Haystack MCP server

Which MCP servers are Haystack's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-11-03

← Back to Haystack

Whose server it is

Registry nameio.haystackapp/jobsverified in the MCP registry

The registry name sits under haystackapp.io. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-11-03

Stateanswerschecked 2026-11-03
Tools4
Server calls itselfhaystack
Server version1.0.0
Protocol version2025-06-18

On 2026-11-03 the server answered initialize and tools/list without a sign-in. First answer in 400 ms.

Should an agent connect itNot proven either way yet

Whether its tools do the product's job has not been judged yet.
Checked on 1 of the 7 days it takes to judge reliability.

Once connected

Parameters are untyped or undescribed in 1 of 4 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 1, the first on 2026-11-03

INITE MCP scoreafter a weeka score needs 7 daily checks: 1 so far
Answeredmeasuring1 of the 7 daily checks it takes to print a share
Median first answer1530 ms
Space in an agent's context≈ 724 tokensthe definitions of all its tools (4), which an agent carries on every turn
Tool definitionsA · 96 of 100
Typed results0 of 4 toolsdeclared outputSchema: results come typed, read once

Parameters without a description: in 1 of 4

What an agent can do with it

not sure · Match a resume to live job postings
not sure · Have an agent apply with a tailored resume
cannot · Post a role and screen incoming applicants

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers4 tools · read 2026-11-03

search_jobs
Search live jobs on Haystack, newest first. Filter by job title words, country, city, remote, and by what the advert says: no experience needed, no degree needed, visa sponsorship offered. Returns up to 20 jobs, each with its link, and an…
get_job
One job's details by its Haystack id: title, employer, location, pay, work mode, skills, what the advert says (no experience, no degree, visa sponsorship), the description, and facts about applying to that employer from Haystack's data…
employer_facts
What Haystack knows about applying to an employer: live roles, the share of applications that got a reply, the median time to the first reply, how many fields its form has and the questions it asks. Pass no company to get the employers…
application_system_facts
Facts about an application system (ATS) from applications Haystack's AI agent sent: how many fields its forms have, the questions they ask most, and how fast employers on it reply. Without a system, the overall figures.

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "jobs": {
      "type": "http",
      "url": "https://haystackapp.io/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http haystackapp https://haystackapp.io/mcp

Add to Cursor Add to VS Code

claude.ai, ChatGPT and other clients: add https://haystackapp.io/mcp as a custom connector in the settings.

Other servers listed as Haystack's

io.haystackapp/auto-applyanswers, requires sign-inverified in the MCP registry

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.