote",
"url": "https://countersignatory.com/mcp",
"enabled": true
}
}
} openclaw mcp add com-countersignatory-mcp --url 'https://countersignatory.com/mcp' --transport streamable-http
mcp_servers:
com-countersignatory-mcp:
url: "https://countersignatory.com/mcp" {
"McpServers": {
"com-countersignatory-mcp": {
"Transport": "http",
"Url": "https://countersignatory.com/mcp"
}
}
} assistant mcp add com-countersignatory-mcp -t streamable-http -u 'https://countersignatory.com/mcp'
{
"mcpServers": {
"com-countersignatory-mcp": {
"type": "http",
"url": "https://countersignatory.com/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 24 Sept 26 0
- Schema quality: 176 → 196 ▼ functional
- “countersignatory_quote” added an optional parameter “criteria” cosmetic
- 22 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 50 to 53. That category is still filling its 30-day observation window: 15 days of observed history at the previous scan, 16 at this one. The score rises as the window fills, whether or not the server changes.
- 20 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.
- 18 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.
- 16 Sept 26 +1
- Tool “countersignatory_spot_index” rewrote its description, which is the text the model reads security
- Schema quality: good → excellent functional
- 14 Sept 26 0
- Tool “countersignatory_register_interest” rewrote its description, which is the text the model reads security
- Schema quality: 134 → 167 ▼ functional
- “countersignatory_quote” added an optional parameter “market” cosmetic
- “countersignatory_register_interest” added an optional parameter “market” cosmetic
- “countersignatory_register_interest” reworded the description of “quote_id” cosmetic
- “countersignatory_register_interest” made “quote_id” optional cosmetic
- 12 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 10 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 24 Sept 2026 · Probed https://countersignatory.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=countersignatory.com | CN=WE1,O=Google Trust Services,C=US | 17 Aug 2026 | 15 Nov 2026 | ECDSA 256 | ECDSA-SHA256 | 77410e3120e3ffb90e8e2b76ec38b4d4 |
| SANs: countersignatory.com, *.countersignatory.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of countersignatory.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| countersignatory.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://countersignatory.com/mcp | Verified | 200 | |
| http (plaintext) | http://countersignatory.com/mcp | HTTPS enforced | 301 | https://countersignatory.com/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
countersignatory_quote Price a task ~331
Get the current spot price to have a verified human check, agree on, sign off or notarise something. Use when an agent needs human judgment, accountability or a signature, and needs to know the cost and time before committing. Returns an indicative price, a band, what would clear at a lower bid, and the implied rate per human minute.
| Name | Type | Req | Description |
|---|---|---|---|
| consensus_n | integer | – | Odd quorum size for the consensus tier. |
| criteria | array | – | Required for a market priced per criterion, currently countersign.accessibility_statement, and rejected for any other. The criteria to examine, each priced from its published effort class and summed.… |
| jurisdiction | string | – | Two-letter ISO 3166-1 alpha-2 country code, for example GB or US. UK is accepted as an alias for GB. |
| market | string | – | The market id from the spot index, e.g. countersign.accessibility_statement. Pass the id verbatim. |
| max_price | number | – | Your maximum bid in USD. The response says whether it clears. |
| sla_seconds | integer | yes | Deadline in seconds. 300 is five minutes. |
| task_type | string | yes | – |
| tier | string | – | check: one screened human, a score at stake. consensus: N humans, majority resolves. countersign: a named, register-verified professional attaches their name. seal: a regulated act by a licensed part… |
| unassisted | boolean | – | Require unassisted human perception. Carries a premium. |
No output schema declared.
No examples provided.
countersignatory_register_interest Register interest ~174
Record that you would buy. Send the quote_id from a countersignatory_quote response to say the quoted price would clear your use case. For a market on the spot index whose state is opening, which cannot be quoted yet, send its market id instead. This is the demand signal that decides which markets open first.
| Name | Type | Req | Description |
|---|---|---|---|
| market | string | – | The market id from the spot index, for a market whose state is opening. Pass the id verbatim. Send this or quote_id, not both. |
| note | string | – | What you would use it for, or what would have to change. |
| quote_id | string | – | The quote_id from a countersignatory_quote response. Send this or market, not both. |
| would_pay | boolean | – | Whether you would buy at the quoted price. |
No output schema declared.
No examples provided.
countersignatory_spot_index Spot Index ~83
The public Countersignatory Spot Index: the going rate for verified human judgment by market, with the urgency and off-hours multipliers, the published wage floor, and the derivation of every seeded number. Use it for the reference rate table across all markets; use countersignatory_quote when you have a specific task and need a price for it.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
What is the Countersignatory MCP server?
Countersignatory is an MCP server listed in the public MCP registry as com.countersignatory/mcp. Live spot prices for verified human judgment, sign-off and notarisation. This page covers its hosted endpoint (https://countersignatory.com/mcp).
Is the Countersignatory MCP server safe to use?
Countersignatory scores 78 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Countersignatory MCP server expose?
Countersignatory exposes 3 tools: countersignatory_quote, countersignatory_register_interest, countersignatory_spot_index. Their descriptions and schemas cost roughly 588 tokens of context every time the server is loaded.
Does the Countersignatory MCP server require authentication?
No. We connected to Countersignatory without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Countersignatory MCP server still maintained?
Countersignatory is still listed as active in the MCP registry. We last reached this channel on 24 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.