Word Is Bond MCP
A remote MCP server for testing and QA of voice agents. It allows agents to run scripted calls against a hosted sandbox, score captured transcripts, and retrieve detailed metrics including pass/fail verdicts, latency, word-error-rate, and barge-in data. It supports creating test suites, monitoring trends, and managing flow versions for continuous integration of phone-system logic.
Endpoint and access
No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.
https://api.wordis-bond.com/mcpWhat its tools do
16 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.
Checks and signals
Each line is separate evidence, not a trust score.
- Passed Endpoint answered the live check ·
- Availability 1 of 1 checks passed in 30 days
What you can do with it
- Score a captured transcript from a voice agent call
- Run a scripted caller against the hosted sandbox agent
- Get pass-rate and regression trends for test suites
- Test and diff voice assistant flow versions
Source and maintenance
- Maintenance checked
Protocol and capabilities
- Server
- wordis-bond 0.1.0
- MCP protocol negotiated in check
- 2025-06-18
- Tools
- 16 advertised
- Resources
- Not advertised
- Resource templates
- Not advertised
- Prompts
- Not advertised
{
"tools": {
"listChanged": false
}
}Server-provided instructions
Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.
Tools
16 advertised
run_demo
Run the hosted demo voice agent (a dental front desk) end-to-end and get a real, fully-scored result in about a minute — no target of your own needed. Returns the score (0–100), pass/fail verdict, per-turn metrics, the transcript, and a shareable public report URL. Zero carrier cost. Optional inputs override the scenario.
{
"type": "object",
"properties": {
"goal": {
"type": "string",
"description": "What the synthetic caller should try to accomplish."
},
"bargeIn": {
"type": "boolean",
"description": "Inject one caller-initiated barge-in."
},
"persona": {
"type": "object",
"properties": {
"description": {
"type": "string"
}
},
"description": "Override the synthetic caller persona."
},
"expected": {
"type": "array",
"items": {
"type": "string"
},
"description": "Expected agent lines to pin for word-error-rate."
},
"language": {
"type": "string",
"description": "BCP-47 language tag, default \"en\"."
}
},
"additionalProperties": false
}run_test
Run a test against a voice agent you control. Two modes: (1) score a captured transcript offline — pass "transcript" (or "turns") plus "scenarioGoal"; the judge returns a scored run synchronously. (2) run a live synthetic call — pass "targetAgent" and "goal". A live "direct" (SIP/WebRTC) target returns a tokenized media WebSocket URL for your agent-side harness to dial; a "pstn" target places a real carrier call (pro+ plans) to a number you have verified — an unverified destination returns 403 NUMBER_NOT_VERIFIED and no call is placed. Poll get_run / GET /api/tests/{id} for the terminal scored state of a live run.
{
"type": "object",
"properties": {
"goal": {
"type": "string",
"description": "What the synthetic caller should accomplish (live mode)."
},
"turns": {
"type": "array",
"items": {
"type": "object",
"properties": {
"role": {
"enum": [
"agent",
"caller"
],
"type": "string"
},
"text": {
"type": "string"
}
}
},
"description": "Per-turn capture; formatted into a transcript when \"transcript\" is omitted."
},
"record": {
"type": "boolean",
"description": "Record this call to YOUR OWN storage (BYOS, default false). Requires the byosRecording capability (pro/enterprise) and an enabled recording target; the customer-owned pointer comes back in the run’s recording_url. wordis-bond keeps only the pointer, never the audio."
},
"bargeIn": {
"type": "boolean"
},
"persona": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"description": {
"type": "string"
}
},
"description": "The synthetic caller persona (live mode)."
},
"suiteId": {
"type": "string",
"description": "Link this run to a suite (optional)."
},
"expected": {
"type": "array",
"items": {
"type": "string"
}
},
"language": {
"type": "string",
"description": "BCP-47 language tag, default \"en\"."
},
"transport": {
"enum": [
"pstn",
"webrtc"
],
"type": "string",
"description": "Force a transport (live mode)."
},
"assertions": {
"type": "array",
"items": {
"type": "string"
},
"description": "Extra pass/fail checks for the judge."
},
"transcript": {
"type": "string",
"description": "Captured conversation to score (offline mode)."
},
"concurrency": {
"type": "integer",
"maximum": 25,
"minimum": 1,
"description": "Number of parallel live calls."
},
"targetAgent": {
"type": "object",
"required": [
"transport"
],
"properties": {
"peerId": {
"type": "string",
"description": "Hosted-agent id, e.g. \"wb-demo-dental\"."
},
"toNumber": {
"type": "string",
"description": "E.164 number to dial (required for a pstn target). It must be a number this account has proven it controls: verify it first with verify_number_start then verify_number_confirm, otherwise the run is rejected with 403 NUMBER_NOT_VERIFIED and no call is placed."
},
"transport": {
"enum": [
"pstn",
"webrtc",
"direct",
"sip"
],
"type": "string"
}
},
"description": "The voice agent under test — a system you run. transport \"direct\" (SIP/WebRTC) has near-zero cost and works on every plan; \"pstn\" places a real carrier call (pro+ plans) and only to a number you have verified. The hosted demo target is { \"transport\": \"direct\", \"peerId\": \"wb-demo-dental\" }."
},
"scenarioGoal": {
"type": "string",
"description": "What the conversation was meant to accomplish (offline mode)."
},
"recordTargetId": {
"type": "string",
"description": "Record to THIS target (else the most-recent enabled one)."
}
},
"additionalProperties": false
}get_trends
Read account-wide testing trends over a window: pass-rate, average score, and run-to-run regressions per suite, plus overall totals. Use this to spot behaviour drift in the voice agents you test.
{
"type": "object",
"properties": {
"days": {
"type": "integer",
"maximum": 365,
"minimum": 1,
"description": "Look-back window in days (default 90)."
}
},
"additionalProperties": false
}list_suites
List your reusable test suites (each is a set of scenarios/personas pinned to a target voice agent). Returns their ids, names, targets, and schedules — use a suite id with run_test or get_trends.
{
"type": "object",
"properties": {},
"additionalProperties": false
}create_suite
Create a reusable test suite: a named set of scenarios/personas pinned to a target voice agent you run. Optionally give it a schedule ("weekly" | "daily" | "hourly", plan-gated) so it runs automatically and flags drift.
{
"type": "object",
"required": [
"name",
"targetAgent"
],
"properties": {
"name": {
"type": "string"
},
"language": {
"type": "string",
"description": "BCP-47 language tag, default \"en\"."
},
"schedule": {
"type": "string",
"description": "Cadence for scheduled runs, e.g. \"weekly\" | \"daily\" | \"hourly\"."
},
"scenarios": {
"type": "array",
"items": {
"type": "object",
"properties": {
"goal": {
"type": "string"
},
"persona": {
"description": "A string, or { name, description }."
},
"expected": {
"type": "array",
"items": {
"type": "string"
}
}
}
},
"description": "Persona + goal pairs the suite exercises."
},
"targetAgent": {
"type": "object",
"required": [
"transport"
],
"properties": {
"peerId": {
"type": "string",
"description": "Hosted-agent id, e.g. \"wb-demo-dental\"."
},
"toNumber": {
"type": "string",
"description": "E.164 number to dial (required for a pstn target). It must be a number this account has proven it controls: verify it first with verify_number_start then verify_number_confirm, otherwise the run is rejected with 403 NUMBER_NOT_VERIFIED and no call is placed."
},
"transport": {
"enum": [
"pstn",
"webrtc",
"direct",
"sip"
],
"type": "string"
}
},
"description": "The voice agent under test — a system you run. transport \"direct\" (SIP/WebRTC) has near-zero cost and works on every plan; \"pstn\" places a real carrier call (pro+ plans) and only to a number you have verified. The hosted demo target is { \"transport\": \"direct\", \"peerId\": \"wb-demo-dental\" }."
}
},
"additionalProperties": false
}verify_number_start
Prove your account controls a phone number, which it must do before any PSTN test call to it. Word Is Bond places one short call to the number, speaks a 6-digit code twice, and hangs up. Confirm the code within ten minutes with verify_number_confirm. Calling an already-verified number places no call. This is the only action that dials an unverified number and it is tightly capped (3 calls per number and 5 distinct numbers per account, per day).
{
"type": "object",
"required": [
"number"
],
"properties": {
"number": {
"type": "string",
"description": "The number to verify, in E.164 (e.g. \"+15045204977\")."
}
},
"additionalProperties": false
}verify_number_confirm
Finish verifying a phone number by supplying the 6-digit code spoken on the verification call. On success the number becomes a permitted PSTN test destination for your account. The code is single-use, expires after ten minutes, and locks after five incorrect attempts.
{
"type": "object",
"required": [
"number",
"code"
],
"properties": {
"code": {
"type": "string",
"description": "The 6 digits spoken on the call."
},
"label": {
"type": "string",
"description": "Optional label stored alongside the verified number."
},
"number": {
"type": "string",
"description": "The number being verified, in E.164."
}
},
"additionalProperties": false
}list_verified_numbers
List the phone numbers your account has proven it controls. Only these numbers (and Word Is Bond DIDs) may be used as a "pstn" targetAgent.toNumber. Revoke one with DELETE /api/numbers/{id}.
{
"type": "object",
"properties": {},
"additionalProperties": false
}register_recording_target
Register where BYOS call recordings go, so you can pass "record": true to run_test and have that call’s audio teed to YOUR OWN storage. wordis-bond keeps only a pointer (the run’s recording_url), never the audio. "callbackUrl" is a public https endpoint that returns a presigned PUT URL per recording (so wordis-bond never holds your cloud credentials). Pro/enterprise capability, bundled free — you pay your own storage; starter → 402.
{
"type": "object",
"required": [
"name",
"callbackUrl"
],
"properties": {
"name": {
"type": "string",
"description": "A label for this target."
},
"track": {
"enum": [
"inbound",
"outbound",
"both"
],
"type": "string",
"description": "Which side to capture (default inbound = the agent)."
},
"callbackUrl": {
"type": "string",
"description": "Public https endpoint that mints a presigned PUT URL per recording."
}
},
"additionalProperties": false
}import_flow
Import a phone-system flow or voice-agent config from a platform (e.g. Vapi) into the canonical, diffable Flow IR — the first step of putting your phone system under version control. Reports the fields the IR abstracts away. Pass save:true to persist it as a versioned flow. The same IR exports back out, so it doubles as a migration surface between platforms.
{
"type": "object",
"required": [
"platform",
"config"
],
"properties": {
"name": {
"type": "string",
"description": "Name for the saved flow (defaults to the config name)."
},
"save": {
"type": "boolean",
"description": "Persist the imported IR as a new versioned flow."
},
"config": {
"type": "object",
"description": "The platform's native flow/agent object."
},
"platform": {
"enum": [
"vapi"
],
"type": "string",
"description": "The source platform."
}
},
"additionalProperties": false
}diff_flow
Show the structural diff between two versions of a version-controlled flow: which nodes and edges were added, removed, or changed. This is the code review for your phone system — see exactly what a change did before you ship it.
{
"type": "object",
"required": [
"flowId",
"from"
],
"properties": {
"to": {
"type": "integer",
"minimum": 1,
"description": "Target version number (defaults to the current version)."
},
"from": {
"type": "integer",
"minimum": 1,
"description": "Base version number."
},
"flowId": {
"type": "string",
"description": "The flow id."
}
},
"additionalProperties": false
}test_flow
Run the regression gate on a flow now: compile the current version into a synthetic-caller test, run it against the flow's target, and compare the result to the previous version's baseline. A behavior change that regressed (a pass turning into a fail, or a score drop past the threshold) is caught and blocks the change — continuous integration for your phone-system logic.
{
"type": "object",
"required": [
"flowId"
],
"properties": {
"flowId": {
"type": "string",
"description": "The flow id to gate."
}
},
"additionalProperties": false
}list_monitors
List your production monitors and their current health (unknown | healthy | degraded | critical). A monitor watches ONE live production line: you stream it completed calls, and it scores each with the same versioned judge that scores your tests, tracks a rolling baseline, and alerts when quality drifts. Requires a pro or enterprise plan.
{
"type": "object",
"properties": {},
"additionalProperties": false
}create_monitor
Create a production monitor. "scenarioGoal" is what GOOD looks like for this agent — the judge scores every ingested call against it, exactly as a test scenario goal works. Optional "assertions" are plain-English checks the agent must satisfy. Read the ingest secret afterwards from GET /api/monitor/{id}/secret. Requires a pro or enterprise plan.
{
"type": "object",
"required": [
"name",
"scenarioGoal"
],
"properties": {
"name": {
"type": "string",
"description": "Human name, e.g. \"Support line — main agent\"."
},
"rubric": {
"type": "string",
"description": "Extra free-text rubric appended to the judge instructions."
},
"language": {
"type": "string",
"description": "BCP-47 language tag, default \"en\"."
},
"assertions": {
"type": "array",
"items": {
"type": "string"
},
"description": "Plain-English checks the agent must satisfy."
},
"sampleRate": {
"type": "number",
"description": "Fraction 0..1 of ingested calls to score. Default 1 (score every call)."
},
"scenarioGoal": {
"type": "string",
"description": "What the agent is supposed to accomplish on every call."
},
"alertWebhookUrl": {
"type": "string",
"description": "Optional public https URL to receive signed drift alerts."
}
},
"additionalProperties": false
}ingest_call
Send one completed PRODUCTION call to a monitor to be scored. Returns 202 immediately; scoring runs in the background and the monitor health updates. The transcript is scored in flight and never stored — only the scorecard and safe metadata are kept. Pass "externalId" (your own call id) so a re-delivered call scores exactly once.
{
"type": "object",
"required": [
"monitorId",
"transcript"
],
"properties": {
"platform": {
"type": "string",
"description": "Where the call ran, e.g. \"retell\", \"vapi\", \"telnyx\"."
},
"monitorId": {
"type": "string",
"description": "The monitor to ingest into."
},
"externalId": {
"type": "string",
"description": "Your own call id — makes the ingest idempotent."
},
"occurredAt": {
"type": "string",
"description": "ISO-8601 timestamp of when the call happened."
},
"transcript": {
"type": "string",
"description": "Formatted \"AGENT: … / CALLER: …\" transcript of the finished call."
},
"durationSec": {
"type": "number",
"description": "Call duration in seconds."
}
},
"additionalProperties": false
}get_monitor_health
Read a monitor's live rolling health and drift. Health is unknown | healthy | degraded | critical. Drift is isolated by judge version: when our judge changes, the boundary is reported as judgeVersionChanged and NEVER as an agent regression — a score delta across that boundary says nothing about your agent.
{
"type": "object",
"required": [
"monitorId"
],
"properties": {
"monitorId": {
"type": "string",
"description": "The monitor to read."
}
},
"additionalProperties": false
}Prompts
Not advertised
Resources
Not advertised
90-day uptime
A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.
- 2026-11-07: 1 of 1 checks answered
30-day availability
Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.
- Successful checks
- 1 of 1 (100%)
- Average latency
- 1350 ms
- 95th percentile latency
- 1350 ms
Maintenance history
Public check and source-refresh events. Editorial and ownership records remain private.
- · probe · passed · 1350 ms · metadata changed · 16 tool(s)
Connect from your client
Each snippet registers the same endpoint; pick the client you use.
Claude Code
claude mcp add --transport http word-is-bond-mcp https://api.wordis-bond.com/mcpCodex
codex mcp add word-is-bond-mcp --url https://api.wordis-bond.com/mcpCursor
{
"mcpServers": {
"word-is-bond-mcp": {
"url": "https://api.wordis-bond.com/mcp"
}
}
}Cline
{
"mcpServers": {
"word-is-bond-mcp": {
"type": "streamableHttp",
"url": "https://api.wordis-bond.com/mcp",
"disabled": false
}
}
}VS Code
{
"servers": {
"word-is-bond-mcp": {
"type": "http",
"url": "https://api.wordis-bond.com/mcp"
}
}
}Gemini CLI
gemini mcp add --transport http word-is-bond-mcp https://api.wordis-bond.com/mcpClaude Desktop
https://api.wordis-bond.com/mcpWindsurf
{
"mcpServers": {
"word-is-bond-mcp": {
"serverUrl": "https://api.wordis-bond.com/mcp"
}
}
}Let your agent find its tools
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