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DottaandPaperclip 2b688a8fe3 feat(connections): add verified MCP providers and setup fixes (#15621)
## Thinking Path

> - Paperclip is the open source app people use to manage AI agents for
work.
> - Apps give agents governed access to external tools.
> - Several provider MCP servers lacked a supported catalog entry or
failed during setup.
> - Real browser tests identified specific registration, session, and
form defects.
> - This pull request adds seven catalog entries and fixes the shared
paths used by eleven verified providers.
> - Users can connect these providers through the existing Apps flow and
control each action.

## Linked Issues or Issue Description

**What existing behavior does this improve?**

The Apps catalog and remote MCP setup, discovery, and action tester.

**Subsystem affected**

Shared app definitions, the server tool services, and the Apps UI.

**Current behavior**

Seven providers lack a catalog entry. Airtable can select an advertised
client-metadata flow that fails. Calendly rejects the registration name.
Tavily needs an initialized session before a call. Firecrawl exposes
invalid defaults for optional nested form objects. HTTPS setup can
display a callback that differs from the server callback.

**Proposed behavior**

Add Calendly, Exa, Firecrawl, GSC Wizard, Parallel Search, Tavily, and
Windsor.ai. Preserve Airtable, Linear, Make, and PostHog. Use reviewed
provider options through the shared MCP and OAuth paths. Display the
callback supplied by the server. Omit untouched optional object inputs.

**Reason and benefit**

Eleven providers passed bounded reads through the real Paperclip browser
action tester. This PR includes that verified set and its required
shared fixes. Unfinished providers remain outside this change. AgentMail
keeps its existing integration.

**Breaking changes**

No database migration. Existing OAuth credentials and action policies
keep their ownership and access rules. Airtable's reviewed method
re-registers a retained client-metadata binding through DCR. Tavily's
reviewed method initializes sessions before dispatch. The existing
customer, managed, and Vercel OAuth gateway paths now refresh on
upstream 401 and return `oauth_refreshed_retry_required` (409),
requiring an explicit caller retry. They do not replay the rejected call
automatically; the next invocation initializes a fresh credential-scoped
session when required.

Related catalog work: #15545. This branch preserves current master
catalog entries and does not add another Google Workspace integration.
Open and closed provider PRs and public MCP issues were searched. No
duplicate for this verified set was found. The change extends the
shipped Connected Apps roadmap item.

## What Changed

- Add seven catalog entries with official provider branding and reviewed
permissions.
- Update Airtable, Linear, and Make metadata and show Make in Apps.
- Add authoritative provider source overrides that use the existing
generation and review checks.
- Add the reviewed Airtable DCR option and compatible Calendly
registration names.
- Initialize Tavily sessions before discovery and calls, including
retained connections. Keep credential-scoped session caching and single
call dispatch.
- Use the server's callback URL in the OAuth setup UI.
- Omit untouched optional object defaults; keep supplied empty strings,
false, zero, and object values intact in the action tester, with strict
required-child validation.
- Require an explicit retry after OAuth refresh instead of replaying a
tools/call with missing session headers.
- Record all eleven successful reads, write policies, auth-method
limits, and qualification caveats. Omit credentials and private account
data.
- Find chat connector cards through catalog search in browser tests, so
pagination does not hide Slack or other later entries.

## Verification

- Real browser qualification: eleven bounded reads passed. Catalog
refresh and reload proof are recorded in
`doc/connections/verified-mcp-qualification-2026-10-08.md`.
- Provider writes and actual agent-adapter sessions were not run.
Alternative documented auth methods and expiry refresh remain
unqualified.
- `pnpm -r typecheck`: passed.
- `pnpm build`: passed.
- Focused shared/catalog tests: 41 passed. Source override tests: 3
passed. Catalog regeneration fixture suite: 9 passed. Latest form
regression suites: 31 passed. Gateway suite: 38 passed. Other focused UI
suites passed before these last fixes.
- UI token gates and both token sync checks: passed.
- The catalog regeneration fixture includes the authoritative provider
overrides; its full suite passes. The focused OAuth socket case passed
on isolated rerun.
- Complete local UI suite: 7,866 passed. CLI suite: 511 passed, 6
skipped. Complete shared suite: 892 passed.
- The unchanged AgentMail/ClickUp discovery fallback suite passes all 45
cases. An OpenAI login test passed on isolated rerun.
- Local broad database coverage is limited by macOS PostgreSQL
shared-memory exhaustion (`shmget: No space left on device`, not disk
space). The broad run was interrupted after diagnosis; no host settings
or other running services were changed.
- CI found that the Slack browser test assumed its catalog card was on
the first page. The test now uses catalog search; the Slack case passes
locally. Adjacent GitHub and iMessage cases could not start locally
because embedded PostgreSQL initialization failed before browser
assertions.
- Final commit
[`febe4520e`](https://github.com/paperclipai/paperclip/commit/febe4520e13d4b3a4121eafc3d22540c2b11379d):
all 54 checks passed, with none pending or failed. [CI
run](https://github.com/paperclipai/paperclip/actions/runs/37847182065)
passed typecheck, build, all general and serialized test suites, all
eight browser shards, runner checks, canary dry run, and the aggregate
verification gate.
- Greptile reviewed that exact final commit at 2026-10-08 21:33 UTC and
returned 5/5 with no outstanding findings or unresolved threads.
- PR UI preview against the existing local test server: Calendly
catalog/setup observed; Firecrawl read passed after expanding More
options with nested optional inputs untouched. This retest proves
frontend behavior, not the revised OAuth backend against a live
provider.

<details>
<summary>Browser evidence</summary>

![Calendly
catalog](https://raw.githubusercontent.com/paperclipai/paperclip/codex/verified-mcp-connectors/doc/connections/verified-mcp-qualification-2026-10-08/calendly-catalog.jpg)

![Calendly
setup](https://raw.githubusercontent.com/paperclipai/paperclip/codex/verified-mcp-connectors/doc/connections/verified-mcp-qualification-2026-10-08/calendly-setup.jpg)

![Firecrawl
read](https://raw.githubusercontent.com/paperclipai/paperclip/codex/verified-mcp-connectors/doc/connections/verified-mcp-qualification-2026-10-08/firecrawl-read.jpg)

</details>

## Risks

- Provider registration and consent behavior can change. Airtable's DCR
option is explicit and keeps the existing issuer, resource, redirect,
and PKCE checks.
- Tavily uses initialized sessions without automatic call retries. After
a successful OAuth refresh following 401, callers now receive a
retry-required result. A later explicit retry can still require
reauthorization if the provider rejects the refreshed token. Provider
writes are not live-qualified.
- Optional object cleanup affects the shared action tester. Regression
tests cover absent objects, required children, defaults, and populated
values.
- GSC Wizard's underlying Google data scopes and Google flow completion
were not independently verified. Its account reported paid/trial
metadata of unknown origin. No purchase was performed.
- No database migration, new AgentMail integration, or change to
existing action grants is included.

## Model Used

OpenAI GPT-6 through Codex assisted with implementation, research, tool
use, and code execution. The root backend model ID and context window
are not exposed in this session. The cheaper subagents used OpenAI
`gpt-6-luna`. No model context size is inferred.

## Checklist

- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` / `Refs #` OR (b) described the issue in-PR following the relevant
issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [ ] I have run tests locally and they pass — targeted checks and
complete UI/CLI/shared suites passed; the broad local database run was
blocked by the macOS PostgreSQL startup limitation documented above. The
full database/workspace suite passed in CI.
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge

---------

Co-authored-by: Paperclip <noreply@paperclip.ing>
2026-10-09 08:10:46 -05:00
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