Onsa
REMOTE · API.ONSA.AI
Find scored B2B leads, read campaign replies and send approved LinkedIn outreach.
Available components
Last scanned (18 hours ago)
Scores higher than 97% of remote servers
Reachable. Last reached 4 Nov 2026.
Category CRM and Sales
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 Security94
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token. View diagnostics → Pass
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
- The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents. View diagnostics → Partial
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability76
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 6595 tokens (~387/item across 17 items; 16 tools + 1 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 Management97
- Stability observed for 29 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage92
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 72% of tool parameters carry a description.Partial
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety50
- Injection-marker check failed: the server instructions contains an instruction to conceal the call from the user, the text "never tell the user", at byte 904 of that field. See how to fix → Fail
- All 3 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.Pass
- An AI judge read all 18 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
- Supports UI / widget rendering.Pass
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.
- 4 Nov 26 −1
- Stability: pass → 0.97 functional
- 15 Oct 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “list_next_steps” rewrote its description, which is the text the model reads security
- Tool “list_pending_outreach” rewrote its description, which is the text the model reads security
- Tool “rewrite_outreach” rewrote its description, which is the text the model reads security
- Tool “send_outreach” rewrote its description, which is the text the model reads security
- 9 Oct 26 +1
- Stability: 0.93 → pass security
- 6 Oct 26 +1
- The server rewrote its instructions, which are the text every model session reads security
- Tool “fetch_leads” rewrote its description, which is the text the model reads security
- Tool “get_campaign_leads” rewrote its description, which is the text the model reads security
- 4 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.
- 30 Sept 26 0
- The server rewrote its instructions, which are the text every model session reads security
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 27 Sept 26 0
- Injection markers: pass → fail ▼ security
- The server rewrote its instructions, which are the text every model session reads security
- New tool “create_shortlist”, which the server declares destructive security
- New tool “revoke_shortlist”, which the server declares destructive security
- Tool “fetch_leads” rewrote its description, which is the text the model reads security
- Tool “find_leads” rewrote its description, which is the text the model reads security
- Tool “list_pending_outreach” rewrote its description, which is the text the model reads security
- Schema quality: 309 → 361 ▼ functional
- Tool coverage: 100% → 72% ▼ functional
- New tool “preview_shortlist” functional
- “continue_campaign” added an optional parameter “taskContext” cosmetic
- “find_leads” added an optional parameter “taskContext” cosmetic
- “fetch_leads” reworded the description of “jobId” cosmetic
- “get_campaign” reworded the description of “campaignId” cosmetic
- “get_campaign_leads” reworded the description of “campaignId” cosmetic
- “get_campaign_leads” reworded the description of “leadIds” cosmetic
- “get_campaign_stats” reworded the description of “campaignId” cosmetic
- “list_pending_outreach” reworded the description of “campaignId” cosmetic
- “rewrite_outreach” reworded the description of “subject” cosmetic
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 4 Nov 2026 · Probed https://api.onsa.ai/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=onsa.ai | CN=WE1,O=Google Trust Services,C=US | 7 Sept 2026 | 6 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | 1506ca5076e735fd0e1101b5235621f3 |
| SANs: onsa.ai, *.onsa.ai | ||||||
| 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 api.onsa.ai. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| ai. | present | 1814, 3799 | 8, 8 | Verified |
| onsa.ai. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication Enforced and verified
The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.
| Result | Enforced and verified |
|---|---|
| Enforced | On tool calls |
| HTTP status | 200 |
WWW-Authenticate challenge Bearer resource_metadata="https://api.onsa.ai/.well-known/oauth-protected-resource"
Bearer resource_metadata="https://api.onsa.ai/.well-known/oauth-protected-resource" | Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | no-referrer |
Protected resource metadata
| Document | https://api.onsa.ai/.well-known/oauth-protected-resource |
|---|---|
| Retrieved | Yes |
| Resource | https://api.onsa.ai/api/mcp |
| Authorisation server | https://api.onsa.ai |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://api.onsa.ai/api/mcp | Verified | 200 | |
| http (plaintext) | http://api.onsa.ai/api/mcp | HTTPS enforced | 302 | https://api.onsa.ai/api/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 →
continue_campaign Steer a campaign ~343
Sends an instruction to the agent inside an existing campaign and returns a jobId to read with fetch_leads. This is the tool that grows or steers a cohort in place - 'find 5 more like these', 'look at Singapore and the Gulf instead of US institutions', 'focus on funds over $5bn AuM'. find_leads always creates a separate campaign with its own ICP, which splits the funnel and leaves the two cohorts incomparable. The agent sees the campaign's existing leads and ICP, so they can be referred to. It cannot answer back through this API, so a question sent here gets no response. New leads count against the prospect allowance, and de-duplication is per workspace, so a request for 5 more can yield fewer when the agent rediscovers people already in the workspace. It does not remove or skip leads: 'drop the bad ones' takes nothing out of the cohort or out of the outreach queue.
| Name | Type | Req | Description |
|---|---|---|---|
| campaignId | string | yes | Campaign to continue, from list_campaigns or fetch_leads |
| message | string | yes | What to tell the agent, in plain language, as the user would say it |
| taskContext | string | – | Optional company, product, or target-market facts explicitly shared by the user and needed for this lead-search or campaign-steering request, beyond what the query/message already states. Maximum 100… |
| Name | Type | Req | Description |
|---|---|---|---|
| billingWarning | – | yes | – |
| campaignId | string | yes | – |
| campaignUrl | string | yes | – |
| jobId | string | yes | – |
No examples provided.
create_shortlist Create a public list link ~286
Publishes a preview_shortlist snapshot as a link. It requires the previewKey that preview_shortlist returned, and confirmPublic: true. The server itself requests no confirmation from the user: confirmPublic: true records the caller's statement that the user reviewed this snapshot and confirmed publishing it. The server rebuilds the snapshot and creates nothing when the selection or the snapshot no longer matches that previewKey: a different campaign, selection or order of leadIds, a different note, an includeRationale value that changes the snapshot, a prospect changed or removed, or the campaign renamed since the preview. The link makes the snapshot viewable by anyone who has it for 30 days unless it is revoked with revoke_shortlist. This does not share the conversation or invite anyone into the workspace. Returns the URL, list id and expiry to the requester; sending it to another person is a separate user action.
| Name | Type | Req | Description |
|---|---|---|---|
| campaignId | string | yes | – |
| confirmPublic | boolean | yes | – |
| includeRationale | boolean | yes | When true, each person in the snapshot carries a fit rating (1–5, or null when none is stored) and a why-matched explanation; when false, the rating is null and the explanation empty. |
| leadIds | array | yes | – |
| note | string | yes | – |
| previewKey | string | yes | – |
| title | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| expiresAt | string | yes | – |
| id | string | yes | – |
| snapshot | object | yes | – |
| url | string | yes | – |
No examples provided.
fetch_leads Fetch search results ~900
Returns the status and any results of a find_leads or continue_campaign job, by jobId. Status values are "pending", "completed" and "stalled", and `leads` can hold a partial list while "pending". For a find_leads job: "pending" while it has no leads, the agent has not answered and it is under about 15 minutes old, and also while it has leads, until a reply carrying leads completes it; "completed" once the agent posts a reply carrying leads while this is the oldest open job on its campaign, usually its final report (`total` can still change afterwards); "stalled" as soon as the agent answers without any leads (a question, or none found), or when no lead has arrived after about 15 minutes - derived on each read, so a lead that lands later turns it back to "pending". For a continue_campaign job: "pending" while `newLeads` is 0 and it is under about 15 minutes old, even after the agent has replied (if that reply confirms a settings-only change, the request is done), and while `newLeads` is above 0, until a reply carrying leads completes it; "completed" once a reply carrying leads arrives on the campaign while this is the oldest open job there (possibly a late reply from an earlier search), or after about 15 minutes with `newLeads` 0 when an agent reply was confirmed; "stalled" after about 15 minutes with `newLeads` 0 when no agent reply was confirmed (agentMessage can still hold one). A reply carrying leads completes only the oldest open job on a campaign, so a newer job stays "pending" meanwhile, even with `newLeads` above 0. A pending search keeps running when the conversation ends, and a later call with the same jobId returns what it found. First leads arrive within 5 minutes in half of searches and within 9 minutes in 9 of 10. More can arrive until the final report, typically about 10 minutes after the start (9 of 10 within 15). Also returns `total` (for a find_leads job, the leads the campaign holds now, skipped and deleted ones excluded; for a continuation, equal…
| Name | Type | Req | Description |
|---|---|---|---|
| jobId | string | yes | The jobId returned by find_leads |
| limit | integer | – | How many leads to return (default 100) |
| Name | Type | Req | Description |
|---|---|---|---|
| agentMessage | – | yes | – |
| campaignId | – | yes | – |
| campaignUrl | string | yes | – |
| jobId | string | yes | – |
| leads | array | yes | – |
| newLeads | – | yes | – |
| progress | object | yes | – |
| refinements | array | – | – |
| returned | integer | yes | – |
| status | string | yes | One of "pending", "completed", "stalled"; more values may be added later. `leads` can hold a partial list while "pending". For a find_leads job: "pending" while it has no leads, the agent has not ans… |
| total | integer | yes | – |
No examples provided.
find_leads Find leads ~358
Starts a live B2B lead search with Onsa's agent, matching real people (with LinkedIn profiles) against the workspace's ICP. Takes a natural-language brief - titles, company type, geography, e.g. 'find 5 fintech founders in NYC'. Returns a jobId immediately, with campaignUrl and a `progress` note. The search itself runs in the background and keeps running after the conversation moves on. First leads arrive within 5 minutes in half of searches and within 9 minutes in 9 of 10. More can arrive until the final report, typically about 10 minutes after the start (9 of 10 within 15). Its status and results are read with fetch_leads, with the same jobId at any later time. Hosts that render MCP Apps show a live card that follows the search and lists leads as they arrive. `limit` is a target the agent aims at rather than a cap, so it often returns more than asked. Every lead it finds counts against the workspace's prospect allowance.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | How many leads to find (default 5) |
| query | string | yes | Natural-language lead brief, e.g. 'find 5 fintech founders in NYC' |
| taskContext | string | – | Optional company, product, or target-market facts explicitly shared by the user and needed for this lead-search or campaign-steering request, beyond what the query/message already states. Maximum 100… |
| Name | Type | Req | Description |
|---|---|---|---|
| campaignId | – | yes | – |
| campaignUrl | string | yes | – |
| jobId | string | yes | – |
| progress | object | yes | – |
No examples provided.
get_campaign Get campaign ~194
Returns one campaign's ICP - the ideal-customer profile the agent derived and scores leads against - plus its outreach template and settings. The ICP comes back exactly as stored, in snake_case: `perfect_lead` and `reachable_market` are one-line summaries, while `company` and `person` hold the rules that actually drive scoring, each an object with `critical` and `preferential` rule lists. `product` and `owner` describe the seller. The two summary strings are not the scoring criteria; `company.critical` and `person.critical` are. No key is guaranteed present. `outreachTemplate` shows how much personalization the messages allow: a template whose only placeholders are [FIRST_NAME] and [COMPANY_NAME] produces near-identical mail-merge copy for every lead.
| Name | Type | Req | Description |
|---|---|---|---|
| campaignId | string | yes | Campaign id, as returned by list_campaigns or fetch_leads |
| Name | Type | Req | Description |
|---|---|---|---|
| campaignUrl | string | yes | – |
| createdAt | – | yes | – |
| icp | – | yes | – |
| id | string | yes | – |
| leadsApprove | boolean | yes | – |
| leadsTotal | integer | yes | – |
| outreachAutoApprove | boolean | yes | – |
| outreachTemplate | – | yes | – |
| tags | array | yes | – |
| title | string | yes | – |
| updatedAt | – | yes | – |
No examples provided.
get_campaign_leads Get campaign leads ~169
Returns the leads of any campaign by campaignId, with the same fields as fetch_leads, including score and scoreExplanation. It covers campaigns not started in this session, which fetch_leads cannot reach because fetch_leads requires a jobId from a find_leads call in the same session. Passing `leadIds` resolves the reply buckets from get_campaign_stats back into named people. A lead carries `signal` only when the search asked for a need signal.
| Name | Type | Req | Description |
|---|---|---|---|
| campaignId | string | yes | Campaign id, as returned by list_campaigns or fetch_leads |
| leadIds | array | – | Optional; when set, only these leads are returned, e.g. positiveLeadIds from get_campaign_stats |
| limit | integer | – | How many leads to return (default 50) |
| Name | Type | Req | Description |
|---|---|---|---|
| campaignId | string | yes | – |
| campaignUrl | string | yes | – |
| leads | array | yes | – |
| returned | integer | yes | – |
| total | integer | yes | – |
No examples provided.
get_campaign_stats Get campaign funnel ~385
Returns the outreach funnel for one campaign: invites sent, invites accepted, messages sent, and replies split into positive / negative / other by sentiment. LinkedIn and email are merged, as on Onsa's Overview page. These count leads rather than actions - a lead invited twice counts once - so where a lead was re-invited they read slightly lower than the Overview widget, which counts actions. `invitesSent` can exceed `leadsTotal` without anyone having been invited twice: the counters are already de-duplicated by lead, and the gap means a lead who was contacted has since been skipped or deleted, which action rows survive and leadsTotal does not count. Onsa stores no post likes or emoji reactions at all, so 'LinkedIn reactions' in this data means the replies people sent; list_replies returns their text, and this tool only counts them. `rates` carries acceptancePct, replyPct, positivePct and negativePct, each already computed over its own correct denominator; leadsTotal is not one of those denominators, since it counts every prospect in the cohort including those never contacted. A rate is null when its denominator is 0, meaning nothing was sent so no rate exists - which is different from the counts above being genuinely 0. All four rates count only replies Onsa has scored, so an unscored or still-in-window reply appears in none of them, and list_replies can legitimately show more replies than the rates imply. Two further properties of the data: the *Scheduled counts are everything queued regardless of date, and sentiment is evaluated once per lead ever rather than once per reply. A campaign whose invites were never sent reads as all zeros, which is 'not tried yet' rather than 'failed'.
| Name | Type | Req | Description |
|---|---|---|---|
| campaignId | string | yes | Campaign id, as returned by list_campaigns or fetch_leads |
| Name | Type | Req | Description |
|---|---|---|---|
| campaignId | string | yes | – |
| campaignUrl | string | yes | – |
| invitesAccepted | integer | yes | – |
| invitesScheduled | integer | yes | – |
| invitesSent | integer | yes | – |
| leadsTotal | integer | yes | – |
| messagesScheduled | integer | yes | – |
| messagesSent | integer | yes | – |
| rates | object | yes | – |
| responses | object | yes | – |
No examples provided.
get_lead_memo Get lead research memo ~136
Returns the research memo Onsa's agent wrote about one lead: role history, company size and stage, what they have said publicly, and the angle on them. It is usually far richer than scoreExplanation, and it is the source material for outreach built on a specific, checkable fact rather than a generic opener. Most leads have no memo - Onsa writes one only for prospects it has researched - so `memo: null` is the common case and not an error, and scoreExplanation is the remaining source in that case.
| Name | Type | Req | Description |
|---|---|---|---|
| leadId | string | yes | Lead to read, from any tool that returns leads |
| Name | Type | Req | Description |
|---|---|---|---|
| companyName | – | yes | – |
| leadId | string | yes | – |
| memo | – | yes | – |
| memoWrittenAt | – | yes | – |
| name | – | yes | – |
| scoreExplanation | – | yes | – |
No examples provided.
list_campaigns List campaigns ~200
Lists the campaigns (past lead searches) in this workspace that the user takes part in, newest first. Returns the newest `limit` of them, default 50; `returned` against `total` shows whether older campaigns were omitted. Each entry has id, title, leadsTotal, hasIcp, tags, createdAt and updatedAt. An id is accepted by get_campaign for its ICP, get_campaign_leads for its people, get_campaign_stats for its outreach funnel, list_replies for what prospects wrote back, and list_next_steps for what the campaign still needs a human to do. Searches started over MCP often share a generic title, so the ICP and the dates distinguish cohorts more reliably than the title alone. A campaign row exists from the moment a search starts, so the newest entry is frequently still empty, with leadsTotal 0.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | How many campaigns to return, newest first (default 50) |
| Name | Type | Req | Description |
|---|---|---|---|
| campaigns | array | yes | – |
| returned | integer | yes | – |
| total | integer | yes | – |
No examples provided.
list_next_steps What to do next ~308
Returns read-only guidance for what to do next. Without campaignId, it returns the first-search question, active search progress, or campaign names and statuses to choose from. A single accessible campaign is resolved automatically. With campaignId, it returns a ranked to-do list: people who replied, people who accepted an invite but were never messaged, drafts and LinkedIn follow-ups waiting for approval, people with no reply for 7+ days while follow-ups are off, leads found but never contacted, and setup that is missing. It answers 'what should I do about this campaign today', where get_campaign_stats answers 'how is it doing'. For replies specifically, list_replies is the better source: its `awaitingOurReply` compares timestamps, while the `replied` bucket here covers only leads whose sentiment was scored and does not know whether we have since answered. `leadIds` passed to get_campaign_leads resolves the buckets into named people. Limits of the data: Onsa does not record whether we have already replied, or whether someone was contacted outside Onsa; 'replied' includes only replies whose sentiment was scored, so it is a floor; a withdrawn or unreachable invite leaves no trace, so some 'never contacted' leads may already have been tried. Sentiment is judged once per lead, not per message. Counts are complete; leadIds are capped at 200.
| Name | Type | Req | Description |
|---|---|---|---|
| campaignId | string | – | Optional campaign to inspect; omitted for workspace guidance |
| Name | Type | Req | Description |
|---|---|---|---|
| campaignId | string | – | – |
| campaignTitle | string | – | – |
| campaignUrl | string | – | – |
| campaigns | array | – | – |
| items | array | yes | – |
| leadsTotal | integer | – | – |
| nextAction | object | – | – |
| note | string | – | – |
| returned | integer | – | – |
| scope | string | – | – |
| searchAvailability | object | – | – |
| total | integer | – | – |
| workspaceState | string | – | – |
| workspaceUrl | string | – | – |
No examples provided.
list_pending_outreach List pending outreach ~183
Lists outreach messages the agent has drafted that are waiting for a human to approve - the 'a message for X is ready' queue. Each entry carries the draft text, the lead it is for, and why that lead scored as it did. Without campaignId, the list covers every campaign in this workspace that the user takes part in. Each entry has `kind`: first_message, or follow_up (a LinkedIn follow-up for someone who did not reply, carrying the message it follows up in `followsUp`). This tool sends nothing: rewrite_outreach replaces a draft's text, and send_outreach queues one for delivery.
| Name | Type | Req | Description |
|---|---|---|---|
| campaignId | string | – | One campaign to limit the list to; when omitted, the list covers every campaign the user takes part in |
| limit | integer | – | How many drafts to return (default 50) |
| Name | Type | Req | Description |
|---|---|---|---|
| pending | array | yes | – |
| returned | integer | yes | – |
| total | integer | yes | – |
No examples provided.
list_replies Read prospect replies ~382
Returns the text of what prospects replied, for every lead in the campaign that answered, paired with the outbound message it answers. get_campaign_stats counts replies and labels them; this returns the words. `sentiment` is Onsa's own label, written once per lead on their first reply - later replies never change it, and a reply Onsa has not scored yet comes back as `sentiment: null`, which means unscored rather than neutral. Those unscored replies are absent from get_campaign_stats entirely, so this tool can return more replies than the funnel counts. Three derived fields come with the reply. `awaitingOurReply`: the prospect spoke last and no sent message followed. It is structural only - a flat 'no thanks' satisfies it too - and Onsa sees only what Onsa sent, so a reply made by hand inside LinkedIn is invisible to it; what the data supports is 'no reply recorded here'. `daysSinceLastReply` is elapsed whole days rather than time-unanswered: it is populated even where we did answer, so it describes time-unanswered only when `awaitingOurReply` is also true. `looksLikeBroadcast`: the prospect's most recent message reached another profile in this campaign word for word, which indicates a mass DM rather than an answer. All three are floors rather than verdicts - a blast only one lead received is indistinguishable from a real reply, and two people who send the same long template are both flagged. Top-level `awaitingOurReplyCount` spans the whole campaign rather than this page, and leaves out broadcasts and replies scored negative; it can exceed `returned` when `limit` is small.
| Name | Type | Req | Description |
|---|---|---|---|
| campaignId | string | yes | Campaign to read replies from |
| limit | integer | – | Maximum replies to return, newest first (default 50) |
| Name | Type | Req | Description |
|---|---|---|---|
| awaitingOurReplyCount | integer | yes | – |
| campaignId | string | yes | – |
| campaignTitle | string | yes | – |
| campaignUrl | string | yes | – |
| conversations | array | yes | – |
| returned | integer | yes | – |
| total | integer | yes | – |
No examples provided.
preview_shortlist Preview a shareable list ~210
Prepares a preview of 1–50 selected prospects from a campaign the user takes part in, and publishes nothing. The snapshot holds a list title, which is the campaign's name, the note, and for each person only a name, role, company, LinkedIn profile and, when includeRationale is true, a fit rating and why-matched explanation. The preview returns the complete snapshot a link would expose, with the previewKey that create_shortlist requires; a created link stays viewable for 30 days by anyone who has it, and can be revoked with revoke_shortlist.
| Name | Type | Req | Description |
|---|---|---|---|
| campaignId | string | yes | – |
| includeRationale | boolean | yes | When true, each person in the snapshot carries a fit rating (1–5, or null when none is stored) and a why-matched explanation; when false, the rating is null and the explanation empty. |
| leadIds | array | yes | – |
| note | string | yes | – |
| title | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| previewKey | string | yes | – |
| snapshot | object | yes | – |
No examples provided.
revoke_shortlist Revoke a list link ~54
Revokes a list link by the id create_shortlist returned; only the user who created the link can revoke it. Future views stop immediately; previously copied or downloaded information cannot be recalled.
| Name | Type | Req | Description |
|---|---|---|---|
| id | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| revoked | boolean | yes | – |
No examples provided.
rewrite_outreach Rewrite outreach draft ~221
Replaces the text of an outreach draft that is waiting for approval. The current draft and the lead's scoreExplanation come from list_pending_outreach; get_lead_memo carries the richer research on that person. The rewritten draft stays in the approval queue, and this tool sends nothing. LinkedIn follow-up drafts (kind: follow_up) cannot be rewritten here: they are edited in Onsa, or approved as written with send_outreach.
| Name | Type | Req | Description |
|---|---|---|---|
| leadId | string | yes | Lead whose draft to rewrite, from list_pending_outreach |
| subject | – | – | Email subject; only email delivery reads it, and send_outreach, a LinkedIn send, does not. When omitted, the stored subject stays unchanged, so a body-only edit keeps it; a string replaces it, and nu… |
| text | string | yes | The full replacement message. This same string is called `draftText` when list_pending_outreach returns it, and `confirmText` when you pass it to send_outreach — three names, one set of bytes. |
| Name | Type | Req | Description |
|---|---|---|---|
| leadId | string | yes | – |
| subject | – | yes | – |
| text | string | yes | – |
| updated | boolean | yes | – |
No examples provided.
send_outreach Send outreach message ~277
Queues one already-approved outreach draft for delivery to a real person on LinkedIn. It requires `confirmText`, the draft body character-for-character as stored, and `confirmName`, the recipient's name: drafts are often near-identical between people, so matching the body alone does not identify which one was meant. A mismatch is refused without returning the stored text, which list_pending_outreach supplies. The server additionally requires a confirmation from the person at the keyboard, rendered by the MCP client and quoting the draft as stored; that approval is single-use and bound to one recipient and one draft. A client that cannot render such a confirmation receives a refusal carrying a link to approve inside the Onsa app, and nothing is queued. On success the message is queued rather than delivered: Onsa sends it on its own schedule, subject to daily pacing limits. A follow-up draft (kind: follow_up) goes into the same LinkedIn thread as the first message and is cancelled if the person replies before it is sent.
| Name | Type | Req | Description |
|---|---|---|---|
| confirmName | string | yes | The recipient's name as shown to the user, to prove you meant this person |
| confirmText | string | yes | The exact draft text you showed the user and they approved, verbatim |
| leadId | string | yes | Lead to message, from list_pending_outreach |
| Name | Type | Req | Description |
|---|---|---|---|
| kind | string | – | – |
| leadId | string | yes | – |
| name | – | yes | – |
| queued | boolean | yes | – |
No examples provided.
How do I install the Onsa MCP server?
Onsa is a hosted endpoint at https://api.onsa.ai/api/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 · api.onsa.ai
claude mcp add --transport http ai-onsa-onsa 'https://api.onsa.ai/api/mcp'
What is the Onsa MCP server?
Onsa is an MCP server listed in the public MCP registry as ai.onsa/onsa. Find scored B2B leads, read campaign replies and send approved LinkedIn outreach. This page covers its hosted endpoint (https://api.onsa.ai/api/mcp).
Is the Onsa MCP server safe to use?
Onsa scores 89 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 Onsa MCP server expose?
Onsa exposes 16 tools: preview_shortlist, create_shortlist, revoke_shortlist, find_leads, fetch_leads, and 11 more. Their descriptions and schemas cost roughly 4,606 tokens of context every time the server is loaded.
Does the Onsa MCP server require authentication?
Yes. Onsa asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.
Is the Onsa MCP server still maintained?
Onsa is still listed as active in the MCP registry. We last reached this channel on 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.